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Schneider Electric TM172PBG28R

Schneider Electric TM172PBG28R Modicon M172 Controller, 28 I

MPNTM172PBG28R
Active

Schneider Electric Modicon M171/M172, TM172PBG28R, Programmable Controller for HVAC and pumping, 28 I/O (8 DI, 8 AI, 8 DO, 4 AO), without display, IP20, DIN rail mount.

$438.15Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

TM172PBG28R key specifications
ParameterValue
Display typeWithout Display
Range of productModicon M171/M172
Analogue input typeimpedance 0...1500 hOhm impedance 0...300 daOhm NTC temperature probe - 50...110 °C 0.1 °C extended) voltage 0...10 V NTC temperature probe - 40...150 °C 0.1 °C current 0...20 mA/4...20 mA PTC temperature probe - 55...150 °C 0.1 °C voltage 0...5 V absolute or ratiometric) Pt 1000 temperature probe - 200...850 °C 0.1 °C
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 current1 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 in15 W 24 V AC/DC
IP degree of protectionIP20
Mounting supportDIN rail Panel mounting with accessory

All specifications

TM172PBG28R 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)
StandardsIEC 61000-4-5 IEC 61000-4-3 IEC 61000-4-2 EN 60068-2-27 EN 60730-1 EN 60068-2-6 Fc UL 60730-1 UL 60730-2-9 IEC 61000-4-4 CAN/CSA-E60730-1 IEC 61000-4-11 IEC 61000-4-6 CSA E60730-2-9 EN 60730-2-9 UL94 (material V0)
VariantProgrammable
CategoryUS1PC1222537
Directives86/188/EEC - physical agents (noise) directive 2006/95/EC - 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 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)8 digital input 8 analog input 4 analog output 8 digital output
Discrete input logicSink or source (positive/negative)
Overvoltage categoryII
Total inputs (outputs)28
Analogue input number8 configurable by pair
Discrete input number8
Analogue output number2 voltage 0...10 V 2 voltage/current 4...20 mA or 0...10 V or PWM (2 kHz)
Discrete output number1 relay outputs SPDT with independent common 3 relay outputs SPST with same common 2 relay outputs SPST with same common 2 relay outputs SPST with independent common
Product specific applicationHVAC and pumping solution
Ambient air temperature for storage-22...158 °F (-30...70 °C)
Ambient air temperature for operation-4...140 °F (-20...60 °C) UL 60730-1 -4...149 °F (-20...65 °C) with derating UL 60730-1

Product details

Schneider Electric TM172PBG28R is a programmable controller in the Modicon M172 line for HVAC and pumping. It has 28 I/O: 8 DI, 8 AI configurable for NTC/PTC/Pt1000/voltage/current, 8 relay outputs, and 4 analog outputs (voltage or current/PWM); lifecycle status is current.

If you’re feeding temperature or pressure signals from NTC, PTC, or Pt1000 probes into those 8 analog inputs, the 10 kΩ input impedance is standard for voltage loops but won’t load a 4–20 mA loop — that’s handled by the 1500 hΩ or 300 daΩ impedance when configured for current mode. The 2.5 mA wetting current on the discrete inputs is typical for 24 V AC/DC sink/source; no phantom voltage issues there. For noise-prone environments like pump houses or VFD-laden panels, this controller ships with a significant compliance suite: IEC 61000-4-2 (ESD), -4-3 (radiated RF), -4-4 (EFT/burst), -4-5 (surge), -4-6 (conducted RF), and -4-11 (voltage dips). That’s the kind of spec sheet you want when a nearby contactor pulls in and the analog input starts wobbling. The 5–95 % non-condensing humidity range and operating temperature of –20 to +60 °C cover most indoor HVAC mechanical rooms. Mount it on DIN rail or panel; IP20 means no hose-downs — keep it inside the cabinet.

Frequently asked questions

What is the listed depth and width of this controller?

The TM172PBG28R has a depth of 2.4 in (60.5 mm) and a width of 5.7 in (144 mm). The height is 4.3 in (110 mm).

What compliance documentation does this controller carry?

The controller meets IEC 61000-4-2, -4-3, -4-4, -4-5, -4-6, -4-11, EN 60068-2-27 (shock), EN 60068-2-6 (vibration), EN 60730-1, EN 60730-2-9, UL 60730-1, UL 60730-2-9, and CSA E60730-1, -2-9. Material flammability is UL94 V0. Certifications are listed as per the evidence; a full declaration is available on request.

MPN
TM172PBG28R