YASKAWA V1000 Series Installation & Start-Up Manual page 229

Cause
Feedback sensor has malfunctioned.
Feedback input circuit is damaged.
LED Operator Display
Cause
Internally, both Hardwire Baseblock
channels are broken.
There is no signal at terminal H1.
LED Operator Display
HbbF
Cause
One of the baseblock channels is
faulty.
LED Operator Display
HCA
Cause
Load is too heavy.
Acceleration and deceleration times
are too short.
A special-purpose motor is being
used, or the drive is attempting to run
a motor greater than the maximum
allowable capacity.
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Check the sensor and replace it if damaged.
Replace the drive.
Hardwire Baseblock Signal Input
Hbb
Hardwire Baseblock input signal open.
Replace the drive.
Check the wiring of terminal H1.
Check if the PLC signal is set correctly.
Hardwire Baseblock Signal Input
One of the baseblock channels is damaged.
Replace the drive.
Current Alarm
Drive current has exceeded the 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.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is
within the allowable capacity range.
5.6 Alarm Detection
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault
Output
(H2- = 10)
YES
YES
Minor Fault
Output
(H2- = 10)
YES
YES
5
Minor Fault
Output
(H2- = 10)
YES
Minor Fault
Output
(H2- = 10)
YES
YES
YES
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