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Code
Alarm
241
ENCODER
ERROR
242
ENCODER
LOCKED
Q LINE
SENSOR KO
243
SENS MOT
TEMP KO
D LINE
SENSOR KO
244
PHASE KO
SOFTWARE
ERROR
Pump
EPS
Traction
(P)
(E)
(T)
Description
It occurs when ENCODER CONTROL is set ON and the
real frequency does not pursuit the commanded
frequency. This condition is several times due to either, a
mismatching between the Encoder resolution used in the
SW and the real encoder resolution, or a wrong
connection between the two encoder channels. In this
latest case swap the channels of the encoder (CNB#8
with CNB#7).
"If target speed is larger than 10Hz and the frequency
applied to the motor is larger than 1.5Hz, the controller
checks if the frequency read by the encoder increases
above a certain threshold. If this does not happen, this
alarm is raised.
Troubleshooting: check both the electric and the
mechanical encoder functionality. Check the wires
crimping.If the problem is still present after replacing the
encoder, the failure is in the controller."
This alarm occurs when the mean voltage on the
quadrature line of the stepper motor (connection CNA#8)
is not null: the voltage on every stepper motor line is a
sine wave with null mean voltage. Check the continuity of
the stepper motor connections. In particular the
resistance between CNA#8 and the minus battery (with
the stepper motor at rest) is expected being very low
(close to 30 ohms).
This alarm occurs when the output of the motor thermal
sensor is out of range. The cause could be either if the
motor temperature sensor is not correctly connected or if
the motor temperature sensor is damaged.
Troubleshooting :
Check the correct connection of the motor temperature
sensor. If the current sensor is correctly connected,
replace it. If the problem persists, it is due to the
controller. Replace it.
This alarm occurs when the mean voltage on the direct
line of the stepper motor (connection CNA#9) is not null:
the voltage on every stepper motor line is a sine wave
with null mean voltage. Check the continuity of the
stepper motor connections. In particular the resistance
between CNA#9 and the minus battery (with the stepper
motor at rest) is expected being very low (close to 30
ohms).
Cause :
One of the traction motor phases is open.
Troubleshooting :
A)
Check the cable U, V, W from the ac0 to the traction
motor.
If cables are OK, the problem is in the traction motor.
B)
Replace the traction motor.
Several are the causes that generate this alarm and are
related to the checks done by the SW : for instance CAN
bus off, bad EEPROM read/write,...
7-96
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