Control system and interfaces 45
Alarm and fault indications
When a failure occurs in the drive or in the equipment monitored by the drive, the control
panel displays a corresponding alarm or fault message and the red Fault / Alarm button on
the control compartment door lights up:
Emergency off
The Emergency off button initiates an immediate stop of the drive.
In the event of an Emergency off, the following happens immediately:
• the pulses of the inverter are blocked
• the MCB is tripped.
• the DC link is discharged.
All auxiliary circuits remain live.
Monitoring
Basic system monitoring is done with the local control panel. For more detailed diagnosis
and signal monitoring the Drive Composer – PC tool is available.
I/O interfaces
Customer control and process I/Os
This chapter provides an overview of the hardwired I/Os. For details refer to ACS580MV
Engineering Guideline and ACS580MV Catalog.
Please note that this I/O interface only available in standard option, if Synchronized
Bypass or manual bypass selected, please see I/O interface in separated Synchronized
Bypass hardware manual or Manual bypass hardware manual.
Button /
Light
Color Status Meaning
Fault/Alarm Red
Off Normal operation
Flashing Alarm pending
On Drive in fault state.
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