Fault Detection - YASKAWA CIMR-R5U23P71A Instruction Manual

6.1 Fault Detection

6.1 Fault Detection
When the power regenerative unit detects a fault, the fault code is displayed on the Digital Operator and the fault contact output operates.
When a fault has occurred, refer to the following table to identify and correct the cause of the fault.
Use one of the following methods to reset the fault after restarting the power regenerative unit.
• Turn ON the fault reset signal.
• Press the RESET Key on the Digital Operator.
• Turn the main circuit power supply OFF and then ON again.
Fault Display
PUF
IGBT, Fuse Failure
UV1
Dc Bus Undervolt
UV2
CTR PS Undervolt
UV3
MC Answerback
AUv
Ac Undervoltage
FdVe
Power F Fault
SrC
Power Supply Flt.
OC
Over Current
SC
Short Circuit
OV
Dc Bus Overvolt
OH
Heatsink Overtmp
OH1
Heatsink Max temp
50
Table 6.1 Fault Displays and Processing
Meaning
Fuse Blown
The fuse in the main circuit is blown.
The main transistor has damaged.
Main Circuit Undervoltage
The main circuit DC voltage is below
the undervoltage detection level
(L2-05).
200 V class: Approx. 190 VDC
400 V class: Approx. 380 VDC
Control Power Fault
The control power supply voltage
dropped.
Inrush Prevention Circuit Fault
A fault occurred in the inrush
prevention circuit.
AC Power Undervoltage
AC power undervoltage occurred
during running.
200 V class: Approx. 150 VAC or less
400 V class: Approx. 300 VAC or less
Power Supply Frequency Fault
AC power supply frequency has
exceeded the setting value (F1-10).
Power Supply Fault
The phase of the input power supply has
changed after turning ON the control
power supply.
Overcurrent
The output current of the power
regenerative unit exceeded the
overcurrent detection level.
(200% of rated current)
IGBT Short-circuit
The IGBT gate signal was short-
circuited.
Main Circuit Overvoltage
The main circuit DC voltage exceeded
the overvoltage detection level.
200 V class: Approx. 400 VDC
400 V class: Approx. 800 VDC
Heatsink Overheating
The temperature of the power
regenerative unit's cooling fins
exceeded the setting in L8-02.
(Stopping method can be changed by
L8-03.)
Heatsink Overheating
The temperature of the power
regenerative unit's cooling fins
exceeded 105°C.
(Stopping method: Coast to stop)
Probable Causes
The output transistor has failed because
of a short-circuit or overcurrent.
• An open-phase occurred with the
input power supply.
• A momentary power loss occurred.
• The wiring terminals for the input
power supply are loose.
—
—
• An open-phase occurred with the
input power supply.
• A momentary power loss occurred.
• The wiring terminals for the input
power supply are loose.
• The power supply fluctuations
occurred during running.
• Power loss occurred during running.
• An open-phase occurred with the
input power supply.
• A momentary power loss occurred.
• The wiring terminals for the input
power supply are loose.
• A short-circuit occurred at the power
regenerative output.
• Power supply drop
• Faulty wiring
A short-circuit of the PWM signal
occurred.
The deceleration time is too short and
the regenerative energy from the motor
is too large.
The power supply voltage is too high.
The ambient temperature is too high.
There is a heat source nearby.
The cooling fan of the power
regenerative unit has stopped.
The ambient temperature is too high.
There is a heat source nearby.
The cooling fan of the power
regenerative unit has stopped.
YASKAWA ELECTRIC TOEP C710656 01C YASKAWA - RC5 Instruction Manual
Corrective Actions
Replace the power regenerative unit
after correcting the cause.
Reset the fault after correcting its cause.
• Try turning the power supply off and
on.
• Replace the power regenerative unit if
the fault continues to occur.
• Try turning the power supply off and
on.
• Replace the power regenerative unit if
the fault continues to occur.
Reset the fault after correcting its cause.
Reset the fault after correcting its cause.
Reset the fault after correcting its cause.
Reset the fault after correcting its cause.
Replace the control card.
• Increase the deceleration time.
• Check the capacity of the power
regenerative unit.
• (Increase the capacity.)
Decrease the voltage so it is within
specifications.
Install a cooling unit.
Remove the heat source.
Replace the cooling fan. (Contact our
sales representative.)
Install a cooling unit.
Remove the heat source.
Replace the cooling fan. (Contact our
sales representative.)