LSIS LSLV0055H100-4COFN - Fan Fault Detection

Learning Protection Features
336
Under Load Trip and Warning Setting Details
Code
Description
PRT-23
UL Source
Select a source to detect the under load trip. An under load trip can be
detected using output current or output power.
PRT-24
UL Band
Make a standard value for the under load fault occurrence using
system load%-UL Band value set in each frequency of the load
characteristics curve made by the AP2-01 Load Tune.
PRT-25 UL Warn Sel
Select the under load warning options. Set the multi-function output
terminals (at OUT-31–35 and 36) to ‗7‘ (Under load). The warning
signals are output when under load conditions occur.
PRT-26 UL Warn
Time
A protect function operates when under load level condition explained
above maintains for the warning time set.
PRT-27 UL Trip Sel
Sets the inverter operation mode for situations when an under load
trip occurs. If set to ‗1 (Free-Run)‘, the output is blocked in an under
load fault trip event. If set to ‗2 (Dec)‘, the motor decelerates and stops
when an under load trip occurs.
PRT-28 UL Trip Time
A protect function operates when under load level conditions
explained above maintain for the trip time set.
To operate under load trip properly, a load tuning (AP2-01 Load Tune) must be performed in
advance. If you cannot perform a load tuning, manually set the load fit frequencies (AP2-02
Load Fit Lfreq–AP2-10 Load Fit Hfreq). The Under Load protection does not operate while the
Energy Save function is in operation.
6.3.1 Fan Fault Detection
Group
Code
Name
LCD Display
Parameter Setting
Setting range
Unit
PRT
79
Cooling fan fault
selection
Fan Trip
Mode
0
Trip
OUT
31–35
Multi-function
relay 1–5
Relay 1–5
8
Fan Warning
-
OUT
36
Multi-function
output 1
Q1 Define
Fan Fault Detection Setting Details