Gefran 1650 1/8 DIN Dual Loop Controller

One or two PID control loops with two universal inputs configurable for thermocouples, thermoresistances and linear inputs. They may be used independently to manage two different forms of control or they may interact with cascade or ratio control. An optional third linear analogue input may be used to acquire signals such as remote setpoints or retroactive valve feedback, while also supplying the necessary potentiometer power supply. If the appropriate four-point calibration is performed in the field, the controller meets the requirements of standard AMS2750E and may be used in applications requiring the NADCAP directive.

There are 8 math function blocks to process analog variables and add/subtract/multiply/ divide, calculate average, root, logarithms and control functions in cascade, and ratio check.

Options are available with 8 digital inputs/outputs and 8 additional relay outputs to be managed via function blocks with state signals via dedicated LEDs on the LCD display.

• Operator interface with large LCD display and three configurable bar graph
• Scrolling diagnostics messages, configurable, in the selected language
• Easy, guided configuration, copy/ paste parameters even with power off
• Preventive maintenance with energy counters (kWh) and load switching
• 32 function block applications
• 8 math application blocks
• Timer, setpoint and algorithm programmer for controlling motorized valves
• Advanced tuning of control parameters
• Different password levels
• 3 universal inputs configurable for thermocouples, resistance thermometers, linear inputs
• AMS2750/CQI-9 conformant
• 2 PID control loop
• 2 setpoint programmers (128 steps in 16 programs)
• Relay, logic, isolated analog outputs
• Up to two CT inputs for interrupted load diagnostics
• RS485 serial communication in Modbus RTU
• Removable faceplate for immediate replacement
• Sampling time 60 ms
• Modbus RTU master/slave
• Modbus TCP slave
• Bridge Modbus RTU/TCP
• Webserver
• Weekly clock (RTC)