Name: Triconex 3700 / 3701 | TMR differential analog input modules
Brand: TRICONEX
SKU: 2918956
Price: 1 USD
Availability: InStock

Model Overview

For Tricon v9–v11 analog acquisition, the Triconex 3700 / 3701 pair covers two TMR differential input ranges. Triconex 3700 accepts 0–5 V signals, while Triconex 3701 accepts 0–10 V signals, and each module converts 32 differential DC-coupled points into controller data.

Across the input terminals, Triconex 3700 / 3701 samples each differential DC-coupled signal through three analog channels before the value reaches the controller. The pair uses a 55 ms update rate, 12-bit resolution, 30 MΩ minimum input resistance, and a –12 V to +12 V peak common-mode range; the voltage span selects 3700 or 3701.

For Triconex 3700 / 3701 current conversion, the 3700 variant uses a 250 Ω shunt for 0–20 mA and the 3701 variant uses a 500 Ω shunt. The same front-panel Pass, Fault, and Active indicators then report module condition separately from the signal-range choice.

Technical Details

Technical Item	3700 / 3701
Brand	Triconex
Product Type	TMR differential analog input
System	Tricon v9–v11 systems
Input Points	32 differential, DC-coupled
Triconex 3700 Range	0–5 VDC
Triconex 3701 Range	0–10 VDC
Input Update Rate	55 ms
Resolution	12 bits
Accuracy	Less than 0.15% of FSR, 0–60 °C
Input Resistance	30 MΩ minimum
Common-Mode Range	–12 V to +12 V peak
Channel Isolation	200 kΩ typical
Current Conversion	0–20 mA with 250 Ω / 500 Ω shunt, by variant
Over-range Protection	150 VDC or 115 VAC continuous
Indicators	Pass, Fault, Active

Operating Characteristics

Triconex 3700 / 3701 differ primarily in the voltage span presented to the differential input channels; the sampling and resolution remain common to the pair.

Voltage selection

Use the 0–5 V range for Triconex 3700 and the 0–10 V range for Triconex 3701.

Triplicated sampling

Each differential point is sampled through three TMR channels before the value is made available to the controller.

Current conversion

A 250 Ω shunt belongs to Triconex 3700; a 500 Ω shunt belongs to Triconex 3701.

Diagnostics and Protection

Triconex 3700 / 3701 monitor the analog channels while maintaining input protection and front-panel status indication.

Common-mode limit

The –12 V to +12 V peak common-mode range applies to each differential channel.

Input protection

The input circuit is specified for 150 VDC or 115 VAC continuous over-range protection.

Miscompare detection

A sustained 2% of full-scale difference between readings is the stated diagnostic threshold for the 3700/3701 family.

Customer Questions

Which voltage span identifies each member of the Triconex 3700 / 3701 pair?

For Triconex 3700 / 3701, Triconex 3700 is the 0–5 VDC differential input version, while Triconex 3701 is the 0–10 VDC version. The selected field span determines which module record belongs to the signal.

How is a differential point presented to the controller in Triconex 3700 / 3701?

For Triconex 3700 / 3701, Each of the 32 DC-coupled points is wired as a differential signal and sampled through the triplicated analog path. It is not a single-ended input referenced only to one return.

Why are the current shunts different for Triconex 3700 / 3701?

For Triconex 3700 / 3701, A 250 Ω shunt converts 0–20 mA for Triconex 3700, while Triconex 3701 uses 500 Ω. Using the other resistance changes the voltage presented to the input circuit.

What does the 55 ms value describe for Triconex 3700 / 3701?

The 55 ms figure is the input update rate for the Triconex 3700 / 3701 pair, not a field-cable delay or a controller scan time. The conversion resolution is 12 bits.

What common-mode condition belongs to each channel for Triconex 3700 / 3701?

For Triconex 3700 / 3701, Keep the differential channel within the –12 V to +12 V peak common-mode range. This limit applies to the channel input relationship, not to the 0–5 V or 0–10 V signal span itself.

How can module state be distinguished from the analog range in Triconex 3700 / 3701?

For Triconex 3700 / 3701, Pass, Fault, and Active LEDs report the module condition on both variants. The voltage range and shunt selection remain wiring and configuration decisions.

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Product Name	Triconex 3700 / 3701 \| TMR differential analog input modules
Item NO.	2918956
Weight	0.1 kg = 0.2205 lb = 3.5274 oz
Category	TRICONEX
Brand	TRICONEX
Creation Time	2026-10-13

Triconex 3700 / 3701 | TMR differential analog input modules Item NO.: 2918956

Triconex 3700 / 3701 | TMR differential analog input modules