
INTRUSION&FIRE ALARM ADDRESSABLE 20-LOOP CONTROL DEVICE
46
where
loop
R
is the alarm loop resistance
ACD is the device metered resistance in analogue-digital con-
verter terms
This formula allows adequately calculating of loop resistance in range
from 0,1 to 50 kOhm.
5.5 Alarm loop arming and disarming
The device enables any loop arming or disarming by means of net
controller. This doesn’t concern the auxiliary loops of 6 and 12 types and
loops with “Non-Disarming” parameter being set on. Having received the
auxiliary loop arming or disarming command the device sends the mes-
sage about its current status. Plus the device responses by current status
message after having received of the disarming command deal with loop
with “Non-Disarming” parameter being set on.
The device enables the centralized control of partition arming and
disarming by means of the net controller.
In case of centralized partition control the user identifier codes are
recorded to the net controller database with appropriate authority levels.
The identifier having been read, its code is transmitted via interface.
In this process the reader LED is flashing with red and green with 5 Hz fre-
quency until the net controller answer has been received. It can take from
fractions of a second up to several seconds depending on the number of
devices connected to the RS-485 interface.
If the presented key has met the partition control authority level then
the reader display indicates the current partition status in accordance with
the Table 13. In case of repeated presenting of this key the partition is arm-
ing (if disarmed) or disarming (if armed). Each succeeding identifier pre-
senting causes the action which is opposite to previous. If the identifier
available control operations are restricted, for example, only arming is al-
lowed then the repeated and all following presenting cause only enabled
action (arming in our case) regardless of current partition status.
Table 13: Partition status light indicating
Partition status
Reader indicator mode
Light color
"Disarmed" Off -
"Armed" On
Yellow
(Green + Red)
Содержание SIGNAL-20P
Страница 1: ...SIGNAL 20P Intrusion Fire Alarm Addressable 20 Loop Control Device Installer s and User s manual ...
Страница 52: ...INTRUSION FIRE ALARM ADDRESSABLE 20 LOOP CONTROL DEVICE 52 Appendix C SIGNAL 20P connection diagram ...
Страница 53: ...APPENDIX D SIGNAL 20P TESTING CONNECTION DIAGRAM 53 Appendix D SIGNAL 20P testing connection diagram ...