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D7212GV3 | Operation and Installation Guide | 8.0 On-Board Points

28 Bosch Security Systems, Inc. | 10/10 | F01U143079-03

8.0 On-Board Points

8.1 Terminals 11 to 22 Description

The control panel provides eight on-board points.

Each point functions independently and does not

interfere with the operation of the others. The control

panel monitors the sensor loops for normal, shorted,

or open conditions between an input terminal (11, 13,

14, 16, 17, 19, 20, or 22) and any of the point

common terminals (12, 15, 18, and 21). Programming

for the point determines how the control panel

responds to those conditions. Refer to the D7212GV3

Program Entry Guide (P/N: F01U170808) for point

programming options. The control panel also monitors

the sensor loops for ground fault conditions if S4 is

latched (ground fault detect enabled).

8.2 Point Sensor Loops

When wiring the on-board points (Figure 10), install

a 1 kΩ resistor at the far end of the sensor loop to

provide a reference for supervision. Dry-contact

sensing devices can be connected in series

(normally-closed) or in parallel (normally-open) to any

of these loops.

The number of normally-open and normally-closed

detection devices each sensor loop can supervise is

limited only by the resistance on the loop. The total

resistance for the wire length and contacts, minus the

end-of-line (EOL) resistor, must not exceed 100 Ω.

8.3 Point Parameters

The condition of on-board Points 1 to 8 is determined

by measuring the voltage across the point input

terminal and one of the common terminals. The

sensor loops must be connected and the 1 kΩ EOL

resistor in place.

Table 8: Point Parameters

Loop Voltage Range

Open Greater than 3.7 VDC, but less than 5.0 VDC.

Normal Greater than 2.0 VDC, but less than 3.0 VDC.

Shorted Greater than 0.0 VDC, but less than 1.3 VDC.

Figure 10: On-board Point Sensor Loop Wiring

1 k

1 - 100

maximum

2 - Point input terminal

3 - Common

4 - Normally-closed contacts (NC)

5 - Normally-open contacts (NO)

6- Combination: Normally-open contacts and

normally-closed contacts (NO/NC)

7 - P105F (Package of 8 EOL resistors) or

P105BL (Package of 8 UL Listed EOL

resistors) (P/N: 15093130-004)

8 - Brown

9 - Black

10 - Red

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 57 58

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