Delta 28-299A Operations Instructions Page 37

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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
1
Control voltage (model dependent) KM1 Bypass contactor
2
24 VDC 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
Parameter settings:
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
®
is a registered Danfoss trademark
55
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