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Document No: LT0122 F3200 Installation & Programming Manual
Programming System Configuration
Issue 2.7 5 July 2001 Page 7-23
EXAMPLES OF LOGIC EQUATIONS (CONTINUED)
The logic may be entered using the zone range (ZR) option as follows:
R4 = Z9:12(1)A (i.e. alert on any of zones 9-12 in alarm)
V1 = (Z9:11(2)A.^Z13A)+Z12A (i.e. any two of zones 9-11 in alarm
with Zone 13 not in alarm, or Zone 12 in alarm).
R5 = V1 (evacuate tone)
T1[S20:0]=V1 (stretch timer, input delay 20 sec)
R6 = T1 (deluge)
The variable, V1 is used to start the timer rather than relay R5, so that if someone operates
R5 e.g. by the Test Relay function, there is no chance of it starting the time delay and
initiating the deluge (R6).
Example 3 - Use of Timers
Timers have been partly described already in Section 3.8. Timers 1 to 64 are "seconds
based" with a range of 0 to 250 seconds, and timers 65 to 72 are "minutes based" with a
range of 0 to 250 minutes.
A certain building has an outdoor yard with a very loud sounder. It is too loud to be left on
continuously. For any alarm in the premises it is desired to give one set of three 5 second
bursts on the sounder with 5 second delays between the bursts (Bells must operate as
standard).
Solution:
A relay (say R7) is assigned to switch the sounder. Three pulse timers (say T5, T6, T7) are
required.
T5[P0:5] = ALM
T6[P10:5] = ALM
T7[P20:5] = ALM
R7 = T5 + T6 + T7