Products > Automation > Controller > Calex Electronics

Multi-function controller
IP20, IP65, CE, CSA, UL, RoHS Calex Electronics

The PPT245 DIN-rail mounted controller provides a highly versatile alternative to panel-mounted instruments. It is one analogue input which is configurable for up to 18 different sensors/signals, two relay outputs, and a third output which can be configured either as a SSR logic signal or a 4 to 20 mA /0 to 10 V analogue signal for control or re-scalable retransmission of the process variable or setpoint.

The analogue output can also be used to adjust the emissivity setting on a PyroEpsilon non-contact temperature sensor - the value is adjusted between 0.2 and 1.0 using the lower (red) LED display and associated push buttons.

The built-in switching power supply has an extended range of 24 to 230 VAC/DC and does not require any jumper setting. The control modes are ON/OF, PID + Autotuning and Heating/Cooling PID with a neutral zone.

Software features include launch tuning, setpoint selection via digital input, optional manual reset of the output via the front keypad, latch-on function for sensor calibration (including load cells) and a programmable cycle of 3 steps. RS485 serial communication (Modbus RTU) and load monitoring function (Loop Break Alarm) with current transformer TA are also provided.

There is an optional Memory Card to copy all configuration parameters from one controller to another without powering them up.

If the PPT245 is ordered with a PyroEpsilon sensor, it is supplied pre-configured to display the 4 to 20 mA signal from the sensor over the appropriate temperature range. It is also pre-configured to allow the emissivity setting on the sensor to be adjusted over the range 0.2 to 1.0.

An optional IP65 enclosure is also available.