EUROTHERM 'S 3216 one-sixteenth DIN controller can now be provided with single and dual analogue outputs for heat, cool or process retransmission. Interchangeable cards allow it to be fitted with any combination of I/O to suit the application.
It can be fitted with up to three outputs including relay, logic and analogue outputs. The logic output can also be software configured as a digital input if required. A further digital input for alarm acknowledgement or program start can also be fitted as part of the plug-in communications slot. The optional plug-in serial communications options of Modbus RS232 or RS485 allow interfacing to higher level systems or other master control systems. An additional digital input and a current transformer input are also provided for monitoring other process inputs.
Scrolling safety messages deliver plain-language messages to advise operators and engineers of exactly what is happening to the process. The three-colour LCD display provides clear indication of process variables. The upper display shows the input process value while the lower display can be set to show a range of parameters including setpoint, program time remaining and current.
An optional setpoint profiling program is also available, allowing basic heating control systems to economically incorporate a heating profile. The program feature also allows for digital outputs which can be linked to relays to advise of end of program status or run mode. On starting the program the user can select a smart start by starting at the current ambient temperature. The program end can be set for dwell or reset.
The 3216 also includes the Recipe feature, allowing operators to recall one of the five stored calibrations, and instantly reconfigure up to 38 stored configuration settings. The recipe feature provides maintenance staff with a simple means of returning the controller to a known default state should the controller configuration ever be altered by an operator. For a number of industries, such as
In the food industry one machine is often used for a number of processes. The recipe function provides a fast means of reconfiguring the controller for a new product process and setpoint program, reducing changeover time and improving efficiency.
Applications include simple heating and cooling, small ovens, chillers, sterilisers, trace heating, heat sealing and injection moulding.