60
Failure Codes:
Faults, which cannot be reset by manual operation:
Fault Code
Content
Probable Cause
What to do
CPF
CPU software
error
1. High electronic noise
1. Install RC type suppresser on all
contactor / brake coils
EPR
EEPROM error
1. EEPROM is damaged
1. Change EEPROM
- OV -
Over Voltage in
stop mode
1. Detection circuit is
damaged
1. Notify your supplier to check
- LV -
Low Voltage in
stop mode
1. Input voltage is too low
2. Current limit resistor
(R1) or fuse burned out
- 400V series T-verter
3. Detection circuit is
damaged
1. Correct input voltage
2. Change current limit resistor or
fuse
3. Notify your supplier to check
- OH -
Heat sink Over-
Heat in stop mode
1. Detection circuit is
damaged
2. Ambient temperature is
too high or ventilation
is poor
1. Notify your supplier to check
2. Lower ambient temperature or
improve ventilation
OH1 *
Braking resistor
overload
1. Decel. Time is too short
2. Frequent run/stop
operation
3. too much load
1. Prolong Decel. Time.
2. Prolong run/stop cycle
3. Set Fn_44 to xx0x and increase
resistance of braking resistor
Note:
When the braking resistor is overloaded during deceleration, the T-verter will stop braking and
displays OH1. When the heat is dissipated, the OH1 will disappear and the T-verter will start
braking again.
