Schneider TM3DI8 Discrete Input Module, Modicon TM3, 8 inputs, screw, 24 DC

The Schneider Electric TM3DI8 is a discrete digital input module from the Modicon TM3 range, designed to expand the I/O capabilities of compatible Modicon logic controllers. It provides 8 digital inputs operating at 24 V DC with a 4 ms response time, supporting both sink and source (positive/negative) logic configurations.

Technical specifications:

• Commercial reference: TM3DI8
• Manufacturer: Schneider Electric
• Series / range: Modicon TM3
• Product type: Digital input module
• Number of digital inputs: 8 (IEC 61131-2 Type 1)
• Digital input logic: Sink or source (positive/negative)
• Input voltage: 24 V DC
• Input current per channel: 7 mA
• Guaranteed state 1 voltage: 15...28.8 V
• Guaranteed state 0 voltage: 0...5 V
• Input impedance: 3.4 kΩ
• Response time: 4 ms (ON), 4 ms (OFF)
• Local indication: 1 green LED per channel (input status)
• Connection: 11 x 2.5 mm² removable screw terminal block, 5.08 mm pitch
• Max cable length (unshielded): <30 m
• Isolation: Between inputs and internal electronics at 500 V AC
• Mounting: TH35-7.5 or TH35-15 DIN rail (IEC 60715), panel/plate with mounting kit
• Dimensions (WxHxD): 27.4 x 90 x 84.6 mm
• Weight: 0.085 kg
• IP rating: IP20 with protective cover in place
• Operating temperature: -10...35 °C (vertical), -10...55 °C (horizontal)
• Storage temperature: -25...70 °C
• Relative humidity: 10...95%, non-condensing
• Pollution degree: 2
• Vibration resistance: 3.5 mm at 5...8.4 Hz; 3 gn at 8.4...150 Hz (DIN rail and panel)
• Shock resistance: 15 gn for 11 ms
• Certifications: CE, cULus, UKCA, RCM, EAC, cULus HazLoc
• Standard: IEC 61131-2
• Compatible controllers: Modicon M221, M241, M251, M262

Features and benefits:

• Supports both sink and source wiring, offering flexible installation in varied control panel configurations
• Per-channel green LED status indicators enable fast visual diagnostics without additional tooling
• Wide operating temperature range up to 55 °C in horizontal mounting suits demanding industrial environments
• Isolated inputs (500 V AC) protect internal electronics from field-side disturbances
• Compact 27.4 mm wide housing minimises DIN rail space in space-constrained enclosures
• Removable screw terminal block simplifies wiring and module replacement during maintenance

Applications:

• Expanding digital input capacity on Modicon M221, M241, M251, and M262 controllers in machine automation
• Connecting push-buttons, limit switches, and sensors in industrial control panels
• Building automation systems requiring additional discrete signal monitoring
• Process control applications where field device status must be fed into a programmable logic controller

Compliant with IEC 61131-2. Part of the Schneider Electric Modicon TM3 range.

Also known as: Schneider TM3DI8, Schneider Electric TM3DI8, TM3 digital input module, Modicon TM3 I/O expansion module.