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•
The Run/Enable position: The control program receives the Run/Enable command
through the digital input DI2. The control program closes the main contactor [Q2] or
main breaker with relay output RO3. The module starts rectifying and charging the DC
link of the drive.
•
The Off position: The control program does not receive the Run/Enable command
through the digital input. The program opens the main contactor [Q2] or main breaker
with the relay output and the module stops rectifying.
For more information on the on/off control logic, see ACS880 diode supply control program
firmware manual (3AUA0000103295 [English]).
￭
Emergency stop and emergency stop reset buttons
The cabinet can be equipped with an emergency stop button [S61] and an emergency stop
reset button [S62]. 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
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.
To change between local and remote control mode, press the Loc/Rem key of the control
panel. For the instructions on the use of the panel, see ACX-AP-x Assistant control panels
user's manual (3AUA0000085685 [English]). For the parameter settings, see the firmware
manual.
￭
PC connection
There is a USB connector on the front of the control panel that can be used to connect a
PC to the drive. When a PC is connected to the control panel, the control panel keypad is
disabled.
￭
Fieldbus control
You can control the unit through a fieldbus interface if the unit is equipped with an optional
fieldbus adapter and when you have configured the control program for the fieldbus control
with the parameters. For information on the parameters, see the firmware manual.
Note: To be able to switch the main contactor [Q2] and the supply unit on and off (Run
enable signal) through the fieldbus, the Run enable command at digital input DI2 must be
on (1).
Operation principle and hardware description 27
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