Tyco F3200 manual Examples of Logic Equations Example 1 Use of Variables

F3200 Installation & Programming Manual	Document No: LT0122
Programming System Configuration

7.4.4EXAMPLES OF LOGIC EQUATIONS Example 1 - Use of Variables

Assume that two relays are required with similar logic equations, as follows:

R1 = (Z1A + Z2A + Z9A + Z10A) .^ Z3A

R9 = (Z1A + Z2A + Z9A + Z10A) .^ Z11A

Rather than enter both equations in full, it is easier to assign a variable to the common section of logic and enter three equations as follows:

V2 = Z1A + Z2A + Z9A + Z10A

R1 = V2.^Z3A

R9 = V2.^Z11A

Example 2 - Use of Zone Range and Timers In a Deluge System

A manned area in a building has a high risk of fire but some chance of false operation of a smoke detector. The area is protected by a solenoid operated deluge system. It is considered best to run three separate smoke detector circuits through the area, and have a "voting" system. Also, there is to be one circuit with heat detectors and mcps, and a circuit of different coloured mcps which function as "Inhibit Deluge".

The logic specified by the consultants is that any smoke, heat or mcp operation sounds an Alert warning tone in the area.

If any 2 of the 3 smoke circuits operate, an Evacuate tone is sounded, and 20 seconds later the deluge is to operate if no one has operated "Inhibit".

If an mcp or heat detector operates, the Evacuate tone and timer are to start and "Inhibit" must not prevent the deluge from operating.

Solution:

By assigning the smoke and thermal circuits consecutively, the zone range operand can be used. Inhibit is assigned a separate zone which is configured as non-mapped to MAF, ANC1, ANC2 and BELLS.

The "zones" could be assigned as follows:

Zones Z9, Z10, Z11 are the smoke circuits

Zone Z12 is the heat/mcp circuit

Zone Z13 is the "Inhibit" circuit

Relay R4 switches the "Zone Alert"

Relay R5 switches the "Zone Evacuate"

Relay R6 switches the "Zone Deluge" solenoid.

The appropriate names for zones and relays would be entered as text. For thermal detectors with electronic bases and all mcps "shorting" the circuits, the AZCs would be configured with:

AZC 12 as "Heat", with B1 = Alarm;

AZC 13 as "Manual" with B1 = Instant Alarm.

Page 7-22 5 July 2001 Issue 2.7