Elmdene 7422-sfg-g3f Manual

Upon receiving the 7422-SFG-G3F, check the following:

Connect fire alarm zone output:

Set SW1-3 = ON, SW1-1 = OFF.

The "SFG" (Supervised Fault Generation) is a key feature. Terminals Fault Com, Fault NC, and Fault NO provide a volt-free relay. elmdene 7422-sfg-g3f manual

Before diving into the manual’s contents, it is crucial to understand what this unit is. The 7422-SFG-G3F is a 13.8V DC, 3A (continuous) linear power supply with a built-in battery charger.

Where to find the official manual: Elmdene's official website or the distributor (e.g., ADI, CEF). The manual part number is typically printed on the unit’s inner door.

The Elmdene 7422-SFG-G3F is a high-performance, monitored interface unit designed primarily for fire alarm systems. It belongs to Elmdene International Ltd’s renowned range of "Intelligent Interface" devices. The "SFG" designation typically refers to a Single Function Gateway or Signalling Fault Generator, while "G3F" indicates the third-generation firmware with enhanced fault filtering and diagnostics. Set SW1-3 = ON, SW1-1 = OFF

This unit acts as a bridge between a conventional fire alarm control panel (FACP) and auxiliary equipment such as:

Key features of the 7422-SFG-G3F:

Here are the top five failure scenarios and what the Elmdene manual advises: Before diving into the manual’s contents, it is

Q: Can I use this with a 12Ah battery? A (from manual): Yes, but only if the load is <2A average. The charge current (0.5A) will take over 24 hours to recharge a 12Ah battery. Also, the enclosure does not physically fit a 12Ah – you’d need an external battery box (EN 60950-1 compliant).

Q: Why is this called a “linear” supply? A: Unlike switch-mode supplies, linear units use a heavy iron transformer. The manual notes that linear supplies produce less electrical noise, making them superior for fire alarms and analogue access control readers.

Q: Is the Elmdene 7422-SFG-G3F compliant with the latest fire standards? A: Yes – it is certified to EN 62368-1 (the successor to EN 60950-1). For fire alarm use, you must enable the “Fire Override” input as detailed in Appendix A of the manual.