Emergency-Off Sequence; Prevention Of Unexpected Startup Sequence - ABB ACS6080 User Manual

8.9.3

Emergency-off sequence

1) Operation
2) Ready ref
3) Emergency-off command
4) Emergency-off
8.9.4

Prevention of unexpected startup sequence

1) Operation
2) Ready ref
3) Prevention of unexpected startup command
4) INU operation prevention feedback
3BHS842007 E01 REV C
• Stop command to ARU (only in drives with an ARU)
• MCB opens
• INU stops modulating
• Speed coasts down
• Drives stops according to Ramp, Torque, and Ramp
stop modes
• Open disconnector
• Prevention of unexpected startup complete
• Drive remains charged, MCB closed
ACS6080 USER MANUAL
08 OPERATION
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