The FMM-4-20 Analog Input Module allows the NFS2-3030 fire alarm control panel (FACP) to monitor industry-standard, linear-scale, 4–20 mA protocol sensors
The module converts the sensor output to communication protocol that can be interpreted by the FACP for monitoring and display.
There are numerous sensors available in the marketplace that communicate using a 4–20 mA output, including gas sensors, temperature sensors, air speed sensors, and more.
Features
• SEMS screws for easing wiring
• Panel controlled status LED (bi-color)
• Analog communications
• Rotary address switches
• Low standby current
• Mounts in standard 4" (10.16 cm) junction box
• FlashScan® operation
The FMM-4-20 Module includes numerous safeguards and protective features to ensure trouble-free operation.
The external power supply is isolated from the communication line. In addition, a 500 mA current limiter and a cutoff circuit protect the module’s electrical supply from short circuits. In the event of a short, the output voltage will cycle within safe limits until
the short is removed.
The output signal is sampled and filtered for transients and noise prior to passing the signal along to the FACP. If the current running through the sensing circuitry exceeds 25 mA, the output voltage will shut down and the short protection process will begin.
The module accepts both 3-wire (device sink) and 2-wire configurations.
The NFS2-3030 panel with compatible firmware supports up to five programmable thresholds for each FMM-4-20. As with all of Notifier’s intelligent modules, the FMM-4-20 Analog Input Module is rigorously designed and tested for electromagnetic compatibility and environmental reliability, in most cases exceeding industry standards.
The device is equipped with a panel-controlled LED for local status indication. The
standard SEMS terminals will accept wiring from 12 AWG to 18 AWG.
Documents
FAQ
Which panel supports the FMM-4-20?
The Notifier NFS2-3030 with compatible firmware, which supports up to five programmable thresholds for each FMM-4-20.
Does it need external power?
Yes. It uses a 12 to 28 VDC external supply (10 mA module standby at 24 VDC, plus up to 500 mA of sensor current), isolated from the communication line.
Which sensors can be connected?
Industry-standard linear 4-20 mA sensors such as gas, temperature and air speed sensors, in 2-wire or 3-wire (device sink) configurations.
Is it approved for gas detection?
Yes. It carries FM 6320 approval for gas detection, along with UL S6646 and CSFM 7300-0028:254.
