Skyjack SJ 3220, Service Manual

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164
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732 223198ABA
Section 5 – Procedures Skycoded Module
Help Messages and Fault Codes (Continued)
Code Message Description
Flash
Code
121
FAULT: BAD
INTERNAL
TEMPERATURE
SENSOR!
The heatsink temperature is out of range. If the fault remains, the power
controller may have to be replaced.
4/1
122
FAULT: BATTERY
VOLTAGE TOO HIGH! The battery supply is too high – check that the correct battery and charger are
installed.
4/4
123
FAULT: BATTERY
VOLTAGE TOO LOW!
The battery supply is too low – the battery must be re-charged. 4/4
124 FAULT: CAN BUS!
CANbus messages expected from one or more modules are not being received,
or messages intended to one or more module cannot be transmitted.
Check for open- and short- circuit problems with the CANbus wiring. Make
sure that the CANbus is wired correctly pin-to-pin. Make sure that the machine
chassis is not incorrectly shorted to the motor wiring (for example, due to
insulator breakdown in the motor).
6/6
125
FAULT: CHECK
ELEVATION SWITCH
During calibration, the height at which the elevation switch opens (while lifting)
and closes (while lowering), is recorded; during normal operation the elevation
switch and platform height are continuously compared.
Check for open- or short-circuit wiring; check for loose elevation switch cam;
re-calibrate height if necessary.
6/3
126
FAULT: CHECK
HEIGHT SENSORS
The two height transducer outputs should read the same height at all times; this
message indicates that they are reading different heights.
Check for loose wiring and check transducer outputs, or the transducer may
need to be replaced.
6/1
127
FAULT: CHECK
HEIGHT1 SENSOR
6/1
128
FAULT: CHECK
HEIGHT2 SENSOR A height sensor is giving an out-of-range voltage (below 0.5V or above 4.5V).
Check for open- or short-circuit wiring; replace height sensor if necessary.
6/1
129
FAULT: CHECK
PRESSURE SENSOR
The pressure sensor is giving an out-of-range voltage (below 0.5V or above
4.5V).Check for open- or short- circuit wiring. Replace pressure sensor and
re-calibrate load if necessary.
6/2
130
FAULT: CUSTOMER
The Control Module CM1 must be configured to the customer requirements –
this should have been done before the controller was shipped from factory.
1/1
131
FAULT: ENERGIZED
LINE CONTACTOR -
CHECK P5 WIRING!
There is a voltage on the line contactor coil output when it should be off.
Check wiring to line contactor coil.
3/4
132
FAULT: ENERGIZED
VALVE - CHECK P5
WIRING!
There is a line voltage on a valve output from coils wired to P5. Check for a short
circuit or illegal wiring.
3/2
133
FAULT: MOTOR
OVERLOAD!
The Control Module CM1 power protection circuits have activated to protect
from extreme overload.
Check for short-circuit power wiring. Check for a seized motor.
3/5
134
FAULT: VALVE
FEEDBACK HIGH
- CHECK VALVE
WIRING!
There is a voltage on one or more valve outputs, when all outputs should be off.
Check wiring to each valve coil.
3/2
135
FUNCTIONS LOCKED
- ARMGUARD
During descent, the Control Module CM1 can stop movement for a configurable
time (see ADJUSTMENTS/ LIFT/ ARMGUARD), to allow a safety check that
no-one is close to the machine. The operator must release and then re-select
DOWN to continue lowering (after the delay timeout).
2/2