Control devices, Modes of operation – Rockwell Automation 20Y PowerFlex Active Front End User Manual
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Rockwell Automation Publication 20Y-UM001E-EN-P - July 2014
Chapter 3
Startup
Status Indicators
For information on AFE status indicators, see
Control Devices
The following figure shows the operators or control devices (switches,
pushbuttons, and status indicators) on a IP21 Rittal enclosure.
Figure 39 - Control Devices for AFE in IP21 Rittal Enclosure
The AFE READY status indicator lights up when precharge is completed, the
MCCB is closed, AC power is connected to the AFE, and no faults are active.
The AFE READY status indicator operates independent of the control method.
The MCCB FAULT status indicator lights to indicate that the circuit breakers
are in a tripped state.
In an over-current situation, the fault that caused the circuit breaker to trip must
be identified and fixed before resetting the circuit breakers. The MCCB can be
reset only by pressing the MCCB RESET pushbutton when the MCCB
CONTROL switch is in MAN.
MCCB (Motor-Controlled Circuit Breaker) and Modes of Operation
There are three different modes in which the MCCB and precharge can be
controlled. The desired control is selected with the MCCB CONTROL selector
switch.
1. AUTO
—Automatic operation that automatically precharges and closes
the MCCB when the supply voltage is energized.
a. Set the MCCB CONTROL switch to AUTO.
b. Set the 0-1-START switch to 1 (on).
AFE READY
MCCB CONTROL
(REM — MAN — AUTO)
0 — 1 — START
MCCB FAULT
MCCB RESET
0
1
MAN
AUTO
REM
START