Mode: Open‑Loop
| Parameter | 03.005 Zero Speed Threshold | ||
|---|---|---|---|
| Short description | Set to the required zero speed threshold | ||
| Mode | Open‑Loop | ||
| Minimum | 0.0 | Maximum | 20.0 |
| Default | 1.0 | Units | Hz |
| Type | 8 Bit User Save | Update Rate | Background read |
| Display Format | Standard | Decimal Places | 1 |
| Coding | RW, BU | ||
If the Post Ramp Reference (02.001) is at or below the level defined by this parameter in either direction Zero Speed (10.003) = 1, otherwise Zero Speed (10.003) = 0.
| Parameter | 03.006 At Speed Lower Limit | ||
|---|---|---|---|
| Short description | Set to the required minimum at speed threshold | ||
| Mode | Open‑Loop | ||
| Minimum | 0.0 | Maximum | 599.0 |
| Default | 1.0 | Units | Hz |
| Type | 16 Bit User Save | Update Rate | Background read |
| Display Format | Standard | Decimal Places | 1 |
| Coding | RW | ||
At Speed (10.006) is set if the Post Ramp Reference (02.001) is on the boundaries or within the at speed window. Above Set Speed (10.007) and Below Set Speed (10.005) are set if the reference is above or below the window respectively.
If Absolute At Speed Select (03.009) = 0 reference window mode is used.
The "at speed" condition is true if Reference On (01.011) = 1 and,
(|Pre-ramp Reference (01.003)| - At Speed Lower Limit (03.006)) ≤ |Post Ramp Reference (02.001)| ≤ (|Pre-ramp Reference (01.003)| + At Speed Upper Limit (03.007))
(If the lower limit is less than zero then zero is used as the lower limit.)
If Absolute At Speed Select (03.009) = 1 absolute window mode is used.
The "at speed" condition is true if Reference On (01.011) = 1 and,
At Speed Lower Limit (03.006) ≤ |Post Ramp Reference (02.001)| ≤ At Speed Upper Limit (03.007)
| Parameter | 03.007 At Speed Upper Limit | ||
|---|---|---|---|
| Short description | Set to the required maximum at speed threshold | ||
| Mode | Open‑Loop | ||
| Minimum | 0.0 | Maximum | 599.0 |
| Default | 1.0 | Units | Hz |
| Type | 16 Bit User Save | Update Rate | Background read |
| Display Format | Standard | Decimal Places | 1 |
| Coding | RW | ||
See At Speed Lower Limit (03.006).
| Parameter | 03.008 Over Speed Threshold | ||
|---|---|---|---|
| Short description | Set to the required over speed threshold | ||
| Mode | Open‑Loop | ||
| Minimum | 0.0 | Maximum | 599.0 |
| Default | 0.0 | Units | Hz |
| Type | 16 Bit User Save | Update Rate | Background read |
| Display Format | Standard | Decimal Places | 1 |
| Coding | RW | ||
If Over Speed Threshold (03.008) is set to a non-zero value it defines the over speed threshold. If the Post Ramp Reference (02.001) exceeds this threshold in either direction an Over Speed trip is produced. If Over Speed Threshold (03.008) is set to 0.0 the threshold is based on the variable minimum/maximum for the references and is equal to 1.2 x VM_SPEED_FREQ_REF[MAX].
| Parameter | 03.009 Absolute At Speed Select | ||
|---|---|---|---|
| Short description | Indicates when the motor is running at speed | ||
| Mode | Open‑Loop | ||
| Minimum | 0 | Maximum | 1 |
| Default | 0 | Units | |
| Type | 1 Bit User Save | Update Rate | Background read |
| Display Format | Standard | Decimal Places | 0 |
| Coding | RW | ||
See At Speed Lower Limit (03.006).