Schneider TM171EP27R Modicon M17x expansion module 27 I/O

The TM171EP27R is a Schneider Electric Modicon M171 Performance Expansion Module with 27 I/O, designed to extend Modicon M171/M172 controllers in HVAC and pumping applications. It provides 8 digital inputs, 7 relay outputs, 6 analog inputs, and 5 analog outputs, with relay contacts rated up to 8 A.

Technical specifications:

• Commercial reference: TM171EP27R
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Modicon M171/M172
• Product type: Additional I/O module
• Specific applications: HVAC and pumping solution
• Total I/O: 27 (8 digital inputs, 7 digital outputs, 6 analog inputs, 5 analog outputs, 1 high-speed counter)
• Digital input voltage: 24 V AC/DC or 48 V DC, sink or source logic, 2.5 mA, input impedance 20 kΩ
• Digital outputs: 3 relay SPST + 2 relay SPST (shared common), 2 relay SPDT (independent common); rated 8 A (SPDT) / 5 A (SPST)
• Analog input types: 0...5 V, 0...10 V, 4...20 mA, NTC probe -50...110 °C and -40...150 °C (0.1 °C resolution), Pt1000 probe -200...800 °C (0.1 °C resolution)
• Analog outputs: 3 voltage/current 0...10 V or 4...20 mA; 2 open collector/current 4...20 mA or 12 V / 35 mA / 1 kHz
• Communication port: 1 CAN port, screw terminal block
• Sensor supply: 5 V DC at 50 mA, 12 V DC at 150 mA
• Supply voltage: 24 V AC, 48 V
• Overvoltage category: II
• Mounting: DIN rail
• Dimensions (WxHxD): 140 x 110 x 61.6 mm
• Weight: 0.19 kg
• IP protection rating: IP20, pollution degree 2
• Operating temperature: -20...55 °C; storage: -40...85 °C
• Relative humidity: 10...90%, non-condensing
• Standards: EN/IEC 60730
• Certifications: CE, cURus, EAC, CSA

Features and benefits:

• Adds 27 mixed I/O to Modicon M171/M172 controllers in a single DIN rail module
• Accepts NTC and Pt1000 temperature probes directly with 0.1 °C resolution, covering -200...800 °C
• Built-in sensor supply outputs (5 V DC and 12 V DC) eliminate the need for external power supplies
• Mixed relay output types - SPST and SPDT - cover a wide range of load switching requirements
• Wide operating temperature range of -20...55 °C suits demanding HVAC and industrial environments

Applications:

• HVAC system automation - heating, ventilation, and air conditioning control
• Pumping station monitoring and control
• Building management systems requiring temperature and process signal integration
• Industrial control panels needing expanded mixed digital and analog I/O

Compliant with EN/IEC 60730. Part of the Schneider Electric Modicon M171/M172 range.

Also known as: Schneider TM171EP27R, Schneider Electric TM171EP27R, Modicon M171 I/O expansion module.