Menu 29 − Pump Closed-loop

Mode: RFC‑A

This parameter indicates the pump software version number in the format ww.xx.yy.zz e.g. 01.00.00.00.

This parameter indicates the total running time so far for this drive. This is the time while the motor is being commanded to run.

This parameter indicates the operating status of the pump software. This forms an important diagnostic aid which tells the user what the system is doing at any moment and why e.g. if the pump has gone to sleep or stopped the operating status will indicate why. The following table shows all of the status values:

The following state diagrams show the interactions between the states.

This indicates the system total volume so far in units defined by Volume Scaling (29.006) e.g. Litres or Gallons. The volume value can be reset by setting Reset Volume Input (29.010) to On(1). To calculate Volume a suitable flow meter must be connected to the drive, as selected by Flow Meter Source Select (29.179).

This indicates the system flow in units defined by Flow Scaling (29.007) e.g. Litres per minute or Gallons per minute. To calculate Flow a suitable flow meter must be connected to the drive, as selected by Flow Meter Source Select (29.179). See Volume (29.004).

When Flow Meter Source Select (29.179) is set to Pulse, this parameter is the scaling factor used to convert the pulsed flow meter count into a volume in a user selected unit e.g. Gallons or Litres. The scaling factor is a volume per flow meter pulse. Many flow meters give a flow rate at a given frequency e.g. 100Hz = 120 litres per second, where this can be converted to a volume per pulse by dividing the flow rate by the frequency e.g. Volume Scaling = 120lps/100Hz = 1.2.

To use a sensor with a flow per minute the scaling must be divided down by 60 (seconds per minute), or 3600 (seconds per hour) for a flow per hour. E.g. for a sensor with a flow rate of 120 litres per minute the volume scaling = 120lpm / (100Hz * 60 seconds per minute) = 0.02.

When Flow Meter Source Select (29.179) is set to Analog, Flow Scaling (29.007) and Volume Scaling (29.006) should be set to 1.000000 unless additional scaling is required.

See Volume (29.004).

See Volume (29.004).

This is the system input for a pulsed flow meter used to derive Flow and Volume. The maximum input frequency is 100Hz. A digital input with a pulsed flow meter connected should be routed to this parameter.

This input is only used when Flow Meter Source Select (29.179) = Pulse.

See Volume (29.004).

This indicates the total number of flow meter pulses detected so far from the Flow Meter Pulse Input (29.008) when Flow Meter Source Select (29.179) = Pulse.

This indicates the volume calculated so far by integrating the Flow detected from the Flow Meter Analog Input (29.180), after Flow Meter Analog Minimum Scaling (29.181) and Flow Meter Analog Maximum Scaling (29.182) have been applied, when Flow Meter Source Select (29.179) = Analog.

This count can be reset by setting Reset Volume Input (29.010) to On(1). This count is the basis for the Volume calculation so resetting this value will also reset Volume (29.004).

See Volume (29.004).

When set to On (1), this resets the total number of flow meter pulses detected so far in Flow Meter Pulse Count (29.009) and Volume (29.004).

See Volume (29.004).

This defines the type of system that the drive is being applied to. The following table shows the options available:

NOTE: This parameter is only read internally when Hand, Auto and Cleaning are not selected. If Hand or Auto or Cleaning is selected and Pump Control Mode (29.011) is modifed, the previous mode is retained until Hand, Auto and Cleaning are not selected, where the new control mode is used. This is to prevent accidental change of mode during operation.

This selects how the system will respond to control inputs. The following table shows the options available:

This is the system "Auto" control input used to run the system automatically where the system can be controlled by the main process PID, or if the PID is disabled by setting PID1 Enable (14.008) = Off(0), a fixed speed reference set by PID Disabled / Feedback Loss Reference. This input may be used when Control Input Mode (29.012) = Input or Ctrl Wrd & Input. A digital input with an Auto selection switch connected should be routed to this parameter.

This selects where the frequency or speed reference comes from when Hand mode is selected. When set to Digital Speed, Pr1.022 sets the reference. When set to Analog Speed, by default, a 0 to 10V signal is applied to analog input 2 T6. See the following table.

When set to 0.0 minutes, Hand mode timeout is disabled, i.e. the system will run in Hand mode for as long as Hand mode is selected.
When set > 0.0, this sets the time in minutes that Hand mode will be selected for before timing out and stopping the motor, where Operating Status (29.003) changes to Timer Stop. To reset the Hand mode timeout, Hand mode must be deselected.

When set to On(1), this indicates that Auto mode has been selected. The following conditions must be met for Auto Selected Output (29.018) to become set to On(1):

• Auto Select Input (29.015) = On(1)
• The drive is enabled where Hardware Enable (06.029) = On(1)
• Hand mode hasn't been selected where Hand Select Input (29.013) = Off(0)
• The time schedule function is disabled via Time Schedule Run Input Enable (29.055), or Time Schedule Run Input Enable (29.055) = On(1) and Time Schedule Run Input (29.056) = On(1). 

