YASKAWA CIMR-VU BA0001 Technical Manual page 286

6.5 Alarm Detection
Digital Operator Display
Load is too heavy.
Acceleration and deceleration times are too
short.
A special-purpose motor is being used, or the
drive is attempting to run a motor greater than
the maximum allowable capacity.
Digital Operator Display
Cause
The cooling fan has reached 90% of its
expected performance life.
Digital Operator Display
Cause
The main circuit and control circuit capacitors
have reached 90% of their expected
performance life.
Digital Operator Display
Cause
The DC bus soft charge relay has reached 90%
of their expected performance life.
Digital Operator Display
Cause
IGBTs have reached 50% of their expected
performance life.
Digital Operator Display
Cause
286
• Measure the current flowing through the motor.
• Reduce the load or increase the capacity of the drive.
• Calculate the torque required during acceleration and for the inertia moment.
• If the torque level is not right for the load, take the following steps:
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Increase the capacity of the drive.
• Check the motor capacity.
• Use a motor appropriate for the drive. Ensure the motor is within the allowable capacity
range.
Cooling Fan Maintenance Time
LT-1
The cooling fan has reached its expected maintenance period and may need to be replaced.
Note: An alarm output (H2-oo = 10) will only be triggered if H2-oo = 2F.
Replace the cooling fan and reset the Maintenance Monitor by setting o4-03 to 0.
Capacitor Maintenance Time
LT-2
The main circuit and control circuit capacitors are nearing the end of their expected performance life.
Note: An alarm output (H2-oo = 10) will only be triggered if H2-oo = 2F.
Replace either the control board or the entire drive. For instructions on replacing the control
board, contact Yaskawa or your nearest sales representative.
Soft Charge Bypass Relay Maintenance Time
LT-3
The DC bus soft charge relay is nearing the end of its expected performance life.
Note: An alarm output (H2-oo = 10) will only be triggered if H2-oo = 2F.
Replace either the control board or the entire drive. For instructions on replacing the control
board, contact Yaskawa or your nearest sales representative.
IGBT Maintenance Time (50%)
LT-4
IGBTs have reached 50% of their expected performance life.
Note: An alarm output (H2-oo = 10) will only be triggered if H2-oo = 2F.
Check the load, carrier frequency, and output frequency.
Heatsink Overheat
oH
The temperature exceeded the value set to L8-02.
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
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
YES
Minor Fault
(H2-oo = 10)
–
Minor Fault
(H2-oo = 10)
–
Minor Fault
(H2-oo = 10)
–
Minor Fault
(H2-oo = 10)
–
Minor Fault
(H2-oo = 10)