YASKAWA V1000 Series Installation & Start-Up Manual

5.10 Detailed Troubleshooting
256 YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
■ Load Falls When Brake is Applied (Hoist-Type Applications)
■ Noise From Drive or Output Lines When the Drive is Powered On
■ Ground Fault Circuit Interrupter (GFCI) Trips During Run
■ Connected Machinery Vibrates When Motor Rotates
Excessive Motor Oscillation and Erratic Rotation
Cause Possible Solutions
The timing for the brake to close and
release is not set properly.
• Use frequency reference detection for closing and releasing the brake.
• At start: Release the brake after creating enough torque.
• At stop: Close the brake when the motor still produces torque.
• Make the following setting changes to hold the brake:
• Set the multi-function contact output terminal MA, MB, MC for
frequency detection.
• Multi-function contact output terminal will switch off when the output
frequency is greater than the frequency detection level set in L4-01. Set
L4-01 between 3.0 and 5.0 Hz.
• Slipping may occur when stopping because hysteresis is used in
Frequency Reference 2 (where the frequency agree setting in L4-02 is
2.0 Hz). To prevent this, change the setting to 0.5 Hz.
• Do not use the multi-function contact output setting “During Run”
(H2-01 = 0) for the brake signal.
Insufficient DC Injection Braking. Increase the amount of DC Injection Braking (b2-02).
Cause Possible Solutions
Relay switching in the drive generates
excessive noise.
• Lower the carrier frequency (C6-02).
• Install a noise filter on the input side of drive input power.
• Install a noise filter on the output side of the drive.
• Place the wiring inside a metal conduit to shield it from switching noise.
• Ground the drive and motor properly
• Separate the main circuit wiring and the control lines.
Cause Possible Solutions
Excessive leakage current is tripping
MCCB.
• Decrease the sensitivity of the GFCI, or use a different GFCI with a
higher threshold.
• Lower the carrier frequency (C6-02).
• Reduce the length of the cable used between the drive and the motor as
much as possible.
• Install a noise filter on the output side of the drive.
Cause Possible Solutions
Poor balance between motor phases.
Check the drive input power voltage to ensure that it provides stable
power.

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