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10.0
Relay Pulsing
Relay pulsing refers to a configuration where a relay turns on (closes) and then turns off
(opens) after a single switch press. An example of relay pulsing is the activation of a pre-
recorded digital message with the first switch press, and then the deactivation of the message
with the second switch press, simulating a maintained switch.
10.1
Relay Pulsing Sequence
The order of events in an example relay pulsing sequence is as follows:
1. A switch or input becomes active.
2. This activates the monitor zone
Input Switch
.
3. This activates the zone
Latch A
, which will remain latched until
Latch B Timer
starts
(see chapter 9).
4.
Latch A
activates
Latch A Timer
, which is linked to the output relay by advanced logic.
5.
Latch A Timer
activates the output relay while
Latch A Timer
is running. The timer is
usually set for a short period of time, such as 3 seconds, in order to simulate a pulse.
This is the first pulse.
6.
Latch A Timer
expires, which deactivates the output relay.
7. The switch is pressed again, or the input becomes inactive.
8. This activates the zone
Latch B
, which will remain latched until the switch is pressed
again or the input becomes active.
9.
Latch B
starts
Latch B Timer
, which is linked to the output relay by advanced logic.
10.
Latch B Timer
activates the output relay while it is running. The timer is usually set for a
short period of time, such as 3 seconds, in order to simulate a pulse. This is the second
pulse.
11.
Latch B Timer
expires, which deactivates the output relay.
10.2
Creating a Relay Pulsing Sequence
Follow this procedure to create the relay pulsing sequence described above.
Create a relay pulsing sequence
1. Create a monitor input zone. Tag the zone
Input Switch
.
2. Select the zone
Input Switch
, click the
Advanced Logic
tab, and then click
Edit
.
3. In
the
Advanced Logic Editor
, create an equation that contains only the input or switch
that will start the pulse.
4. Create two timers. Specify a time in seconds, for example 3 seconds. Tag them
Latch A
Timer
and
Latch B Timer
.
5. Create another monitor input zone. Tag this zone
Latch A
.
6. Select the zone
Latch A
, click the
Advanced Logic
tab, and then click
Edit
.
7. Create the following equation:
01-00-**-IZ-007 OR (01-00-**-IZ-011 AND NOT **-**-**-TM-021 EQU
