Limit To Limit Control Function - ABB ACS380 Firmware Manual

ACS380 FW.book Page 95 Friday, May 4, 2018 4:18 PM
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Limit to limit control function

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Limitations
• The external stop or slow down signals (in either direction) must not be on when
the Limit to limit function is activated for the first time. If that is not possible,
change the state manually to match the actual status in the Limit to limit state
parameter (76.01).
• When drive is stopped, the load must not be moved with external force (the drive
cannot monitor direction). If this happens, the Limit to limit state can be manually
changed to the correct one in parameter Limit to limit state parameter (76.01).
• Coast stop without mechanical brake may cause load moving without Limit to limit
control (drive is not controlling load movement). If this happens, the Limit to limit
state can be manually changed to the correct one in parameter Limit to limit state
parameter (76.01).
• When Limit to limit control is in Pulse mode then the state is saved over power
cycle. The load must not be moved when the drive is powered off. If this happens,
then Limit to limit state can be manually changed to the correct one in parameter
Limit to limit state parameter (76.01).
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LIMIT-TO-LIMIT
PHASE 1
FWD
MAX
+SLOW
ZERO
-SLOW
MIN
REV
STATES
Program features 95