{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TM172PDG18S","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"TM172PDG18S","canonicalUrl":"https://aoctrl.com/schneider/TM172PDG18S","factsUrl":"https://aoctrl.com/api/mcp/products/TM172PDG18S","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Modicon M172 programmable controller, TM172PDG18S, 18 I/O, HVAC-specific, 24 V AC/DC, backlit LCD 128x64, Ethernet with Modbus TCP and BACnet IP.","salesMarkdown":"## Controller at a glance – HVAC config, 18 I/O, multi-protocol The TM172PDG18S is a Modicon M171/M172 programmable controller built for HVAC applications. It runs on 24 V AC/DC (20...38 V DC) and packs 18 I/O total: 8 analog inputs configurable by pair, 2 analog outputs (0...10 V or 4...20 mA or PWM at 2 kHz), 6 digital outputs (mix of relay SPST/SPDT and isolated SSR), and 2 digital inputs (sink/source up to 2 kHz). Communication is handled through one Ethernet port (Modbus TCP and BACnet IP with webserver), two RS485 screw terminals (Modbus serial or BACnet MS/TP), one CAN port, and USB (Type A and Mini-B). A backlit 128x64 pixel LCD provides local display without a separate HMI. ## Mounting and environmental – panel or DIN rail, IP20 The controller measures 4.3 in high x 2.8 in wide x 2.4 in deep (110 x 72 x 60.5 mm). It can be panel-mounted or DIN-rail mounted with an accessory kit. IP20 enclosure, pollution degree 2, overvoltage category II. Ambient operating range -4...140 °F (-20...60 °C), storage -22...158 °F (-30...70 °C).","metaTitle":"Schneider TM172PDG18S Modicon M172 Controller, 18 I/O","metaDescription":"HVAC programmable controller with 8 analog inputs, 2 analog outputs, 6 digital outputs, Ethernet BACnet IP, Modbus TCP. Active production. Specs: 24 V AC/DC, 128x64 LCD. Order TM17","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Depth":"2.4 in (60.5 mm)","Width":"2.8 in (72 mm)","Height":"4.3 in (110 mm)","Variant":"Programmable","Category":"US1PC1222537","Standards":"EN 60730-2-9 EN 60068-2-27 IEC 61000-4-3 UL 60730-1 IEC 61000-4-2 CAN/CSA-E60730-1 EN 60068-2-6 Fc IEC 61000-4-11 IEC 61000-4-5 IEC 61000-4-6 CSA E60730-2-9 UL 60730-2-9 EN 60730-1 IEC 61000-4-4 UL94 (material V0)","Directives":"2014/35/EU - low voltage directive 2014/30/EU - electromagnetic compatibility","Display type":"Backlit LCD - 128 x 64 pixels","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)","Realtime clock":"Built-in clock, clock drift <= 30 s/month at -4...140 °F (-20...60 °C)","Input impedance":"10 kOhm","lifecycle_stage":"current","Local signalling":"1 LED (red) for programmable 1 LED (yellow) for programmable 1 LED (green) for programmable 1 LED (green) for power","Mounting Support":"Panel mounting with accessory DIN rail","Pollution degree":"2","Range of Product":"Modicon M171/M172","Relative humidity":"5...95 % non-condensing","Operating altitude":"0...6561.68 ft (0...2000 m)","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)","Input/output number":"2 analog output 6 digital output 8 analog input 2 digital input","Sensor power supply":"5 V DC 40 mA supplied by the controller 24 V DC 100 mA supplied by the controller","Discrete input logic":"Sink or source (positive/negative) up to 2 kHz","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","Overvoltage category":"II","Total inputs/outputs":"18","Analogue input number":"8 configurable by pair","Discrete input number":"2","Nbr. of units in pkg.":"1","Analogue output number":"2 voltage/current 4...20 mA or 0...10 V or PWM (2 kHz)","Discrete input current":"5 mA AC/DC","Discrete input voltage":"24 V AC/DC","Discrete output number":"1 relay outputs SPDT with independent common 2 relay outputs SPST with same common 2 solid state, isolated SSR with independent common 1 relay outputs SPST with independent common","Power consumption in W":"11 W 24 V AC/DC","Discrete output current":"3 A relay SPST 3 A relay SPDT 0.2 A solid state, isolated","IP degree of protection":"IP20","Product or Component Type":"Programmable controllers","[Us] rated supply voltage":"24 V +/- 10 % AC 20...38 V DC","Product Specific Application":"HVAC","Ambient Air Temperature for Storage":"-22...158 °F (-30...70 °C)","Ambient air temperature for operation":"-4...140 °F (-20...60 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$281.94 – $441.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9a523a85483d1ae79e377361675f22f7.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/TM172PDG18S/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Schneider provide for this controller?","answer":"The controller is certified to UL 60730-1/2-9, CAN/CSA E60730-1/2-9, IEC 61000-4-2/3/4/5/6/11, EN 60730-1/2-9, and EN 60068-2-27/6. Material rating UL94 V0. Low Voltage and EMC directives are also met."},{"question":"What communication protocols does the TM172PDG18S support?","answer":"Ethernet with Modbus TCP and BACnet IP (includes webserver), two RS485 ports for Modbus serial or BACnet MS/TP, CAN, and USB (Type A host + Mini-B device)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/TM172PDG18S","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/TM172PDG18S when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}