YASKAWA iQpump1000 User Manual page 272

5.3 Alarm Detection
HOA Keypad Display
Termination resistor setting is incorrect.
HOA Keypad Display
CE
Cause
A data error occurred due to noise.
Communication protocol is incompatible.
The CE detection time (H5-09) is set
shorter than the time required for a
communication cycle to take place.
Incompatible PLC software settings or
there is a hardware problem.
Communications cable is disconnected or
damaged.
HOA Keypad Display
CE – Comm Loss Run at H5-14
Cause
A data error occurred due to noise.
Communication protocol is incompatible.
The CE detection time (H5-09) is set
shorter than the time required for a
communication cycle to take place.
Incompatible PLC software settings or
there is a hardware problem.
Communications cable is disconnected or
damaged.
HOA Keypad Display
Current Limit
Foldback
Cause
Drive output speed is being limited due to
the output current limit.
272
Install a termination resistor at both ends of a communication line. Set the internal termination resistor switch
correctly on slave drives. Place DIP switch S2 to the ON position.
MEMOBUS/Modbus Communication Error
Control data was not received correctly for two seconds.
• Check options available to minimize the effects of noise.
• Take steps to counteract noise in the control circuit wiring, main circuit lines, and ground wiring.
• Reduce noise on the controller side.
• Use surge absorbers for the magnetic contactors or other components that may be causing the disturbance.
• Use only recommended shielded line. Ground the shield on the controller side or on the drive input power
side.
• Separate all wiring for communication devices from drive input power lines. Install an EMC noise filter
to the drive input power supply.
• Check the H5 parameter settings and the protocol setting in the controller.
• Ensure settings are compatible.
• Check the PLC.
• Change the software settings in the PLC.
• Set a longer CE detection time using parameter H5-09.
• Check the PLC.
• Remove the cause of the error on the controller side.
• Check the connector to make sure the cable has a signal.
• Replace the communications cable.
MEMOBUS/Modbus Communicator Error.
Drive runs at H5-14.
• Check options available to minimize the effects of noise.
• Take steps to counteract noise in the control circuit wiring, main circuit lines, and ground wiring.
• Reduce noise on the controller side.
• Use surge absorbers for the magnetic contactors or other components that may be causing the disturbance.
• Use only recommended shielded line. Ground the shield on the controller side or on the drive input power
side.
• Separate all wiring for communication devices from drive input power lines. Install an EMC noise filter
to the drive input power supply.
• Check the H5 parameter settings and the protocol setting in the controller.
• Ensure settings are compatible.
• Check the PLC.
• Change the software setting in the PLC.
• Set a longer CE detection time using parameter H5-09.
• Check the PLC.
• Remove the cause of the error on the controller side.
• Check the connector to make sure the cable has a signal.
• Replace the communications cable.
Current Limit Foldback
• Reduce the load.
• Verify setting of Q3-02.
• Change to a larger drive size.
Minor Fault Name
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual