LS SV-xxx-iP5A-2, Manual

Page: 88 / 138

Chapter 6
– Troubleshooting and Maintenance
6-2
Keypad
Display
Protective
Function
Description
Output Phase
Open
Output Phase
open
The inverter turns off its output when the one or more of the
output (U, V, W) phase is open. The inverter detects the output
current to check the phase open of the output.
Input Phase
Open
Input Phase
Open
The inverter turns off its output if the one or more of the input (R,
S, T) phase is open. The inverter detects the intput current to
check the phase open of the input. If smaller load is used, it can
not be detected.
BX
BX Protection
(Instant Cut
Off)
Used for the emergency stop of the inverter. The inverter
instantly turns off the output when the BX terminal is turned ON,
and returns to regular operation when the BX terminal is turned
OFF. Take caution when using this function.
HW-Diag
Inverter H/W
Fault
A fault signal is output when an error occurs to the control
circuitry of the inverter. There are the Wdog error, the EEP error,
Input phase open, NTC open and the ADC Offset for this fault.
COM Error
CPU Error
Comm. Error
This fault is displayed when the inverter cannot communicate
with the keypad.
Inv. OLT
Inverter
Overload
The inverter turns off its output when the output current of the
inverter flows more than the rated level
(110% for 1 minute, 130% for 4 seconds).
NTC open NTC Open This fault is displayed when inverter internal NTC is opened.
LOP
LOR
LOV
LOI
LOX
Operating
Method when
the Frequency
Reference is
Lost
According to the I/O-92 [Operating method at loss of freq.
reference] setting, there are three modes: None (continuous
operation), Stop (decelerate to stop), and Free Run (free run to
stop),
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 sub-board (V2, ENC) analog frequency
reference is lost.
Lost cmd This fault is diaplayed when I/O -18 sets to Protection.
Fuse Open Fuse Open
This fault is displayed when inverter internal fuse is opened by
over current. (applied above 37 kW products)
Output Fault
Trip
No Motor Trip Trip has occurred according to setting of FU1 - 57~59.
Keypad Open Keypad FLT
Indicats wire is separated from keypad. It is displayed only DRV-
23 set to Fault.
To reset fault, Press
RESET key, close RST-CM terminals or cycle the input power.
If a problem keep occur, please contact the factory or your local distributor.