When set to Off, Auto mode is not selected.

When set to On(1), this indicates that Hand mode has been selected. The following conditions must be met for Hand Selected Output (29.019) to become set to On(1):

• Hand Select Input (29.013) = On(1) , or Hand button pressed for 2s, or Pump Control Word 1 (29.151) bit2 = 1.
• The drive is enabled where Hardware Enable (06.029) = On(1)
• Auto mode hasn't been selected where Auto Select Input (29.015) = Off(0) or Pump Control Word 1 (29.151) bit4 = 0.
• Hand mode time-out is disabled or hasn't timed out via Hand Mode Timeout (29.017).

When set to Off, Hand mode is not selected.

When set to On(1), this indicates that Auto mode is selected and the motor is energised.

When set to On(1),  this indicates that Auto mode is selected and the system is sleeping (motor stopped) or running (motor energised).

PID Setpoint 0 (29.022) is the main process PID setpoint.  PID Setpoint 0 (29.022) is selected by default because the PID setpoint select inputs, PID Setpoint Select Input 0 (29.026) and PID Setpoint Select Input 1 (29.027) are set to Off(0) by default.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

PID Setpoint 1 (29.023) is an additional setpoint and requires the PID setpoint select inputs, PID Setpoint Select Input 0 (29.026) and PID Setpoint Select Input 1 (29.027) to command it. If PID Setpoint Select Input 0 (29.026) = On(1) and PID Setpoint Select Input 1 (29.027) = Off(0), PID Setpoint 1 (29.023) is selected.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

PID Setpoint 2 (29.024) is an additional setpoint and requires the PID setpoint select inputs, PID Setpoint Select Input 0 (29.026) and PID Setpoint Select Input 1 (29.027) to command it. If PID Setpoint Select Input 0 (29.026) = Off(0) and PID Setpoint Select Input 1 (29.027) = On(1), PID Setpoint 2 (29.024) is selected.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

PID Setpoint 3 (29.025) is an additional setpoint and requires the PID setpoint select inputs, PID Setpoint Select Input 0 (29.026) and PID Setpoint Select Input 1 (29.027) to command it. If PID Setpoint Select Input 0 (29.026) = On(1) and PID Setpoint Select Input 1 (29.027) = On(1), PID Setpoint 3 (29.025) is selected.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

PID Setpoint Select Input 0 (29.026) is used in combination with PID Setpoint Select Input 1 (29.027) to select the 4 different main process PID setpoints. By default, both inputs are set to Off where PID Setpoint 0 (29.022) is selected. The following table shows how the PID Select inputs may be used to choose which setpoint is active:

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

PID Setpoint Select Input 1 (29.027) is used in combination with PID Setpoint Select Input 0 (29.026) to select the 4 different main process PID setpoints. By default, both inputs are set to Off where PID Setpoint 0 (29.022) is selected. The following table shows how the PID Select inputs may be used to choose which setpoint is active:

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates the value of the setpoint selected by PID Setpoint Select Input 0 (29.026) and PID Setpoint Select Input 1 (29.027).

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When Flow Compensation Enable is set to On(1), this value is limited to the output of the Flow Compensation interpolation calculation as indicated by Flow Compensation Output Limit.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates the final value of the setpoint passed to the main process PID reference setpoint PID1 Reference (14.020) shown in feedback units. PID Final Setpoint (29.029) = PID Selected Setpoint (29.028) - No Flow Setpoint Reduction (29.073).

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates the final value of the setpoint passed to the main process PID reference setpoint PID1 Reference (14.020) in percent units. PID Final Setpoint Percent (29.030) = 100 * (PID Selected Setpoint (29.028) - No Flow Setpoint Reduction (29.073)) / ( PID Feedback Maximum Scaling (29.032) - PID Feedback Minimum Scaling (29.031)).

When PID1 Pre-sleep Boost Level (14.028) is applied during pre-sleep, Sleep Required Output (29.053) = On(1), PID1 Pre-sleep Boost Level (14.028) is added to PID Final Setpoint Percent (29.030) directly.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

The units of this parameter, are defined by the feedback type, e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure scaling parameter . All of the PID related parameters are scaled within this range e.g. any setpoint or feedback value. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

The units of this parameter, are defined by the feedback type, e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure scaling parameter . All of the PID related parameters are scaled within this range e.g. any setpoint or feedback value. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This is the time constant in seconds for the low pass filter used to condition the value from the feedback transducer connected to Analog input 1 T5.

For a step change in feedback value, after 5x the filter time constant the input and output of the filter will be approximately equal e.g. if the time constant is 1s, after a step change in feedback, after 5s the output will approximately match the input.

