LSIS 6731001500, User Manual

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Learning Protection Features
A warning or fault trip (cutoff) occurs when the motor reaches an overload state, based on the
motor’s rated current. The amount of current for warnings and trips can be set separately.
Overload Early Warning and Trip Setting Details
output 1 item
Code Description
PRT-17
OL Warn Select
If the overload reaches the warning level, the terminal block multi-function
output terminal and relay are used to output a warning signal. If ‘1 (Yes)’ is
selected, it will operate. If ‘0 (No)’ is selected, it will not operate.
PRT-18
OL Warn Level,
PRT-19
OL Warn Time
When the input current to the motor is greater than the overload warning level
(OL Warn Level) and continues at that level during the overload warning time (OL
Warn Time), the multi-function output (Relay 1, Q1) sends a warning signal. When
Over Load is selected at OUT-31, OUT-33, the multi-function output terminal or
relay outputs a signal. The signal output does not block the inverter output.
PRT-20
OL Trip Select
Select the inverter protective action in the event of an overload fault trip.
Setting Function
0 None No protective action is taken.
1 Free-Run In the event of an overload fault, inverter output is
blocked and the motor will free-run due to inertia.
3 Dec If a fault trip occurs, the motor decelerates and stops.
PRT-21 OL Trip
Level,
PRT-22 OL Trip
Time When the current supplied to the motor is greater than the preset value of the
overload trip level (OL Trip Level) and continues to be supplied during the
overload trip time (OL Trip Time), the inverter output is either blocked according
to the preset mode from PRT-17 or slows to a stop after deceleration.
Note
Overload warnings warn of an overload before an overload fault trip occurs. The overload warning
signal may not work in an overload fault trip situation, if the overload warning level (OL Warn Level)
and the overload warning time (OL Warn Time) are set higher than the overload trip level (OL Trip
Level) and the overload trip time (OL Trip Time).