Munich, Germany - The easy set-up function of the digital temperature controller DPC III makes it easier to put the heating circuit into operation within a very short time. The menu navigation makes the setting of the parameters very clear and safe. A special feature is the effective protection of the parameters by means of a multi-level password management which administrates the authorizations. The displayed parameters are freely selectable. Besides, it is possible to set diverse alarm functions, e.g. high alarm and low alarm can be set as absolute or relative alarms. For the system start-up, the function "manual control" or "soft start" can be used. The DPC III is universally applicable as ON/OFF (two-position controller) or as PID controller.
Digital temperature controller with On/Off or PID characteristics.
Temperature changes at the Pt 100 sensor are evaluated in the controller and are displayed as temperature values on the LED display. If a variation from the preset nominal value is detected, the device regulates the heating circuit of the trace heating in accordance with the pre-selected regulation characteristics (ON/OFF or PID). For the PID regulation, an auto-tuning function is available which analyzes the regulating section (heating circuit) and ascertains the PID regulating parameters. Further switch-points as over-temperature or under-temperature alarm messages are available at delivery. For service purposes at the heating circuit, the regulating output is turned off and temperature alarms can be optionally disabled. Additional monitoring functions of the regulating circuit and of the connected measuring value sensor increase the process safety. Via the programming interface, the device parameters can be read out with a programming key and transmitted to other controllers. Optionally available is a device version with RS485 interface and MODBUS protocol.
Like its predecessor version, the DPC III is integrated in a lock-in casing for TS 35 hat-profile rail. At the measuring input, a Pt 100 resistance thermometer and thermal elements can be connected. The controller is equipped with a load relay 16A for the two-position control, an alarm relay 8A, a logical voltage output for the PID control and two digital inputs. The voltage supply of the controller takes place via an integrated power supply unit with wide voltage range. The controller is completely downward compatible to the previous DPC controller.