LS Industrial Systems SV-iE5 Series User Manual

Chapter 8. Troubleshooting and Maintenance
8-4
 Fault Remedy
Protective
function
Cause Remedy
Output Phase
loss

Faulty contact of
magnetic switch at output
 Faulty output wiring
 Make connection of magnetic
switch at output of the inverter
securely.
 Check output wiring.
Over voltage

Decel time is too short
compared to the inertia of
the load(GD
2
).
 Regenerative load is at
the inverter output.

Line voltage is too high.

Increase the Decel time.
 Check whether line voltage
exceeds its rating.
Low voltage

Line voltage is low.
 Load larger than line
capacity is connected to
line (ex: welding machine,
motor’s direct input)
 Faulty magnetic switch at
the input side of the
inverter.
 Check whether line voltage is
below its rating.
 Check the incoming AC line.
Adjust the line capacity
corresponding to the load.
 Change a magnetic switch.
External fault A
contact input

The multi function
terminals(P66 ~ P70) set
to “18 (External fault-A)” or
“19 (External trip signal
input : fault-B)” in
P66~P70 in PG Group is
ON.

Eliminate the cause of fault at
circuit connected to external
fault terminal or cause of
external fault input.
External fault
B contact input

No frequency command
is applied to AI terminal.
 Communication
command is cuts off

Check the wiring of AI and
frequency reference level.
 In case of a program set to
periodically update frequency,
check the communication line or
operation of master device.
Parameter save error Hardware fault
 Contact your local LSIS sales
representative.
 EEP message occurs when first
allowing power after upgrading
software due to A/S service. At
the moment, turn it off and retry.

LS Industrial Systems SV-iE5 Series Specifications

General

Brand	LS Industrial Systems
Model	SV-iE5 Series
Category	Inverter
Language	English