DETAILED DESCRIPTION

DRR245
The PID controller DRR245 distinguishes itself from the range of rail-mounted controllers due to its flexibility and configurability that are summed up in a single order code.
The input can be programmed for temperature sensors, resistance thermometers and thermocouples, pressure transmitters, humidity and flow sensors. 
The controller's outputs can be selected as command/multiple alarm modes/analogue retransmission. Serial communication is in RS485 with Modbus RTU/Slave protocol. Useful extended range power supply from 24 to 230V AC/DC with galvanic isolation from the network.
In addition to its function as a PID hot-cold controller, the DRR245 controller also serves as a signal convertor thanks to its galvanically isolated analogue output, which can be used in process retransmission/setpoint modes.

Specifications

• Power supply: 24..230 V AC / DC 
• Display: 4 digits 0,4" green + 4 digits 0,3" red
• Sealing: IP65 (front panel), IP 20 (box & terminal bloks)
• Dimension: 4 modules
• Tuning: manual or automatic
• Analog input 1: Res. 16 bit, selectable for TC type K, S, R, J, (automatic compensation of the cold junction 0..50 °C, ± 0,2% F.S. ± 1 Digit F.S.), thermoresistance PT100, PT500, PT1000, Ni100, PTC1K. NTC10K, (ß 3435K), process signals 0..10V(54000 points), 0/4..20mA (40000points), 0..40mV (16000 points), potentiometer 6KΩ, 150 KΩ (50000 points)
• Digital input 1: PNP, 1/4 setpoint selection, Hold, Run Auto/man regulation, tuning start, pre-programmed cycle start
• Current transformer input 1: for 50 mA (sampling time 100 ms)  
• Outputs: 2 relays, 1 SSR, selection 4 - 20 mA or 0 - 10 VDC for command or retransmission and 1 auxiliary12 VDC - 30 mA for external sensor supply
• Control algorithms: ON - OFF with hysteresis, P., P.I., P.I.D., P.D. time proportioned
• Auto/Man function: Output percentage command also with automatic change in case of sensor failure
• Soft-Start: Rising gradient expressed as Degrees / Hour
• Alarm modes: Absolute / Threshold, band, High / Low deviation. Loop Break Alarm function