YASKAWA V1000 Technical Manual page 269

Wiring is incorrect.
Multi-function contact inputs are set
incorrectly.
LED Operator Display
FbH
Cause
Parameters settings for b5-36 and b5-37
are incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
LED Operator Display
FbL
Cause
Parameters settings for b5-13 and b5-14
are incorrect.
PID feedback wiring is faulty.
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
LED Operator Display
Hbb
Cause
There is no signal at terminal H1.
Internally, the Safe Disable channel is
broken.
LED Operator Display
HbbF
Cause
One of the Safe Disable channels is faulty. Replace the drive.
LED Operator Display
HCA
Cause
Load is too heavy.
Acceleration and deceleration times are
too short.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
• Ensure the signal lines have been connected properly to the terminals assigned for
external fault detection (H1-oo = 20 to 2F).
• Reconnect the signal line.
• Check if the unused terminals have been set for H1-oo = 20 to 2F (External Fault).
• Change the terminal settings.
Excessive PID Feedback
The PID feedback input is higher than the level set in b5-36 for longer than the time set in b5-37, and
b5-12 is set to 1 or 4.
Check parameters b5-36 and b5-37.
Correct the wiring.
Check the sensor and replace it if damaged.
Replace the drive.
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.
Check parameters b5-13 and b5-14.
Correct the wiring.
Check the sensor and replace it if damaged.
Replace the drive.
Safe Disable Signal Input
The Safe Disable Input channel is open.
Check if external safety circuit tripped and disabled the drive. If the Safe Disable function
is not utilized, check if the terminals HC, H1, and H2 are linked.
Replace the drive.
Safe Disable Signal Input
One of the Safe Disable input channels is open.
Current Alarm
Drive current exceeded overcurrent warning level (150% of the rated current).
• Measure the current flowing through the motor.
• Reduce the load or increase the capacity of the drive.
• 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.
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
6.5 Alarm Detection
YES
YES
Minor Fault
Output
(H2-oo =
10)
YES
YES
YES
YES
Minor Fault
Output
(H2-oo =
10)
YES
YES
YES
YES
Minor Fault
Output
(H2-oo =
10)
YES
YES
Minor Fault
Output
(H2-oo =
10)
YES
Minor Fault
Output
(H2-oo =
10)
YES
YES
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