List of Parameters
Parameters
1-167
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Description: Selects command source for enabling of integrator setting.
Description: Selects source for integral part of speed controller.
Notice: Neither function works after flying start.
Note: If the P1482 (integral component of speed controller) is connected and the setting command is not connected
(P1477=0), upon pulse enable the integral component of the controller is set once to the last value prior the pulse
inhibit.
Description: Displays integral part of speed controller output.
Description: Selects source of droop input signal.
With mechanically coupled motors it is very important that an even load distribution is applied to each motor. The
load sharing can be achieved by enabling the droop function on both inverters.
1. Droop is applied as a frequency setpoint on each inverter. The droop increases the slip via the negative feedback
of the torque setpoint to the frequency setpoint. In a steady-state an even load distribution can be achieved if the
slip characteristics are identical.
- P1488 > 0
- P1489 > 0
- P1492 = 1
2. Droop can act as a setpoint or limitation for a group of inverters (i.e. master-slave inverters). By use of the master-
slave inverter technique an even load distribution is achieved across the whole application. This is accomplished
by setting the torque setpoint (r1490) on the master inverter which then controls the speed of the master inverter
and all connected slave inverters.
- P1488 > 0
- P1489 > 0
- P1492 = 0
Values: 0: Droop input disabled
1: Torque setpoint
2: Speed controller output
3: Speed controller integral output
Dependency: Droop scaling (P1489) must be > 0 for droop to be effective.
p1477[0...2] BI: Set integrator of n-ctrl. / Set integrator
Access level: 3 P-Group: Closed-loop control Data type: Unsigned32
Quick comm. NO Active: NO Data set: CDS
Can be changed: U, T
Min Max Factory setting
- - 0
p1478[0...2] CI: Set integrator value n-ctrl. / Set int. value
Access level: 3 P-Group: Closed-loop control Data type: Unsigned32
Quick comm. NO Active: NO Data set: CDS
Can be changed: U, T
Min Max Factory setting
- - 0
r1482 CO: Integral output of n-ctrl. / Int.outp n-ctrl
Access level: 3 P-Group: Closed-loop control Data type: Floating Point
Unit: [Nm] Data set: -
p1488[0...2] Droop input source / Droop input source
Access level: 3 P-Group: Closed-loop control Data type: Unsigned16
Quick comm. NO Active: NO Data set: DDS
Can be changed: U, T
Min Max Factory setting
0 3 0
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