TM172PBG28RI

Name: TM172PBG28RI
Brand: Schneider
SKU: TM172PBG28RI

Programmable controller with 28 isolated I/Os and Ethernet connectivity, designed for HVAC solutions.

Product ModelTM172PBG28RI

Product ID34085

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
FeatureIdeal for HVAC solutions with 28 isolated I/Os.
2
FeatureFeatures 3 programmable LEDs and 1 power signaling LED.
3
FeatureIP20 rated for reliable operation in various environments.
4
FeatureEnhanced connectivity with isolated Ethernet interface.
5
Compact dimensions144mm (width) x 60.5mm (depth) x 110mm (height).

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Range of Product

Modicon M171/M172

Product or Component Type

Programmable controllers

Product Specific Application

HVAC control

Variant

Programmable

Total inputs/outputs

Discrete input number

Discrete output number

1 relay outputs SPDT with independent common3 relay outputs SPST with same common2 relay outputs SPST with same common2 relay outputs SPST with independent common

Discrete output current

3 A relay SPDT3 A relay SPST

Analogue input number

8 configurable by pair

Analogue output number

2 voltage 0...10 V2 voltage/current 4...20 mA or 0...10 V or PWM (2 kHz)

Number of port

1 CAN port - screw terminal block1 USB type A - USB type A female1 USB type mini B - USB device port Mini-B2 RS485 - screw terminal block Modbus serial link or BACnet MS/TP)1 Ethernet - RJ45 Modbus TCP and BACnet IP with webserver)

Input/output number

8 digital input8 analog input4 analog output8 digital output

Discrete input logic

Sink or source (positive/negative)

Discrete input voltage

24 V AC/DC

Discrete input current

2.5 mA

input impedance

10 kOhm

Analogue input type

impedance 0...1500 hOhm 1 hOhm 10 kOhm impedance 0...300 daOhm 1 daOhm 2 kOhmNTC 103AT-2 Beta 3435 temperature probe - 50...110 °C 0.1 °C 10 kOhm voltage 0...10 V 1 digit > 10 kOhmNTC NK103 Beta 3977 temperature probe - 40...137 °C 0.1 °C 10 kOhm extended) current 0...20 mA/4...20 mA 1 digit < 150 OhmPTC 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

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 °C0...20 mA 0...4 mA +/- 2 % of full scale +/- 1 digit0...20 mA 4...20 mA +/- 1 % of full scale +/- 1 digit4...20 mA +/- 1 % of full scale +/- 1 digit0...10 V +/- 1 % of full scale +/- 1 digit0...5 V +/- 1 % of full scale +/- 1 digitHOhm 0...1500 hOhm +/- 8.5 hOhmDaOhm 0...300 daOhm +/- 2.5 daOhm

Sensor power supply

5 V DC 50 mA supplied by the controller24 V DC 150 mA supplied by the controller

[Us] rated supply voltage

24 V +/- 10 % AC20...38 V DC

Power consumption in W

12 W 24 V AC/DC

Realtime clock

Built-in clock, clock drift <= 30 s/month at -4...149 °F (-20...65 °C)

Display type

Without Display

Overvoltage category

Local signalling

for programmable 1 LED (red) for programmable 1 LED (yellow) for programmable 1 LED (green) for power 1 LED (green)

Mounting Support

DIN railPanel mounting with accessory

Width

5.7 in (144 mm)

Height

4.3 in (110 mm)

Depth

2.4 in (60.5 mm)

Net Weight

0.7 lb(US) (0.3 kg)

Directives

2014/30/EU - electromagnetic compatibility2014/35/EU - low voltage directive

Standards

CAN/CSA-E60730-1CSA E60730-2-9EN 60068-2-27EN 60068-2-6 FcEN 60730-1EN 60730-2-9UL 60730-1UL 60730-2-9IEC 61000-4-2IEC 61000-4-3IEC 61000-4-4IEC 61000-4-5IEC 61000-4-6IEC 61000-4-11UL94 (material V0)

Product Certifications

EACCEcURusCSARCM

Ambient air temperature for operation

-4...149 °F (-20...65 °C) UL 60730-1-4...140 °F (-20...60 °C) horizontal UL 60730-1

Ambient Air Temperature for Storage

-22...158 °F (-30...70 °C)

Relative humidity

5...95 % non-condensing

IP degree of protection

IP20

Pollution degree

Operating altitude

0...6561.68 ft (0...2000 m)