The Schneider TM3DI16 expands the input capacity of Modicon M221, M241, and M251 logic controllers. This module offers 16 discrete inputs that comply with IEC 61131-2 type 3 specifications. All inputs operate at 24 V DC and draw 7 mA per channel.
Furthermore, the TM3DI16 supports both sink and source logic configurations. This flexibility allows connection to NPN or PNP sensors without hardware changes. The removable screw terminal block simplifies wiring and maintenance. For small to medium automation systems, this module provides reliable digital signal acquisition.
The module features 16 discrete DC inputs. Rated voltage is 24 V DC. The guaranteed state 1 voltage ranges from 15 V to 28.8 V. For state 0, the guaranteed voltage is 0 V to 5 V. Current thresholds are also clearly defined. State 1 requires at least 2.5 mA, while state 0 stays at or below 1 mA.
Each input has an impedance of 3.4 kOhm. Input current is fixed at 7 mA per channel. These values remain consistent across all 16 points. This uniformity simplifies sensor selection and wiring calculations.
The discrete input logic supports sink or source wiring. In sink mode (NPN sensor), current flows from the input terminal to the common. In source mode (PNP sensor), current flows from the common to the input terminal. Both methods work with the TM3DI16 without any configuration change.
The module draws power through the TM3 bus connector. When inputs are off, consumption is 5 mA at 5 V DC. When inputs are on, consumption rises to 40 mA at 5 V DC. No current is drawn from the 24 V DC bus in either state. This low power profile allows many expansion modules on one controller.
Turn-on response time is 4 milliseconds. Turn-off response time is also 4 milliseconds. This speed suits most general purpose discrete sensing applications. For high speed counting, consider dedicated fast input modules.
Local signaling uses green LEDs for input status. Each of the 16 inputs has a dedicated indicator. When an input is active, its LED turns on. This visual feedback helps during commissioning and troubleshooting.
No isolation exists between individual input channels. Therefore, all inputs share a common reference. Plan your wiring accordingly when using sensors from different power sources.
Isolation between all inputs and the internal logic is rated at 500 V AC. This protects the controller from field wiring faults. The isolation test duration is one minute.
Width measures 27.4 mm. Height is 90 mm, and depth reaches 84.6 mm. This compact width allows high density mounting. You can place multiple TM3 modules side by side on a DIN rail.
The TM3DI16 weighs 0.1 kg. This lightweight design reduces stress on DIN rails and mounting plates. Shipping costs also remain low due to the small size.
For horizontal installation, the operating range is -10°C to 55°C. For vertical installation, the range narrows to -10°C to 35°C. Storage temperature spans -25°C to 70°C. These ranges cover most industrial environments.
Relative humidity tolerance is 10% to 95% without condensation. This applies to both operation and storage. Operating altitude reaches 2000 meters. Storage altitude extends to 3000 meters. The IP20 protection rating applies when the protective cover is in place. Pollution degree is rated at 2.
The module complies with EN/IEC 61131-2 and EN/IEC 61010-2-201 standards. Certifications include C-Tick and cULus. CE marking confirms European compliance. Marine specifications from LR, ABS, DNV, and GL are also met.
Electrostatic discharge immunity reaches 4 kV for contact discharge and 8 kV for air discharge. Electromagnetic field immunity is 10 V/m from 80 MHz to 1 GHz. Magnetic field immunity reaches 30 A/m at 50-60 Hz. Fast transient immunity is 1 kV for I/O. Surge withstand reaches 1 kV for DC I/O in common mode.
Radiated emissions meet class A requirements. At 30-230 MHz, the test level is 40 dBμV/m QP at 10 meters. At 230 MHz to 1 GHz, the level is 47 dBμV/m QP at 10 meters. These ratings ensure reliable operation in industrial environments.
On DIN rail mounting, vibration resistance is 3.5 mm at 5-8.4 Hz. From 8.4 Hz to 150 Hz, the rating is 3 gn. On panel mounting, the same values apply. This robustness suits applications with mechanical vibration.
Shock resistance reaches 15 gn with an 11 ms test wave duration. This protects the module during transport and in high impact environments.
Three mounting methods are available. First, use a top hat TH35-7.5 or TH35-15 rail conforming to IEC 60715. Second, mount on a plate or panel using the optional fixing kit. Third, for vertical installation, follow the reduced temperature limits.
Clip the TM3DI16 onto the top hat rail. Press firmly until the latch engages. Slide the module to the left against the adjacent unit. Secure the module using end stops on both sides. Leave 50 mm of free space above and below for ventilation.
Use the removable screw terminal block for wiring. The terminal pitch is 3.81 mm. Wire cross section can be up to 1.5 mm². Strip 7 mm of insulation from each wire. Insert the wire into the terminal and tighten the screw to 0.5 Nm.
For unshielded cables, the maximum length is 50 meters for regular inputs. For longer runs, consider shielded cable or signal conditioning. Keep input wiring away from high power AC cables to reduce noise pickup.
The TM3DI16 works with Modicon M221, M241, and M251 logic controllers. These controllers support TM3 expansion modules through the bus connector. Always check the specific controller manual for expansion limits.
You can mix TM3 digital and analog modules freely. The controller automatically assigns I/O addresses. However, respect the total bus current limit. Each module draws 5 V DC power from the bus. Calculate total consumption before finalizing your configuration.
1 x Schneider TM3DI16 Discrete Input Module
1 x Removable screw terminal block (10 terminals, pitch 3.81 mm)
1 x Protective cover
1 x Quick start guide
We ship worldwide using FedEx, UPS, and DHL. Tracking numbers are provided within 24 hours after dispatch. Anti-static packaging protects the module during transit.
1. Can the TM3DI16 accept inputs from both NPN and PNP sensors simultaneously?
Yes, but all inputs share the same common reference. You must wire all sensors in the same logic mode. Mixing sink and source sensors on the same module is possible only if they share the same common voltage reference.
2. What happens if I apply 24 V AC to an input?
The TM3DI16 is designed for DC inputs only. Applying AC voltage may damage the input circuit. Always verify your sensor output type before wiring.
3. How do I calculate the total 5 V DC current for multiple TM3 modules?
Add the 5 V DC consumption of each module. For the TM3DI16, consumption is 5 mA when all inputs are off, and 40 mA when all inputs are on. Use the worst case value for power budgeting. Check your controller manual for maximum bus current.
4. Why does the vertical installation have a lower temperature limit?
Vertical installation reduces natural convection. Heat dissipation is less efficient. Therefore, the maximum ambient temperature drops from 55°C to 35°C. For high temperature environments, always use horizontal mounting.
5. Can I use this module with a Modicon M262 controller?
The TM3DI16 is designed for M221, M241, and M251 controllers. For M262 systems, use TM4 expansion modules instead. Check the compatibility matrix in your controller manual before purchasing.
| Brand Name | Schneider Electric |
| Model No. | TM3DI16 |
| Product Type | Discrete Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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