YASKAWA CIMR-JA Series User Manual

Cause Possible Solutions
Minor Fault
Output
(H2-01 = 10)
Surge voltage present in the
drive input power.
• Install a DC reactor or an AC reactor.
• Voltage surge can result from a thyristor
convertor and a phase
advancing capacitor operating on the same drive input power
system.
YES
• The motor has short-
circuited.
• Ground current has
over-charged the main
circuit capacitors via the
drive input power.
• Check the motor power cable, relay terminals and motor
terminal box for short circuits.
• Correct grounding shorts and turn the power back on.
YES
Noise interference causes the
drive to operate incorrectly.
• Review possible solutions for handling noise interference.
• Review section on handling noise interference and check
control circuit lines, main circuit lines and ground wiring.
• If the magnetic contactor is identified as a source of noise,
install a surge protector to the MC coil.
YES
Set number of fault restarts (L5-01) to a value other than 0. YES
LED Operator Display Minor Fault Name
PASS MEMOBUS/Modbus Communication Test Mode Complete
Cause Possible Solutions
Minor Fault
Output
(H2-01 = 10)
MEMOBUS/Modbus test has
finished normally.
This verifies that the test was successful. No output
LED Operator Display Minor Fault Name
SE MEMOBUS/Modbus Communication Test Mode Error
Cause Possible Solutions
Minor Fault
Output
(H2-01 = 10)
A digital input programmed to
67H (MEMOBUS/Modbus
test) was closed while the drive
was running.
Stop the drive and run the test again. No output
LED Operator Display Minor Fault Name
Uv
Undervoltage
One of the following conditions was true when the drive was stopped and a run
command was entered:
• DC bus voltage dropped below the level specified in L2-05.
• Contactor to suppress inrush current in the drive was open.
• Low voltage in the control drive input power. This alarm outputs only if L2-01 is
not 0 and DC bus voltage is under L2-05.
Cause Possible Solutions
Minor Fault
Output
(H2-01 = 10)
Phase loss in the drive input
power.
Check for wiring errors in the main circuit drive input power.
Correct the wiring.
YES
Loose wiring in the drive input
power terminals.
• Ensure the terminals have been properly tightened.
• Apply the tightening torque specified in this manual to fasten
the terminals. Refer to Wire Gauges and Tightening Torque
on page 50
YES
5.5 Alarm Detection
YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
137
5
Troubleshooting
2/6/2008-14:44

YASKAWA CIMR-JA Series Specifications

General

Brand	YASKAWA
Model	CIMR-JA Series
Category	Controller
Language	English