The input to the filter is PID Feedback Percent (29.034) and the output from the filter is PID Final Feedback Percent (29.035).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This parameter is the destination for the main process PID feedback analog input. by default, Analog input 1 T5 is routed to this parameter. This value is filtered, (see PID Feedback Filter Time Constant (29.033)), where the result of the filter is passed to PID Final Feedback Percent (29.035) which is used as the main process PID feedback value.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This parameter is the output of the main process PID feedback filter, (see PID Feedback Filter Time Constant (29.033)), and is routed to the main process PID Feedback reference source in the User PID Controller (14) menu.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This parameter is the output of the main process PID feedback filter, (see PID Feedback Filter Time Constant (29.033)), and scaled in to feedback units via PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032).

PID Final Feedback (29.036) = PID Feedback Minimum Scaling (29.031) + (PID Final Feedback Percent (29.035) * (PID Feedback Maximum Scaling (29.032) - PID Feedback Minimum Scaling (29.031) ) / 100).

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure feedback value with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates the main process PID Error in feedback units.

PID Error (29.037) = PID Feedback Minimum Scaling (29.031) + (PID1 Error (14.022) * (PID Feedback Maximum Scaling (29.032) - PID Feedback Minimum Scaling (29.031) ) / 100).

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure error value with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This is used by the Pump software to enable and disable the main process PID (PID1). The PID will be disabled if the system is running in Hand mode, or if the PID feedback has been lost as indicated by Analog Input 1 Current Loop Loss (07.028) in Auto mode and PID Feedback Loss Action (29.048) = Fixed Speed.

The user has the ability to completely disable the main process PID independent of PID Software Enable (29.038) by setting PID1 Enable (14.008) = Off(0). This may be required for systems that require a fixed speed such as a pump system running from level switches where the fixed speed reference is provided by PID Disabled / Feedback Loss Reference (01.023).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure threshold with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

The function of this parameter is defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is an over-pressure indication.

Note: this output is held on for a minimum of 1s to allow a HMI to log the Alarm output. This is helpful in situations when PID Feedback High Sleep Enable (29.188) = On(1), where the system will rapidly enter the sleep state in the event that this bit becomes set to 1.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure threshold with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This parameter is only used when PID Feedback Low Mode (29.043) = Threshold or Bandwidth.

The function of this parameter is defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is an under-pressure detection delay.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

PID Feedback Low Mode (29.043) selects which mode to use when generating a feedback low indication and trip. The table below shows the options available:

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the PID feedback low threshold, used when PID Feedback Low Mode (29.043) = Bandwidth.

If the main process PID feedback, PID Final Feedback (29.036), falls below the PID Feedback Low Threshold (29.044) for PID Feedback Low Delay (29.042) seconds then a PID Low drive trip is actioned and a PID low indication is given via PID Feedback Low Output (29.047).

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure threshold with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines a symmetrical band around the PID setpoint, PID Final Setpoint (29.029), where the system is considered to be at the setpoint i.e. the top of the band is PID Final Setpoint (29.029) + PID At Setpoint Band (29.045), and the bottom of the band is PID Final Setpoint (29.029) - PID At Setpoint Band (29.045).

If the main process PID feedback, PID Final Feedback (29.036), is within the PID At Setpoint Band (29.045), PID At Setpoint Output (29.046) is set to On(1) indicating that the system is at the setpoint.

Note that No Flow Setpoint Reduction (29.073) must be greater than PID At Setpoint Band (29.045) for the no flow by software detection system to operate correctly.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint band with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When set to On(1), this indicates when the main process PID feedback, PID Final Feedback (29.036) is within the PID At Setpoint Band (29.045) indicating that the system is at the setpoint, PID At Setpoint Output (29.046).

This output is used by the no flow by software detection scheme to tell if the setpoint reduction configured by No Flow Setpoint Reduction (29.073) has been reached or not.

When set to Off(0), the system isn't at the setpoint.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When set to On(1), this indicates when the main process PID feedback, PID Final Feedback (29.036) is either less than the PID At Setpoint Band (29.045) or the PID Feedback Low Threshold (29.044) indicating that the system is output is lower than the setpoint, PID Final Setpoint (29.029).

When set to Off(0), the system output isn't low.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

If the PID is running with a normal error response, (PID1 Reference Invert (14.005) and PID1 Feedback Invert (14.006) = Off(0)), Wake Detect Feedback Threshold (29.049) defines the main process PID feedback level, PID Final Feedback (29.036), below which the system will wake when the system is running in Auto mode, and defines the minimum working feedback level for the system. For example, a pumping system with a pressure feedback device gives a high PID output with a low pressure, and a low PID output with high pressure. In this scenario when the feedback is above the setpoint the setpoint the motor reference will reduce down to the minimum. In order to wake the system the PID Feedback must be below the wake threshold.

In a Cascade or Multi-leader system the Wake Detect Feedback Threshold (29.049) is used in combination with the Add Assist Band (29.123) to decide when to start an assist i.e. both the add assist and wake thresholds must be satisfied to start an assist.

