YASKAWA FSDrive-MV1000 Instructions Manual page 131

Digital Operator Display
CALL
Cause
Communications wiring is faulty, there is a
short circuit, or something is not connected
properly.
Programming error on the master side.
Communications circuitry is damaged.
Digital Operator 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.
Digital Operator Display
CrST
Cause
A fault reset command was entered while the
Run command was still present.
Digital Operator Display
dEv
Cause
Load is too heavy.
Acceleration and deceleration times are set
too short.
The load is locked up.
Parameter settings are inappropriate.
Brake is holding the PG.
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
Serial Communication Transmission Error
Communication has not yet been established.
Possible Solutions
Check for wiring errors.
⇒Correct the wiring.
⇒Check for disconnected cables and short circuits. Repair as needed.
⇒Check communications at start-up and correct programming errors.
Perform a self-diagnostics check.
⇒If "CALL" is detected again, replace the control board. For
instructions on replacing it, contact Yaskawa or your nearest sales
representative.
MEMOBUS/Modbus Communication Error
Control data was not received correctly for two seconds.
Possible Solutions
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 comm. devices from drive input power lines.
Install an EMC noise filter to the drive input power supply.
Check the H5 parameter settings as well as 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 (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.
Cannot Reset
A fault reset command was entered while the Run command was still present.
Possible Solutions
Check whether a Run command has been input from the external
terminals or communication option card during fault reset.
⇒Turn off the Run command.
Speed Deviation (for Control Mode with PG)
The deviation between the speed reference and speed feedback is greater than the setting in
F1-10 for longer than the time in F1-11.
Possible Solutions
⇒Reduce the load.
⇒Increase accel and decel times (C1-01 to C1-08).
⇒Check the machine.
⇒Check the settings of parameters F1-10 and F1-11.
⇒Ensure the brake releases properly.
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
5.5 Alarm Detection
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
No
Minor Fault
Output
H2- =10
Yes
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