Operating instructions

Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without encoder
Drive converter cabinet units
Operating Instructions, 10/2008, A5E00288214A
289
7.4.5 Torque limiting
Description
0OLPLWV
,OLPLWV
3OLPLWV
0D[
0LQ
p 1520
p 1521
r 1526
r 1527
p 0640
p 1530
p 1531
r 1538
r 1539
r 1407 . 9
r 1407 . 8
Figure 7-17 Torque limiting
The value specifies the maximum permissible torque whereby different limits can be
parameterized for motor and regenerative mode.
• p0640
Current limit
• p1520
CO: Torque limit, upper/motoring
• p1521
CO: Torque limit, lower/regenerative
• p1522
CI: Torque limit, upper/motoring
• p1523
CI: Torque limit, lower/regenerative
• p1524
CO: Torque limit, upper/motoring, scaling
• p1525
CO: Torque limit, lower/regenerative scaling
• p1530
Power limit, motoring
• p1531
Power limit, regenerating
The currently active torque limit values are displayed in the following parameters:
• r0067
Maximum drive output current
• r1526
Torque limit, upper/motoring without offset
• r1527
Torque limit, lower/regenerative without offset
All of the following limits act on the torque setpoint – that is either available at the speed
controller output for closed-loop speed control or as torque input, for closed-loop torque
control. The minimum or the maximum is used for the various limits. This minimum or
maximum is cyclically calculated and is displayed in r1538 or r1539.
• r1538
Upper effective torque limit
• r1539
Lower effective torque limit