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Troubleshooting
9 Troubleshooting
This chapter explains how to troubleshoot a problem when inverter protective functions,
fault trips, warning signals, or faults occur. If the inverter does not work normally after
following the suggested troubleshooting steps, please contact the LS ELECTRIC customer
service center.
9.1 Trip and Warning
When the inverter detects a fault, it stops the operation (trips) or sends out a warning signal.
When a trip or warning occurs, the keypad displays the information briefly. Detailed
information is shown on the LCD display. Users can read the warning message at PRT-90.
When more than 2 trips occur at roughly the same time, the keypad displays the higher
priority fault information. In the keypad, fault trips with higher priority are displayed first. Use
the [Up], [Down], [Left] or [Right] cursor key on the keypad to view the fault trip information.
The fault conditions can be categorized as follows
•
Level: When the fault is corrected, the trip or warning signal disappears and the fault is
not saved in the fault history.
•
Latch: When the fault is corrected and a reset input signal is provided, the trip or
warning signal disappears.
•
Fatal: When the fault is corrected, the fault trip or warning signal disappears only after
the user turns off the inverter, waits until the charge indicator light goes off, and turns
the inverter on again. If the inverter is still in a fault condition after powering it on again,
please contact the supplier or the LS ELECTRIC customer service center.
9.1.1 Fault Trips
Protection Functions for Output Current and Input Voltage
LCD Display
Type
Description
Over Load
Latch
Displayed when the motor overload trip is activated and the
actual load level exceeds the set level. Operates when PRT-20
is set to a value other than ‘0’.
Under Load
Latch
Displayed when the motor underload trip is activated and the
actual load level is less than the set level. Operates when PRT-
27 is set to a value other than ‘0’.
Summary of Contents for LSLV-H100 Series
Page 17: ...Preparing the Installation 4 37 90 kW 3 Phase ...
Page 18: ...Preparing the Installation 5 110 132 kW 3 Phase ...
Page 19: ...Preparing the Installation 6 160 185 kW 3 Phase ...
Page 20: ...Preparing the Installation 7 220 250 kW 3 Phase ...
Page 21: ...Preparing the Installation 8 315 400 kW 3 Phase ...
Page 22: ...Preparing the Installation 9 500 kW 3 Phase ...
Page 35: ...Installing the Inverter 22 ...
Page 50: ...37 Installing the Inverter Input and Output Control Terminal Block Wiring Diagram ...
Page 104: ...91 Learning Basic Features 0 10 V Input Voltage Setting Details V1 Quantizing ...
Page 181: ...168 Learning Advanced Features PID Command Block ...
Page 182: ...169 Learning Advanced Features ...
Page 183: ...170 Learning Advanced Features PID Feedback Block ...
Page 184: ...171 Learning Advanced Features PID Output Block ...
Page 185: ...172 Learning Advanced Features PID Output Mode Block ...
Page 198: ...185 Learning Advanced Features EPID1 Control block ...
Page 199: ...186 Learning Advanced Features EPID2 Control block ...
Page 220: ...207 Learning Advanced Features ...
Page 235: ...222 Learning Advanced Features The Time Chart for the Exception Day ...
Page 506: ...Table of Functions 493 ...
Page 520: ...Table of Functions 507 8 16 4 Cooling Tower MC4 Group ...
Page 549: ...Troubleshooting 536 ...
Page 569: ...Technical Specification 556 11 3 External Dimensions 0 75 30 kW 3 phase 37 90 kW 3 phase ...
Page 570: ...Technical Specification 557 110 185 kW 3 phase ...
Page 601: ...588 ...
Page 602: ...589 ...
Page 603: ...590 ...