TM3DI32K

The Schneider Electric TM3DI32K, also cataloged as the TM3DI32K discrete input module, provides 32-channel 24 VDC digital input acquisition for Modicon M221, M241, M251 and M262 controller platforms. It uses an HE-10 input connector and communicates with the controller through the TM3 expansion bus.

Hardware Specifications

Parameter	Specification
Model	TM3DI32K
Brand	Schneider Electric
Series	Modicon TM3
Product Type	Discrete input module
Origin	Taiwan (TW)
Weight	0.1 kg
Dimensions	33.5 mm W x 81.3 mm D x 90 mm H
Operating Temp	-10 to 35 deg C vertical; -10 to 55 deg C horizontal
Power Consumption	34 mA at 5 VDC typical internal bus consumption; 5 mA input current
Number of Inputs	32
Input Voltage	24 VDC
Input Logic	Sink or source
Input Type	IEC 61131-2 Type 3
Input Current	5 mA
State 1 Voltage	15 to 28.8 VDC
State 0 Voltage	0 to 5 VDC
State 1 Current	>= 2.5 mA
State 0 Current	<= 1 mA
Input Impedance	4.4 kOhm
Input Response Time	4 ms maximum ON; 4 ms maximum OFF
Sensor Supply	19.2 to 28.8 VDC
Electrical Connection	Removable HE-10 connector
Input-to-Logic Isolation	500 VAC
Group/Channel-to-Bus Isolation	500 VAC
Cable Distance	<30 m with unshielded cable for regular inputs
Local Indication	1 green LED per input channel
Mounting	TH35-15 or TH35-7.5 DIN rail; plate/panel mounting
Protection Rating	IP20
Standards	IEC 61131-2
Certifications	CE, cULus, UKCA, RCM, EAC, cULus HazLoc
Storage Temperature	-25 to 70 deg C
Relative Humidity	10 to 95%, non-condensing
Operating Altitude	0 to 2000 m
Lifecycle Carbon Footprint	27 kg CO2 eq.
GTIN	3606480611414

PLC I/O Bus and Digital Signal Characteristics

TM3DI32K is an expansion I/O module for Modicon M221, M241, M251 and M262 controllers. The TM3 bus distributes data and power between the controller and connected TM3 modules through the module interlocking system.

The 32 inputs accept 24 VDC discrete signals and support sink or source logic. Each input is monitored independently with a dedicated green status LED. The specified maximum input response time is 4 ms for both turn-on and turn-off transitions.

The input circuitry provides 500 VAC isolation between the input group and internal logic, with 500 VAC isolation also specified between channels/groups and the bus. Inputs themselves are not individually isolated from one another.

Frequently Asked Questions

Q: What input voltage does the TM3DI32K use?
A: The module uses 24 VDC discrete inputs. 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 TM3DI32K connected to field devices?
A: The 32 digital inputs use an HE-10 connector. For regular inputs, the specified maximum cable distance with unshielded cable is less than 30 m.

Q: Can the module be mounted on a DIN rail?
A: Yes. It supports TH35-15 and TH35-7.5 top-hat rails conforming to IEC 60715, as well as plate or panel mounting with the specified fixing kit.

Field Installation Guidelines

• Install the module on a supported TH35 DIN rail or suitable panel mounting surface.
• Connect the HE-10 field wiring according to the applicable TM3 wiring documentation.
• Maintain separation between discrete input wiring and high-voltage or high-noise conductors.
• Observe the specified 30 m maximum cable distance when using unshielded cable for regular inputs.
• Verify the 24 VDC field supply before applying signals to the input channels.
• Check the green channel LEDs after wiring to confirm the expected input states.
• Ensure the TM3 expansion connectors are fully engaged before energizing the controller and I/O assembly.
• Provide appropriate protective earth and cabinet grounding according to the installation environment and applicable electrical standards.
• Do not exceed the specified operating temperature, humidity, altitude, vibration, and shock limits.
• The IP20 rating requires installation inside an enclosure providing the required environmental protection.

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