Led Indicators - Bosch 24VDC Operation And Installation

Summary Trouble Relay Wiring
When used as a remote trouble indicator, the trouble relay can be wired to trigger trouble sounders or
lights. A form C relay output activates when selected trouble event(s) occur. Wire the relay to switch
positive power to the indicating device as shown in Figure 9.

LED Indicators

The D9142F has two system status LEDs located on the lower left side of the board. (see Figure 3).
These status LEDs indicate the following:
AC LED
TROUBLE LED
POWER OUTPUT LED
LED Output Connector
The D9142F has two status LEDs that are visible through the door of the D8109L enclosure. The AC
LED (top) and Trouble LED ( bottom) have the same meaning and actions as the AC LED and Trouble
LED explained above. Connector J5 connects to the wire
harness of the remote status LED assembly. This
assembly mounts in the lower right accessory mounting
location of the D8109L enclosure (see Figure 1). Connect
the Remote LED harness as follows:
1. Knock out the three hole plugs in the lower accessory
2. Mount the LED assembly with the three screws
3. Connect the LED assembly wire harness to J5 on
© Bosch Security Systems, Inc.
Figure 9: Connecting the Summary Trouble
The red Trouble LED lights when the D9142F senses trouble.
Normally, this LED should be off.
The LED lights when the power output is normal. The LED
turns off when there is a fault such as a short circuit
condition on loop.
mounting position of the D8109L enclosure.
provided.
the D9142F board.
D9142F Operation and Installation
The green AC LED lights when AC Power is connected and
applied to the D9142F. Normally, this LED should be on.
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Figure 10: Status LED's
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