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6 Troubleshooting
SToF
Safe Torque OFF Hardware One of the two terminals H1-HC or H2-
TiM
Keypad Time Not Set
TrPC
IGBT Maintenance Time
(90%)
Uv
Undervoltage
◆
Parameter Setting Errors
Parameter setting errors occur when multiple parameter settings do not agree, or when parameter setting values
are not correct. Refer to the table in this section, examine the parameter setting that caused the error, and remove
the cause of the error. You must first correct the parameter setting errors before you can operate the drive. The
drive will not send notification signals for the faults and alarms when these parameter setting errors occur.
Code
Name
oPE01
Drive Capacity Setting
Error
346
HC received the Safe Disable input
signal.
The Safe Disable input signal is wired
incorrectly.
There is internal damage to one Safe
Disable channel.
There is a battery in the LCD keypad,
but the date and time are not set.
The IGBT is at 90% of its expected
performance life.
The drive input power voltage is
changing too much.
There is a phase loss in the drive input
power.
There is loose wiring in the drive input
power terminals.
There was a loss of power.
The main circuit capacitors have
become unserviceable.
The drive input power transformer is too
small and voltage drops when the power
is switched on.
Air inside the drive is too hot.
The Charge LED is broken.
Causes
The value set in o2-04 [Drive Model
(KVA) Selection] does not agree with the
drive model.
YASKAWA ELECTRIC SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
• Make sure that the Safe Disable signal is input
from an external source to terminal H1-HC or
H2-HC.
• When the Safe Disable function is not in use,
connect terminals H1-HC and H2-HC.
Replace the control board or the drive. For
information about replacing the control board,
contact Yaskawa or your nearest sales
representative.
Set the date and time with the LCD keypad.
Replace the IGBT or the drive. For information
about replacing the control board, contact Yaskawa
or your nearest sales representative.
• Review the power supply voltage so that it
matches the drive rated voltage.
• Make the drive input power stable.
• If the input power supply is good, examine the
magnetic contactor on the main circuit side for
problems.
Examine for wiring errors or disconnected wires in
main circuit drive input power, and repair
problems.
Tighten the terminal screws to the correct
tightening torque.
Improve the power supply.
Examine the capacitor maintenance time in
monitor U4-05 [CapacitorMaintenance]. If U4-05
is more than 90%, replace the control board or the
drive. For information about replacing the control
board, contact Yaskawa or your nearest sales
representative.
• Examine for an alarm when a molded-case
circuit breaker, Leakage Breaker (ELCB, GFCI,
or RCM/RCD) (with overcurrent protective
function), or magnetic contactor is ON.
• Check the capacity of the drive power supply
transformer.
Measure the ambient temperature of the drive.
Replace the control board or the drive. For
information about replacing the control board,
contact Yaskawa or your nearest sales
representative.
Possible Solutions
Set o2-04 to the correct value.
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