Konecranes DMCS022 - Page 30

Code Fault Possible cause Suggested solution Resetting
82 Overload • Overload situation detected
• Worn chain or chain drive
(chain hoist)
• Load sensor out of
calibration
• Load sensor failed
• Mechanical failure in gear
(chain hoist)
• Make sure that the load on
hook is not more than rated
load
• Check/replace chain and
chain drive
• Recalibrate load sensor by
performing load calibration
function
• If problem recurs after re-
calibration, replace load
sensor and perform offset
correction and calibration
• Check hoist gear operation
by observing noise, vibration
and so on
C
84 Clutch supervision • Clutch slipping detected
(chain hoist)
• Worn chain or chain drive
(chain hoist)
• Missing pulses in signal
connected to ENC2A-B
• Parameter P8,7 ENC2 Stall
Pulse Limit value too high
• Check/adjust clutch
adjustment
• Check/replace chain and
chain drive
• Check/replace speed sensor
connected to ENC2A-B
• Lower the parameter P8,7
ENC2 Stall Pulse Limit value
A
85 Load Sensor Fault • Load sensor signal out of
range
• Check/repair load sensor
wiring
• Check/replace load sensor
C
Resetting column explanation
• A = E-stop activation / deactivation
• B = Hoist supply voltage switch OFF / ON
• C = Automatic when fault situation is over
Table 12. ALARMS
Code Alarm Possible cause Suggested solution
6 External Stop ES-signal not active. Lift E-stop button.
51 Stop Limit Stop limit activated.
Break in limit switch
wiring. Limit switch
failed.
• Run to the other
direction
• Check/repair limit
switch wiring
• Check/replace limit
switch
54 Limit fault Wrong limit switch
active. Frequency too
low to detect direction.
Check limit switch
operation and wiring.
83 Slack wire Slack wire function
active.
86 Load not calibrated Load calibration has
not been done.
Perform load
calibration function.
020145en / Revision D / 2015-04-29
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