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Revision 8.6
SECTION 6 : OPERATION OF CONTROL PANEL
84
Table 6-5 : Hoist and Travel Faults
FAULT
AUTOMATIC
RESET IN
NEUTRAL
MEASURED
REFER
Rotor feedback
Yes
No rotor feedback from the Slip-ring Motor.
6.8.1.
Current unbal 1
Yes
Unbalanced current from current transformer
input 1
6.8.2 (a)
Current unbal 2
Yes
Unbalanced current from current transformer
input 2
6.8.2 (b)
Current unbal 3
Yes
Unbalanced current from current transformer
input 3
6.8.2 (c)
Loss of phase 1
Yes
Complete phase loss (0 Amps) detected by
current transformer input 1
6.8.3 (a)
Loss of phase 2
Yes
Complete phase loss (0 Amps) detected by
current transformer input 2
6.8.3 (b)
Loss of phase 3
Yes
Complete phase loss (0 Amps) detected by
current transformer input 3
6.8.3 (c)
Current feedback
Yes
All 3 motor currents missing
6.8.4
Stack temp
Yes (1)
Excessive stack temperature
6.8.5
Overload trip
Yes
Excessive motor current. This feature is not
yet implemented
6.8.6
Over current
Yes
Excessive motor current
6.8.7
H Loss or torque
Yes
Hook moving downwards during hoisting
operation
6.8.8
Lower overspeed
Yes
Excessive speed during counter torque
lowering
6.8.9
Motor stall
Yes
Motor not turning for a period > 10 sec
6.8.10
Input phases
Yes (1)
Mains supply: Wrong phase rotation
Phase missing
Supply voltage below 70% of
rated supply.
6.8.11
Plugging timeout
Yes
Plugging out time exceeded when returning
to neutral
6.8.12
J. Error
Yes
Simultaneous directions or no joystick
direction given when 2
nd
, 3
rd
or 4
th
notches
are requested
6.8.13
