Elmdene 7422-sfg-g3f Manual Portable -

The Elmdene 7422-SFG-G3F is a Grade 3, high-security external sounder (bell box). This guide covers the essential wiring and setup procedures for security installers. 1. Core Terminal Connections

The internal PCB contains several terminals for power, triggers, and monitoring:

H+ / H– (Hold-Off): Permanent 12V DC supply from the control panel. H+ is positive, H– is negative.

R– (Siren Trigger): Connect to the panel's negative bell trigger. The sounder activates when this terminal is pulled to 0V (or +12V is removed, depending on jumper settings).

ST– (Strobe Trigger): Connect to the panel's negative strobe trigger. TR / TS (Tamper): TR (Tamper Return): Connect to the panel's tamper loop.

TS (Tamper Source): Connect to H– for a single unit installation.

ENG (Engineer Input): Used for quiet operation during maintenance.

FAULT: Volt-free contacts that open during a fault condition (e.g., battery or piezo failure). 2. Configurable Links (Jumpers)

You can adjust the unit's behavior by fitting or removing specific links on the board: R Hold & ST Hold:

Fitted: Requires a +12V signal to "hold off" (keep silent). Triggered by removing +12V.

Not Fitted: Triggered by a transition from +12V to 0V (negative trigger). SAB/SCB Mode:

SAB (Self-Actuating Bell): Uses its own battery to sound if the cable is cut.

SCB (Self-Contained Bell): Draws current only from the panel.

Comfort LED: Enables or disables the twin alternating flashing LEDs. 3. Commissioning Steps

Mounting: Secure the backplate to the wall. Ensure the wall tamper switch makes firm contact with the surface. elmdene 7422-sfg-g3f manual

Wiring: Route cables through the designated entry points. Ensure low voltage and power cables are separated.

Battery Connection: Connect the internal backup battery (BT+ and BT–). The sounder may beep briefly.

Power Up: Apply 12V power from the control panel. Verify the comfort LEDs begin to flash.

Test: Trigger the alarm from the control panel to confirm the siren and strobe operate correctly.

For further technical support, you can contact Elmdene Support or refer to the full Technical Installation Guide.

Are you connecting this to a specific control panel model (e.g., Honeywell, Texecom, or Risco)? [Ticket Question] Accenta Mini & Elmdene 7422 Wiring

Mastering Your Security: The Essential Guide to the Elmdene 7422 Siren

The Elmdene 7422-SFG-G3F is a staple in professional security setups, known for its Grade 3 reliability and robust performance. Whether you're a DIY enthusiast or a security pro, understanding the wiring and configuration is key to a functional alarm system. 1. Key Features & Specifications

Before diving into the manual specifics, here’s why the 7422 series is a go-to choice:

Grade 3 Security: Designed for high-security commercial and residential environments.

Weatherproof Construction: Rated for Environmental Class III (IP67), making it ideal for harsh outdoor conditions .

Twin Piezo Sounders: Delivers a piercing high-decibel output to deter intruders.

Tamper Protection: Features both lid and wall tamper detection to prevent interference. 2. Wiring Breakdown

Wiring a bell box can feel like solving a puzzle. According to community discussions on the Security Warehouse forum, the internal board terminals typically follow this logic: Description H+ / H- Permanent 12V supply from the control panel. BAT- / BAT+ The Elmdene 7422-SFG-G3F is a Grade 3, high-security

Connections for the internal backup battery (ensure these are snug). R- / ST- Trigger inputs for the Siren (R) and Strobe (ST). TR / TS

Tamper Return and Tamper Supply (connects to the panel's tamper circuit). ENG

Engineer mode terminal (used to silence the siren during maintenance). 3. Installation Best Practices

To get the most out of your unit, keep these tips from the Elmdene Technical Guide in mind:

Orientation Matters: If using matched pairs (like contacts), ensure the magnet and contact are aligned correctly to avoid false alarms .

Surface Preparation: If mounting on ferrous metal, always use a spacer under the device to maintain sensitivity .

Battery First: Always connect the internal battery after the main power is applied to the panel to avoid immediate siren activation. 4. Troubleshooting Common Issues

Faint Sound: Often caused by a depleted backup battery or a drop in voltage from the control panel.

Tamper Faults: Check that the wall tamper switch is fully compressed against the mounting surface.

Strobe Not Flashing: Verify the polarity on the ST- terminal; many strobes are polarity-sensitive.

For the most up-to-date documentation and specific SKU variations, visit the official Elmdene Downloads Page to access their full product manuals .

Are you integrating this with a specific control panel, like a Honeywell Galaxy or Texecom Premier? Elmdene Products - Technical Guide

If fitted to ferrous metal, the sensitivity may be affected and a spacer should always be fitted under the contact and magnet. Elmdene International Downloads | Elmdene International

Click here to download our latest product guide. Individual product instruction manuals can be found here. Elmdene International Elmdene Products - Technical Guide Periodic testing: Every 6 months, simulate input activation

If fitted to ferrous metal, the sensitivity may be affected and a spacer should always be fitted under the contact and magnet. Elmdene International Downloads | Elmdene International

Click here to download our latest product guide. Individual product instruction manuals can be found here. Elmdene International

10. Maintenance & Safety

What is the Elmdene 7422-SFG-G3F?

The Elmdene 7422-SFG-G3F is a 2 Amp Switched Mode Power Supply Unit (PSU) with an integrated battery charger. It is typically supplied in a durable metal enclosure (often a "Mini" cabinet style) designed to house the power board and a backup battery.

This unit is specifically designed for use in security applications, such as:

The "G3F" in the name typically refers to the generation of the board, often featuring enhanced fire safety compliance and protection features compared to older legacy units.

Complete Guide to the Elmdene 7422-SFG-G3F: Manual, Installation, and Troubleshooting

When dealing with critical security infrastructure, particularly in access control and fire alarm integration, the reliability of your power supply is non-negotiable. The Elmdene 7422-SFG-G3F is a market-leading, high-specification linear power supply and charger, widely used in the UK and Europe for its robust performance. However, to harness its full potential—and to ensure compliance with British Standards (BS EN 62368-1) and fire safety codes—you need the Elmdene 7422-SFG-G3F manual.

This article serves as an extended resource. While we cannot reprint the copyrighted manual in full, we provide a detailed breakdown of every section, essential wiring diagrams, configuration steps, and troubleshooting tips that the manual covers.

6.2 Latching Mode (SW1-2 = ON)

After input activation, the output relay remains energised even if the input signal returns to normal. To reset:

Important: Do not apply more than 30V DC to reset input.

4. Fusing

The board is typically protected by a mains fuse (located in the Live feed) and sometimes an output fuse or PTC resettable fuse for the DC side. Always check the rating printed on the PCB (Printed Circuit Board). A standard 2A unit usually contains a mains fuse rated around 500mA to 1A (check specific board label).

6.1 Automatic Reset Mode (SW1-2 = OFF)

When the input is activated (e.g., fire zone goes into alarm), the output relay energises immediately (or after SW1-4 delay). When the input restores, the output de-energises automatically.

Step 6: Fault Relay Wiring (SFG Feature)

The "SFG" (Supervised Fault Generation) is a key feature. Terminals Fault Com, Fault NC, and Fault NO provide a volt-free relay.

Problem 1: No DC Output (System Dead)

Symptoms: LEDs AC OK is ON, but DC OK is OFF. Solution:

  1. Disconnect the load (security panel).
  2. Measure voltage at the 0V/+12V terminals. If voltage returns (13.8V), the load had a short circuit.
  3. If still 0V, the PSU is likely in "Hiccup mode" due to internal failure. Replace the unit.