ENFORCER SA-025 - User Manual

The SECO-LARM ENFORCER SA-025 is a programmable timer module designed for a wide range of timed security and access control operations. Its applications include door unlock timing, siren or bell timer functions, and VCR timer control. The module features auto-sensing input voltage and DIP switches for easy programming, making installation straightforward.

Function Description:

The SA-025 operates as a versatile timer, allowing users to program relay output times from 1 second to 60 minutes. It can be triggered by applying or removing a positive (+) or negative (-) signal, or by simply powering up the unit. The relay can be programmed to activate either at the start or at the end of the timing cycle. Additionally, it can be set to activate for a fixed one second at the end of the timing cycle. The relay output can be configured to pulse (flash) or maintain a steady state. A built-in reset function allows for manual resetting of the timing cycle.

Important Technical Specifications:

Timing Range: 1 second to 60 minutes, adjustable via a round, black thumbwheel.
Triggering: Positive (+) trigger signal input (TRG), Negative (-) trigger signal input (requires a 1K ohm resistor, included), or Power-Up trigger.
Input Voltage: 12VDC to 24VDC (auto-sensing).
Current Draw: Less than 1mA (standby), 50mA (relay energized).
Relay Type: Form-C relay.
Contact Rating: 8A @ 120VAC/24VDC.
Indicators: LED to indicate when the relay is energized.
Dimensions: 2-7/8" x 2-1/2" (73 x 63 mm).
Programming: Configured via six DIP switches, no jumpers to cut.

Usage Features:

The SA-025 offers various operational modes controlled by its DIP switch settings:

Momentary Trigger, No Delay:
- DIP Switch Settings: 1-ON, 2-OFF, 3-ON, 4-Timer setting (ON or OFF), 5-OFF, 6-OFF.
- Action: When the TRG terminal is momentarily connected to (+), the relay activates immediately and stays on for the programmed time, then turns off regardless of the trigger's state. If the momentary trigger time is shorter than the timer's set time, the relay triggers only once. If the trigger time is longer, the relay activates a second time when the trigger is removed.
- N.O. vs. N.C. Output: For a timed door annunciator, connect a buzzer or chime to N.O. and COM outputs. For a closed-loop supervisory circuit, connect a dialer or transmitter to N.C. and COM outputs.
Momentary Trigger, No Delay (Swinger Eliminator):
- DIP Switch Settings: 1-ON, 2-OFF, 3-ON, 4-Timer setting (ON or OFF), 5-OFF, 6-ON.
- Action: When the TRG terminal is connected to (+), the relay activates immediately and stays on as long as the TRG terminal is connected. Once the TRG connection is broken, the relay remains activated for the programmed time, then turns off.
- Triggering by Powering Unit Up: If DIP switch #5 is ON, the unit triggers by being powered up. The relay remains active for the set time or until power is removed.
One-Time 1-Sec. Momentary Trigger, No Delay:
- DIP Switch Settings: 1-OFF, 2-OFF, 3-ON, 4-Timer setting (ON or OFF), 5-OFF, 6-ON.
- Action: The relay output activates for approximately 1 second when triggered.
Timed Output, Instant (One-Shot):
- DIP Switch Settings: 1-ON, 2-OFF, 3-OFF, 4-Timer setting (ON or OFF), 5-OFF, 6-OFF.
- Action: When the TRG terminal is momentarily connected to (+), the relay activates for the time set by the timer, then turns off. To re-trigger, the TRG must be disconnected from (+) for at least two seconds.
Timed Output, Delayed:
- DIP Switch Settings: 1-ON, 2-ON, 3-OFF, 4-Timer setting (ON or OFF), 5-OFF, 6-OFF.
- Action: When the TRG terminal is momentarily connected to (+), the SA-025 waits for the time set by the timer, then the relay activates for one second. To re-trigger, the TRG must be disconnected from (+) for at least two seconds.
- Triggering by Powering Unit Up: If DIP switch #5 is ON, the delay period starts when the SA-025 is powered up. At the end of the delay, the relay activates for one second.
Latched Output, Delayed:
- DIP Switch Settings: 1-ON, 2-ON, 3-ON, 4-Timer setting (ON or OFF), 5-OFF, 6-OFF.
- Action: When the TRG terminal is connected to (+) for the time set by the timer, the relay activates and remains activated. To reset, connect the TRG terminal momentarily to (+) again.
- Triggering by Powering Unit Up: If DIP switch #5 is ON, the delay period starts when the SA-025 is powered up. At the end of the delay, the relay latches on and remains on until the SA-025 is disconnected from power.
Pulsing or Flashing Output, Instant or Delay:
- 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.
- Action: When the TRG terminal is connected to (+) momentarily, the SA-025 waits for the time set by the timer (if #2 is ON) and then starts pulsing/flashing. The output lasts until the TRG terminal is disconnected from (+).
- Triggering by Powering Unit Up: If DIP switch #5 is ON, the output works the same, but triggered by powering up.
- Instant/Delay Start: If DIP switch #2 is ON, the SA-025 waits for the timer's set time after being triggered or powered up before pulsing/flashing. If DIP switch #2 is OFF, pulsing/flashing starts immediately.
- Relay Output Time: If DIP switch #1 is ON, the relay on and off times depend on the timer setting. If DIP switch #1 is OFF, the relay on time is fixed at 1 second, and the relay off time depends on the timer setting.

DIP Switch Settings (Programming) Summary:

Switch	Off	On
#1	Fixed 1 sec. Relay output time	Variable Relay output time
#2	Output at END of COUNTER	Output at START of COUNTER
#3	REPEAT timing cycle	SINGLE timing cycle
#4	Time in MINUTES	Timing in SECONDS
#5	Timing controlled by TRG input	Timing controlled by Power Up
#6	Counter begin at START of TRG	Counter begin at END of TRG

Maintenance Features:

The SA-025 is designed for reliable operation with no specific maintenance features mentioned beyond its robust construction and clear programming interface. The device's policy of continual development and improvement suggests ongoing efforts to enhance its performance and reliability. Users should ensure proper installation and testing of the time period once set.

Optional Negative Trigger or Closed-Circuit Trigger:

For applications requiring a closed-circuit or negative trigger, a 1K (1,000-ohm) resistor (included) must be installed as shown in the wiring diagrams.

SECO-LARM U.S.A., Inc. reserves the right to change specifications without notice due to its policy of continual development and improvement.

ENFORCER SA-025 Specifications

General

Brand	ENFORCER
Model	SA-025
Category	Control Unit
Language	English

ENFORCER SA-025 - User Manual

Summary

Features and Specifications

Timer Setting Range

Triggering Options

Relay Activation Timing

Relay Output Type

Reset Function

Relay Specifications

Indicator

Power Requirements

Current Draw

Board Dimensions

Programming Method

Wiring

TRG Terminal

Negative Trigger Input

Ground Input

Positive Input

Normally Open Output

Common Output

Normally Closed Output

DIP Switch Settings (Programming)

Mode Configuration

DIP Switch #1 Function

DIP Switch #2 Function

DIP Switch #3 Function

DIP Switch #4 Function

DIP Switch #5 Function

DIP Switch #6 Function

Setting the Timer

Timer Range Selection

DIP Switch #4 for Units

Thumbwheel Adjustment

Testing and Adjustment

Sample Installations for Common Timer Applications

Momentary Trigger, No Delay (Timed Annunciator)

Momentary Trigger, No Delay (Swinger Eliminator)

One-Time 1-Sec. Momentary Trigger, No Delay

Latched Output, Delayed

Pulse;Flash Output, Instant;Delay

Optional Negative or Closed-Circuit Trigger