Power Outputs; Circuit Protection; Total Available Power; Continuous Power Outputs Terminals - Radionics D9412G Operation And Installation Manual

5.0

Power Outputs

5.1

Circuit Protection

Three Positive Temperature Coefficients (PTCs) protect the panel from short circuits on both the continuous and
programmable power outputs. If the panel is programmed for power supervision and short is sustained on one of
the power outputs, the panel transmits a BATTERY LOW or BATTERY MISSING for Radionics' Modem IIIa
Communication Format, or TROUBLE ZN 9 for BFSK.
One PTC protects Terminal 3: Auxiliary Power and Terminal 24: ZONEX Power. A short on one disrupts the power
to the others.
One PTC protects Terminal 6: Alarm Power Output, Terminal 7: Alternate Alarm Power Output, and Terminal 8:
Switched Auxiliary Power. A short on one of these terminals disrupts the power to the other two.
One PTC protects Terminal 32: Power +.
5.2

Total Available Power

The system produces up to 1.4 amp of combined power at 10.2 VDC to 13.9 VDC for all powered devices. The
outputs listed below share the available power. These outputs are shown as red circles on the face plate.
Terminal 3 - Auxiliary Power. Use this terminal to power devices requiring continuous power.
Terminal 6 (Relay A) - Alarm Power Output. Normally open, power on alarm.
Terminal 7 (Relay B) - Alternate Alarm Power Output. Normally open, power on alarm.
Terminal 8 (Relay C) - Switched Auxiliary Power. Normally open, power off on reset.
Terminal 24 - ZONEX Power. Use this terminal to power ZONEX Modules such as the D8125, D8128D, and
D8129 Modules.
Terminal 32 - Power +
Use this terminal to power SDI (Serial Device Interface) devices such as command centers, the D9131A Parallel
Printer Interface Module, and the D9210B Wiegand
Accessory Connector
The D928 Dual Phone Line Switcher connects to the accessory connector.
5.3

Continuous Power Outputs Terminals

5.3.1

Continuous Current Draw

The continuous current draw for powered devices connected to Terminals 3, 8, 24, and 32 and the Accessory
Connector must not exceed 1.4 A. Devices powered from these outputs must operate over a range of 10.2 VDC to
13.9 VDC.
Power restricted for fire and combined fire/burglary systems: Use the Fire System Power Formula to calculate
the current available for fire and combined fire/burglary systems (see section 5.4 Programmable Power Outputs
Terminals ).
5.4

Programmable Power Outputs Terminals

5.4.1

Programming

The power outputs at Terminals 6, 7, and 8 are programmed as Relays A, B, and C. All relays are programmed in
the Relays section of the program. Relays are assigned a relay type, Fire Bell for example, when they are assigned
to an area. Relays can be assigned to one or more areas.
The Radionics defaults set Relay A (Terminal 6) as a Steady Alarm Bell output and Relay B (Terminal 7) as a
Pulsed Fire Bell output, and Relay C (Terminal 8) as a Verification/Reset output for smoke detectors. The D9412G/
D7412G Program Entry Guide contains complete instructions for programming relays. Descriptions of the
functional characteristics of each terminal appear on the next page.
See the Bell Parameters section of the program to set the Fire Bell, Alarm Bell output responses for relays. Four
annunciation patterns: Steady, Pulsed, California Standard, and Temporal Code 3 are available.
© 2002 Radionics
TM
Control Interface Module.
D9412G/D7412G Operation & Installation Guide
Page 29
D9412G/D7412G
Power Outputs
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