EP Equipment CQD16, Service Manual

Page: 154 / 251

REV. 07/2016
ELECTRICAL SYSYTEM
8
140
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
c o n n e c t e d t o a p l u s
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.