Specifications

ManualsBrandsBosch ManualsConsumer electronics24VDC

D9142F 24VDC Power Supply

Operation and Installation

Table of Contents:

I. Description ...................................................................................................................2

II. Installation ........................................................................................................ 3

A. Installing the D9142F.................................................................................... 3

1. Mounting the Enclosure .......................................................................... 3

2. Installing the D9142M.............................................................................. 4

3. Installing the D1601................................................................................. 4

B. Connecting AC Power .................................................................................. 4

C. Batteries ....................................................................................................... 7

1. Battery Connection ............................................................................... 7

2. Battery Supervision .............................................................................. 8

3. Stand-by Battery Calculations ............................................................. 8

D. Connecting Auxiliary Devices ..................................................................... 9

E. Power Supply Supervision .......................................................................... 9

F. LED Indicators ............................................................................................ 11

G. Switched Output Control ........................................................................... 12

III. Specifications.................................................................................................... 13

Summary of content (12 pages)

PAGE 1
D9142F 24VDC Power Supply Operation and Installation Table of Contents: I. Description ...................................................................................................................2 II. Installation A. ........................................................................................................ 3 Installing the D9142F .................................................................................... 3 1. Mounting the Enclosure ......................................
PAGE 2
Description The D9142F is a UL listed, Auxiliary Power Supply for use in Commercial Fire Alarm System applications. It provides up to 4 amps of power for charging batteries and powering auxiliary or indicating devices. The D9142F is provided in its own red enclosure that is louvered for ventilation. The green AC LED and the red Trouble LED are visible through the door. The enclosure also has room to install two 12 volt, 7 amp hour batteries. Power is supplied to the system via the D1601 Transformer.
PAGE 3
Figure 2: D9142F Power Supply You should have the following system components when you receive your D9142F Power Supply: • One D1601 Transformer with Dual Secondary Winding • One D8109L Louvered Enclosure with lock and key • One D9142M Power Supply Assembly which includes the following: • D9142LC Power Supply Board • D9102 Mounting Skirt • Operation and Installation Manual • Yellow wiring harness, provides 16.
PAGE 4
To attach the enclosure to the wall, use mounting hardware that is capable of supporting 55 pounds of equipment. You may need to mount a plywood sheet to the wall in order to support the weight of the power supply and batteries. 1. Position the enclosure on the surface so that is level. 2. Use the holes to mark the location for anchors. 3. Install anchors into the surface. 4. Using the three top anchor locations, drive the screws about 3/4 of the way in. 5. Hang the enclosure on the partially driven screws.
PAGE 5
Connect power to the 120 VAC input terminals, following these steps: 1. Remove the knockout and install appropriate hardware for connection to conduit. 2. Remove the protective terminal cover marked CAUTION 120 VAC. 3. Pull the 120 VAC Power wires through the conduit hardware installed in the knockout. 4. Connect the wires as marked on the board. 5. Replace the protective cover over the 120 VAC Input terminals.
PAGE 6
Locating Power Connectors on the D9142F The D9142 provides power to and receives low voltage AC power back from the D1601 Transformer (see Figure 4). The D1601 transformer is provided with a wiring harness that is terminated with a connector. The J8 connector is where the transformer is connected to the D9142. Figure 4: Plugging in the Power AC Power for the Communicator The D9142F can also provide 16.5 VAC, 40 VA to power the control/communicator.
PAGE 7
Installing the Batteries The D9142F uses two sealed lead acid batteries rated at 12 volt, 7 Ah (Radionics D126) connected in series to provide a 24 volt stand-by power. Two batteries must be used. The power supply will not provide standby power with only one battery connected. You must use sealed lead acid batteries: The D9142F is designed to charge only sealed lead acid batteries. Using any other type of battery may cause damage to the D9142F or the batteries.
PAGE 8
Battery Supervision The D9142F supervises the batteries for both missing and low battery conditions. To maintain battery lead supervision, and optimum performance, do not parallel additional batteries on to the power supply. When the battery is disconnected or the battery voltage drops into the 22 - 24 VDC range, the red Trouble LED lights and the power supply triggers the Low Battery Trouble output. When battery is restored and the voltage returns to the 24.2 - 26.
PAGE 9
Do not connect more than 1.5 amps of stand-by or continuous current to the D9142F. The alarm load can not exceed 3 amps. Together the continuous and alarm load cannot exceed 4 amps. Example: If your stand-by current or continuous load is 1.5 amps, the alarm power cannot exceed 2.5 amps for all devices connected to the D9142F.
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.
PAGE 11
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. Figure 9: Connecting the Summary Trouble LED Indicators The D9142F has two system status LEDs located on the lower left side of the board. (see Figure 3).
PAGE 12
Figure 11: Connecting Switched Output Control Switched Output Control A remote device can switch the D9142F power output on or off with a 12 VDC trigger voltage or a dry contact closure. When +12 VDC is applied to terminal 2 of the D9142F, the power output is disabled. A dry contact device can also disable power by shorting terminal 1 and 2 on the D9142F. If using this feature, connect the wire as shown in Figure 11. Use this feature to remove power from devices.