LSIS sv-ig5a, User Manual

Page: 109 / 186

8-7
8.4 3-Wire
Group Display Parameter Name Setting Range Default Unit
I/O
group
I17
[Multi-function Input terminal
P1 select]
0
0 ~ 27
0
~ ~
I24
[Multi-function Input
terminal P8 select]
17 7

Select the terminal from P1-P8 for use as 3-Wire operation.

If P8 is selected, set I24 to 17 {3-Wire operation}.

Input signal is latched (saved) in 3-Wire operation. Therefore, inverter can be operated by
Push-button switch.

The bandwidth of pulse (t) should not be less than 50msec.
8.5 Dwell operation
Group Display Parameter Name Setting Range Default Unit
Function
group 2
H 7 [Dwell frequency] - 0.1 ~ 400 5.00
Hz
H 8 [Dwell time] - 0 ~ 10 0.0 sec

In this setting, motor begins to accelerate after dwell operation is executed for dwell time
at the dwell frequency.

It is mainly used to release mechanical brake in elevators after operating at dwell
frequency.

Dwell frequency: This function is used to output torque in an intended direction. It is useful in
hoisting applications to get enough torque before releasing a mechanical brake. Rated Slip
frequency is calculated by the formula shown below.
P1
P2
P8
CM
FX : I17 = 0
RX : I18 = 1
3-Wire : I24 = 17
FX
RX
Frequency
P8 (3-Wire)
t
For Service Call 800-848-2504
For Service Call 800-848-2504