If the PID is running with an inverse error response, (PID1 Reference Invert (14.005) and PID1 Feedback Invert (14.006) = On(1)), Wake Detect Feedback Threshold (29.049) defines the main process PID feedback level, PID Final Feedback (29.036), above which the system will wake when the system is running in Auto mode. For example, cooling system with a temperature feedback device gives a high PID output with a high temperature, and a low PID output with low temperature. In this scenario when the feedback is below the setpoint the motor reference will reduce down to the minimum. In order to wake the system the PID Feedback must be above the wake threshold.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure threshold with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

Note that if the main process PID has been disabled via PID1 Enable (14.008), then the wake threshold is ignored and the system will wake when started in Auto mode.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the continuous time in seconds that the main process PID feedback, PID Final Feedback (29.036), must be below the Wake Detect Feedback Threshold (29.049) before the system is automatically started, with the default PID response. Wake Detect Delay (29.050) filters out any intermittent wake conditions.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then the wake threshold is ignored and the system will wake when started in Auto mode.

See Wake Detect Feedback Threshold (29.049).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

The system will tend to reach this threshold if there is no output demand from the pump e.g. in a pump system if a pump output valve is closed the motor speed will drop because the main process PID can reach the setpoint with a reduced speed where the system will enter this threshold.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the continuous time in seconds that the motor frequency or speed must be below the Sleep Detect Speed Threshold (29.051) before the system is automatically stopped. Sleep Detect Delay (29.052) filters out any intermittent sleep conditions.

See Sleep Detect Speed Threshold (29.051).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates when the motor frequency or speed is below the Sleep Detect Speed Threshold (29.051) and the Sleep Detect Delay (29.052) is timing down indicating that a sleep is required i.e. pre-sleep.

See Sleep Detect Speed Threshold (29.051).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates when the motor frequency or speed was below the Sleep Detect Speed Threshold (29.051) and the Sleep Detect Delay (29.052) has elapsed and the system is sleeping.

See Sleep Detect Speed Threshold (29.051).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When set to On(1), Time Schedule Run Input (29.056) is enabled. To run the system in Auto Time Schedule Run Input (29.056) must be set to On(1), and to stop the system Time Schedule Run Input (29.056) must be set to Off(0). This feature is intended to be operated by a clock such as the one provided by a KI-HOA Keypad RTC keypad, where timer 1 in the User Functions 1 (09) menu may be used to define on and off periods for the system e.g. for an irrigation pump it may be desirable to run the pump during the day only. By default, the output of timer 1, Timer 1 Output (09.042), is routed to the Time Schedule Run Input (29.056) using Timer 1 Destination (09.043).

When set to Off(0), Time Schedule Run Input (29.056) is disabled and has no effect on the system.

To use this input Time Schedule Run Input Enable (29.055) must be set to On(1).

When set to On(1), the system will be permitted to run in Auto mode.

When set to Off(0), the system will be stopped in Auto mode.

Time Schedule Run Input (29.056) has no effect on the operation of hand mode.

This feature is intended to be operated by a clock such as the one provided by a KI-HOA Keypad RTC keypad, where timer 1 in the User Functions 1 (09) menu may be used to define on and off periods for the system e.g. for an irrigation pump it may be desirable to run the pump during the day only. By default, the output of timer 1, Timer 1 Output (09.042), is routed to the Time Schedule Run Input (29.056) using Timer 1 Destination (09.043).

See Time Schedule Run Input Enable (29.055).

This defines the load percentage below which a dry well low load condition is detected. Dry Well Low Load Detection Threshold Percent (29.057) is compared against Percentage Load (04.020). To complete the dry well low load detection logic the motor frequency or speed must be within the Maximum Drive Reference Band (29.083). Note that Percentage Load (04.020) must not be 0% in order to activate the dry well feature i.e. a motor must be connected.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then Dry Well Low Load detection is internally disabled.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the continuous time in seconds that the load level must be below the Dry Well Low Load Detection Threshold Percent (29.057) and the motor frequency or speed must be within the Maximum Drive Reference Band (29.083) to detect a dry well low load condition. Dry Well Low Load Detection Delay (29.058) filters out any intermittent Dry Well Low Load conditions.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then Dry Well Low Load detection is internally disabled.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the Dry Well Low Load system will operate. The following options are available:

If a Dry Well condition is detected in a Cascade system, Pump Control Mode (29.011) = Cascade, the Soft Starters will be stopped to prevent pump wear. The Soft Starters will automatically restart when the Dry Well condition has finished.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then Dry Well Low Load detection is internally disabled.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When Dry Well Low Load Mode (29.059) = Lower PID Output, if a Dry Well Low Load condition is detected, the PID output is lowered by the Dry Well Low Load PID Output Reduction (29.060) value thereby limiting potential damage to the pump. When the load value is above the Dry Well Low Load Detection Threshold Percent (29.057), the PID output is restored.

