TM3DI16

Configured for 24 VDC discrete signal acquisition in Modicon M221, M241, M251 and M262 controller systems, the Schneider Electric TM3DI16 (TM3DI16 Discrete Input Module) provides 16 logic inputs through a removable screw terminal connection and TM3 expansion bus interface.

Hardware Specifications

Parameter	Specification
Model	TM3DI16
Brand	Schneider Electric
Product Type	Discrete input module
Product Range	Modicon TM3
Compatible Controllers	Modicon M221, M241, M251, M262
Discrete Inputs	16
Input Voltage	24 VDC
Input Logic	Sink or source
Input Standard	IEC 61131-2 Type 3
Input Current	7 mA
State 1 Voltage	15-28.8 VDC
State 0 Voltage	0-5 VDC
State 1 Current	>= 2.5 mA
State 0 Current	<= 1 mA
Input Impedance	3.4 kOhm
Input Response Time	4 ms maximum, turn-on; 4 ms maximum, turn-off
Sensor Supply	19.2-28.8 VDC
Typical Bus Current Consumption	34 mA at 5 VDC
Electrical Connection	Removable screw terminal block, 3.81 mm pitch
Maximum Cable Distance	50 m for regular input with unshielded cable
Channel-to-Bus Isolation	500 VAC
Local Indication	1 green LED per input channel
Mounting	TH35-15 or TH35-7.5 DIN rail, plate or panel
Dimensions	27.4 x 84.6 x 90 mm
Weight	0.1 kg
IP Rating	IP20
Operating Temperature	-10 to 35 deg C vertical; -10 to 55 deg C horizontal
Storage Temperature	-25 to 70 deg C
Relative Humidity	10-95%, non-condensing
Operating Altitude	0-2000 m
Power Supply	Internal TM3 bus
Certifications	CE, cULus, UKCA, RCM, EAC, cULus HazLoc
Standard	IEC 61131-2
Origin	TW
Lifecycle Carbon Footprint	20 kg CO2 eq.
GTIN	3606480611384

TM3 Bus Communication and I/O Expansion

The TM3DI16 receives its module power and data through the internal TM3 expansion bus when assembled with compatible Modicon controllers and TM3 I/O modules. The 16-channel input density allows multiple discrete field signals to be concentrated within a compact expansion assembly. The module uses one removable terminal block for field wiring and provides individual green LED indication for input status.

The input interface accepts sink or source logic and provides 500 VAC isolation between the channels and the bus. The specified 4 ms maximum turn-on and turn-off response time defines the module's digital signal processing response.

Frequently Asked Questions (FAQ)

Q: What controllers are compatible with the TM3DI16?

A: The TM3DI16 is specified for Modicon M221, M241, M251 and M262 controllers as part of the TM3 I/O expansion system.

Q: What is the input electrical range?

A: The module operates with a 24 VDC nominal input supply. A logic state 1 is guaranteed from 15 to 28.8 VDC, while a logic state 0 is specified from 0 to 5 VDC.

Q: How is the TM3DI16 mounted and connected?

A: It can be mounted on TH35-15 or TH35-7.5 DIN rail, or on a plate or panel using the appropriate fixing kit. Field signals connect through the removable screw terminal block.

Field Installation Guidelines

• Mount the module on a compatible IEC 60715 TH35 DIN rail or approved panel mounting arrangement.
• Install the module in an enclosure consistent with its IP20 protection rating.
• Connect the 24 VDC discrete signals according to the required sink or source input configuration.
• Keep discrete signal wiring separated from high-voltage power and high-noise switching conductors where practical.
• Use the specified terminal block conductor range and maintain secure terminal connections.
• For runs approaching the specified 50 m maximum, verify voltage drop and electrical noise conditions before commissioning.
• Use the module's channel LEDs to verify field input state during commissioning.
• Maintain the TM3 mechanical interlocking and expansion-bus connection when assembling adjacent modules.
• Follow the controller and TM3 system installation documentation for grounding, shielding and cabinet wiring practices.

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