EP Equipment 508000003143, Operation Manual

Page: 84 / 91

77
Error Message
Possible cause Fault elimination
Error
Error text
73
POWER
FAILURE #1
This alarm occurs when the current in the
phase W of the motor is zero and the motor
is commanded for moving.
Check the power fuse is OK. Check
the battery positive arrives to the
controller. Check the continuity of the
wire in the phase W of the motor.
Otherwise it is necessary to replace
the controller.
83
BAD
ENCODER
SIGN
It occurs in applications with toggle switches
when the applied frequency (FREQUENCY)
and the motor speed (ENC SPEED)
have opposite sign.
Swap in between the two encoder
channels (CNB#7 with CNB#8).
84
STEER
SENSOR KO
This alarm occurs if the command
potentiometer (CPOC1 on CNA#9 or
CPOC2 on CNA#8) changes with a jerk
larger than MAX SP SLOPE (see 12.4.6.3).
This alarm is used to catch a discontinuity in
the voltages of the command potentiometer.
Change the twin pot.
85
STEER
HAZARD
This is just a warning to inform that the
steering controller is limiting the angle in the
steering direction. No speed reduction
occurs on the traction.
——
218
CLOCK PAL
NOT OK
The main uC sends an analog signal
towards the slave uC to reset the slave uC
on demand. When the slave uC detects this
analog signal external to a window from 2.2
to 2.8 and not in the range to generate the
reset on demand, the slave uC raises this
alarm.
It is necessary to replace the
controller.
99
INPUT
ERROR #1
It occurs when the voltage on CNA#4 (NK1:
Lower Potential Terminal of the Safety
Contacts (see 7.6) is higher than 12 V
before to turn the safety contacts closed.
When the safety contacts are open,
the voltage on CNA#4 is expected to
be close to 0 Vdc and this is
independent from whether the safety
contacts are connected to a plus
battery or to a minus battery . In the
first case (safety contacts connected
to a plus battery), when the safety
contacts are open, CNA#4 is
connected to a minus battery through
a load. Only a harness mistake may
connect NK1 to a higher than 12 V
voltage.