5.9 Installation with Bypass Contactor
The VLT
®
Soft Starter MCD 500 is installed with a bypass contactor (AC1 rated). The soft starter run output controls the
bypass contactor. The run output is by default assigned to output relay B (terminals 21, 22, 24).
K1
24
VD
22
21
13
14
24
33
34
06
05
08
07
17
18
25
11
16
A6
A5
A4
15
S1
S2
S3
E
+
+
6/T3
2/T1
4/T2
5/L3
3/L2
1/L1
L3B
L1B
L2B
K1
F1
5
6
7
4
2
A
3
1
177HA523
.1
1
Control voltage (model dependent)
K1
Bypass contactor
2
24 V DC output
F1
Semiconductor fuses (optional)
3
Remote control inputs
S1
Start contact
4
Motor thermistor input (PTC only)
S2
Stop contact
5
Relay outputs
S3
Reset contact
6
3-phase supply
13, 14
Relay output A
7
Motor terminals
21, 22, 24
Relay output B
33, 34
Relay output C
Illustration 5.11 Installation with Bypass Contactor
Parameter settings:
•
Parameter 4-4 Relay B Function
-
Select
Run
- assigns the run output function to output relay B (default value).
Product Features
VLT
®
Soft Starter MCD 500
44
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MG17K602
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