LOW HARMONIC CABINET DRIVE vacon • 53
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7
Figure 27. AFE Ready indicator
The Run command has to be given to the AFE unit from the keypad, I/O signal or bus communication
before the inverter INU can be started (operated).
7.1.2 Remote operation (REM)
It is possible to control the circuit-breaker and the charging circuit from a remote location/system
with potential-free contacts while the MCCB control switch –S6 is in
REM
position.
Normally closed (NC) contact has to be connected to terminals X1:60 and X1:61 (terminal name can
vary depending on the frame size). This contact has to be in the NC state before the pre-charging
can be activated. Opening this contact will open circuit-breakers and stop the ongoing pre-
charging.
A remote pulse duration (0.4-1s) connected to terminals X1:57 and X1:58 will start the charging of
the drive, and when DC voltage has reached a certain level, the AFE unit will automatically close the
circuit-breakers (terminal name can vary depending on the frame size). The Run command has to
be given to the AFE unit from the keypad, I/O signal or bus communication before the inverter INU
can be started (operated).
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