B&R ACOPOSinverter P84, User Manual

Page: 256 / 405

Programming guidelines
256 ACOPOSinverter P84 User's Manual 2.10
2.8.11.18 Torque control
Speed controller
[Pref. Torque]
(tSd)
[Coeff Torque]
(trt)
[Time torque ramp]
(trP)
Torque/Current
limits
LI LI
M
Speed reference
Torque
Reference
Speed
Torque
The function can be used to switch between the operation in speed-controlled mode and in torque-controlled mode.
In torque-controlled mode, the speed can vary within a configurable "dead band". If it has reached a lower or upper
limit value, the inverter automatically falls back into the speed-controlled mode (fallback) and maintains the speed
limit. The controlled torque is then no longer maintained so that two scenarios can occur.
• If the torque reaches the required value again, the inverter returns to torque-controlled mode.
•
If the torque does not reach the required value within a configurable period of time, the inverter goes into
fault or alarm mode.
Warning!
ACCIDENTAL OPERATION OF DEVICE
Make sure that changes to settings during operation do not cause any hazards.
Failure to follow these instructions will result in death or serious injury.
– AB and CD: "Fallback" in the case of speed control
– BC: Torque control range
– E: Ideal operating value
Torque
Torque limit
Torque reference
A
B
E
C
Dead
band
Speed
D
Speed reference Speed
The sign and the value of the torque can be transferred via a logic output and an analog output.