Invensys Triconex 3703E Isolated Analog Input Module

Product Description

The Triconex 3703E is a 16-channel isolated analog input module designed for Tricon v9-v10 systems. It receives differential analog signals and provides channel-isolated measurement for system processing. Each channel supports configurable 0-5 VDC or 0-10 VDC input ranges, with 12-bit resolution and an input update time of less than 50 ms. Furthermore, its configurable signal detection and current measurement capability support different input requirements.

Input Channels and Signal Processing

The 3703E provides 16 differential, isolated input channels. Each channel accepts voltage signals within the configured 0-5 VDC or 0-10 VDC range. The TriStation configuration determines the operating range for each channel.

In addition, the module supports 0-20 mA current measurement through a 250 Ohm shunt. This allows current-loop signals to be measured through the module's input circuitry. The specified input resistance is at least 30 MOhm.

Isolation and Measurement Performance

Channel isolation helps separate individual input circuits and limits the effect of electrical interference between signal sources. The module also specifies a maximum common-mode range of +/-200 VDC and common-mode rejection of at least -90 dB at 60 Hz.

The 12-bit resolution defines the digital measurement increments, while the accuracy specification describes the maximum measurement deviation relative to full-scale range under the stated temperature conditions. Meanwhile, the input update time of less than 50 ms indicates the time required to refresh input data.

Technical Specifications

Configuration and Replacement Considerations

Before replacing an existing 3703E module, verify the complete model number and the physical configuration of the installed module. In particular, check the following details:

• Slot keying: Top key 005 and bottom key 006.
• Input range: Confirm whether the application requires 0-5 VDC or 0-10 VDC.
• Signal type: Check whether the field signals use voltage inputs or 0-20 mA current measurement.
• Channel configuration: Verify the TriStation settings and the required channel assignments.
• Termination assembly: Confirm that the existing termination assembly matches the required module configuration.

Therefore, matching the model number alone is not sufficient to confirm a replacement. Verify the electrical configuration and termination arrangement before installation.

Frequently Asked Questions

Q: How many analog input channels does the Triconex 3703E provide?

A: The 3703E provides 16 differential, isolated analog input channels. Each channel supports the configured voltage input range.

Q: Can the 3703E measure 0-20 mA signals?

A: Yes. The module supports 0-20 mA measurement using a 250 Ohm shunt. Verify the input configuration before connecting current-loop signals.

Q: What should be checked before replacing a 3703E module?

A: Verify the Tricon system version, top and bottom slot keys, input signal range, termination assembly, and TriStation channel configuration. These details help establish whether the replacement matches the existing installation.

Other Attributes

• Country of Origin:  USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of Triconex

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