YASKAWA V1000 Series Installation & Start-Up Manual page 226

5.6 Alarm Detection
Cause
Communication protocol is
incompatible.
The CE detection time (H5-09) is set
shorter than the time required for a
communication cycle to take place.
The PLC software settings are not
compatible or there is a hardware
problem.
Communications cable is
disconnected or damaged.
A data error occurred due to noise.
LED Operator Display
Cause
Load is too heavy
Acceleration and deceleration times
are set too short.
The load is locked up.
Parameter settings are inappropriate. Check the settings of parameters F1-10 and F1-11.
The motor brake engaged.
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YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
• 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 for a signal flowing through the
cable.
• Replace the communications cable.
• Check the various options available to minimize the
effects of noise.
• Counteract noise in the control circuit wiring, main circuit
lines and ground wiring.
• Reduce noise on the controller side.
• If the disturbance is caused by switching magnetic
contactors or other equipment, use surge absorbers on
these devices.
• 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.
Speed Deviation (for Simple V/f with PG)
dEv
According to the pulse input (RP), the speed deviation is greater than the
setting in F1-10 for a time longer than the setting in F1-11.
Reduce the load.
Increase the acceleration and deceleration times (C1-01
through C1-08).
Check the machine.
Ensure the brake releases properly.
Possible Solutions
Minor Fault Name
Possible Solutions
Minor Fault
Output
(H2- = 10)
YES
YES
YES
YES
YES
Minor Fault
Output
(H2- = 10)
YES
YES
YES
YES
YES