Siemens SINAMICS G120P, Operating Instructions Manual

Page: 350 / 496

Functions
7.4 Setpoint calculation
Inverter cabinet units
350
Operating Instructions, 12/2014, A5E32923362A
7.4.3 Enable direction of rotation
In the factory setting of the inverter, the negative direction of rotation of the motor is inhibited.
Proceed as follows to enable the negative direction of rotation:
Set parameter p1110 to a value = 0.
The positive direction of rotation is enabled in the factory setting; you can inhibit this direction
of rotation using p1111 = 1.
Table 7- 16 Examples of settings to inhibit the direction of rotation
Parameter Remark
p1110 = 1 Inhibit negative direction
Negative direction is permanently inhibited.
p1110 = 722.3 Inhibit negative direction
Digital input 3 = 0: Negative direction of rotation is enabled.
Digital input 3 = 1: Negative direction of rotation is inhibited.
7.4.4 Minimum speed
The inverter prevents continuous motor operation
at speeds < minimum speed.
Speeds, where the absolute value is less than the
minimum speed, are only possible when acceler-
ating or braking.
Table 7- 17 Setting the minimum speed
Parameter Description
p1080 Minimum speed
p1106 CI: Minimum speed signal source
The minimum speed is formed from the parameters p1080 and p1106, where the larger
value determines the effective minimum speed.