Operating Status (29.003) = Dry Well Run when Dry Well Low Load PID Output Reduction (29.060) has been used to reduce the PID output due to a dry well condition.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then Dry Well Low Load detection is internally disabled.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When Dry Well Low Load Restart Delay (29.061) = 0 and a dry well is detected, the drive will trip on Dry Well, and then enter the Dry Well Stop state. The user must deselect Auto mode to leave the Dry Well Stop state, after which the pump drive may be restarted by selecting Auto mode again. This forces the user to reset the system when the liquid supply is back thereby preventing damage by running the pump dry.

When Dry Well Low Load Restart Delay (29.061) is > 0.0, this defines the minimum time in seconds after the drive has been tripped due to a Dry Well Low Load condition before it can be restarted. This prevents the system from automatically resetting and attempting to run again without there being sufficient time to allow the well or tank to fill again. When Dry Well Low Load Restart Delay (29.061) is counting down Auto mode isn't available but the user will still be able to activate Hand mode.

This is only used when Dry Well Low Load Mode (29.059) = Trip.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then Dry Well Low Load detection is internally disabled.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When set to On(1), this indicates when a Dry Well Low Load condition has been detected.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then Dry Well Low Load detection is internally disabled.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

A suitable pulsed output flow meter must be connected to a digital input routed to the Flow Meter Pulse Input (29.008) to allow the Low Flow functionality to operate.

In the event that a low flow is detected, Operating Status (29.003) will transition to Sleeping.

See Volume (29.004).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When set to 0, the low flow stop feature is disabled.

When set to >0, the low flow stop feature is enabled.

This defines the continuous time in seconds that the Flow (29.005) must be below the Low Flow Meter Stop Threshold (29.063) to detect a low flow condition. Low Flow Meter Stop Delay (29.064) filters out any intermittent Low Flow conditions.

A suitable pulsed output flow meter must be connected to a digital input routed to the Flow Meter Pulse Input (29.008) to allow the Low Flow functionality to operate.

See Volume (29.004).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates when a Low Flow meter stop has been actioned. This happens when the Flow (29.005) is below the Low Flow Meter Stop Threshold (29.063) and the Low Flow Meter Stop Delay (29.064) has elapsed.

A suitable pulsed output flow meter must be connected to a digital input routed to the Flow Meter Pulse Input (29.008) to allow the Low Flow functionality to operate.

See Volume (29.004).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This is the input for a flow switch where Off(0) = No flow, On(1) = Flow. A digital input with a flow switch connected should be routed to this parameter. This input is used to detect when the system should stop due to no flow and to terminate the automatic pipe filling routine when flow is detected; see No Flow Switch Delay (29.067) and Pipe Fill Mode (29.075).

Where a flow switch is not fitted, set Flow Switch Input (29.066) to On(1) and perform a drive parameter save to prevent a false no flow stop.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), if no flow from a flow switch is required, the pipe fill feature must be used to prime the pump and pipe system to prevent false no flow stops. It is recommended to set Pipe Fill Mode (29.075) = Flow Switch, and cofigure the remaining pipe fill parameters to suit the system. When the pipe fill routine is running, no flow detection from the flow switch is disabled.

This defines the continuous time in seconds that the Flow Switch Input (29.066) must be set to Off(0) to detect a no flow condition. No Flow Switch Delay (29.067) filters out any intermittent No Flow conditions.

A suitable flow switch must be connected to a digital input routed to the Flow Switch Input (29.066) to allow the No Flow by switch functionality to operate.

If a flow switch is fitted then no flow by software detection is not required. The pump will be protected from running into a closed output using the flow switch.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See Flow Switch Input (29.066).

This indicates when a No Flow detection from a flow switch has been detected. This happens when the Flow Switch Input (29.066) = Off(0) for No Flow Switch Delay (29.067) seconds.

A suitable flow switch must be connected to a digital input routed to the Flow Switch Input (29.066) to allow the No Flow by switch functionality to operate.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See Flow Switch Input (29.066).

When No Flow Detection Threshold (29.069) is > 0, software detection of no flow is enabled. This defines the frequency or speed threshold below which software based no flow is detected. This must be set to the greater of the Positive Minimum Reference Clamp (01.004) OR the Sleep Detect Speed Threshold (29.051) + No Flow Detection Band (29.070). In the event of a closed pump discharge, the main process PID feedback will rise causing the motor frequency or speed to dip below this level.

When No Flow Detection Threshold (29.069) = 0, software detection of no flow is disabled.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then then no flow detection when running in Auto mode is disabled.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

No flow by software detection is particularly helpful when controlling pumps that have a flat pressure to speed relationship at maximum pressure. This is when changes in speed result in little or no change in pressure (head), where the discharge valve may be closed slowly resulting in no flow, but the pressure feedback does not change, which may leave the pump drive running. In this scenario, a PID controller alone is unable to regulate the pump speed due to the static feedback response. The following diagram illustrates the operating region where the no flow by software detection system may be helpful. 

