ABB ACS2000 DFE User Manual page 116

116 ACS2000 DFE UM 3BHS360367 ZAB E01 REV. K
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8.8 Emergency-off
The procedure to perform an emergency shut-down is described
below.
8.8.1 Function
The drive is equipped with a hard-wired emer-
gency-off circuit. When an emergency situation
occurs during operation, this safety feature
ensures that the drive can be disconnected with-
out delay from the main power supply. When the
emergency-off pushbutton has been pressed while
the drive is at standstill, the main power supply
cannot be connected to the drive, hence the drive
cannot be started up.
The emergency-off pushbutton of the drive is part
of the operator control panel
latching switch action.
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Pressing the emergency-off push-
button does not disconnect the
auxiliary power supply from the
drive.
8.8.2 Initiating an emergency-off
An emergency-off is initiated by pressing the
EMERGENCY OFF pushbutton on the control com-
partment door or an external emergency-off push-
button linked to the emergency-off circuit.
When an emergency-off is initiated during drive
operation, the following takes place:
• The MCB opens.
• The drive coasts down.
• The DC link of the drive discharges.
• The status line of the CDP control panel alter-
nates between the message EmergencyOff,
NotReadyOn.
• The EMERGENCY RESET pushbutton flashes.
(8-1) and features a
1 L -> 600.0 rpm
EmergeOff
StateINU
MOTOR SP 0.00 rpm
POWER
0.0 kW
• The SUPPLY OFF pushbutton flashes.
8.8.3 Starting the drive after an emergency-off
1. To start up the drive after an emergency-off,
the emergency-off, unlatch the EMERGENCY
OFF pushbutton.
The EMERGENCY OFF pushbutton returns to its
initial position when turned into the direction
indicated by the arrows on the pushbutton.
2. To reset the emergency-off safety relay of the
drive, press the EMERGENCY RESET pushbut-
ton.
After resetting, the status message of the drive
changes to ReadyOn.
1 L ->
StateINU
MOTOR SP
POWER
The main power supply can be connected to the
drive again and the drive can be started up.
EmergencyOff
NotReadyOn
0.0 rpm
ReadyOn
0.00 rpm
0.0 kW