{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TM172PDG42SI","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"TM172PDG42SI","canonicalUrl":"https://aoctrl.com/schneider/TM172PDG42SI","factsUrl":"https://aoctrl.com/api/mcp/products/TM172PDG42SI","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Modicon M172 Programmable Controller, TM172PDG42SI, 42 I/O, Backlit LCD, Ethernet/RS485, 24 V AC/DC.","salesMarkdown":"The Schneider Electric TM172PDG42SI is a programmable controller in the Modicon M171/M172 range, explicitly designed for HVAC control applications as stated in its product-specific application field. It provides 42 mixed I/O — 12 digital inputs, 12 digital outputs (combination of relay SPDT/SPST and solid-state isolated), 12 analog inputs configurable by pair, and 6 analog outputs — making it a one-box solution for a medium-sized terminal controller. ## I/O and fieldbus detail Twelve digital inputs accept 24 V AC/DC, sink or source logic. The 12 digital outputs break into 2 relay SPDT with independent common, 3 relay SPST shared common, 5 relay SPST shared common, and 2 solid-state isolated SPST — relay contacts rated 3 A each, solid-state 0.5 A. Analog inputs handle voltage (0–5 V, 0–10 V), current (0–20 mA/4–20 mA), resistance (Pt1000, NTC 103AT-2, NTC NK103), and PTC probes, with per-pair configuration. Communication includes one Ethernet RJ45 port for Modbus TCP and BACnet IP with embedded web server, two RS485 screw terminals for Modbus serial link or BACnet MS/TP, and one USB mini-B device port for programming. A USB type-A host port is also present. This fieldbus mix covers both standard building automation protocols without additional gateways. ## Environmental and mounting considerations The controller is rated IP20 (protection against solid objects >12 mm, no water ingress), suitable for clean control panels. Operating ambient temperature is -4 to 149 °F (-20 to 65 °C), derated to -4 to 131 °F (-20 to 55 °C) when mounted horizontally per UL 60730-1. Storage range is -22 to 158 °F (-30 to 70 °C). Dimensions are 5.7 in (144 mm) wide × 4.3 in (110 mm) high × 2.4 in (60.5 mm) deep. It supports panel mounting with an accessory DIN-rail bracket — a common footprint for M172-series controllers. ## Compliance and sourcing posture The TM172PDG42SI carries UL, CSA, EN standards with material rating UL94 V0, and meets directives 2014/30/EU and 2014/35/EU.","metaTitle":"Schneider TM172PDG42SI Modicon M172 Programmable Controller,","metaDescription":"Schneider Electric TM172PDG42SI Modicon M172 HVAC controller with 12 DI, 12 DO, 12 AI, 6 AO, Ethernet, RS485, Modbus/BACnet. Active production, RFQ to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Depth":"2.4 in (60.5 mm)","Width":"5.7 in (144 mm)","Height":"4.3 in (110 mm)","Variant":"Programmable","Category":"US1PC1222537","Standards":"CAN/CSA-E60730-1 CSA E60730-2-9 EN 60068-2-27 EN 60068-2-6 Fc EN 60730-1 EN 60730-2-9 UL 60730-1 UL 60730-2-9 IEC 61000-4-2 IEC 61000-4-3 IEC 61000-4-4 IEC 61000-4-5 IEC 61000-4-6 IEC 61000-4-11 UL94 (material V0)","Directives":"2014/30/EU - electromagnetic compatibility 2014/35/EU - low voltage directive","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...149 °F (-20...65 °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":"impedance 0...1500 hOhm 1 hOhm 10 kOhm impedance 0...300 daOhm 1 daOhm 2 kOhm NTC 103AT-2 Beta 3435 temperature probe - 50...110 °C 0.1 °C 10 kOhm voltage 0...10 V 1 digit > 10 kOhm NTC NK103 Beta 3977 temperature probe - 40...137 °C 0.1 °C 10 kOhm extended) current 0...20 mA/4...20 mA 1 digit < 150 Ohm PTC temperature probe - 55...150 °C 0.1 °C 2 kOhm voltage 0...5 V 1 digit > 20 kOhm absolute or ratiometric) Pt 1000 temperature probe - 200...850 °C 0.1 °C 2 kOhm direct input > 10 kOhm","Input/output number":"12 analog input 6 analog output 12 digital input 12 digital output","Sensor power supply":"5 V DC 50 mA supplied by the controller 24 V DC 150 mA supplied by the controller","Discrete input logic":"Sink or source (positive/negative)","Measurement accuracy":"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 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 HOhm 0...1500 hOhm +/- 8.5 hOhm DaOhm 0...300 daOhm +/- 2.5 daOhm","Overvoltage category":"II","Total inputs/outputs":"42","Analogue input number":"12 configurable by pair","Discrete input number":"12","Nbr. of units in pkg.":"1","Analogue output number":"4 voltage 0...10 V 2 voltage/current 4...20 mA or 0...10 V or PWM (2 kHz)","Discrete input current":"2.5 mA","Discrete input voltage":"24 V AC/DC","Discrete output number":"2 relay outputs SPDT with independent common 3 relay outputs SPST with same common 5 relay outputs SPST with same common 2 solid state, isolated SPST with independent common","Power consumption in W":"14 W 24 V AC/DC","Discrete output current":"3 A relay SPDT 3 A relay SPST 0.5 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 control","Ambient Air Temperature for Storage":"-22...158 °F (-30...70 °C)","Ambient air temperature for operation":"-4...149 °F (-20...65 °C) UL 60730-1 -4...131 °F (-20...55 °C) horizontal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/TM172PDG42SI/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of the TM172PDG42SI?","answer":"The controller measures 5.7 in (144 mm) wide, 4.3 in (110 mm) high, and 2.4 in (60.5 mm) deep."},{"question":"What compliance standards does the TM172PDG42SI meet?","answer":"It is listed under UL 60730-1, CSA E60730-1, EN 60730-1 and -2-9, and meets IEC 61000-4-x EMC immunity standards. Material rating is UL94 V-0. Directives 2014/30/EU (EMC) and 2014/35/EU (Low Voltage) are declared."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/TM172PDG42SI","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/TM172PDG42SI 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}}