The No Flow by software detection scheme is made up of four stages:

1. Is the motor frequency or speed is < No Flow Detection Threshold (29.069)? If yes, move to the next step.
2. Is the motor frequency or speed within the No Flow Detection Band (29.070) for No Flow Detection Delay (29.071) seconds? If yes, move to the next step.
3. Reduce the main process PID setpoint by No Flow Setpoint Reduction (29.073) and wait for the No Flow Setpoint Settling Delay (29.072) to elapse. Is the PID is unable to follow the new setpoint? If yes, move to the next step.
4. Stop the system and set No Flow Output (29.074) to On(1). If the feedback is within the PID At Setpoint Output (29.046) window, move to step 1.

Note that in a Multi-leader or Cascade system that the system must have removed all of the assists before the no flow by software detection system will operate. It is therefore essential that the sleep threshold is set higher than the frequency or speed that the system settles at when the output valve is closed, so any connected assists will be removed from operation. This is particularly important when running at the maximum pressure the pump is rated for and the output valve is closed slowly.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the frequency or speed band used by the software no flow detection scheme. It is recommended to set this to 10% of the Maximum Reference Clamp (01.006). In the event of a closed pump discharge, the PID feedback will rise causing the motor frequency or speed to dip into this band.

This is only used when No Flow Detection Threshold (29.069) is > 0. See No Flow Detection Threshold (29.069) for details on the no flow by software detection process.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then then no flow detection when running in Auto mode is disabled.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See No Flow Detection Threshold (29.069).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the continuous time in seconds that the motor frequency or speed must be below the No Flow Detection Threshold (29.069) to complete stage 1 of the no flow by software detection scheme. No Flow Detection Delay (29.071) filters out any intermittent No Flow conditions.

This is only used when No Flow Detection Threshold (29.069) is > 0. See No Flow Detection Threshold (29.069) for details on the no flow by software detection process.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then no flow detection when running in Auto mode is disabled.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See No Flow Detection Threshold (29.069).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the continuous time in seconds that the no flow by software detection scheme will wait after applying the No Flow Setpoint Reduction (29.073) before checking if the main process PID is able to track the change in setpoint. If the main process PID isn't able to track the change in setpoint a no flow by software detection stop is actioned and No Flow Output (29.074) is set to On(1).

This is only used when No Flow Detection Threshold (29.069) is > 0. See No Flow Detection Threshold (29.069) for details on the no flow by software detection process.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then then no flow detection when running in Auto mode is disabled.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See No Flow Detection Threshold (29.069).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the main process PID setpoint reduction value used in stage 2 of detecting no flow by software.  After applying the No Flow Setpoint Reduction (29.073) and waiting for the No Flow Setpoint Settling Delay (29.072) to elapse, the software will check to see if the main process PID hasn't been able to track the change in setpoint; if it hasn't then software no flow is detected. and the system will stop.

The drive checks if the PID has followed the No Flow Setpoint Reduction (29.073) by checking if PID At Setpoint Output (29.046) = On(1). Note that No Flow Setpoint Reduction (29.073) must be greater than PID At Setpoint Band (29.045) for the no flow by software detection system to operate correctly.

This is only used when No Flow Detection Threshold (29.069) is > 0. See No Flow Detection Threshold (29.069) for details on the no flow by software detection process.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then then no flow detection when running in Auto mode is disabled.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure setpoint reduction with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See No Flow Detection Threshold (29.069).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When set to On(1), this indicates that the system has stopped due to software based no flow detection. The No Flow by software detection scheme is made up of four stages:

1. Is the motor frequency or speed is < No Flow Detection Threshold (29.069)? If yes, move to the next step.
2. Is the motor frequency or speed within the No Flow Detection Band (29.070) for No Flow Detection Delay (29.071) seconds? If yes, move to the next step.
3. Reduce the main process PID setpoint by No Flow Setpoint Reduction (29.073) and wait for the No Flow Setpoint Settling Delay (29.072) to elapse. Is the PID is unable to follow the new setpoint? If yes, move to the next step.
4. Stop the system and set No Flow Output (29.074) to On(1). If the feedback is within the PID At Setpoint Output (29.046) window, move to step 1.

Note that if the main process PID has been disabled via PID1 Enable (14.008), then then no flow detection when running in Auto mode is disabled.

In the event that a no flow is detected, Operating Status (29.003) will transition to Sleeping and the motor will stop.

See No Flow Detection Threshold (29.069).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This defines the operating mode of the automated pipe fill routine. The following options are available:

The pipe fill routine is intended for pumping systems that have to purge large volumes of air from the water distribution system, on start up, such as an agricultural irrigation system.

