32 DIFFERENTIAL INPUTS · 0–5 V OR ±5 V · 10 MS UPDATE
Triconex 3721 Tricon 32-Channel Differential TMR Analog Input Module
A thirty-two-channel DC-coupled differential analog input module for supported Tricon v10.2-and-later systems.
Product Identification
3721 is a TMR analog input module with thirty-two differential, DC-coupled channels. Its selectable voltage ranges are 0 to 5 VDC and −5 to +5 VDC, with 12-bit or 14-bit programmable resolution.
Tricon documentation limits installation to version 10.2 and later systems. A 0–20 mA field signal can be measured when the documented 250 Ω shunt arrangement is used.
Engineering Data
Functions
Differential measurement
Thirty-two DC-coupled channels measure signals independently of a shared signal return.
Programmable resolution
The project selects 12-bit or 14-bit conversion according to the approved configuration.
Voltage or shunt-current use
Native voltage ranges also support a documented 0–20 mA loop through a 250 Ω shunt.
Fast station update
The published input update rate is 10 ms.
About IndustryParts
https://www.industryparts.com/Exact identity before quotation
IndustryParts prepares 3721 enquiries around the complete manufacturer label, requested quantity and destination. For controlled replacements, include the host-system record, field photographs and configuration evidence that apply to this exact execution.
Applications
Differential transmitter inputs
Acquiring supported voltage signals where common-mode performance is important.
Current-loop conversion
Measuring documented 0–20 mA loops through the approved 250 Ω termination.
Tricon v10.2 modernization
Adding or replacing the module only after chassis, software and termination compatibility are confirmed.
Lifecycle
Document
Capture range, resolution, shunt values, channel scaling, alarms and system release.
Wire
Verify polarity, common-mode conditions, termination and point-to-point loop evidence.
Calibrate
Apply known values across each active range and record accuracy, diagnostics and safety response.
FAQ
Which Tricon release supports 3721?
The reviewed Tricon documentation specifies installation in version 10.2 and later systems.
Can 3721 read 0–20 mA directly?
The documented method uses a 250 Ω shunt resistor to convert the current signal for the voltage input.
What should accompany a 3721 enquiry?
Provide the full label, system release, slot, field termination, selected range, resolution, shunt values and channel map.
Why is common-mode voltage important for 3721?
The published input common-mode range is −12 to +12 V peak; exceeding it can compromise proper module operation.
How should 3721 be accepted after replacement?
Inject controlled values on all active channels and verify scaling, diagnostics, alarm thresholds and every affected safety action.
Send the complete 3721 label, requested quantity and destination.
