On-Board Points; Description Terminals; Point Sensor Loops; Point Parameters - Radionics D9412G Operation And Installation Manual

7.0

On-board Points

7.1

Description Terminals

The panel provides eight on-board points. Each point functions independently and does not interfere with the
operation of the others. The 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 panel responds to those conditions. See the D9412G/D7412G
Program Entry Guide for point programming options. The panel also monitors the sensor loops for ground fault
conditions if S4 is latched (ground fault detect enabled).
7.2

Point Sensor Loops

When wiring the on-board points (see 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) and/or in
parallel (normally-open) to any of these loops.
The number of normally-open and/or normally-closed detection devices each sensor loop can supervise is limited
only by the resistance on the loop. The total resistance for wire length and contacts, minus the end-of-line resistor,
must not exceed 100 ohms.
7.3

Point Parameters

The condition of on-board points 1 to 8 can be 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 end of line resistor
in place.
Open Loop
Normal Loop
Shorted Loop
7.4

Point Response Time

The panel scans both on-board and off-board point sensor loops every 300 milliseconds. The Debounce Count
program item in the Point Assignment section determines point response time by setting the number of scans that
a point must be faulted before the panel initiates an alarm.
The debounce count can range from 2 to 15. Therefore point response time ranges from 600 milliseconds to 4.5
seconds. The Radionics default for Debounce Count is 2.
Increasing debounce may cause missed alarms: If you increase the Debounce Count, detection devices
may go into alarm and reset without exceeding the point response time.
Radionics recommends a debounce count of 2 for all points except for Interior Follower points, which should be
programmed as a 3. In addition to this, door points that are connected to a D9210B Access Control Interface
Module should be programmed with a debounce of 4.
Point Input
Point Input
Point Input
Combination: Normally-Open Contacts and Normally-Closed Contacts (NONC)
© 2002 Radionics
= Greater than 3.7 VDC, but less than 5.0 VDC.
= Greater than 2.0 VDC, but less than 3.0 VDC.
= Greater than 0.0 VDC, but less than 1.3 VDC.
100 Ohms maximum
Terminal
Common
Normally-Closed Contacts (NCC)
Terminal
Common
Normally-Open Contacts (NOC)
Terminal
Common

Figure 12: On-board Point Sensor Loop Wiring

D9412G/D7412G Operation & Installation Guide
Page 37
D9412G/D7412G
On-board Points
1 kΩ
Brown
Red
Black
Radionics Model
D105F or D105BL
(UL Listed Burglar
Applications)
End-Of-Line
Resistor
43488D