D9412GV3/D7412GV3 Operation and Installation Guide | 6.0 | Power Outputs |
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6.4Programmable Power Output Terminals 6, 7, and 8
6.4.1Programming
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.
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 Bosch Security Systems, Inc. defaults set Relay A (Terminal 6) as a Steady Alarm Bell output, Relay B (Terminal 7) as a Pulsed Fire Bell output, and Relay C (Terminal 8) as a Verification or Reset output for smoke detectors. The D9412GV3/D7412GV3 Program Entry Guide (P/N: F01U170807) contains complete instructions for programming relays. Refer to Sections 6.4.2 Terminals 6 and 7, 6.4.3 Fire System Power Formula, and 6.4.4 Terminal 8 on page 27 for descriptions of the functions of each terminal.
Power Restricted for Fire and Combined Fire and Burglary Systems: Fire systems are prohibited from using the battery for determining alarm power. Use the fire system power formula that follows to calculate the current available for fire and combined fire and burglary systems.
6.4.3Fire System Power Formula
To calculate the current available at Terminals 6 and
7 for fire and combined fire and burglary systems:
1.Add together the current draws for all devices connected to Terminals 3, 8, 24, and 32, and the accessory connector. This is the total current required for the normal standby condition (NSC).
2.The current available for NSC is 1.4 A. Subtract the NSC current required calculated in Step 1 from the NSC current available, 1.4 A. The difference is the alarm current available for Terminals 6 and 7.
In formula format:
1.4 A − NSC current | = Alarm current |
required (Step 1) | available |
Refer to the Bell Parameters section of the program to set the Fire Bell, Alarm Bell output responses for relays. Four annunciation patterns are available: Steady, Pulsed, California Standard, and Temporal Code 3.
Voltage Output at Terminals 6, 7, and 8
If Terminals 6, 7, and 8 do not provide the expected output, check:
∙Programming for Relays A, B, and C in the relays section of the program.
∙Bell Parameters section of the program to confirm that the Alarm and Fire Bell responses are programmed for the expected duration and pattern.
∙Point Assignments section to confirm that each point is programmed for the expected local response.
6.4.2Terminals 6 and 7
When activated, Terminals 6 (Relay A) and 7 (Relay B), provide positive (+) 12.0 VDC Nominal power output. Use the power at Terminals 6 and 7 to power bells, siren drivers, piezoelectric fire sounders, electronic horns, or other devices.
Programming determines the format of the output and the conditions that activate it. One
Refer to the D9412GV3/D7412GV3 Approved Applications Compliance Guide (P/N: F01U143069) for module or accessory current requirements.
6.4.4Terminal 8
Terminal 8 provides continuous positive (+) 12.0 VDC Nominal power. Relay C interrupts the power at Terminal 8 when activated. Use Terminal 8 to power smoke detectors or other devices that are reset by interrupting power. One
Verification and Reset Relay
The default program sets Relay C (Terminal 8) as a verification and reset relay. Refer to Relay Parameters and Point Assignments in the D9412GV3/D7412GV3 Program Entry Guide (P/N: F01U170807) for instructions on programming verification and reset relays and points.
Performing a sensor reset at a keypad produces a
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