Operation Sequence; Maintenance To Vfd - ABB ACS580MV Hardware Manual

26 Operation principle and hardware description
X330 Customer Interface Terminal Block (MBU=0003, ABB contactors)
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Below lamp indicators can be found on front door for friendly operation:
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QF1 close/open
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KM1 close/open
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KM2 close/open
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KM3 close/open
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VFD mode
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Bypass mode
Switches for contactor manual operation can be found on the front door as well:
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KM1 close/open
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KM2 close/open
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KM3 close/open
Selector of local/remote/stop mode is also designed.

Operation sequence


In stop mode the 3 contactors cannot be operated anymore.
This section describes how the contactors operated, either manually or by the DCS.

Maintenance to VFD

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Check all the enclosures of drive and bypass unit are properly closed and VFD is
ready for operation
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Unlock the mode selection switch
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Set the mode selection switch to "Local position" or "Remote position"
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Lock the mode selection switch
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Close KM1
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Close KM2
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Close QF1.
KM1 Close CMD
KM1 Open CMD
KM2 Close CMD
KM2 Open CMD
KM3 Close CMD
KM3 Open CMD
Control Signal from customer
Internal supply 230 VAC, 2.5 A