114
YASKAWA
TOEPC71061752B GA500 Drive Installation & Primary Operation
Code
Name
Causes
Possible Solutions
EP24v
External Power 24V
Supply
The voltage of the main circuit
power supply decreased, and the
24 V power supply is supplying
power to the drive.
•
Examine the main circuit power supply.
•
Turn ON the main circuit power supply
to run the drive.
FbH
Excessive PID
Feedback
The
FbH
detection level is set
incorrectly.
Adjust
b5-36 [PID High Feedback
Detection Lvl]
and
b5-37 [PID High
Feedback Detection Time]
.
There is a problem with the PID
feedback wiring.
Correct errors with the PID control wiring.
The feedback sensor is not
operating correctly.
Examine the sensors on the control device
side.
A fault occurred in the feedback
input circuit of the drive.
Replace the board or the drive. For
information about replacing the control
board, contact Yaskawa or your nearest sales
representative.
FbL
PID Feedback Loss
The
FbL
detection level is set
incorrectly.
Adjust
b5-13 [PID Feedback Loss Detection
Lvl]
and
b5-14 [PID Feedback Loss
Detection Time]
.
There is a problem with the PID
feedback wiring.
Correct errors with the PID control wiring.
The feedback sensor is not
operating correctly.
Examine the sensors on the control device
side.
A fault occurred in the feedback
input circuit of the drive.
Replace the board or the drive. For
information about replacing the control
board, contact Yaskawa or your nearest sales
representative.
HCA
High Current Alarm
The load is too heavy.
•
Decrease the load for applications with
repetitive starts and stops.
•
Replace the drive with a larger capacity
model.
The acceleration time is too short.
•
Calculate the torque necessary during
acceleration related to the load inertia
and the specified acceleration time.
•
Increase the values set in
C1-01, C1-03,
C1-05, or C1-07 [Acceleration Times]
until you get the necessary torque.
•
Increase the values set in
C2-01 to C2-04
[S-Curve Characteristics]
until you get
the necessary torque.
•
Replace the drive with a larger capacity
model.
The drive is trying to operate a
specialized motor or a motor that
is larger than the maximum
applicable motor output of the
drive.
•
Examine the motor nameplate, the motor,
and the drive to make sure that the drive
rated current is larger than the motor
rated current.
•
Replace the drive with a larger capacity
model.
The current level temporarily
increased because of speed search
after a momentary power loss or
while trying to Auto Restart.
If speed search or Auto Restart cause an
increase in current, the drive can
temporarily show this alarm. The time that
the drive shows the alarm is short. No more
steps are necessary to clear the alarm.