LSIS sv-ip5a User Manual

7-1
CHAPTER 7 - TROUBLESHOOTING & MAINTENANCE
7.1 Fault Display
When a fault occurs, the inverter turns off its output and displays the fault status in DRV-12. The last 5 faults
are saved in FU2-01 through FU2-05 with the operation status at the instance of fault.
Keypad Display
Protective
Function
Description
Over Current 1
Over Current
Protection
The inverter turns off its output when the output current of the inverter flows more
than 200% of the inverter rated current.
Ground Fault
Ground Fault
Protection
The inverter turns off its output when a ground fault occurs and the ground fault
current is more than the internal setting value of the inverter. Over current trip
function may protect the inverter when a ground fault occurs due to a low ground
fault resistance.
Over Voltage
Over voltage
protection
The inverter turns off its output if the DC voltage of the main circuit increases
higher than the rated value when the motor decelerates or when regenerative
energy flows back to the inverter due to a regenerative load. This fault can also
occur due to a surge voltage generated at the power supply system.
Over Load
Current Limit
Protection
(Overload
Protection)
The inverter turns off its output if the output current of the inverter flows at 120%
of the inverter rated current.
Over Heat
Inverter
Over Heat
The inverter turns off its output if the heat sink is over heated due to a damaged
cooling fan or an alien substance in the cooling fan.
E-Thermal
Electronic
Thermal
The internal electronic thermal of the inverter determines the over heating of the
motor. If the motor is overloaded the inverter turns off the output. The inverter
cannot protect the motor when driving a multi-pole motor or when driving
multiple motors, so consider thermal relays or other thermal protective devices for
each motor.
Overload capacity: 130% for 1 min
Ext. Trip External Trip
Use this function if the user needs to turn off the output by an external trip signal.
(Normal Open Contact) Inverter blocks the output to protect motor overload by
detecting through this terminal.
Low Voltage
Low Voltage
Protection
The inverter turns off its output if the DC voltage is below the detection level
because insufficient torque or over heating of the motor can occurs when the input
voltage of the inverter drops.
Over Current 2 IGBT Short
The inverter turns off the output if an IGBT short through or an output short
occurs.
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.
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
Communication
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.

LSIS sv-ip5a Specifications

General

Brand	LSIS
Model	sv-ip5a
Category	Controller
Language	English