According to the I/O-48 [Operating Method when the Frequency Reference is
Lost] setting, there are three modes: continue operation, decelerate and stop,
and free run,
LOP: Displayed when option frequency reference is lost (DPRAM time out)
LOR: Displayed when option frequency reference is lost (Communication
network fault)
LOV: Displayed when ‘V1’ analog frequency reference is lost.
LOI: Displayed when ‘I‘ analog frequency reference is lost.
LOX: Displayed when sun-board (V2, ENC) analog frequency reference is lost.
The inverter turns off its output when the output current of the inverter flows
more than the rated level (150% for 1 minute, 200% for 0.5 seconds).
NTC open NTC
Thermal Sensor
Opened
Inverter uses NC thermal sensor for detecting heat sink temperature. If this
message is displayed, the thermal sensor wire may be cut. (Inverter keeps
operating)
Over Speed OSPD Overspeed
Inverter shuts off its output when a motor rotates at the frequency exceeding 20
Hz of its max speed.
MC Fail MCF M/C Fail
It is displayed when input power is not applied or M/C inside the inverter
malfunctions.
To reset fault, Press RESET key, Close RST-CM terminals or connect input power.
If a problem persists, please contact the factory or your local distributor.