LSIS S100 User Manual

232
Troubleshooting
LCD Display
Type
Description
Low
Voltage2
Latch
Displayed when internal DC circuit voltage is less than the specified value
during inverter operation.
Ground
Trip*
Latch
Displayed when a ground fault trip occurs on the output side of the inverter
and causes the current to exceed the specified value. The specified value
varies depending on inverter capacity.
E-Thermal Latch
Displayed based on inverse time-limit thermal characteristics to prevent
motor overheating. Operates when PRT-40 is set to a value other than 0.
Out Phase
Open
Latch
Displayed when a 3-phase inverter output has one or more phases in an
open circuit condition. Operates when bit 1 of PRT-05 is set to 1.
In Phase
Open
Latch
Displayed when a 3-phase inverter input has one or more phases in an open
circuit condition. Operates only when bit 2 of PRT-05 is set to 1.
Inverter OLT Latch
Displayed when the inverter has been protected from overload and
resultant overheating, based on inverse time-limit thermal characteristics.
Allowable overload rates for the inverter are 150% for 1 min and 200% for 4
sec. Protection is based on inverter rated capacity, and may vary depending
on the device’s capacity.
No Motor
Trip
Latch
Displayed when the motor is not connected during inverter operation.
Operates when PRT-31 is set to 1.
* S100 inverters rated for 4.0 kW or less do not support the ground fault trip (GFT) feature.
Therefore, an over current trip (OCT) or over voltage trip (OVT) may occur when there is a low-
resistance ground fault.
Protection Functions Using Abnormal Internal Circuit Conditions and External Signals
LCD Display
Type
Description
Over Heat Latch
Displayed when the tempertature of the inverter heat sink exceeds the
specified value.
Over
Current2
Latch
Displayed when the DC circuit in the inverter detects a specified level of
excessive, short circuit current.
External Trip Latch
Displayed when an external fault signal is provided by the multi-function
terminal. Set one of the multi-function input terminals at IN-65-71 to 4
(External Trip) to enable external trip.
BX Level
Displayed when the inverter output is blocked by a signal provided from the
multi-function terminal. Set one of the multi-function input terminals at IN-
65-71 to 5 (BX) to enable input block function.
H/W-Diag Fatal
Displayed when an error is detected in the memory (EEPRom), analog-
digital converter output (ADC Off Set), or CPU watchdog (Watch Dog-1,
Watch Dog-2).
• EEP Err: An error in reading/writing parameters due to keypad or
memory (EEPRom) fault.
•
ADC Off Set: An error in the current sensing circuit (U/V/W terminal,
current sensor, etc.).

LSIS S100 Specifications

General

Brand	LSIS
Model	S100
Category	DC Drives
Language	English