The feature may also be used to start submersible pumps that need to be run rapidly up to around 80% of their rated speed for a fixed time before switching to PID control, or to simply preset the output of the PID to reduce overshoot on wake. To do this:

• Set Pipe Fill Mode (29.075) to Feedback Level.
• Set Pipe Fill Threshold (29.076) to a value greater than PID Feedback Maximum Scaling (29.032) - this prevents the pressure threshold from ending the pipe fill routine early.
• Set Pipe Fill Maximum Time (29.077) to the time required to start the submersible pump.
• Set Pipe Fill Reference (01.024) to the frequency or speed required when starting the submersible pump.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), if no flow from a flow switch is required, the pipe fill feature must be used to prime the pump and pipe system to prevent false no flow stops. It is recommended to set Pipe Fill Mode (29.075) = Flow Switch, and cofigure the remaining pipe fill parameters to suit the system. When the pipe fill routine is running, no flow detection from the flow switch is disabled.

The units of this parameter, are defined by the feedback type and scaling, PID Feedback Minimum Scaling (29.031) and PID Feedback Maximum Scaling (29.032), e.g. if the feedback transducer connected to Analog input 1 is a pressure sensor then this is a pressure threshold with the same scaling. The units shown on the keypad display and the the number of decimal places for this parameter may be selected using PID Unit Select (29.184) and PID Unit Decimal Places (29.185).

See Pipe Fill Mode (29.075).

This defines the maximum time in seconds that the pipe filling routine will run for in the event that pipe filled isn't detected by either feedback detection or flow switch detection.

See Pipe Fill Mode (29.075).

When set to On(1), this indicates that the pipe filling routine has completed.

When set to Off(0), this indicates that the pipe filling routine is not enabled via Pipe Fill Mode (29.075) or pipe filling has not been completed.

See Pipe Fill Mode (29.075).

If Level Switch High Input (29.079) and Level Switch Low Input (29.080) = On(1) the high switch action has priority and the system will stop.

If Level Switch High Input (29.079) and Level Switch Low Input (29.080) = On(1) the high switch action has priority and the system will stop. The low level switch is only active when running in Auto mode.

This is intended to be used in a pumping system where the PID is not in use, PID1 Enable (14.008) = Off(0), and the system must fill a tank until the high level switch is reached, and then let the level fall until the low level switch is reached where the system will start again. If PID1 Enable (14.008) = On(1), then the system must hit the low level switch and meet the wake criteria e.g. Wake Detect Feedback Threshold (29.049).

This defines the minimum time in seconds for either a high or low level switch activation to be maintained for regardless of the state of the Level Switch High Input (29.079) or Level Switch Low Input (29.080). A fixed 500ms switch debounce delay is added when confirming a level high or low switch activation.

This defines the band below the Maximum Reference Clamp (01.006) where the drive is considered to be at the maximum reference as indicated by At Maximum Drive Reference  (29.084). This can be used to tell if the drive has reached full capacity while trying to achieve the main process PID setpoint.

This is used as part of the Dry Well Low Load detection scheme; see Dry Well Low Load Detection Delay (29.058).

When Set to On(1), this indicates that the drive has entered the Maximum Drive Reference Band (29.083)  reached the maximum reference possible where the drive is considered to be at full capacity while trying to achieve the main process PID setpoint.

This indication is used as part of the Dry Well Low Load detection scheme; see Dry Well Low Load Detection Delay (29.058).

This is the input for an external pump fault indication where Off(0) = no external fault, On(1) = external fault where the drive will trip on Ext Pump Fault. A digital input with an external pump fault signal connected should be routed to External Pump Fault Input (29.085). This is intended to cause the system to stopthe sytem with a trip in the event of a 3rd party device indicating that it is faulty.

Motor Thermal Protection Enable (29.087) must be set to On(1) to enable the Motor Thermal Protection Input (29.086). If Motor Thermal Protection Enable (29.087) = Off(0), Motor Thermal Protection Input (29.086) is disabled. 

This is the input for a motor over-temperature switch, e.g. a bimetallic thermal switch where On(1) = Motor temperature is OK, Off(0) = Motor temperature is too high where the drive will trip on Motor Over Temp. A digital input with a motor over-temperature switch connected should be routed to Motor Thermal Protection Input (29.086).

When set to Off(0), to the Motor Thermal Protection Input (29.086) is disabled.

See Motor Thermal Protection Input (29.086).

When set to On(1) and provided Hand Select Input (29.013) = Off(0) and Auto Select Input (29.015) = Off(0), this will manually start a cleaning cycle. The pump cleaning cycle will run for as long as Clean Manual Input (29.088) remains set to On(1).

When set to Off(0), a manually started pump cleaning will stop wherever it is in the cleaning cycle. 

Clean Manual Input (29.088) is superseded if Hand or Auto mode is selected via Hand Select Input (29.013) and Auto Select Input (29.015).

