ABB ACS880-204LC, Hardware Manual

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Supply unit control devices
￭ Main disconnecting device
The unit must be equipped with a main circuit breaker [Q1]. With this device, you can isolate
the main circuit of the drive from the power line.
WARNING!
The breaker does not isolate the input power terminals or the auxiliary circuit from
the power line. To isolate the input power terminals, open the main breaker of the
supply transformer and lock it to the open position.
￭ Auxiliary voltage switch
The unit can be equipped with an auxiliary voltage switch [Q21]. Using the switch, you can
disconnect the auxiliary circuit from the power line.
￭ Operating switch
The cabinet can be equipped with an operating switch [S21].
By default, the operating switch controls the unit as follows:
• The ENABLE/RUN position: The control program closes the charging contactor [Q4]
and the main DC link is charged. After the DC link is charged, the main circuit breaker
[Q1] will be closed and the charging contactor [Q4] opened. The module starts operating.
• The OFF position: The control program opens the main circuit breaker [Q1] and the
module stops rectifying.
￭ Emergency stop and emergency stop reset buttons
The cabinet can be equipped with an emergency stop button and an emergency stop reset
button. Pressing the emergency stop button activates the emergency stop function of the
supply unit. The button locks to open position automatically. You must release the button
before you can return to the normal operation. Before the restart, you also need to reset
the emergency stop circuit with the reset button.
Note:
The customer is fully responsible for implementing and testing the functional safety circuits
according to the relevant legislation and acceptance testing regulations. The functional
safety option manuals give examples on implementing the safety circuits in ACS880
liquid-cooled multidrives.
￭ ACX-AP-x control panel
The ACX-AP-x control panel is the user interface of the unit. With the control panel, you
can:
• start and stop the unit
• view and reset the fault and warning messages, and view the fault history
• view actual signals
• change parameter settings
• change between local and external control.
To be able to start and stop the unit by the control panel, you must have the
parameter-defined Run enable signal and Start enable signal on (1). The control panel must
also be in local control mode.
Operation principle and hardware description 27