Chapter 8 - Troubleshooting & Maintenance
182
Keypad Display
LCD
7-Segment
Protective
Function
Description
LOP
LOR
LOV
LOI
LOX
PL
RL
VL
IL
XL
Operating Method
when the
Frequency
Reference is Lost
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.
Inv. OLT
IOLT
Inverter Overload
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.
Morek IT OÜ, Rauna 24, 76506 Saue Harjumaa, Estonia. www.morek.eu Tel. +372 604 1423 Fax +372 604 1447 [email protected]