DKS 1803PC Owner's Manual download pdf (Page 11)

1.3 Monitor and Alarm Relay Operation

The Tracker board provides relay contacts for monitoring and alarm purposes. There are two different

modes in which the tracker board can be programmed to operate; MODE-1 and MODE-2. These

different modes of operation are set by switch 1 and determine the operation of the MONITOR (R1)

and ALARM (R2) relays on the tracker board. The mode of operation does not affect the OUTPUT

(R3) relay. This relay (R3) is only activated on command from the access system or from the request

to exit input on the tracker board.

1.3.1 Mode-1

In mode 1 (switch 1 OFF), the monitor relay is typically connected to a local alarm (bell, buzzer, light,

etc.) and the alarm relay is typically connected to the buildings alarm system or can activate some

other device (an auto-dialer for example) that will alert the proper personnel or authorities. A door ajar

switch (not supplied) is required to monitor the status of the door.

OPERATION MODE 1

When the access system has granted access, the output relay on the tracker board activates for its

programmed strike time (switches 7 & 8) and unlocks the door. If the door is still open (door ajar

switch closed) when the output relay deactivates, the door ajar timer starts. If the door has not closed

by the end of this time period (settable by switches 5 & 6), the alarm relay activates for 1 second and

the monitor relay activates for a time period settable by switches 3 & 4. At the same time, a door ajar

transaction is sent to the access system. When the door finally closes, a transaction is sent to the

access system and the system resets. If the reset alarm switch is activated, nothing happens. This

allows a door to be propped open when necessary. It is important to note that an alarm condition will

exist anytime the door is opened without having been activated by the output relay on the tracker

board. Because of this, any device other than the access system, that is used to grant access through

the door must be connected to the FREE EXIT input on the tracker board and not connected directly

to the door strike itself.

EXAMPLE: Assume the tracker board controls an entry door. The output relay strike time is set for 5

seconds, the door ajar timer is set for 30 seconds, and the monitor relay strike time is set for 1

minute. When access is granted, the output relay will activate for 5 seconds. After 5 seconds, the

door ajar timer will start if the door ajar switch is still closed (door still open). An alarm condition will

exist if this door remains open for more than 30 seconds. At this time, the alarm relay will activate for

1 second only, and the monitor relay will activate for its programmed strike time of 1 minute.

MODE-1 OPERATION SWITCH SETTINGS

Switch Description Setting Function

1 Mode OFF Sets board to operate in MODE-1 condition.

2 Spare OFF Not used in MODE-1 operation. Leave OFF.

3 & 4 Monitor relay strike

time

OFF

Monitor relay strike time after alarm condition occurs.

1 Minute

4 Minutes

8 Minutes

Continuous until door ajar condition clears.

5 & 6 Door ajar timer 5

OFF

Door ajar condition must be true before alarm condition occurs.

30 Seconds

1 Minute

3 Minutes

5 Minutes

7 & 8 Output relay strike

time

OFF

Output relay strike time after access is granted.

1 Second

3 Seconds

5 Seconds

30 Seconds

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 38 39

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DKS 1803PC Owner's Manual Page 11

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