Bosch APC-AMC2-4R4CF - Page 78

78 en | Installing Access Modular Controller 2
2020-01 | V02 | Installation manual Bosch Access Systems V.B.
Notice!
Risk of damage to equipment
To prevent damage to the relays note the following specifications.
– 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:
– Flare move 12DC1W10A
– Flare move 24DC1W16A
If using locally manufactured products, please ensure that the specifications of the product
are identical with the those listed above.
A complete connection diagram of the relay output connectors is shown in Connecting
Diagrams, page 102.
Figure4.69: Recovery diode schematic
1 normally open/normally closed 1 normally open/normally
closed
2 common 2 common
3 load 3 load
4 diode 4 diode
5 voltage source
Notice!
Risk of damage to equipment
Do not connect externally powered devices in wet mode. This can damage the AMC2-4R4.