5.9 Installation with Bypass Contactor
The MCD 500 is installed with a bypass contactor (AC1 rated). The bypass contactor is controlled by the MCD 500 Run Output
which by default is assigned to Output Relay B (terminals 21, 22, 24).
KM1
24
VDC
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
KM1
F1
5
6 7
4
2
A
3
1
177HA523.10
1
Control voltage (model dependent) KM1 Bypass contactor
24 VDC output F1 Semiconductor fuses (optional)
Remote control inputs S1 Start contact
Motor thermistor input (PTC only) S2 Stop contact
Relay outputs S3 Reset contact
3-phase supply 13, 14 Relay output A
Motor terminals 21, 22, 24 Relay output B
33, 34 Relay output C
Parameter 4-4 Relay B Function
Select Run - assigns the run output function to Relay Output B (default value).
Application Examples MCD 500 Operating Instruction
36 MG.17.K3.02 - VLT
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