This product is part of the Modicon M171/M172 range, an offer of programmable controllers for HVAC solutions. This programmable controller offers 2 discrete inputs with sink or source (positive/negative) up to 2kHz discrete logic. It is a module with discrete input voltage of 24V AC/DC, 5mA. It offers 2 configurable by pair analogue input. It features 3 LEDs for programmable and 1 LED for power signaling. It is an IP20 rated product. Its dimensions are 72mm (width) x 60.5mm (depth) x 110mm (height). It weighs 0.2kg. The main application of this module is HVAC control. This product is certified by CE, RCM, EAC, CSA and CURus. It meets IEC 61000-4-2, EN 60068-2-6 Fc, IEC 61000-4-3, IEC 61000-4-5, EN 60730-1 and EN 60730-2-9 standards. It is suitable for DIN rail mount and panel mounting with accessory. Modicon M171/M172 benefits maximize profitability and energy efficiency by using scalable automation control with the Modicon M171/M172. Modicon M171/M172 logic controllers and intuitive software EcoStruxure Machine Expert - HVAC are designed for maximizing profitability and energy efficiency. Specifications Main Range of Product Modicon M171/M172 Product or Component Type Programmable controllers Product Specific Application HVAC variant Programmable Total inputs/outputs 7 Discrete input number 2 Discrete output number 1 relay outputs SPDT with independent common 2 relay outputs SPST with same common Discrete output current 3 A relay SPST 3 A relay SPDT Analogue input number 2 configurable by pair Complementary Number of port 1 CAN port - screw terminal block 1 USB type A - USB type A female 1 USB type mini B - USB device port Mini-B 2 RS485 - screw terminal block Modbus serial link or BACnet MS/TP) 1 Ethernet - RJ45 Modbus TCP and BACnet IP with webserver) Input/output number 2 digital input 2 analog input 3 digital output Discrete input logic Sink or source (positive/negative) up to 2 kHz Discrete input voltage 24 V AC/DC Discrete input current 5 mA AC/DC Input impedance 20 kOhm Analogue input type NTC NK103 Beta 3977 temperature probe - 40...137 °C 0.1 °C 10 kOhm at 25 °C) NTC 103AT-2 Beta 3435 temperature probe - 50...110 °C 0.1 °C 10 kOhm at 25 °C) voltage 0...10 V 1 digit > 10 kOhm voltage 0...5 V 1 digit > 20 kOhm absolute or ratiometric) impedance 0...1500 hOhm 1 hOhm 10 kOhm impedance 0...300 daOhm 1 daOhm 1500 Ohm PTC temperature probe - 55...150 °C 0.1 °C 1500 Ohm Pt 1000 temperature probe - 200...850 °C 0.1 °C 1500 Ohm current 0...20 mA/4...20 mA 1 digit < 150 Ohm direct input 10 kOhm Dry contact) Measurement accuracy 0...20 mA 0...4 mA +/- 2 % of full scale +/- 1 digit 0...20 mA 4...20 mA +/- 1 % of full scale +/- 1 digit 4...20 mA +/- 1 % of full scale +/- 1 digit 0...10 V +/- 1 % of full scale +/- 1 digit 0...5 V +/- 1 % of full scale +/- 1 digit DaOhm 0...300 daOhm +/- 2.5 daOhm NTC NK103 Beta 3977 - 40...+110 °C +/- 1 °C NTC NK103 Beta 3977 110...137 °C +/- 1.9 °C NTC 103AT-2 Beta 3435 - 50…110 °C +/- 1 °C PTC - 55...155 °C +/- 1.1 °C Pt 1000 - 200...-100 °C +/- 10 °C Pt 1000 - 100...-50 °C +/- 2.5 °C Pt 1000 - 50...100 °C +/- 1.5 °C Pt 1000 100…400 °C +/- 2.4 °C Pt 1000 400...850 °C +/- 10 °C HOhm 0...750 hOhm +/- 8.5 hOhm HOhm 750 hOhm...1500 hOhm +/- 24 hOhm Sensor power supply 5 V DC 40 mA supplied by the controller 24 V DC 100 mA supplied by the controller [Us] rated supply voltage 24 V +/- 10 % AC 20...38 V DC Power consumption in W 10 W 24 V AC/DC Realtime clock Built-in clock, clock drift <= 30 s/month at -4…140 °F (-20…60 °C) Display type Backlit LCD - 128 x 64 pixels Overvoltage category II Local signalling For programmable 1 LED (red) for programmable 1 LED (yellow) for programmable 1 LED (green) for power 1 LED (green) Mounting Support DIN rail Panel mounting with accessory Width 2.83 in (72 mm) Height 4.33 in (110 mm) Depth 2.38 in (60.5 mm) Net Weight 0.44 lb(US) (0.2 kg)