Gefran 40T-72: Indicator with Alarm

Input type, alarm types and the function of the keys on the faceplate are software selectable. Retransmission output and digital communication facilitate easy interface with supervisory systems and SCADA applications.
Input configuration is software selectable. For other indicators choose from:

• 40A series: 20mAac, 50mAac 200mAac, 1Aac, 5Aac, 2Vac, 20Vac, 200Vac, 500Vac
• 40B series: strain gauge (autoranging between 1.5 to 3.3mV/V), Potentiometer
• 40F series: Frequency, inductive, capacitive (Namur, 2/3 wire), encoder, mircorswitch, 30-500Vac

Features:

• Choose from a wide range of software selectable inputs.
• Connect your input device (4-20mA transmitter, loadcell…) directly the 24V/10V on-board supply.
• Reset maximum/minimum register or "zero" the input via keys on the faceplate.
• Trigger pre-configured functions via remote switch.
• Use the "flash" function to read product and freeze during gaps on continuous production lines.
• For system testing during commissioning use the keys on the faceplate to activate the alarm outputs.

Description

Microprocessor based indicator in 72x36 format manufactured with SMT. The instruments have a lexan membrane faceplate (guaranteed to IP65) which has 3 keys, a 2, 3 / 4 digit display. 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 and correct input contact. No external shunt or adapter is required. A digital input (24Vdc/4mA) is available for resetting, hold, flash, peak handling or releasing latch.

The instruments have a maximum of 3 outputs that can be mechanical relays (5A/250V) or logic outputs (0 to 11Vdc). In alternative to output 3 a 4 to 20mA output is available (max. 150 Ohm) for retransmission of the measured input signal, or a digital input (24Vdc/4mA) can be provided which can be used for resetting, hold, flash, peak handling or releasing latch.

Finally, a triac can be fitted (as an alternative to the other two relay outputs) that can drive resistive loads up to a maximum of 2,5A at 220V. 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. A configurable personal software protection code (password protection) can be used to restrict the levels of editing and displaying the configuration parameters.