YASKAWA V1000 Series Installation & Start-Up Manual

5.5 Fault Detection
208 YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
LED Operator Display Fault Name
FbH
Excessive PID Feedback
PID feedback input is greater than the level set b5-36 for longer than the time
set to b5-37. To enable fault detection, set b5-12 = “2” or “5”.
Cause Possible Solution
Parameters are not set appropriately. Check the settings of parameters b5-36 and b5-37.
Wiring for PID feedback is
incorrect.
Correct the wiring.
There is a problem with the
feedback sensor.
• Check the sensor on the control side.
• Replace the sensor if damaged.
LED Operator Display Fault Name
FbL
PID Feedback Loss
This fault occurs when PID Feedback Loss Detection is programmed to fault
(b5-12 = 2) and the PID Feedback < PID Feedback Loss Detection Level
(b5-13) for the PID Feedback Loss Detection Time (b5-14).
Cause Possible Solution
Parameters are not set appropriately. Check the settings of parameters b5-13 and b5-14.
Wiring for PID feedback is
incorrect.
Correct the wiring.
There is a problem with the
feedback sensor.
Check the sensor on the controller side.
If damaged, replace the sensor.
LED Operator Display Fault Name
GF
Ground Fault
• Current shorted to ground has exceeded 50% of the rated current on the output
side of the drive.
• Set L8-09 = “1” in order to enable ground fault detection on some models.
Cause Possible Solution
Motor insulation is damaged.
• Check the insulation resistance of the motor.
• Replace the motor.
A damaged motor cable is creating a
short circuit.
• Check the motor cable.
• Remove the short circuit and turn the power back on.
• Check the resistance between the cable and the ground terminal .
• Replace the cable.
The leakage current at the drive
output is too high.
• Reduce the carrier frequency.
• Reduce the amount of stray capacitance.
LED Operator Display Fault Name
LF
Output Phase Loss
• Phase loss on the output side of the drive.
• Phase Loss Detection is enabled when L8-07 is set to “1” or “2”.

YASKAWA V1000 Series Specifications

General

Model	V1000 Series
Series	V1000
Output Frequency	0.1 to 400 Hz
Overload Capacity	150% for 60 seconds
Type	AC Drive
Control Method	V/f Control
Input Voltage	200-240V, 380-480V
Output Voltage	0 to Input Voltage
Power Range	0.1 to 18.5 kW
Horsepower	0.2 to 25 HP
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit, Ground Fault
Communication Interfaces	Modbus RTU
Enclosure	IP20
Ambient Temperature	-10 to +50°C
Storage Temperature	-20 to +60°C
Humidity	5 to 95% RH (non-condensing)
Cooling Method	Fan Cooled