TM3TI4 Schneider Electric Modicon TM3 Temperature Analog Input Module 4 Channels 16-Bit
The TM3TI4 is a 4-channel temperature analog input module from the Schneider Electric Modicon TM3 range. Each channel accepts thermocouple, RTD, mV, voltage, or current signals through software setup. A 16-bit converter gives fine resolution for slow process signals. The module suits temperature loops, furnace control, and OEM machines using M221, M241, M251, or M262 controllers.
Signal Handling and Measurement Core
- 4 independent input channels, configurable one by one
- Thermocouple types: J, K, T, E, N, S, R, B
- RTD types: PT100, PT1000, NI100, NI1000, CU100
- Voltage input: 0 to 10 Vdc and plus/minus 10 Vdc
- Current input: 0 to 20 mA and 4 to 20 mA
- Resolution: 16 bits, 15 bits plus sign
Accuracy and Isolation
- Voltage, current, and RTD accuracy: plus/minus 0.2% FS at 25 °C
- Thermocouple accuracy: plus/minus 0.4 to plus/minus 0.2% FS by type
- 1500 V AC isolation between input and supply
- 500 V AC isolation between input and internal logic
- Stable readings in mixed-signal cabinets
Conversion Timing and Diagnostics
- Thermocouple conversion: 100 ms plus 100 ms per channel plus one controller cycle
- Sampling rate: 10 ms per channel
- Channel diagnostics: sensor break and short circuit
- Module status and bus status reported to the controller
- Fault flags help locate wiring issues fast
Electrical and Environmental Data
- Supply: 24 Vdc through the TM3 bus
- Bus current: 45 mA at 5 Vdc, 35 mA at 24 Vdc
- Operating temperature: 0 to +55 °C
- Storage temperature: -25 to +70 °C
- Protection rating: IP20
- Dimensions: 90 x 23.6 x 70 mm
- Weight: 0.11 kg
Wiring and Mounting
- Removable screw terminal block, 3.81 mm pitch
- Snap-on mounting to TM3 expansion rails
- Wire per channel after setting sensor type in software
- Use shielded cable for thermocouple and RTD runs
- Keep analog wires away from drive power cables
Compatibility and Use Cases
- Works with Modicon M221, M241, M251, and M262
- Fits TM3 expansion architecture for M2xx and M340 PLCs
- Good for oven, kiln, and dryer temperature control
- Good for plastic molding and food processing lines
- Good for retrofit of old analog temperature cards
- Lifecycle status: active
Oiltech Controls Review
- The TM3TI4 covers many sensor types in one module
- Software setup cuts spare part variety in stock
- 16-bit resolution suits slow but precise loops
- Channel diagnostics reduce troubleshooting time
- Compact 23.6 mm width saves panel space
Oiltech Controls Insight: Which Devices Fit
- M221 logic controllers with TM3 expansion
- M241 and M251 machine controllers
- M262 motion and process controllers
- M340 systems using TM3 expansion modules
- OEM panels that need mixed TC and RTD inputs
Why Buy From Oiltech Controls?
- More than 15 years in industrial automation spare parts
- Worldwide shipping through FedEx, UPS, and DHL
- Tested surplus and refurbished units available
- 12-month warranty on eligible products
- Technical check before every shipment
- Support for legacy and obsolete control systems
- Orders ship in 24 to 28 hours
Order and Contact
- Email: info@oiltechcontrols.com
- Phone and WhatsApp: +86 158 8020 0923
- Warranty: 12 months
- Dispatch: 24 to 28 hours
- Couriers: FedEx, UPS, DHL
FAQ
Can I mix thermocouple and RTD on one TM3TI4?
Yes. Each channel is set in software. You can run Type K on one channel and PT100 on another. This helps when a machine uses different sensors.
Do I need external signal conditioners?
No for most cases. The module reads TC, RTD, mV, voltage, and current directly. Use a transmitter only for special sensors or long cable runs.
How do I pick between PT100 and PT1000?
PT1000 gives higher resistance and better noise margin on long cables. PT100 reacts faster and costs less. Match the sensor already used in your machine.
What causes sensor break alarms?
Open wiring, loose terminals, or a failed sensor. Check the terminal block first. Then check the cable and sensor resistance.
Can this module replace an older analog card?
Often yes, if your controller supports TM3 expansion. Compare channel count, signal type, and isolation before buying. Contact us for a cross-reference check.
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- Long-tail: Modicon TM3 temperature module for obsolete PLC retrofit
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