Fault Detection; Fault Detection; Fault Displays, Causes, And Possible Solutions - YASKAWA CIMR-JA Series Installation & Start-Up Manual

5.4 Fault Detection

5.4

Fault Detection

u

Fault Displays, Causes, and Possible Solutions

Table 5.6 Detailed Fault Displays, Causes, and Possible Solutions
LED Operator Display
Cause
Faulty communications wiring, or a
short circuit exists.
A communications data error
occurred due to noise.
LED Operator Display
Cause
Drive hardware is damaged.
LED Operator Display
CPF02
Cause
Control circuit is damaged.
Control circuit terminals have
shorted out (+V, AC).
Control terminal input current has
exceeded allowable levels.
LED Operator Display
CPF06
Cause
Control circuit is damaged.
The power supply was switched off
when parameters were written (e.g.,
using an option unit).
LED Operator Display
CPF08
126 YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
MEMOBUS/Modbus Communication Error
CE
Control data was not received for the CE detection time set to H5-09.
• Check for faulty wiring.
• Correct the wiring.
• Check for loose wiring and short circuits. Repair as needed.
• 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 a noise filter to the input side of the drive input power.
Current Offset Fault
CoF
There is a problem with the current detection circuit.
Replace the drive.
A/D Conversion Error
An A/D conversion error occurred.
Cycle power to the drive. If the problem continues, replace the drive.
• Check for wiring errors along the control circuit terminals.
• Correct the wiring.
Check the resistance of the speed potentiometer and related wiring.
• Check the input current.
• Reduce the current input to control circuit terminal (+V) to 20 mA.
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.
Reinitialize the drive (A1-03).
EEPROM Communication Fault
EEPROM communications are not functioning properly.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name