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Schneider Electric TM172PDG42RI

TM172PDG42RI Modicon M172 HVAC Controller, 42 I/O

MPNTM172PDG42RI
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Schneider Electric Modicon M172 programmable controller, TM172PDG42RI, with 42 I/O, backlit LCD, real-time clock, and multi-protocol networking for HVAC building automation.

$396.24 – $555.00Ref. price · indicative, final on quote
Schneider Electric TM172PDG42RI datasheet (PDF)
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Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

TM172PDG42RI key specifications
ParameterValue
Display typeBacklit LCD - 128 x 64 pixels
Range of productModicon M171/M172
Analogue input typeimpedance 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
Product or component typeProgrammable controllers
Discrete input voltage24 V AC/DC
Supply voltage24 V +/- 10 % AC 20...38 V DC
Discrete input current2.5 mA
Discrete output current3 A relay SPDT 3 A relay SPST
Sensor power supply5 V DC 50 mA supplied by the controller 24 V DC 150 mA supplied by the controller
Power consumption in14 W 24 V AC/DC
IP degree of protectionIP20
Mounting supportPanel mounting with accessory DIN rail

All specifications

TM172PDG42RI additional specifications
ParameterValue
Pollution degree2
Relative humidity5...95 % non-condensing
Operating altitude0...6561.68 ft (0...2000 m)
Depth2.4 in (60.5 mm)
Width5.7 in (144 mm)
Height4.3 in (110 mm)
StandardsCAN/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)
VariantProgrammable
CategoryUS1PC1222537
Directives2014/30/EU - electromagnetic compatibility 2014/35/EU - low voltage directive
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...149 °F (-20...65 °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)12 analog input 6 analog output 12 digital input 12 digital output
Discrete input logicSink or source (positive/negative)
Measurement accuracyNTC 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 categoryII
Total inputs (outputs)42
Analogue input number12 configurable by pair
Discrete input number12
Analogue output number4 voltage 0...10 V 2 voltage/current 4...20 mA or 0...10 V or PWM (2 kHz)
Discrete output number2 relay outputs SPDT with independent common 3 relay outputs SPST with same common 5 relay outputs SPST with same common 2 relay outputs SPST with independent common
Product specific applicationHVAC 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...140 °F (-20...60 °C) horizontal UL 60730-1

Product details

Fieldbus and connectivity

The TM172PDG42RI: On the connectivity side: one CAN port, two RS485 serial links (Modbus RTU or BACnet MS/TP), one Ethernet port (Modbus TCP and BACnet IP with web server), and USB for programming. That covers both legacy and modern fieldbuses for most HVAC networks.

Panel mount with accessory DIN rail bracket. IP20, pollution degree 2. Dimensions 5.7 in wide x 4.3 in high x 2.4 in deep — fits standard enclosure cutouts. Ambient operating temperature -4 to 149 °F (-20 to 65 °C), storage down to -22 °F.

Analog input accuracy and sensor support

Analog inputs accept NTC 103AT-2 or NK103, PTC, Pt1000, plus 0–10 V, 0–20 mA, 4–20 mA, and resistance modes. Accuracy on the 4–20 mA loop is ±1% of full scale ±1 digit — tight enough for chiller or VAV box control. Pt1000 gets ±1.5 °C from -50 to 100 °C, widening outside that band.

Power and sensor supply

Powered by 24 V AC/DC ±10%, draws 14 W. Sensor supplies: 5 V DC at 50 mA and 24 V DC at 150 mA from the controller.

Frequently asked questions

What are the physical dimensions of TM172PDG42RI?

Width 5.7 in (144 mm), height 4.3 in (110 mm), depth 2.4 in (60.5 mm).

What compliance standards does the TM172PDG42RI meet?

It complies with CSA E60730-1, CSA E60730-2-9, EN 60068-2-27, EN 60068-2-6, EN 60730-1, EN 60730-2-9, UL 60730-1, UL 60730-2-9, IEC 61000-4-2 through 4-11, and UL94 V0 material. Also meets EU EMC and low-voltage directives (2014/30/EU and 2014/35/EU).

MPN
TM172PDG42RI