Description
Emerson SS6501T01 | DeltaV SIS Redundant CSLS Assembly | Electronic Marshalling
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Emerson |
| Model | SS6501T01 |
| System | DeltaV SIS |
| Architecture | Electronic Marshalling |
| Product Type | Redundant CSLS Assembly |
| Network Medium | Twisted copper |
| CSLS Quantity | 2 |
| CSLS Carrier | Included |
| Power Modules | 2 |
| Safety Network Ports | 2 single ports |
| Power Plugs | 2 |
| Associated I/O | LS-CHARMs |
| Safety Function | Safety logic solving |
| Configuration | Redundant |
| Replacement Scope | Complete CSLS assembly |
The key distinction is the assembly level. Emerson’s ordering table separates SS6501T01 from SS6501T05, which is the redundant CSLS carrier assembly without the two CSLSs and power modules. SS6502 is the separate redundant CSLS package containing two CSLSs and two power modules.
Product Introduction
The Emerson SS6501T01 is a redundant CHARMs Smart Logic Solver (CSLS) assembly used in the DeltaV Safety Instrumented System. It forms part of the Electronic Marshalling architecture, providing the carrier, redundant logic-solvers, redundant power modules, and copper safety-network interfaces required for the CSLS portion of a safety system.
This distinction matters during maintenance because SS6501T01 is a complete assembly, not simply one CSLS processor. A replacement must account for the carrier, two CSLS units, power modules, safety-network ports, and the connected LS-CHARM configuration.

SS6501T01
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
A CSLS assembly failure can affect multiple safety I/O functions at once. Troubleshooting should therefore distinguish between the CSLS processors, carrier, power modules, safety-network connections, LS-CHARMs, and DeltaV SIS configuration rather than assuming that a failed field signal means an individual I/O module has failed.
Typical Applications
- DeltaV SIS safety instrumented systems
- Electronic Marshalling safety I/O architectures
- Emergency shutdown and process protection systems
- Industrial safety logic applications using LS-CHARMs
Technical Pitfalls to Avoid
- Do not identify SS6501T01 as an 8-channel digital input module.
Some secondary listings make this claim, but Emerson’s ordering documentation clearly identifies as a Redundant CSLS Assembly – Copper. The assembly contains two CSLSs and two power modules. - Do not confuse with SS6501T05.
SS6501T05 is the Redundant CSLS Carrier Assembly – Copper. It does not represent the same complete hardware package as . - Verify the copper safety-network architecture.
The ordering description specifically calls for two single Safety Network Ports for twisted copper. Do not substitute a different network-port arrangement simply because the CSLS processor itself appears compatible. - Check the complete redundant assembly before replacement.
Confirm both CSLS units, both power modules, carrier, network ports, and power plugs are present and correctly configured. Replacing only one component may not reproduce the original assembly.
Related Products
- Emerson SS6501T05 — Redundant CSLS Carrier Assembly – Copper; carrier-only configuration.
- Emerson SS6502 — Redundant CSLS package containing two CSLSs and two power modules.
- Emerson SS3001 — Redundant SZ Controller Assembly for DeltaV SIS.
- Emerson SS3003 — Horizontal-carrier redundant SZ Controller Assembly.
- Emerson SS3002 — Keylock vertical redundant SZ Controller Assembly.
- Emerson SS3004 — Keylock horizontal redundant SZ Controller Assembly.
- Emerson SS4608T01 — CSLS IS-CHARMs baseplate assembly with standard IS-CHARM terminal blocks.
- Emerson LS-CHARM modules — Safety I/O modules used with the CSLS architecture.
- Emerson DeltaV SIS — Safety Instrumented System platform using SZ controllers and CSLS-based architectures.
The Emerson ordering information makes the relationship between these assemblies particularly important: is the complete redundant copper CSLS assembly, while SS6501T05 is the carrier assembly and SS6502 supplies the redundant CSLS/power-module package.
Procurement Check
Before approving an replacement, verify:
- Exact model:
- DeltaV SIS system generation
- Redundant CSLS configuration
- Copper safety-network architecture
- CSLS carrier
- Two CSLS units
- Two power modules
- Two Safety Network Ports
- Two power plugs
- Connected LS-CHARM modules
- Existing safety configuration and application
- Hardware revisions of the installed CSLS units
- Safety-network cabling
- Cabinet power arrangement
- Certification and system revision requirements
Recommended procurement description:
Emerson DeltaV SIS Redundant CSLS Assembly – Copper, Complete Assembly with CSLS Carrier, Two CSLS Units, Two Power Modules, Two Single Safety Network Ports, and Two Power Plugs.
The critical identification point is straightforward: is a complete redundant CSLS assembly for DeltaV SIS Electronic Marshalling, not a conventional I/O module. For replacement work, match the complete assembly configuration and copper safety-network architecture rather than relying on the number alone.
