Seco-Larm SA-025Q Manual

Seco-Larm Ikke kategoriseret SA-025Q

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- 1 -

The SA-025Q Programmable Timer Module is suitable for a wide range of timed security

and access control operations, such as door unlock timing, siren or bell timer, VCR timer,

and so on. Auto-sensing of input voltage and DIP switches for programming make

installation easy.

Features / Specifications:

• Timer can be set from 1 second to 60 minutes

• Can be triggered via a N.O. positive (+) trigger input signal or a N.C. negative (-) trigger

device or by powering up the unit

• Relay can be programmed to activate at the start or at the end of the timing cycle

• Relay can also be set to activate for one second at the end of the timing cycle

• Relay can be programmed to pulse (flash) or be steady on

• Built-in reset function to manually reset timing cycle

• Form-C relay, contacts rated 8A @ 120VAC/24VDC

• LED indicates relay is energized

• 12VDC/24VDC operation (auto sensing)

• Current draw – Less than 1mA (standby) or 50mA (relay energized)

• Board measures 2-7/8” x 2-1/2” (73 x 63 mm)

• Functions programmed via DIP switches – no jumpers to cut

Fig. 1 – DIP switch settings

Switch

Off

Fixed 1 sec. Relay

output time

Relay energizes at start

of timing cycle

REPEAT timing cycle

Time in MINUTES

Timing controlled by

TRG input

Counter begin at START

of TRG

Variable Relay output

time

Relay energizes at

end of timing cycle

SINGLE timing cycle

Timing in SECONDS

Timing controlled by

Power Up

Counter begin at END

of TRG

Wiring:

•TRG – N.O. Positive (+) trigger input

signal or

– N.C. Negative (

) trigger input

signal

(1K ohm resistor

required - included)

•(-) – Ground input

•(+) – +12VDC to +24VDC input

•NO – Relay output (normally open)

•COM – Relay output (common)

•NC – Relay output (normally closed)

DIP Switch Settings (Programming):

The SA-025Q is programmed via a

series of six DIP switches which can be

turned on or off. See fig. 1.

b. Action – If the TRG terminal is connected to (+) for the time set by the timer, the

relay activates and remains activated. To reset the latched relay, connect the TRG

terminal momentarily to (+) again.

c. Triggering by powering unit up – If DIP switch #5 is set to ON, the delay period set

by the timer starts when the SA-025Q is powered up. At the end of the delay period,

the relay latches on and remains on until the SA-025Q is disconnected from power.

5. Pulsing or Flashing Output, instant or delay (Fig. 6):

a. DIP switch settings:

1 – Relay output mode, see below

2 – Instant/delay start, see below

3 – OFF

4 – Timer setting (ON or OFF)

5 – OFF

6 – OFF

b. Action – If the TRG terminal is connected to (+) momentarily, the SA-025Q waits for

the time set by the timer, and then starts pulsing/flashing. The pulse/flash output lasts

until the TRG terminal is disconnected from (+).

c. Triggering by powering unit up – If DIP switch #5 is set to ON, the output works the

same, but instead of triggering via the TRG terminal, the SA-025Q is triggered by

being powering up.

d. Instant/delay start – If DIP switch #2 is set to ON, the SA-025Q waits for the time set

by the timer after triggered or powered up, and then starts pulsing/flashing. If DIP

switch #2 is set to OFF, the SA-025Q starts pulsing/flashing as soon as it is triggered

or powered up.

e. Relay output time – If DIP switch #1 is set to ON, the relay on and off time depends

on how the timer is set. If DIP switch #1 is set to OFF, the relay on time is fixed at

about 1 second, and the relay off time depends on how the timer is set.

6. Optional Negative Trigger or Closed-Circuit Trigger (Fig. 7):

If a closed-circuit negative trigger is required, it is necessary to install a 1K

(1,000-ohm) resistor as shown (included).

- 2 -

Setting the Timer:

The relay output time can be programmed for either 1 to 60 seconds, or 1 to 60 minutes,

using the round, black thumbwheel:

1. Determine and set DIP switch #4 according to whether the timing should be measured in

seconds or minutes (see DIP Switch Settings above).

2. Turn the thumbwheel on the SA-025Q clockwise to increase time, and counter-clockwise to

decrease time.

3. Test the time, and make adjustments as needed.

NOTE – You should carefully test the time period once it is set.

Sample Installations for Common Timer Applications:

NOTE – The following only represents a few of the many possible ways to use this Timer

Module. For your specific application, it may be necessary to experiment with the DIP

switch settings.

1. Momentary trigger, no delay (for timed annunciator or supervisory circuit) (Fig. 2):

a. DIP switch settings:

1 – ON

2 – OFF

3 – ON

4 – Timer setting (ON or OFF)

b. Action – If the TRG terminal is connected to (+) momentarily, the relay output

immediately turns on. The output stays on for the time set by the timer, after which it

turns off regardless of whether the trigger is connected or disconnected.

NOTE – If the momentary trigger time is less than the time set by the timer, the relay

output is triggered only once. If the trigger time is longer than the timer time, the relay

will be activated a second time when the trigger is removed.

c. N.O. vs. N.C. output – For a timed door annunciator, connect a buzzer or chime to

the N.O. and COM outputs. For a closed-loop supervisory circuit, connect a dialer or

transmitter to the N.C. and COM outputs.

2. Momentary trigger, no delay (for swinger eliminator) (Fig. 3):

a. DIP switch settings:

1 – ON

2 – OFF

3 – ON

4 – Timer setting (ON or OFF)

b. Action – If the TRG terminal is connected to (+) momentarily, the relay output

immediately turns on, and stays on for as long as the TRG terminal is connected to

(+). Once the TRG connection is broken, the relay output remain activated for as long

as the time period set by the timer, and then turns off.

c. Triggering by powering unit up – If DIP switch #5 is set to ON, the output works the

same, but instead of triggering via the TRG terminal, the SA-025Q is triggered by

powering it up. Once powered up, the relay remains activated for the time set by the

timer, or until power is removed, whichever comes first.

3. One-time 1-sec. momentary trigger, no delay (Fig. 4):

a. DIP switch settings:

5 – OFF

6 – OFF

5 – OFF

6 – ON

1 – OFF

2 – OFF

3 – ON

4 – Timer setting (ON or OFF)

5 – OFF

6 – ON

- 3 -

Fig. 2 – Momentary trigger, no delay

Fig. 7 – Optional negative or

closed-circuit trigger

Fig. 6 – Pulse/flash o/p, instant/delay

Fig. 5 – Latched output, delayedFig. 4 – 1-time mom. trigger, no delay

Fig. 3 – Momentary trigger, no delay

*(1K ohm resistor included)

DIP #1 setting Function

OFF 1-sec. momentary relay output

ON (DIP #3 ON) Relay output latches on

ON (DIP #3 OFF) Relay output equals 1 sec.

b. Action – If the TRG terminal is connected to (+) momentarily, the relay output

immediately activates for about one second. To reset the SA-025Q, the TRG must be

disconnected from (+) for at least two seconds. The timer has no effect.

c. Triggering by powering unit up – If DIP switch #5 is set to ON, the output works the

same, but instead of triggering via the TRG terminal, the SA-025Q is triggered by

being powered up.

4. Latched Output, delayed (Fig. 5):

a. DIP switch settings:

1 – ON

2 – ON

3 – ON

4 – Timer setting (ON or OFF)

5 – OFF

6 – OFF

Produkt Specifikationer

Mærke:	Seco-Larm
Kategori:	Ikke kategoriseret
Model:	SA-025Q

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