Azbil C1A single loop controller

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Azbil Corporation has announced the model C1A single loop controller, which the company says features high accuracy and fast response, and reduces the burden on personnel from installation through to maintenance.

The C1A calculates the voltage, current and resistance of the heater using voltage transformer (VT) and current transformer (CT) inputs. These values can be monitored on the front panel of the C1A or be used to output alarms if the preset threshold is exceeded. By monitoring the resistance along with the controlled temperature, the condition of a heater can be easily understood and unexpected heater burnout can be prevented.

Additionally, the Smart Loader Package for the product includes a PID simulator based on proprietary Azbil simulation technology. The PID simulator uses operating data to create mathematical models that reproduce characteristics of the object of control, allowing the user to simulate PID control on the PC and reduce adjustment time.

The C1A single loop controller features a high accuracy of ±0.1% of the reading (for thermocouple or Pt100 RTD) and a high-speed response with a sampling cycle of 25 ms. Its 4.5-digit numerical display shows values from −19999 to 19999 in units of 0.01°C and a bar graph of MV output % and other operational information can be displayed, making it easy to understand the status of control. It also offers a PLC link communication function for communication with a PLC without the need for programming.