LSIS LSLV-G100 - Slip Compensation Operation

When a dwell operation is carried out for a lift - type load before its mechanical brake is
released, motors can be damaged or their lifecycle reduced due to overflow current in the
motor.
5.7 Slip Compensation Operation
Slip refers to the variation between the setting frequency (synchronous speed) and
motor rotation speed. As the load increases there can be variations between the
setting frequency and motor rotation speed. Slip compensation is used for loads that
require compensation of these speed variations.
Group
Code
Name
Setting
Setting
Range
Unit
dr
09
Control mode
2
Slip Compen
-
-
14
Motor capacity
2
0.75 kW (0.75 kW
based)
0–15
-
bA
11
Number of motor
poles
4
2–48
-
12
Rated slip speed
90 (0.75 kW based)
0–3000
Rpm
13
Rated motor
current
3.6 (0.75 kW based)
1.0–1000.0
A
14
Motor noload
current
1.6 (0.75 kW based)
0.5–1000.0
A
16
Motor efficiency
72 (0.75 kW based)
64–100
%
17
Load inertia rate
0 (0.75 kW based)
0–8
-
Slip Compensation Operation Setting Details
Code and
Features
Description
dr.09 Control
Mode
Set dr.09 to 2 (Slip Compen) to carry out the slip compensation
operation.
dr.14 Motor
Capacity
Set the capacity of the motor connected to the inverter.
bA.11 Pole
Number
Enter the number of poles from the motor rating plate.
bA.12 Rated Slip
Enter the number of rated rotations from the motor rating plate.
bA.13 Rated Curr
Enter the rated current from the motor rating plate.
bA.14 Noload Curr
Enter the measured current when the load on the motor axis is
removed and when the motor is operated at the rated frequency. If
no-load current is difficult to measure, enter a current equivalent to
30–50% of the rated motor current.