Bosch 24VDC Operation And Installation page 10

Trouble Output Header
The five trouble conditions have outputs on the Communicator Output Connector, J3, located on the
D9142F board. This five pin header is located near the bottom left-hand corner of the power supply.
Using the five conductor wiring harness found in the D9142M package, a separate trouble output can be
tied into its own zone or point on the control / communicator. Each output is an open collector that
shorts the zone to ground to indicate a trouble condition. The wiring harness connector is keyed (see
Figure 7).
Select the power supply supervision conditions to be communicated. Connect the appropriate wire to the
positive side of the communicator's zone input. Install the communicator's end-of-line resistor across
the communicator's screw terminals. A ground reference must be established between the power
supply and the communicator. Connect a wire from the D9142F, terminal 7 (- Out) to a common
terminal on the communicator.
Summary Trouble Relay
The Summary Trouble Relay can be activated by one or more of the five trouble conditions using the S1
dipswitch. This relay can be used as a common trouble indicator. To activate the relay for a specific
trouble condition, move the switch to the on position. For the factory default settings see Figure 8.
F01U036364-03
Figure 7: Connecting Trouble Output to the Communicator
Figure 8: Dip Switch Settings Default
D9142F Operation and Installation
Page 10 © Bosch Security Systems, Inc.