DMP Electronics LT-0229 (5 97) Powered Zone for 2-WireSmoke Detectors, Installation, Condition

Installation

10.2Operational parameters

Each burglary protection zone detects three conditions: open, normal, and short. The parameters for each are listed below:

Condition	Resistance on zone	Voltage on right terminal
Open	over 1300 ohms	over 2.0 VDC
Normal	600 to 1300 ohms	1.2 to 2.0 VDC
Short	under 600 ohms	under 1.2 VDC

	1K		1K		1K
NORMALLY CLOSED CONTACTS		NORMALLY OPEN CONTACTS
				COMBINATION: NORMALLY OPEN AND
				NORMALLY CLOSED CONTACTS

Figure 3: Protection zone contact wiring

10.3Zone response time

A condition must be present on a zone for 500 milliseconds before it's detected by the XR10/XR20 panel. Ensure detection devices used on the protection zones are rated for use with this delay.

10.4Keyswitch arming zone

Momentary keyswitches

You can use a momentary keyswitch on a zone programmed as an Arming type for use in arming and disarming the system without a code.

How it works

When the Arming zone is placed into a shorted codition from a normal condition, the panel disarms any areas that are armed. If all areas are disarmed, the panel arms all areas.

If the Arming zone changes from normal to open while any area is armed, an alarm is indicated. If all areas are disarmed, only a trouble is indicated.

Powered Zone for 2-Wire Smoke Detectors

11.1Terminals 25 and 26

A resettable 2-wire Class B powered zone is provided on terminals 25 (positive) and 26 (negative) of the panel. For programming purposes, the zone number is 10. The zone uses a Model 309, 3.3k Ω EOL resistor (provided with the panel) and has an operating range of 8.8 to 14.2 VDC.

Power is dropped from zone 10 any time a Sensor Reset is performed on the panel. Whenever non-Fire and non-Supervisory zone types are used on zone 10, make the appropriate adjustments to the zone's Armed Action to prevent false alarms from occurring.

The UL compatibility identifier is: A.

Manufacturer	Model	Detector	Base	Base	# of
		I D		I D	Detectors
Detection Systems	DS282	B	None	N/A	10
Detection Systems	DS282TH	B	None	N/A	10
Detection Systems	DS250	B	MB2W	A	10
Detection Systems	DS250TH	B	MB2W, MB2WL	A	10
Detection Systems	DS250HD	B	MB2W, MB2WL	A	10
Sentrol/ESL	429AT	S09A	None	N/A	12
DMP/Hochiki	SLK-835	HD-5	HSB-200, HSB-200N	HB-55	7
DMP/Hochiki	SLK-835H	HD-5	HSB-200, HSB-200N	HB-55	7
Hochiki	SLK-12	HD-4	HSB-12-1, HSB-12-1N	HB-80	20

Figure 4: Compatible 2-wire smoke detectors

XR10/XR20 Installation Guide

2841 E. Industrial Drive Springfield, MO 65802-6310 800-641-4282

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