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DISTRIBUTED I/O
Relay Modules MCD 3 and MCE 3
The relay modules facilitate the control of peripheral devices
with high load via the analog outputs. Fig. 4 and Fig. 5
present connection examples for the relay modules MCD 3
and MCE 3, respectively.
FUSE
230 Vac / 120 Vac
1112131415161718
MCD 3
K1
2
K3
1 2
3
4 5
6 7 8
L N
Fig. 4. Analog outputs, connection of relay MCD 3
MCD 3
Relay terminal 17 controls the changeover contact K3. Relay
terminal 18 controls the ON contacts K1, K2. Ground can be
looped through terminals 2/3.
Attention: Always connect the same side of the transformer to the same side of XSL511.
AO8
AO7
AO6
AO5
AO4
AO3
AO2
AO1
Connector Module
XSL 511
LON
1
4
LON
2
5
shield
3
6
shield
Honeywell AG
Made in Germany
EN0B-0090GE51 R0802
AO1
18
AO2
19
AO3
20
AO4
21
0.2 A
3 A
K 1
K 3
K 2
A1
A1
34
52
33
51
32
50
31
49
30
48
29
47
28
27
8
26
7
25
6
24
5
23
4
22
3
21
2
20
1
19
S
18
GND
PE
PE
Fig. 6. XFL522B analog output module
FUSE
230 Vac / 120 Vac
11 12 13 14 15 16 17 18
MCE 3
K1
K2 K3
1 2 3
4 5 6 7 8
Fig. 5. Analog outputs, connection of relay MCE 3
MCE 3
Relay terminal 16 controls the ON contact K3. Relay terminal
17 controls the changeover contact K2. Relay terminal 18
controls the changeover contact K1.
Power Supply
Several relay modules can be connected in series via the
bridged terminal pair:
24 Vac:
Terminals 11/12 of the relay
24 Vac (-):
Terminals 13 to 16 of the relay (MCD3)
24 Vac (-):
Terminals 13 to 15 of the relay (MCE3)
A1
A1
34
52
33
51
32
50
31
49
30
48
29
47
28
27
AO8
8
26
AO7
7
25
AO6
6
24
AO5
5
23
AO4
4
22
AO3
3
21
AO2
2
20
AO1
1
19
S
18
GND
PE
Connector Module
PE
XSL 511
LON
1
4
LON
2
5
shield
3
6
shield
Honeywell AG
Made in Germany
8
AO1
18
AO2
19
AO3
20
AO4
21
0.2 A
2 A
K 1
K 2
K 3
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