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26
en | Installing
4.11
Connecting Analog Input Devices
Notice!
Risk of damage to equipment
Do not connect external power supply to the AMC2 inputs.
When connecting a relay output to an AMC2 input use dry mode with potential-free contact -
refer to Connecting Relay Outputs, page 22.
Figure 4.16: Location of the analog input connectors
To detect the four states, the voltage drop in the connecting cable may not exceed special
values. The following table shows the maximum values of permissible cable resistance
depending on the used resistor combination.
R
1k
1k2
P
R
S
1k
220
220
1k2
260
270
1k5
310
330
1k8
340
380
2k2
430
2k7
490
3k3
3k9
4k7
5k6
6k8
2018-02 | AMC2-4WE |
1k5
1k8
2k2
220
210
200
270
270
260
340
350
350
390
410
410
460
490
510
540
570
620
610
650
700
720
790
880
Installation Manual
2k7
3k3
3k9
240
340
310
280
410
400
370
520
510
500
630
640
640
740
770
780
850
890
910
960
960
970
1050
1100
1200
1300
1400
4k7
5k6
6k8
330
290
200
460
420
340
620
580
510
770
750
700
910
910
880
1100
1100
1050
1200
1300
1300
1500
1500
1500
Bosch Access Systems GmbH
AMC2 Extension
8k2
240
420
620
810
1050
1250
1500
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