Power Supply And Power Outputs; Power Supply - Primary; Primary (Ac) Power Circuit; Installing The Transformer - Bosch D9412GV4 Installation Manual

22 en | Power Supply and Power Outputs
4

Power Supply and Power Outputs

4.1

Power Supply - Primary

4.1.1

Primary (AC) Power Circuit

The primary source is a 16.5 VAC, 40 VA, internally-fused transformer (Bosch Security
Systems, Inc. Model D1640). The control panel draws 225 mA when idle and 300 mA when in
an alarm state. The total available auxiliary current is 1.4 A. Transient suppressors and spark
gaps protect the circuit from power surges. This protection relies on the ground connection at
Terminal 10. Ensure that you connect Terminal 10 to a proper ground. Refer to Connecting
Earth Ground, page 8.
AC Power Fail
The system indicates an AC power failure when Terminals 1 and 2 do not have power. The AC
Fail Time parameter sets the number of minutes or seconds without AC power before the
control panel acknowledges the failure and the number of minutes or seconds after the power
returns before the control panel acknowledges restored power.
Refer to the D9412GV4/D7412GV4 v2.02 Program Entry Guide (P/N: F01U265459) for
additional information about AC Fail Time and UL 864 requirements.
Reference the table below to view the Modem4 communication format signals.
Modem4 Events
AC Fail - mains power supply
AC Restore - mains power supply
Table 4.3: AC Power Fail
4.1.2

Installing the Transformer

Notice!
Do not short-circuit the terminals of the transformer. Shorting the terminals opens the
internal fuse, causing permanent failure. Connect the transformer to Terminals 1 and 2 of the
control panel before plugging it into the power source.
1.
2.
Notice!
Always connect the battery first and then plug in the transformer.
3.
4.
5.
2016.07 | 04 | F.01U.291.483
Modem4 code
D6500 Mode
Pssss
Rsss0
Use 18 AWG (1.22 mm) wire (minimum) to connect the transformer to the control panel.
The wire length should be as short as possible. The maximum length is 50 ft (15 m).
Connect the battery and plug in the transformer.
Route telephone and sensor loop wiring away from any AC conductors, including the
transformer wire.
AC wiring can induce noise and low level voltage into adjacent wiring. Route data wiring
away from AC and telephone wiring.
Connect the battery. Refer to Installing the Battery, page 23
Plug the transformer into an unswitched, 120 VAC 60 Hz power outlet only.
Secure the transformer to the outlet with the screw provided.
Modem4 Code Bosch
SIA Mode
NAT
NAR
UL Installation Guide
Contact ID Contact ID Codes
Events
AC Loss 1 301 00 000
AC Loss 3 301 00 000
Bosch Security Systens, Inc.