TF-TFM420MA

TF-TFM420MA

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  • Module 2 inputs for 4-20mA devices
  • prealarm for each threshold
  • independent programming of thresholds
  • 4 operating criteria
  • 2 output status signaling tokens
  • Surface or DIN mounting with accessory (TFDIN)
  • Description
  • Specifications
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Addressable module of 2 inputs for 4-20mA supervised devices, individually identified by the System, occupies maximum 2 addresses. Programmable functions: prealarm for each threshold, independent programming of Prealarm and Alarm thresholds, 4 operating criteria: alarm, silence, reset and none, 2 status repeater outputs input and 2 status signaling LEDs.

Complete RSC® device management: programming, remote management and control of all operating parameters.

Surface or DIN mounting (TFDIN accessory).

EN 54-18: 2005/AC: 2007 - EN 54-17: 2005.

Approval certificate 1293-CPR–0491.


  • TECNOFIRE
  • Addressable module of 2 inputs for 4-20mA supervised devices
  • Fire-Speed Protocol
  • Line separator (IN / OUT) with double isolator
Device name TFM420MA
Description Module 2 entries 4-20mA
Communication protocol FIRE-SPEED
Address 2 rotary selectors
Busy addresses 1 address for each entry (máx.2)
Frequency of interrogation 2 levels
Communication WITNESS Signaling that can be excluded
Performance criteria 4
Pre-alarm threshold (mA) Programmable
Alarm threshold (mA) Programmable
Power From loop
Nominal voltage 24VDC
Operating voltage 18V...30VDC
Standby absorption 410μA @ 24V DC in absence of communication
Absorption in alarm 2,3mA @ 24V DC
Repeater output9,4V DC 6mA (protected)
Line separator Intelligent isolator (no device loss)
External power supply Range from 18 to 30V DC
Power output +SENS Max. absorption. total 500mA
Inputs 4-20 Max. current. sensor output 70mA
Input nominal impedance 152 ohm (to ground)
Exercise temperature -15°C...+70°C
Relative humidity 10%...93% (in absence of condensation)
Degree of protection IP40
Container ABS V0
Dimensions (L x W x D) 112 x 78 x 25mm
Weight 165g
Standards EN 54-18: 2005/AC: 2007 - EN 54-17: 2005
Certificate of homologation 1293-CPR-0491
Year of CE marking 15
Benefit statement number 012_TFM420MA
Certification body EVPU
  • Module 2 inputs for 4-20mA devices

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