Triconex 3625A TMR Digital Output Module
A 32-point, 24 VDC supervised or non-supervised TMR output module for Tricon safety and critical-control systems.
Product Overview
3625A is a 32-point triple-modular-redundant digital output module for Tricon systems. Each point can be configured for supervised operation, supporting line-fault detection in energize-to-trip and de-energize-to-trip applications.
The 3625A separates field power into groups of 16 points while maintaining a common return. It is compatible with the applications of the earlier 3625 module, subject to Tricon v10.2-or-later system and termination-panel requirements.
Performance
- Thirty-two commoned outputs operate from a nominal 24 VDC field supply.
- Maximum output current is 1.70 A ±10% per point, with 5 A surge for 7 ms.
- Output switches are self-protected against overvoltage, overtemperature and overcurrent.
- Per-point supervision and programmable short/open-circuit thresholds support field-loop diagnostics.
- PASS, FAULT, LOAD and ACTIVE module indicators combine with one state indicator and one load alarm per point.
Technical Details
| Manufacturer | Schneider Electric / Triconex |
|---|---|
| Model | 3625A |
| Product Family | Tricon |
| Module Type | TMR supervised or non-supervised digital output |
| Output Signals | 32, commoned |
| Nominal Field Voltage | 24 VDC |
| Recommended Voltage Range | 16–32 VDC |
| Maximum Voltage | 36 VDC |
| Logic Power | Less than 13 W |
| Maximum Point Current | 1.70 A ±10% |
| Surge Current | 5 A for 7 ms |
| Total Module Output | 10 A per termination panel |
| Minimum Required Load | 10 mA |
| Output Leakage | 2.0 mA at 24 VDC; 2.5 mA at 32 VDC in the v9–v11 guide table |
| System-to-Field Isolation | 1,500 VDC minimum |
| Point Supervision | Programmable per point |
| Diagnostic Toggle Rate | Every 60 ms maximum |
| Diagnostic Glitch | 2 ms maximum; 200 μs typical |
| Field Power Grouping | Groups of 16 points, separated by termination panels; common return |
| System Compatibility | Tricon v10.2 and later |
| Color Code | Dark blue |
System Integration
- Export the TriStation project, I/O configuration, force/bypass status, diagnostics and proof-test record.
- Record the 3625A slot, field termination panels, cables, redundant field supplies and all 32 load assignments.
- Keep independent field-source voltages within the documented tolerance when the four-source arrangement is used.
- Configure supervision and fault thresholds to match each load before enabling the point.
- Complete output forcing controls, loop tests, voting diagnostics and safety validation before closing the work.
Applications
- Emergency shutdown final-element control.
- Fire-and-gas alarm and mitigation outputs.
- Burner management and turbomachinery trip circuits.
- Safety loops that require TMR control and supervised 24 VDC field outputs.
FAQ
What field-power detail makes a 3625A quotation complete?
Provide the termination-panel references, number of independent sources, source voltages, common-return arrangement, total current per panel and all load types.
Can 3625A replace an earlier 3625 module?
The 3625A is application-compatible, but the Tricon system must meet the v10.2-or-later requirement and the field-power grouping, panels, cables and project must be reviewed.
How should 3625A supervision be commissioned?
Set thresholds for the actual load, then prove healthy, open-circuit and short-circuit states while confirming the intended alarm and safety response.
Why must four field supplies feeding 3625A be closely matched?
The documented arrangement requires source voltages within 5% of the highest supply; larger differences can cause voter faults and alarms even if outputs continue operating.
What records should close a 3625A replacement?
Retain module and panel identities, project checksum, supervision settings, field-current results, diagnostic status, bypass/force history and proof-test approval.
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