YASKAWA V1000 Series Installation & Start-Up Manual page 203

LED Operator Display
CE
Cause
Communications wiring is faulty,
disconnected or a short circuit
exists.
A communications data error
occurred due to noise.
LED Operator Display
Cause
Motor parameters are not set
properly.
Torque limit is too low.
Load inertia is too big.
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
CPF03
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
MEMOBUS/Modbus Communication Error
Control data was not received for two 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.
• Take steps to counteract noise in the control circuit wiring, main circuit lines
and ground wiring.
• Ensure that other equipment such as switches or relays do not cause noise and
use surge suppressors if required.
• Use cables recommended by Yaskawa, or another type of shielded line. The
shield should be grounded on the controller side or on the drive input power
side.
• Separate all wiring for communications devices from drive input power lines.
Install a 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.
Check the motor parameter settings and repeat Auto-Tuning.
Set the torque limit to the most appropriate setting (L7-01 through L7-04).
• Adjust the deceleration time (C1-02, -04, -06, -08).
• Set the frequency to the minimum value and interrupt the run command when
the drive finishes decelerating.
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.
PWM Data Error
There is a problem with the PWM data.
5.5 Fault Detection
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Refer to Using Fault Trace Monitors on page
Fault Name
5
245.
203