YASKAWA AC Drive-A1000 User Manual

Digital Operator Display Minor Fault Name
FbL
PID Feedback Loss
The PID feedback input is lower than the level set in b5-13 for longer than the time set in b5-14, and b5-12
is set to 1 or 4.
Cause Possible Solutions
Parameters settings for b5-13 and b5-14 are
incorrect.
Check parameters b5-13 and b5-14.
PID feedback wiring is faulty. Correct the wiring.
Feedback sensor has malfunctioned. Check the sensor and replace it if damaged.
Feedback input circuit is damaged.
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Digital Operator Display Minor Fault Name
Hbb
Safe Disable Signal Input
<1>
Both Safe Disable Input channels are open.
<1>
Cause Possible Solutions
Both Safe Disable Inputs H1 and H2 are
open.
<1>
• Check signal status at the input terminals H1 and H2.
• Check the Sink/Source Selection for the digital inputs.
•
If the Safe Disable function is not utilized, check if the terminals H1-HC, and H2-HC are linked.
<1>
Internally, both Safe Disable channels are
broken.
<1>
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Digital Operator Display Minor Fault Name
HbbF
Safe Disable Signal Input
<1>
One Safe Disable channel is open while the other one is closed.
<1>
Cause Possible Solutions
The signals to the Safe Disable inputs are
wrong or the wiring is incorrect.
<1>
Check signal status at the input terminals H1 and H2. If the Safe Disable function is not utilized, the terminals
H1-HC, and H2-HC must be linked.
<1>
One of the Safe Disable channels is
faulty.
<1>
Replace either the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Digital Operator Display Minor Fault Name
HCA
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
Cause Possible Solutions
Load is too heavy.
Either reduce the load for applications with repetitive operation (repetitive stops and starts, etc.), or replace
the drive.
Acceleration and deceleration times are too
short.
• Calculate the torque required during acceleration and for the inertia moment.
• If the torque level is not right for the load, take the following steps:
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Increase the capacity of the drive.
A special-purpose motor is being used, or
the drive is attempting to run a motor
greater than the maximum allowable
capacity.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is within the allowable capacity range.
The current level increased due to Speed
Search after a momentary power loss or
while attempting to perform a fault restart.
The alarm will appear only briefly. There is no need to take action to prevent the alarm from occurring in
such instances.
Digital Operator Display Minor Fault Name
LT-1
Cooling Fan Maintenance Time
The cooling fan has reached its expected maintenance period and may need to be replaced.
Note:
An alarm output (H2-oo = 10) will only be triggered if H2-oo = 2F.
Cause Possible Solutions
The cooling fan has reached 90% of its
expected performance life.
Replace the cooling fan and reset the Maintenance Monitor by setting o4-03 to 0.
6.5 Alarm Detection
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
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Troubleshooting

YASKAWA AC Drive-A1000 Specifications

General

Brand	YASKAWA
Model	AC Drive-A1000
Category	Controller
Language	English