Efficient Networks S120 Fixed and variable torque limit settings, Variants of torque limitation

				Servo control
				3.5 Torque setpoint limitation
Fixed and variable torque limit settings
Table 3-1	Fixed and variable torque limit settings
	Selection		Torque limitation mode
Mode		Maximum upper or lower torque limits		Maximum motor or regenerative mode torque
		p1400.4 = 0		limits p1400.4 = 1
Fixed torque limit		Upper torque limit (as positive	p1520	Motor mode torque limit (as	p1520
		value)		positive value)
		Lower torque limit (as negative	p1521	Regenerative mode torque limit (as	p1521
		value)		negative value)
Source for variable torque		Upper torque limit	p1522	Motor mode torque limit	p1522
limit		Lower torque limit	p1523	Regenerative mode torque limit	p1523
Source for variable scaling		Upper torque limit	p1528	Motor mode torque limit	p1528
factor of torque limit		Lower torque limit	p1529	Regenerative mode torque limit	p1529
Torque offset for torque		Shifts the upper and lower	p1532	Shifts the motor and regenerative	p1532
limit		torque limits together		mode torque limits together

Variants of torque limitation

The following variants are available:

1.No settings entered:

The application does not require any additional restrictions to the torque limits.

2.Fixed limits are required for the torque:

The fixed upper and lower limits or alternatively the fixed motor and regenerative limits can be specified separately by different sources.

3.Dynamic limits are required for the torque:

–The dynamic upper and lower limit or, alternatively, the dynamic motor and regenerative limit can be specified separately by different sources.

–Parameters are used to select the source of the current limit.

4.A torque offset can be parameterized.

5.In addition, the power limits can be parameterized separately for motor and regenerative mode.

NOTICE

Negative values at r1534 or positive values at r1535 represent a minimum torque for the other torque directions and can cause the drives to rotate if no load torque is generated to counteract this (see function diagram 5630 in the SINAMICS S List Manual).

Drive Functions	73
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4