Fault Detection; Fault Detection; Fault Displays, Causes And Possible Solutions - Omron J1000 User Manual

6.4

Fault Detection

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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
While the drive automatically adjusted the
current offset, the calculated value exceeded
the allowable setting range.
LED Operator Display
CPF00 or CPF01
or
Cause
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
Cause
Control circuit is damaged.
LED Operator Display
or CPF20 or CPF21
Cause
Hardware is damaged.
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
Table 6.7 Detailed Fault Displays, Causes and Possible Solutions
MEMOBUS/Modbus Communication Error
CE
No data was received for longer than 2 seconds.
• 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 OYMC-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.
CPF11 – RAM Fault
CPF12 – Problem with the ROM (FLASH memory)
CPF14 – CPU error (CPU operates incorrectly due to noise, etc.)
CPF17 – A timing error occurred during an internal process
CPF18 – CPU error (CPU operates incorrectly due to noise, etc.)
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.
Cycle power to the drive. If the problem persists, replace the drive.
One of the following faults occurred: RAM fault, FLASH memory error, watchdog circuit exception,
clock error
• RAM fault.
• FLASH memory error (ROM error).
• Watchdog circuit exception (self-diagnostic error).
• Clock error.
Replace the drive.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution

6.4 Fault Detection

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