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Schneider Electric TM172PDG18S

Schneider TM172PDG18S Modicon M172 Controller, 18 I/O

MPNTM172PDG18S
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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.

$281.94 – $441.00Ref. price · indicative, final on quote
Schneider Electric TM172PDG18S datasheet (PDF)
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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

TM172PDG18S key specifications
ParameterValue
Display typeBacklit LCD - 128 x 64 pixels
Range of productModicon M171/M172
Analogue input typeNTC 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)
Product or component typeProgrammable controllers
Discrete input voltage24 V AC/DC
Supply voltage24 V +/- 10 % AC 20...38 V DC
Discrete input current5 mA AC/DC
Discrete output current3 A relay SPST 3 A relay SPDT 0.2 A solid state, isolated
Sensor power supply5 V DC 40 mA supplied by the controller 24 V DC 100 mA supplied by the controller
Power consumption in11 W 24 V AC/DC
IP degree of protectionIP20
Mounting supportPanel mounting with accessory DIN rail

All specifications

TM172PDG18S additional specifications
ParameterValue
Pollution degree2
Relative humidity5...95 % non-condensing
Operating altitude0...6561.68 ft (0...2000 m)
Depth2.4 in (60.5 mm)
Width2.8 in (72 mm)
Height4.3 in (110 mm)
StandardsEN 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)
VariantProgrammable
CategoryUS1PC1222537
Directives2014/35/EU - low voltage directive 2014/30/EU - electromagnetic compatibility
Number of port1 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 clockBuilt-in clock, clock drift <= 30 s/month at -4...140 °F (-20...60 °C)
Input impedance10 kOhm
Local signalling1 LED (red) for programmable 1 LED (yellow) for programmable 1 LED (green) for programmable 1 LED (green) for power
Input (output number)2 analog output 6 digital output 8 analog input 2 digital input
Discrete input logicSink or source (positive/negative) up to 2 kHz
Measurement accuracy0...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 categoryII
Total inputs (outputs)18
Analogue input number8 configurable by pair
Discrete input number2
Analogue output number2 voltage/current 4...20 mA or 0...10 V or PWM (2 kHz)
Discrete output number1 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
Product specific applicationHVAC
Ambient air temperature for storage-22...158 °F (-30...70 °C)
Ambient air temperature for operation-4...140 °F (-20...60 °C)

Product details

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).

Frequently asked questions

What compliance documentation does Schneider provide for this controller?

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.

What communication protocols does the TM172PDG18S support?

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).

MPN
TM172PDG18S