Bosch D9412GV4 Installation And Operation Manual page 37

D9412GV4/D7412GV4/D7212GV4 | Installation and Operation Guide | 8.0
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). The programming for the point
determines how the control panel responds to
those conditions. Refer to the
D9412GV4/D7412GV4/D7212GV4 Program Entry
Guide (P/N: F01U218312) 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
Not for use in Fire Applications.
When wiring the on-board points (Figure 12),
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.
Figure 12: On-board Point Sensor Loop Wiring
2
3
2
3
2
1 - 100 Ω 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)
* UL does not allow normally-closed loops for commercial fire applications.
Bosch Security Systems, Inc. | 3/12 | F01U266054-01
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 9: 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.
1
4
5
6
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
On-Board Points
7
1 k
8 10 10
9 9
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