Compact controllers for simple processes

23 October 2013 Computer/Embedded Technology

The latest offering from Jumo is a compact, easy-to-use process controller for simple applications. This new Quantrol device with basic functions operates using four buttons on the front that have a defined pressure point. The universal analog input is programmable for RTD temperature probes, thermocouples or current/voltage signals.

The desired value, actual value and all parameters are displayed on two seven-segment LED displays to one or two decimal places. Up to five relay outputs with a switching capacity of 3 A/230 V are available. The number of relay outputs depends on the format. The switch position of the relays is displayed using yellow LEDs; these can be assigned different alarm functions.

An analog output from 0 to 10 V or 0 - 20 mA can be used to control valves or SCR power controllers. Using the binary input, the Quantrol device settings and operation can be gradually locked, a ramp or timer can be activated, or self-optimisation can be initiated.

The series is available in the three DIN formats of 48 x 48 mm, 48 x 96 mm and 96 x 96 mm. Quantrol can be connected to host systems or devices using the RS-485 serial interface. Instead of operating the device from the front, the user can also program the controller via a setup program and USB interface.

The supply voltage may be between 110 and 240 V a.c. or 20 to 30 V a.c./d.c. All devices have cULus approval.

For more information contact ASSTech Process Electronics & Instrumentation, +27 (0)11 708 9200, [email protected], www.asstech.co.za

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