Specifications

Application Examples Softstart UK
10. Application Examples
10.1. Installation with Main Contactor
The LV-DS is installed with a main contactor (AC3 rated). Control voltage must be supplied from the input side
of the contactor.
The main contactor is controlled by the LV-DS Main Contactor output, which by default is assigned to Output
Relay A (terminals 13, 14).
KM 1
KM 1
F
1
22
21
6/
T
3
2/
T
1
13
14
4/T2
2
4
33
34
5/L3
3/L2
S1
S2
E
1/
L
1
65
64
41
40
56
5
7
58
53
55
A6
A5
A4
54
A
08877.A
6
3
1
2
4
5
+
+
1
Three-phase supply
2
Motor terminals
3
Control voltage
4
Remote control inputs
5
Motor thermistor input
6
Relay outputs
KM1
Main contactor
F1
Semiconductor fuses (optional)
S1
Start/stop contact
S2
Reset contact
13, 14
Relay output A
21, 22, 24
Relay output B
33, 34
Relay output C
Parameter settings:
• Parameter 7A Relay A Function
• Select 'Main Contactor' - assigns the Main Contactor function to Relay Output A (default setting)
50/64 710-15797-00A – LV-DS User Manual