Group 4.7 - Slip Compensation
Parameter Number | Parameter Name | Units | Default | Available Settings | Access | Change During Run | Scaling | Size (Bytes) | CAN Register | CAN Sub Index | Modbus Register |
|---|---|---|---|---|---|---|---|---|---|---|---|
P4-20 | Slip Compensation Gain in Motoring mode | % | 100.0% | 0.0 ... 400.0% | RW | Y | 1 = 0.1% | 2 | 21A4h | 0 | 420 |
P4-21 | Slip Compensation Gain in Regenerating mode | % | 100.0% | 0.0 ... 400.0% | RW | Y | 1 = 0.1% | 2 | 21A5h | 0 | 421 |
The elevator can have different travel speeds in each direction under the same load. This is called slip (difference between synchronous speed and asynchronous speed).
For example if the nominal speed of a motor is 1430rpm. With an empty car in the downwards direction the speed is 1430 rpm. In upwards direction the speed is 1570rpm.
To eliminate this use P4-20 when in motoring mode (positive torque direction).
As per P4-20 use this parameter when in regeneration mode.