Fault Diagnosis And Corrective Actions - YASKAWA VS-616PS5 Series Quick Start Manual

Fault Diagnosis and Corrective Actions (continued)
Fault Display
GF
Ground fault (GF)
Ground Fault
OV
Overvoltage (OV)
Overvoltage
SC
Load short-circuit (SC)
Short Circuit
PUF
Fuse blown (FU)
DC Bus Fuse
Open
OH
Heatsink overheat
Heatsink Over
(OH1)
temp
OL1
Motor overload (OL1)
Motor Over-
loaded
OL2
Inverter overload
(OL2)
Inv Overloaded
OL3
Overtorque 1
Overtorque
OL4
Overtorque 2
PF
Input open-phase
Input Phase
Loss
LF
Output open-phase
Output Phase
Loss
RR
Braking transistor fail-
Dyn Brk Transis-
ure
tor
RH
Braking resistor unit
overheat
Dyn Brk Resistor
OS
Overspeed (OS)
Over Speed
PGO
PG open circuit (PGO)
PG open
66
Name
Inverter output grounding current exceeded
50% of inverter rated current.
The main circuit direct current voltage
exceeded the OV level.
Detection level:
230 V class: Approx. 400 V
460 V class: Approx. 800 V
Inverter output (load) is short-circuited.
The DC bus fuse is blown.
The output transistors were damaged.
The transistor heatsink temperature
exceeded the allowable value.
Inverter output exceeded the motor overload
level.
Inverter output exceeded the inverter over-
load level (thermo switch).
The torque reference exceeded the detection
level for longer than the specified time.
Inverter input power supply has open phase.
Large unbalance in input voltage.
Inverter output has open-phase.
The braking transistor has failed.
The braking resistor unit temperature has
exceeded the allowable value.
(Protects only inverter built-in type)
The motor speed exceeded the overspeed
level. (F1-08)
The PG line is broken.
Description
VS-616PS5 Installation & Quick Start Manual
Corrective Action
Check that motor insulation has
not deteriorated.
Check that connection between
inverter and motor is not dam-
aged.
Extend the deceleration time,
add braking circuit.
Check the motor coil resistance.
Check the motor installation.
Check for damaged transistor,
load side short circuit, ground-
ing, etc.
Check the fan and ambient tem-
perature.
Reduce the load.
Reduce the load, extend the
acceleration time.
Verify the parameter setting,
reduce the load at the motor.
Check the line voltage.
Re-tighten the input terminal
screws.
Check the output wiring.
Check the motor impedance.
Re-tighten the output terminal
screws.
The inverter requires repair.
Reduce the regenerative load.
-
Check the PG line.
Check the condition of the motor
lock or excessive load.
Class
A
A
A
A
A
A
A
A
B
A
A
A
A
A
A