Emergency-Off; Function; Initiating An Emergency-Off - ABB ACS5000 User Manual

ABB
8.8

Emergency-off

8.8.1

Function

8.8.2

Initiating an emergency-off

5k A UM
The drive is equipped with a hard-wired emergency-off circuit. When an
emergency situation occurs during operation, this safety feature ensures
that the drive can be disconnected without 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 (Fig. 8-1)
Pressing the EMERGENCY-OFF pushbutton does not disconnect the
auxiliary power supply from the drive.
To initiate an emergency-off, press the EMERGENCY-OFF pushbutton on
the control compartment door or an external EMERGENCY-OFF
pushbutton (if present) linked to the emergency-off circuit.
When an emergency-off is initiated during drive operation, the following
takes place:
■ The MCB opens.
■ The drive system coasts down.
■ The DC link of the drive discharges.
■ The status line of the CDP control panel alternates between the
message EmergencyOff, NotReadyOn.
1 L ->
StateINU
MOTOR SP
POWER
■ The EMERGENCY-OFF RESET pushbutton flashes.
■ The SUPPLY OFF pushbutton flashes.
3BHS221906 ZAB E01 Rev. D
and features a latching switch action.
600.0 rpm
EmergeOff
0.00 rpm
0.0 kW
Chapter 8 - Operation
EmergencyOff
NotReadyOn
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