Operating Instructions ACU
Interior temperature too low, check control cabinet heating.
Motor temperature too high or sensor defective, check connection S6IND.
Motor circuit breaker tripped, check drive.
V-belt monitoring reports no load on the drive.
Phase failure, check motor and wiring.
Control Deviation Position Controller Refer to Positioning application manual.
Start monitoring. Check brake & limiting parameters, such as Current Limit 728,
intelligent current limits, etc.
Overloaded, check load situation and ramps.
Instantaneous output current value too high. Check load.
Dynamic phase current limitation. Check load.
Short circuit or earth fault, check motor and wiring.
Overloaded, check load situation and current value limit controller.
Asymmetric motor current, check current and wiring.
Motor phase current too high, check motor and wiring.
Message from phase monitoring, check motor and wiring.
DC link voltage too high, check deceleration ramps and connected brake resistor.
DC link voltage too low, check mains voltage.
Mains failure, check mains voltage and circuit.
Phase failure, check mains fuse and circuit.
Reference DC-Link Limitation 680 too small, check mains voltage.
Brake chopper Trigger Threshold 506 too small, check mains voltage
Motor chopper Trigger Threshold 507 too small, check mains voltage
Electronics voltage DC 24 V too low, check control terminal.
Electronic voltage too high, check wiring of control terminals.
Also refer to Chapter 19.4 "19.4".
Output frequency too high, check control signals and settings.
Max. frequency achieved by control, check deceleration ramps and connected brake
resistor.
Frequency limit See application manual "Hoisting Gear Drives".
Table "Fault Messages" continued on next page.
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