Indicator/Alarm Unit


Indicator/Alarm Unit

Main features
  • Faceplate configurable input
  • Protected by a personal code
  • Configurable by a serial link
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Technical specifications


Microprocessor based indicator in both 96×48 (1/8 DIN) format manufactured with SMT.

The instrument have a lexan membrane faceplate (guaranteed to IP65) which has 3 keys, a 3 / 4 digit display format, and 3 indicating LED's for the output statuses.

The input signal can be selected from a wide range of sensors:

  • Thermocouples of type J, K, R, S, T, B, E, N, L GOST, U, G, D, C
  • Resistance thermometers Pt100, Pt100J (japanese standard) 2 / 3 wire
  • PTC and NTC themistors
  • Linear inputs 0 to 60/12 to 60mV, 0 to 20/4 to 20mA, 0 to 10/2 to 10/0 to 5/1 to 5/0 to 1/0, 2 to1V

The selection is made using the faceplate keys.

The instrument is available in version base, with two outputs to relé (2R), and expandible version.

The instruments have a maximum of 4 outputs that can be mechanical relays (5A,250Vac/30Vdc cosφ=1) or logic outputs (0 to 11Vdc).

A digital input (24Vdc/5mA) is available (for resetting, hold, flash, peak handling or releasing latch) and one output of 0…10V, 0/4 to 20mA (max. 500) is available for retranmitting the measured input signal.

The retransmission output, the digital input and the third output are available contemporaneously.

The serial communication option (available in RS485 standard) allows connection to supervision systems and PLCs with two protocols: GEFRAN CENCAL and MODBUS RTU.

Finally, a triac can be fitted (as an alternative to the output 1) to drive resistive loads up to a maximum of 1A at 240V.

The programming of the instrument is made easy by grouping the parameters in function blocks (CFG for the alarm hysteresis, Inp for the inputs, Out for the outputs…) and by a simplified data entry menu.

The configuration can be simplified even further using the PC programming kit made up of a connection cable and a menu guide program that runs under Windows (see technical data GF_eXpress).

A configurable personal software protection code (password protection) can be used to restrict the levels of editing and displaying the configuration parameters.

  • Faceplate configurable input
  • Protected by a personal code
  • Configurable by a serial link
  • Transmitter power supply incorporated
  • Custom thermocouple linearisation available
  • Internal linearisation for engineering units
  • Labels provided for the more common physical units
  • Sampling time and trip intervention programmable between 15 and 120msec with resolution between 4000 and 16000 steps
  • Retransmission of the measured variable signal
  • 4 trip points completely configurable from keyboard
  • RS485 optically isolated serial line
  • Rapid configuration from PC with GF_eXpress package
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