Invensys RO3451
Invensys RO3451
Invensys RO3451
Invensys RO3451
Invensys RO3451
Invensys RO3451
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RO3451

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Invensys Triconex RO3451 is a 32-point 24 VDC solid-state relay output module for Trident systems. Its outputs are commoned in pairs and intended for compatible non-critical loads.
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Technical specifications for RO3451

  • Manufacturer:
    Invensys
  • Part Number:
    RO3451
  • Product Family:
    Triconex
  • Product Type:
    Trident 32-Point Solid-State Relay Output Module
  • Stock:
    5
  • Output points:
    32
  • Output technology:
    Solid-state relay
  • Nominal field voltage:
    24 VDC
  • Common arrangement:
    Outputs commoned in pairs
  • Diagnostic feedback:
    Per-output loopback
  • System role:
    Compatible non-critical Trident loads
  • Weight:
    1.36 kg
  • Estimated shipping dimensions:
    4.3x18.8x21.7cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Output Circuit Diagnostic Path Service Control Applications

Features:

  • Voted commands: Three internal channels provide voted data for the output circuits.
  • Loopback diagnostics: Each point supplies feedback for ongoing module diagnostics.
  • Paired commons: Field circuits are organized around output pairs sharing a common.
The module drives compatible non-critical field loads and should not be selected as a generic substitute for every Trident output type.

Paired commons and field power define a troubleshooting boundary that extends beyond the plug-in module.

Command, loopback and field measurements should be compared before the source of an output failure is assigned.

Apter Power supports Invensys Triconex RO3451 Trident Solid-State Relay Output Module quotations, technical documents, and field-circuit matching.
Invensys RO3451 Trident 32-Point Solid-State Relay Output Module Manuals,Datasheets,Link
Important Notice: Manuals and supporting documents are provided for identification and engineering review. Confirm the complete product code before ordering.
  • Point map: Keep each output tied to its load and terminal record.
  • Paired commons: Trace both points sharing a common before disturbing field wiring.
  • Load suitability: Confirm the installed device fits the documented non-critical output role.
  • Protective path: Include field fusing and protective devices in point-level troubleshooting.
  • Command state: Verify the control application is requesting the expected output.
  • Loopback state: Compare internal feedback with the command for the affected point.
  • Field state: Measure power and load response at the termination separately.
  • Shared-fault clue: Treat paired output failures as a reason to inspect their common field circuitry.
  • Module role: Record the active or spare position before removal.
  • Mechanical keying: Preserve the qualified baseplate keying for this output type.
  • Post-exchange check: Confirm paired circuits and diagnostic recovery after approved replacement.
  • Annunciation: Drives compatible panel indicators and similar non-critical loads.
  • Auxiliary outputs: Supports documented 24 VDC auxiliary control duties.
  • Legacy continuity: Maintains installed Trident relay-output configurations during service.
Description
The Invensys Triconex RO3451 supplies 32 solid-state relay outputs for compatible 24 VDC Trident applications. Output points are commoned in pairs, and the OEM positions this module for non-critical loads that do not suit the high-side solid-state output arrangement.

Three internal command channels feed RO3451, while voted data drives the 32 relay outputs and per-point loopback supports ongoing diagnostics. This architecture helps distinguish a commanded output state from a field-side wiring or load problem during troubleshooting.

Before exchanging RO3451, retain the baseplate keying, active or spare role, paired commons, point-to-load map, field-power arrangement and diagnostic history. Apter Power can assist with quotation, official documentation and Trident output-configuration review.
Alternative Names
RO 3451 3451 Triconex RO3451 Invensys RO3451 RO-3451 3451 relay output R03451 Trident 3451
Technical notes
RO3451 combines voted command processing with per-output loopback, but the field circuit still depends on paired commons, 24 VDC power, termination, protection, cabling, and load condition. Preserve baseplate keying and the point map, then compare module diagnostics with field measurements before assigning the fault to the output module.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What type of load should be reviewed before using RO3451?
Confirm that the point is a compatible non-critical 24 VDC load and that the paired-common arrangement suits the field circuit.
Why can RO3451 indicate an output state while the field device remains inactive?
The command and loopback path can be healthy while field power, a paired common, termination, protective device, cable or load has failed.
How are the outputs on RO3451 grouped?
The 32 solid-state relay points are commoned in pairs, so each paired field circuit should be traced before wiring changes are made.
What does loopback contribute to RO3451 diagnostics?
Per-output loopback lets the module compare commanded and sensed output behavior, but it does not replace measurement at the field load.
Can RO3451 be exchanged without checking baseplate keying?
No. Module type, mechanical keying, active or spare role, field-power path and approved maintenance procedure should all be confirmed first.
What should accompany an RFQ for RO3451?
Provide the full label, baseplate position, point and paired-common map, diagnostic indications, field voltage, quantity and destination.