TECO F510 series - Group 21 Torque Control Parameters

4-258
Derating of torque compensation function can reduce derating effect of ASR at shock load. Refer to Fig.
4.4.97 & Fig. 4.4.98.
20-34 Derating of Compensation Gain:
This gain effect is the same as the proportional gain of ASR (20-00, 20-02), but it is required to be with the
derating compensation time (20-35) of larger speed tolerance to prevent the inverter from oscillation.
20-35 Derating of Compensation Time:
This time constant is used for the inhibition of oscillation caused from parameter 20-34, but excessive
compensation time constant leading to slower output response is unfavorable to derating compensation.
The recommended setting value of 20-34 is 30~50 and that of 20-35 is 50~100ms.
Group 21 Torque Control Parameters
21- 05
Positive Torque Limit
Range 【0~160】%
21- 06
Negative Torque Limit
Range
【0~160】%
21- 07
Forward Regenerative Torque Limit
Range
【0~160】%
21- 08
Reversal Regenerative Torque Limit
Range
【0~160】%
Torque limit can be set in two ways:
- Use torque limit parameters (21-05 to 21-08) to set a fixed torque limit.
- Set the torque limit by using the multi-function analog input (AI2).
There are four torque limits that can be set separately, one for each quadrant:
(I) Positive torque limit in forward direction (21-05 positive torque limit)
(II) Positive torque limit of reverse direction (21-08 negative torque limit)
(III) Negative torque limit in reverse direction (21-06 forward regenerating torque limit)
(IV) Negative torque limit in forward direction (21-07 reversal regenerating torque limit)
Refer to Fig.4.4.101.
Figure 4.4.101 Torque limit setting
Torque limit setting by using multi-function analog input AI2 (04-05)