R&M ControlMaster NXT - Page 54

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.
R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
33/34
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.