Terminals 6 And 7; Fire System Power Formula; Terminal 8; Telephone Connections - Bosch D7212GV3 Operation And Installation Manual

.
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.
6.4.2

Terminals 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 self-resetting circuit
breaker protects Terminals 6, 7, and 8 against shorts.
Available Power
The system combines the 1.4 A of primary power
produced by the power supply with the secondary
power source (the battery) to produce a total of 2.0 A
of alarm power at 12.0 VDC Nominal. Terminals 6
and 7 share the available alarm power.
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.
6.4.3

Fire 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 required
(Step 1)
Refer to the D7212GV3 Approved Applications
Compliance Guide (P/N: F01U143080) for module or
accessory current requirements.
Bosch Security Systems, Inc. | 10/10 | F01U143079-03
D7212GV3 | Operation and Installation Guide | 7.0
= Alarm current
available
6.4.4

Terminal 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 self-resetting circuit breaker
protects Terminals 6, 7, and 8 against shorts.
Verification/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 D7212GV3
Program Entry Guide (P/N: F01U170808) for
instructions on programming verification/reset relays
and points.
Performing a sensor reset at a keypad produces a
five-sec relay activation of verification/reset relays.
The control panel ignores verification and ressettable
points during the five sec.
7.0

Telephone Connections

7.1

Registration

The Bosch Security Systems, Inc. D7212GV3 Control
Panel is registered with the Federal Communication
Commission (FCC) under Part 68, for connection to
the public telephone system using an RJ31X or
RJ38X jack installed by the local telephone company.
An RJ31X jack can be modified by placing a
jumper wire between Terminals 2 and 7 to
become an RJ38X jack.
7.2

Notification

Do not connect registered equipment to party lines or
coin-operated telephones. Notify the local telephone
company and provide the following information before
connecting the control panel to the telephone
network:
•
The particular line to which the control panel will
be connected
•
Make (Bosch Security Systems, Inc.), model
(D7212GV3), and serial number of the control
panel
•
FCC registration number:
US:ESVOT00BD9412GV3
•
Ringer equivalence for the control panel: 0.0B
Telephone Connections
25