Blue Giant BGL-33, Owner'S Manual

Page: 33 / 142

Table 4-3 STEERING CONTROLLER - Continued
Error Message Possible Cause Fault Elimination
Code Error Text
221 MICRO SLAVE
#4
It occurs in one or the following
conditions:
(Open loop application only) If the
slave uC detects the stator
voltage phasor rotates in the
opposite direction respect to
the sign of the stepper motor
speed.
(Closed loop application only) If
the slave uC detects the stator
voltage phasor rotates in the
opposite direction respect to
the commanded position.
It is necessary to replace the controller.
222 FB POT
LOCKED
In application with a feedback
potentiometer, this alarm
occurs if the feedback potenti-
ometer (CPOT on CNB#6)
does not change (or changes
in the opposite direction) its
value even if commanded to
change.
In application with toggle switches
with ENCODER CONTROL to
off, this alarm occurs if the
feedback encoder counting
does not change its value even
if commanded to change.
In application with the feedback potentiome-
ter, verify potentiometer is not mechanically
loosened. Check there is not a mechanical
block of the steered wheel. Be sure the
wiper has not reached its own electrical
limit because of too much angle of the
steered wheel. Besides, this alarm may
occur at the installation when the motor
rotates in the wrong direction turning away
from the desired direction.
223 JERKING FB
POT
This alarm occurs if the feedback
potentiometer (CPOT on
CNB#6) changes with a jerk
larger than 0.3V in 16 msec.
This alarm is used to catch a
discontinuity in the voltages of
the feedback potentiometer
Change the feedback potentiometer.
225 CURRENT GAIN This alarm occurs when the
parameter to compensate for
the gain of the current amplifi-
ers (ADJUSTMENT #03 and
ADJUSTMENT #04) have the
default values.
It is necessary to send the controller to Zapi to
perform, the maximum current regulation.
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