Efficient Networks S120 manual Redundance operation power units, Features, Commissioning

Vector control

4.19 Redundance operation power units

(e.g. setpoint channel, sequence control, communication, technology function, etc.) can be tested in advance without requiring a motor.

For units with outputs of > 75 W it is recommended to test the activation of the power semiconductors after repairs. To do so, a DC voltage < 40 V is applied to the DC link, and the possible pulse patterns must be tested by the control software.

The software must allow enabling of the pulses and the output of various frequencies. This is implemented using V/f control or sensorless closed-loop speed control.

Note

Simulation mode cannot be activated without a power unit. A power unit must be connected via DRIVE-CLiQ.

4.18.2Features

●Automatic deactivation with a DC link voltage greater than 40 V (measurement tolerance

± 4 V) with fault message F07826 and immediate pulse inhibit (OFF2)

●Can be activated via parameter p1272

●Deactivation of line contactor activation during simulation mode

●Activation of power semi-conductor with low DC link voltage and with motor (for test purposes).

●Power unit and closed-loop control can be simulated without a connected motor.

4.18.3Commissioning

Simulation mode can be activated via p1272 =1. The following prerequisites must be fulfilled:

●Initial commissioning must be complete (default: Standard induction motors).

●The DC link voltage must be below 40 V (observe the tolerance of the DC link voltage sensing).

4.19Redundance operation power units

Features

●Redundance for up to 4 chassis power units

●Power unit can be de-activated via parameter (p0125)

●Power unit can be de-activated via binector input (p0895)

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