Gefran - F031020 MOTORIZED VALVE CONTROLLER, 800V, 1/16th DIN, THERMOCOUPLE INPUTS, RS485, MODBUS, 3 ALARMS, MICROPROCESSOR CONTROLLED

Motorised Valve Controller with Multiple Inputs, 800 V, 1/16th DIN

The Gefran 800v motorised valve controller has inputs for thermocouple, resistance thermometer, thermistor, linear inputs and potentiometers and outputs for relays, logic or analogue with Open/Close valve functions. Microprocessor controller for three-step motorized valves, 48x48 (1/16DIN).

Manufactured using SMT, the instrument provides a complete operator interface, protected by a Lexan membrane that ensures level IP65 faceplate protection. Featuring 4 keys, 2 green LED displays, each with 4 digits, 4 red indicating LED´s for the 4 logic or relay outputs.

This capable valve controller accepts many types of input sensor, including, thermocouple, resistance thermometer, thermistor, linear inputs, potentiometer, all with the possibility of custom linearisation that can be defined using the faceplate keys.

Ability to configure the 2 available isolated digital inputs for selection of up to 4 local set points - start, stop and reset the internal timer; Auto/Man, Loc/Rem functions; alarms memory reset; input hold function.

Every output function of this valve controller is configurable from the keypad; available functions are control output (open/close valve); alarm output; timer-controlled output; digital input repetition; retransmission of process value, set point, deviation, alarm setpoint or value read from digital communication.

A further isolated output (10 or 24Vdc, 30mA max.) is available for powering external transmitters or potentiometers. The serial communication interface RS485 (RS232C compatible) makes it possible to read or modify any parameter and to govern the instrument online (local/remote manual/automatic communication, internal timer control, direct control of outputs).

Protocols available: MODBUS RTU and CENCAL (Gefran), using these protocols it is possible to write to any of the instrument parameters.

Specific parameters are present for the valves control, i.e. the actuator stroke time, the minimum pulse time, the impulsive intervene threshold, the dead zone; also the control type is configurable with or without potentiometer feedback; with PD or PID algorithm.

To simplify installation and configuration even a programming kit is available for PC, which includes a menu driven configuration program for Windows and the necessary cable to connect the instrument

800V 1/16th DIN Motorised Valve Controller features

• Microprocessor controller for three-step motorized valves
• Outputs 2 control outputs: relay, logic or analogue with Open/Close valve function
• Inputs IN1, IN2 NPN; 10 V/24V transmitter supply
• Universal input configurable from the faceplate
• Acquisition of the input signal every 120 msec; resolution 30000 steps
• Two control outputs: relay, logic or analogue with Open/Close valve function
• 3 configurable alarms
• Auxiliary input for valve position potentiometer feedback
• Heater Break or short circuit probe alarm
• Self and Auto-tuning, Soft-start, Local/Remote setpoint, Auto/Man
• Multiset function, timer set ramp