Connecting Relay Outputs - Bosch Access Modular Controller 2 Installation Manual

28 en | Installing
4.13

Connecting Relay Outputs

To operate locks or alarm systems, the AMC2-4R4 has eight relay outputs. The outputs will be
connected to the 3-pin pluggable screw connectors S5, S6, S10, S11, S17, S18, S22, and S23
- refer to chapter Connecting Diagrams, page 41.
Figure 4.15: Location of the relay output connectors
Each relay output can operate in 'wet' mode, using the AMC2-4R4's internal 12/24 Vdc power
supply for external devices or 'dry' mode with potential free contacts for externally powered
systems.
Figure 4.16: Wet mode and dry mode of the AMC2 relay outputs
Notice!
Risk of damage to equipment
To prevent damage to the relays note the following specifications.
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2020-01 | V02 |
the maximum switching current is 1.25 A
the maximum switching voltage is 30 Vdc
only ohm resistive load can be connected to the relay
inductive loads have to be short circuited using recovery diodes, see image below. These
diodes (1N4004) are supplied with every AMC2-4R4 package.
If you need higher voltage for special applications you have to connect external relays to
the outputs. Depending on the power supply mode, it is recommended to use the
following Wiegand relay types:
Installation manual
Access Modular Controller 2
Bosch Access Systems B.V.