YASKAWA CIMR-VU BA0001 Technical Manual page 289

Digital Operator Display
Pulse input (RP) is disconnected.
Pulse input (RP) wiring is wrong.
Motor brake is engaged.
Digital Operator Display
Cause
A motor switch command was entered during
run.
Digital Operator Display
Cause
A digital input programmed to 67H
(MEMOBUS/Modbus test) was closed while
the drive was running.
Digital Operator Display
Cause
IGBTs have reached 90% of their expected
performance life.
Digital Operator Display
Cause
Inappropriate parameter settings.
Load has dropped or decreased significantly. Check for broken parts in the transmission system.
Digital Operator Display
Cause
Inappropriate parameter settings.
The load has dropped or decreased
significantly.
Digital Operator Display
Cause
Undertorque was detected and matched the
condition of mechanical loss detection
operation selection (L6-08).
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Reconnect the pulse input (RP).
Correct the wiring.
Ensure the brake releases properly
Motor Switch during Run
rUn
A command to switch motors was entered during run.
Change the operation pattern so that the motor switch command is entered while the drive
is stopped.
SE MEMOBUS/Modbus Communication Test Mode Error
Stop the drive and run the test again.
IGBT Maintenance Time (90%)
TrPC
IGBTs have reached 90% of their expected performance life.
Replace the drive.
Undertorque Detection 1
UL3
Drive output current (or torque in OLV) less than L6-02 for longer than L6-03 time.
Check parameters L6-02 and L6-03.
Undertorque Detection 2
UL4
Drive output current (or torque in OLV) less than L6-05 for longer than L6-06 time.
Check parameters L6-05 and L6-06.
Check for broken parts in the transmission system.
Mechanical Weakening Detection 2
UL5
The operation conditions matched the conditions set to L6-08.
Check the load side for any problems.
Minor Fault Name
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
Minor Fault Name
Possible Solution
6.5 Alarm Detection
YES
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
No output
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
YES
Minor Fault
(H2-oo = 10)
YES
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