Triconex 3625A Digital Output Module

Overview

The Triconex 3625A is a 32-point TMR Supervised or Non-Supervised Digital Output Module, designed for critical control applications. These modules work with 16-point commoned field termination panels and are suitable for energize-to-trip and de-energize-to-trip applications. You can only install the 3625A module in Tricon v10.2 and later systems.

The 3625A module separates the field power supply into groups of 16 points, maintaining a common return. This modification doesn’t affect its compatibility with all applications that use the 3625 module.

Power Requirements

Invensys recommends wiring the termination panels in parallel and powering them from a single, redundant field power source. Although you can power the module from four independent field power sources, all sources must maintain a voltage within 5% of the highest voltage supplied. Failing to follow this guideline may cause the module to operate with voter faults and trigger alarms.

3625A Digital Output Specifications

Feature	Specification
Color Code	Dark blue
Number of Output Signals	32, commoned
Recommended Voltage Range	16-32 VDC
Nominal Voltage	24 VDC
Maximum Voltage	36 VDC
Logic Power	< 13 watts
Current Ratings (Maximum)	1.70 ±10% amps/point, 5 amps surge/7 ms
Total Module Output Current	10 amps/termination panel
Minimum Required Load	10 mA
Maximum Output Leakage	2.0 mA @ 24 VDC, 2.5 mA @ 32 VDC
Fuses (Field Termination Module)	Not required; output switches self-protected
Status Indicator: On or Off State	1 per point
Status Indicator: Module Status	Pass, Fault, Load, Active
Status Indicator: Field Alarm	Load (1 per point)
System-to-Field Isolation	1,500 VDC minimum
Point Supervision	Programmable per point
Short/Open Circuit Detection	Programmable per supervised point
Output Diagnostic Fault Coverage	See detailed coverage
Maximum Output Toggle Rate	Every 60 ms
Diagnostic Glitch Duration	2 ms maximum, 200 µs typical
On-State Voltage Drop	< 0.16 VDC typical @ 250mA; < 1.12 VDC typical @ 1.7A
With External Termination (10-foot Cable)	< 1.15 VDC typical @ 250mA; < 3.33 VDC typical @ 1.7A
With External Termination (99-foot Cable)	< 2.71 VDC typical @ 250mA; < 8.92 VDC typical @ 1.7A
Inductive Kick-Back Protection	Output switches self-protected

Notes:

Field Power Configuration: For the 3625A module, group the field power into sets of 16 points with separate termination panels. Make sure to power all points, including unused ones on non-commoned panels.
Output Toggle Rate: The maximum output toggle rate is 60 ms. This rate ensures proper I/O diagnostics and helps detect faults effectively.
Installation: The 3625A module works with low-density systems upgraded to v10.2.x or later. For more details, consult “Appendix I, Low-Density Chassis I/O Module Compatibility” in the Field Terminations Guide for Tricon v9–v11 Systems.

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