8 Troubleshooting
34
YASKAWA ELECTRIC
TOEP C710656 09D YASKAWA Power Regenerative Unit - R1000 Quick Start Guide
Overload
Load is too heavy.
Reduce the load.
Regenerative Unit capacity is too small.
Replace the regenerative unit with a larger model.
The regenerative unit does not operate.
Start regenerative unit operation first, and then start regenerative unit
operation.
Operator Connection
Fault
–
External operator is not properly
connected to the regenerative unit.
Check the connection between the operator and the regenerative unit.
• Replace the cable if damaged.
• Turn off the input power and disconnect the operator. Reconnect the
operator and reapply regenerative unit input power.
Overvoltage
A momentary power loss occurred.
Investigate and correct the cause and reset the fault.
The regenerative load is too large.
Reduce the regenerative load.
Input power voltage is too high.
Check the voltage.
Lower input power voltage within the limits listed in the
specifications.
Regenerative Unit fails to operate
properly due to noise interference.
• Review the list of possible solutions provided for controlling noise.
• Review the section on handling noise interference and check the
control circuit lines, main circuit lines, and ground wiring.
The wiring of the power supply voltage
detection circuits (
,
, and
) and the wiring of the main circuit
terminals (R/L1, S/L2, and T/L3) is not
correct.
Correct the wiring.
Electrical noise interference causes the
regenerative unit 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.
Set number of fault restarts (L5-01) to a value other than 0.
There is a regenerative load while the
regenerative unit is stopped.
Operate the regenerative unit.
Power Supply
Undervoltage
Pre-Alarm
–
The power supply voltage is low.
Increase the power supply voltage.
A phase loss occurred in the input power
supply.
Check the input power supply for phase loss or an imbalance in the
interphase voltages.
Investigate and correct the cause and reset the fault.
Voltage detection failed.
Check
to see if they are wired correctly.
Input Power Supply
Fault
–
The fluctuation in the voltage of the input
power supply is too large.
Investigate and correct the cause and reset the fault.
A phase loss occurred in the input power
supply.
The capacity of the power supply is too
small.
The wiring is too long.
The phase imbalance is too large.
Input Phase Loss
Detection
The fluctuation in the voltage of the input
power supply is too large.
Investigate and correct the cause and reset the fault.
A phase loss occurred in the input power
supply.
The capacity of the power supply is too
small.
The wiring is too long.
The phase imbalance is too large.
IGBT Short Circuit or
Ground Fault
–
IGBT fault
• Check the wiring to the drive.
• Turn the power supply off and then on again to check operation.
If the problem continues, contact your Yaskawa representative or
nearest Yaskawa sales office.
IGBT short circuit detection circuit fault.
Digital Operator AL FL
Cause
Corrective Action
oL2
oPr
ov
r1/ 11
1/ 21
t1/ 31
PAUv
r1/ 11, 1/ 21, and t1/ 31
PF2
PF3
SC
D1000R1000_QSG_E_conditional.book 34 ページ ２０１８年２月２６日 月曜日 午後２時３８分
