YASKAWA V1000 Quick Start Manual page 132

5.2 Fault Detection
A communications data error
occurred due to noise.
Cause
Due to residual induction current in
the motor when the drive attempted
to start the motor, the drive
attempted to adjust the current
offset value beyond the allowable
range.
CPF02
CPF03
CPF06
Cause
Control circuit is damaged.
The power supply was switched off
when parameters were written (e.g.,
using a communications option
card).
CPF07
CPF08
CPF11
CPF12
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• Check the various options available to minimize the effects of noise.
• Counteract noise in control circuit, main circuit, and ground wiring.
• Use Yaskawa-recommended cables, or another type of shielded line. Ground
the shield on the controller side or on the drive input power side.
• Ensure that other equipment such as switches or relays do not cause noise and
use surge suppressors if required.
• Separate all wiring for communications devices from drive input power lines.
Install an EMC noise filter to the input side of the drive input power.
Control Fault
CF
A torque limit was reached continuously for three seconds or longer during a ramp
to stop while in Open Loop Vector Control.
Current Offset Fault
The current sensor is damaged or there was residual induction current in the motor
CoF
(e.g., during sudden deceleration or when coasting) when the drive attempted to
start the motor.
• Create a motor restart sequence that allows enough time for the residual
induction voltage to dissipate.
• Enable Speed Search at start (b3-01 = 1). Use the multi-function terminals to
execute External Speed Search 1 and 2 (H1-oo = 61 or 62).
Note: When using a PM motor, both External Speed Search 1 and 2 perform the
same operation.
A/D Conversion Error
An A/D conversion error occurred.
PWM Data Error
There is a problem with the PWM data.
EEPROM Data Error
There is an error in the data saved to EEPROM.
Cycle power to the drive. If the problem continues, replace the drive.
• Cycle power to the drive and check operation again.
• Initialize the drive using A1-03.
• If the problem persists after initializing the drive, replace the drive.
Terminal Board Communications Error
A communication error occurred at the terminal board.
EEPROM Serial Communication Fault
EEPROM communications are not functioning properly.
RAM Fault
FLASH Memory Fault
Problem with the ROM (FLASH memory).
YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide
Possible Solution
Possible Solution