1 Connections
The connections for a two smoke detector variant are shown below. For a single channel smoke
version, omit the connections for Alarm 2.
The fault relay output of the ASD 535 is fail-safe and de-activates when a fault condition or total
power loss occurs. The relay is shown in the deactivated condition.
Activation and End-of-Line resistors depend on the specific interfaces used. Refer to the
documentation supplied with the loop module. For the 55000-588, these are E = 20K ohm, A =
4K7 ohm. These should be located at the ASD 535 terminals.