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

When set to On(1), this activates the pump cleaning cycle when the system is first run in Auto mode i.e. if the system goes to sleep and then wakes in Auto mode cleaning on start will not be triggered. If the pipe fill function is enabled via Pipe Fill Mode (29.075), then the pipe fill routine will happen first.

When set to Off(0), pump cleaning on start is disabled.

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

When set to On, this activates cleaning on interval. The interval is started when Auto mode is selected where the pump cleaning cycle will happen at the end of the interval, each time the interval elapses. The interval is defined by Clean On Interval Time (29.096).

This method of cleaning is not available when Pump Control Mode (29.011) = Cascade.

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

This defines the time in seconds that the pump will spend at Cleaning Phase 1 Reference (01.025) before moving to phase 2 of the pump cleaning cycle.

This defines the time in seconds that the pump will spend at Cleaning Phase 2 Reference (01.026) before moving to phase 3 of the pump cleaning cycle.

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

This defines the time in seconds that the pump will spend at Cleaning Phase 3 Reference (01.027) before completing the pump cleaning cycle.

See Cleaning Phase 1 Time At Reference (29.093) for a complete cleaning cycle profile diagram.

This defines the pump cleaning time interval in minutes used when Clean On Interval (29.090) = On(1). If the drive is running in Auto mode, when Clean On Interval Time (29.096) elapses a cleaning cycle is actioned. If the drive is sleeping in Auto mode when the Clean On Interval Time (29.096) elapses, a clean will be actioned next time the drive runs.

A high current can by caused by a blocked pump rotor, and low current can be caused by a blocked pump input. The low and high current threshold should be set outside of the normal pumping current range.

This defines the low load current threshold below which a clean on load current is initiated. Clean On Load Current Low Threshold (29.099) is compared against Percentage Load (04.020). Clean On Load Current Delay (29.097) filters out any intermittent load current conditions that would otherwise trigger a clean on load current.

A high current can by caused by a blocked pump rotor, and low current can be caused by a blocked pump input. The low and high current threshold should be set outside of the normal pumping current range.

This defines the maximum number of pump cleaning cycles per hour. The action taken when the limit is reached is configured by the Clean Per Hour Limit Mode (29.101). When this limit is reached the Clean Per Hour Alarm Output (29.105) = On(1).

This sets the action taken when the Clean Per Hour Limit (29.100) is reached. The following modes are available:

This indicates the load current percentage sampled from Percentage Load (04.020) prior to running the cleaning cycle. By using Pre-clean Load Current (29.102) and comparing it to Post-clean Load Current (29.103) it is possible to see if the cleaning cycle was effective.

Pre-clean Load Current (29.102) and Post-clean Load Current (29.103) are not updated if the cleaning cycle was started either manually via Clean Manual Input (29.088) or on start up via Clean On Start (29.089).   

This indicates the load current percentage sampled from Percentage Load (04.020) after running the cleaning cycle. By using Pre-clean Load Current (29.102) and comparing it to Post-clean Load Current (29.103) it is possible to see if the cleaning cycle was effective.

This indicates when a pump cleaning cycle is running.

When Clean Per Hour Limit Mode (29.101) = Alarm Only or Stop Cleaning, this indicates when the Clean Per Hour Limit (29.100) has been reached.

Assist Control Mode (29.106) is only used when Pump Control Mode (29.011) = Cascade or Cascade Leader.

This selects how much I/O is required to control assist soft starters. Three options are available:

The Soft Starter assists are called to run or stop using Add Assist Delay (29.122), Add Assist Band (29.123) and Remove Assist Delay (29.124). The starting order of the Soft Starter assists is rotated using the Alternation Time (29.125).

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

When Pump Control Mode (29.011) = Cascade Leader and Assist Control Mode (29.106) = Full I/O OR Run+Ready, and there are no pumps “Ready” as indicated by Assist 1 Ready Input (29.108), Assist 2 Ready Input (29.114), Assist 3 Ready Input (29.160), and Assist 4 Ready Input (29.166) are all set to Off(0), the drive will wait in this state until a pump becomes “Ready”.

This is the Run command output for Assist 1. A digital output must be routed to this parameter where the subsequent 24V signal is connected to the run Input of Soft Starter Assist 1.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

Assist 1 Ready Input (29.108) is only used when Assist Control Mode (29.106) = Full I/O or Run+Ready.

This is the Ready feedback input for Assist 1. A digital input must be routed to this parameter where a 24V signal is connected to a ready or healthy output from Soft Starter Assist 1.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

Assist 1 Running Input (29.109) is only used when Assist Control Mode (29.106) = Full I/O.

This is the Running feedback input for Assist 1. A digital input must be routed to this parameter where a 24V signal is connected to a running output from Soft Starter Assist 1.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.

This indicates the running time for Assist Soft Starter 1 in minutes since the Leader drive was powered up.

When basic mode is selected, (Pump Control Mode (29.011) = Basic), this feature is disabled internally where all user parameters related to this feature will cease to have an effect.