Skyjack SJ12 E Service Manual page 140

Section 5 – Procedures
Code Description
231-CTRL ERR PUMP I NO ZERO
232-CTRL ERR CONT. DRV. EV
POWERMOS
233-CTRL ERR
SHORTED
234-CTRL ERR DRV. SHOR. EV XX
CTRAP
235-CTRL ERR
THRESHOLD
236-CTRL ERR CURRENT GAIN
238-CTRL ERR HW FAULT EV.
CONTROLLER
239-CTRL ERR
MISM.
240-CTRL ERR EVP DRIVER OPEN
241914ACA
140
Cause
In standby condition (pump motor not
driven), the feedback coming from the
current sensor in the pump chopper
gives a value out of a permitted range.
One or more on/off valve drivers are
shorted.
The DC-link voltage drops to zero when
a high- side or low-side MOSFET is
turned on.
One or more on/off valve drivers are
shorted. For the meaning of code "XX",
refer to the dedicated sheet.
This alarm occurs when a mismatch is
detected between the set point for the
overcurrent detection circuit and the
feedback of the actual threshold value.
The current gain parameters are at the
default values, which means that the
maximum current adjustment procedure
has not been carried out yet.
At start-up, the hardware circuit
dedicated to enable and disable the
EV drivers is found to be faulty. The
hexadecimal value "XX" facilitates Zapi
technicians debugging the problem.
The software is not compatible with the
hardware. Each controller produced
is "signed" at the end of line test with a
specific code mark saved in EEPROM
according to the customized part
number.
According with this "sign", only the
customized firmware can be uploaded.
The EVP driver (output NEVP , pin A26) is
not able to drive the EVP coil. The device
itself or its driving circuit is damaged.
Display Module
Troubleshooting
This type of fault is not related to
external components; replace the
controller.
Check if there is a short circuit or a
low impedance path between the
negative terminals of the involved
coils and -B.
Check that motor phases are
correctly connected.
Check that there is no dispersion to
ground for every motor phases.
In case the problem is not solved,
replace the controller.
Check if there is a short circuit or a
low impedance path between the
negative terminals of the involved
coils and -B.
If the problem is not solved, replace
the logic board.
This type of fault is not related to
external components; replace the
controller.
Ask for assistance to a Zapi
technician in order to do the
adjustment procedure of the current
gain parameters.
This fault is not related to external
components.
Upload the correct firmware.
Ask for assistance to a Zapi
technician in order to verify that the
firmware is correct.
Check parameters EVP COIL RESIST.
and EVP2 COIL RESIST. to match the
resistance values of the coils.
If the problem persists, replace the
controller.
SJ12 E, SJ16 E, SJ20 E