TM3DQ16TG

The Schneider Electric TM3DQ16TG, also cataloged as the TM3DQ16TG discrete output module, provides 16 transistor PNP source outputs for controlling external devices from Modicon M221, M241, M251, and M262 controllers. It operates at 24 VDC and uses a bus connector for internal power and data distribution. Removable spring terminals provide field wiring connections, and individual green LEDs indicate output status.

Hardware Specifications

Parameter	Specification
Model	TM3DQ16TG
Brand	Schneider Electric
Product Range	Modicon TM3
Product Type	Discrete Output Module
Weight	0.11 kg
Dimensions	27.4 x 84.6 x 90 mm (W x D x H)
Operating Temp	-10 to 35 deg C (vertical); -10 to 55 deg C (horizontal)
Power Consumption	Internal bus powered; typical current consumption listed as 5 mA at 5 VDC and 10 mA at 24 VDC
Number of Outputs	16 transistor outputs
Output Logic	Positive logic (PNP source)
Output Voltage	24 VDC
Output Current	500 mA per transistor output
Output Response Time	450 us maximum, turn-on and turn-off
Maximum Leakage Current	0.1 mA
Maximum Voltage Drop	Less than 0.4 V
Output-to-Bus Isolation	500 VAC
Output-to-Supply Isolation	1500 VAC
Electrical Connection	Removable spring terminal block, 3.81 mm pitch
Maximum Unshielded Cable Distance	30 m
Protection Rating	IP20
Mounting	TH35-7.5 or TH35-15 DIN rail, or panel mounting with fixing kit
Storage Temperature	-25 to 70 deg C
Relative Humidity	10-95%, non-condensing
Standards	IEC 61131-2
Certifications	CE, cULus, UKCA, RCM, EAC, cULus HazLoc
GTIN	3606480611490
Lifecycle Carbon Footprint	34 kg CO2 eq.

PNP Output Architecture and PLC Integration

The TM3DQ16TG uses positive-logic transistor outputs to switch the positive supply to connected loads. Each channel supports a specified output current of up to 500 mA. The connected load current, supply voltage, and total system loading must remain within the applicable hardware limits.

The module connects to compatible Modicon M221, M241, M251, and M262 controllers through the TM3 expansion bus. The bus distributes internal power and data between assembled modules. EcoStruxure Machine Expert supports controller programming and configuration of the expansion I/O system.

Each output has an individual green status LED. The 500 VAC isolation rating between channels and bus and the 1500 VAC isolation rating between output and supply are separate specifications and should not be treated as interchangeable.

Frequently Asked Questions (FAQ)

Q: What is the maximum current per output channel?

A: The specified maximum transistor output current is 500 mA per channel. Verify the load requirements and applicable module loading limits before connecting multiple outputs to external devices.

Q: Which PLC controllers support the TM3DQ16TG?

A: The module is listed as compatible with Modicon M221, M241, M251, and M262 logic controllers. Confirm the controller configuration and firmware compatibility before installation.

Q: Can the TM3DQ16TG be installed on a DIN rail?

A: Yes. It supports TH35-7.5 and TH35-15 rails conforming to IEC 60715. Panel mounting is also supported when the appropriate fixing kit is used.

Field Installation Guidelines

1. Isolate the controller and external load supplies before mounting the module or wiring the output terminals.
2. Install the module on a compatible DIN rail or panel and engage the TM3 interlocking mechanism according to the manufacturer's instructions.
3. Connect the module to the controller expansion bus and verify that the bus connectors are fully seated.
4. Wire each PNP output according to the terminal assignment in the official instruction sheet. Confirm the load supply polarity and common reference before energizing the circuit.
5. Use conductors within the specified 0.14-1.5 mm2 range. Secure each spring terminal connection and check for exposed conductor strands.
6. Keep output wiring separated from high-noise power conductors where practical. Apply appropriate shielding and grounding practices to minimize electromagnetic interference.
7. Keep the installation within the applicable ambient temperature, humidity, and cable-length limits. The specified maximum unshielded output cable distance is 30 m.
8. After energization, verify each channel's LED indication and confirm the corresponding field device switches as commanded by the PLC.
9. Consult the official product datasheet and instruction sheet for terminal assignments, load restrictions, and commissioning requirements.

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