Model TU551-CS31 identifies the ABB CS31 interface terminal unit with screw terminals. An ABB terminal unit providing the documented CS31 bus interface plus 30 screw terminals for S500 CS31 communication interface modules with 24 V DC signals, while allowing the inserted module to be removed without disturbing field wiring when the approved procedure permits.
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TU551-CS31Brand/ Manufacturer:
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CS31 interface terminal unit with screw terminalsMatch model TU551-CS31, article 1SAP210600R0001, AC500 S500 CS31 terminal units, CS31 bus interface plus 30 screw terminals and the approved host or installation arrangement. Screw-terminal CS31 version; TU552-CS31 uses spring terminals.
Engineering note: After installing TU551-CS31, verify its exact mechanical seating and interface, then record the functional result for S500 CS31 communication interface modules with 24 V DC signals.
Installation planning
Confirm TU551-CS31 enclosure protection, cabinet heat dissipation, mounting arrangement and documented environmental limits before installation.
Storage and handling
Keep TU551-CS31 protected from moisture, contamination, impact and electrostatic discharge from receipt through installation.
Send the exact TU551-CS31 model, required quantity, destination and installed hardware details. Request current nameplate photographs and confirm compatibility before ordering.
Use TU551-CS31 where the project specifically requires S500 CS31 communication interface modules with 24 V DC signals. The verified selection basis is screw-terminal CS31 unit with integrated end-of-line resistor connections.
Select article 1SAP210600R0001 only after confirming 24 V DC UP and ZP process supply, the physical interface and the exact neighboring equipment recorded in the project.
Lifecycle assessment: Confirm current availability and lifecycle status against the latest manufacturer notice for the exact article number.
Ordering check: Verify the full model, article number, hardware revision and supported project release before purchasing.
Complete these six checks against the current project documentation and the official exact-model record.
Keep the TU551-CS31 nameplate or package label, article 1SAP210600R0001, wiring or application drawing and evidence of the selected AC500 S500 CS31 terminal units variant together.
Record the installed location, mating hardware or bundle, inspection result and final acceptance status specifically for TU551-CS31.
Use model TU551-CS31 with article 1SAP210600R0001; the manufacturer designation is CS31 interface terminal unit with screw terminals.
The official product record gives TU551-CS31 signal terminals as 30. Preserve it in the project hardware file.
Enter CS31 for bus when reconciling the exact TU551-CS31 configuration.
TU551-CS31 manufacturer data lists bus pins as R1, R2, B1, B2 and functional earth; keep that exact value with the CS31 interface terminal unit with screw terminals record.
Use 24 V DC for TU551-CS31 supply; it is the value stated for this exact article.
The TU551-CS31 CS31 interface terminal unit with screw terminals is documented with host modules of S500 CS31 communication interfaces with 24 V DC signals.
Screw-terminal CS31 version; TU552-CS31 uses spring terminals. Verify TU551-CS31, article 1SAP210600R0001, and the installed arrangement before approval.
Match CS31 bus interface plus 30 screw terminals to the inserted module, terminal style, process supply and bus connection. The exact-model selection basis is screw-terminal CS31 unit with integrated end-of-line resistor connections.
Measure or verify 24 V DC UP and ZP process supply for TU551-CS31 before wiring, installation or energization. Retain screw-terminal CS31 unit with integrated end-of-line resistor connections as the model-specific basis.
Record TU551-CS31 module seating, terminal condition, process-supply checks, bus continuity and the affected-channel result. Screw-terminal CS31 version; TU552-CS31 uses spring terminals.
Both PDFs are hosted on dcsmodule.com and prepared from the exact official ABB manufacturer records cited on this page. They are independent Moore Automation references, not manufacturer-issued manuals.
Exact article identity, application context, procurement checks, replacement guidance and manufacturer-source trace.
OPEN SITE PDF → TECHNICAL DATAModel-specific specifications, compatibility boundaries, installation checks, commissioning guidance and official-source trace.
OPEN TECHNICAL DATA PDF →Ask for the exact TU551-CS31 nameplate, hardware identification, revision, connector condition and packaging. Verify that the supplied unit carries the exact TU551-CS31 identification.
| Specification | Official identification / verification note |
|---|---|
| Model | TU551-CS31 |
| Article number | 1SAP210600R0001 |
| Lifecycle | Active |
| Terminal style | Screw |
| Signal terminals | 30 |
| Bus | CS31 |
| Bus pins | R1, R2, B1, B2 and functional earth |
| Supply | 24 V DC |
| Host modules | S500 CS31 communication interfaces with 24 V DC signals |
| Module replacement | Field wiring remains on the terminal unit |
Technical-data note: Values shown here are limited to the exact model and explicitly documented assembly. Confirm field conditions and the applicable project release before installation.
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Send the full model, quantity and destination for quotation and availability checking.
Moore Automation kept the TU551-CS31 request focused on article identity and the documented screw-terminal CS31 unit with integrated end-of-line resistor connections, which made our internal review straightforward.
Tiffany separated the TU551-CS31 commercial quote from the required CS31 bus interface plus 30 screw terminals checks and asked for clear label evidence before confirmation.
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