Genuine Allen-Bradley 1757-SRM System Redundancy Module | ControlLogix – Verified Source
The Allen-Bradley 1757-SRM System Redundancy Module is a mission-critical component within Rockwell Automation’s ControlLogix redundancy architecture, designed to synchronize primary and secondary controller chassis in high-availability industrial environments. Its role in continuous process control — across oil & gas, power generation, water treatment, and advanced manufacturing — makes it one of the most operationally sensitive modules in the AB ecosystem. Due to its high unit value and limited availability through standard distribution channels, the 1757-SRM is a frequent target for counterfeit substitution, grey-market diversion, and refurbished units misrepresented as new. Purchasing from unverified sources carries serious risks: firmware incompatibility, undisclosed repair history, and catastrophic redundancy failure at the worst possible moment.
Konmask sources the 1757-SRM exclusively through traceable, documented supply chains. Every unit we ship undergoes physical authenticity verification — label inspection, date-code cross-referencing, and firmware version validation against Rockwell Automation’s official release records. We do not mix genuine stock with refurbished or remanufactured units. Our commitment is straightforward: every 1757-SRM leaving our warehouse is authentic, tested, and fully documented. Buyers receive a verified, genuine Allen-Bradley module backed by Konmask’s quality assurance process and traceability records.
Technical Specifications
| Part Number | 1757-SRM |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Series | ControlLogix Redundancy |
| Function | System Redundancy Module — synchronizes primary and secondary chassis |
| Chassis Compatibility | ControlLogix 1756-series chassis |
| Communication Interface | Dedicated fiber-optic redundancy link (RMCT cable) |
| Redundancy Type | Hot-standby (bumpless switchover) |
| Switchover Time | Typically <10 ms (application-dependent) |
| Power Consumption | Supplied via chassis backplane |
| Operating Temperature | 0 °C to 60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to 85 °C |
| Relative Humidity | 5% to 95% non-condensing |
| Dimensions (H × W × D) | Standard 1756 single-slot module form factor |
| Weight | Approx. 450 g |
| Certifications | UL, CE, cUL |
| Country of Origin | USA |
Specifications verified against Allen-Bradley / Rockwell Automation official documentation (Publication 1757-UM536).
Our 4-Step Quality Verification Process
Every 1757-SRM unit processed by Konmask passes through a structured, documented inspection protocol before dispatch:
Step 1 — Physical & Label Authenticity Inspection
Each module is examined for genuine Rockwell Automation labeling: holographic security elements, correct font rendering, accurate part number and revision markings, and factory-sealed packaging integrity. Units with tampered seals, re-labeled housings, or inconsistent date codes are immediately quarantined and rejected.
Step 2 — Firmware & Revision Verification
Module firmware version is cross-referenced against Rockwell Automation’s official release matrix. We confirm the revision level is consistent with the stated manufacture date and that no unauthorized firmware modifications are present.
Step 3 — Functional Bench Test
Where applicable, modules are powered and tested for basic communication response and self-diagnostic pass status. Test results are logged and available upon request as a formal Test Report.
Step 4 — Documentation Package Assembly
Prior to shipment, each order is accompanied by a complete documentation package, which may include: Certificate of Conformance (COC), Packing List with serial/lot traceability, Country of Origin (COO) Declaration, and Test Report. Customers may request any or all documents at the time of order.
Key Features & Benefits
- Bumpless Hot-Standby Switchover: Achieves redundancy switchover in typically under 10 ms, meeting IEC 61511 SIL-rated process continuity requirements for safety-instrumented systems.
- Fiber-Optic Redundancy Link: Dedicated RMCT fiber connection eliminates Ethernet contention and provides electrically isolated, high-speed chassis synchronization immune to EMI — critical in heavy industrial environments.
- Full ControlLogix Ecosystem Integration: Designed exclusively for the 1756-series chassis, ensuring native compatibility with Logix 5000 firmware, RSLogix 5000 / Studio 5000 programming environments, and existing I/O infrastructure.
- Transparent Crossload Synchronization: Continuously mirrors controller memory, I/O state, and program data between primary and secondary chassis without operator intervention, compliant with ISA-18.2 alarm management continuity standards.
- Deterministic Fault Detection: Onboard diagnostics detect communication faults, chassis mismatches, and firmware discrepancies in real time, providing actionable fault codes via RSLogix diagnostics.
- Long-Term Availability & Lifecycle Support: Konmask maintains traceable stock of legacy and current-revision 1757-SRM units, supporting plant operators managing extended asset lifecycles beyond standard Rockwell product lifecycle phases.
Typical Applications
- Oil & Gas: Pipeline SCADA systems and compressor station control requiring continuous uptime and SIL-2 redundancy compliance.
- Power Generation: Turbine governor and boiler management systems where unplanned shutdowns carry multi-million-dollar operational penalties.
- Water & Wastewater Treatment: Municipal SCADA architectures mandating 24/7 availability for regulatory compliance and public safety.
- Chemical & Petrochemical Processing: Batch and continuous process control loops where controller failure triggers hazardous material release risk.
- Automotive Manufacturing: High-throughput assembly line PLCs where downtime directly impacts production OEE targets.
- Pharmaceutical & Life Sciences: FDA 21 CFR Part 11-compliant control systems requiring validated, traceable hardware with full documentation.
Compatible System Components
- 1756-L6x / 1756-L7x / 1756-L8x ControlLogix Controllers
- 1756-A7 / 1756-A10 / 1756-A13 / 1756-A17 ControlLogix Chassis
- 1756-PA72 / 1756-PB72 / 1756-PH75 Power Supplies
- 1757-RMCT / 1757-RMCT2 Redundancy Module Cable (fiber-optic link)
- 1756-EN2T / 1756-EN3TR EtherNet/IP Communication Modules
- 1756-DNB DeviceNet Bridge Module
- Studio 5000 Logix Designer (v20.0 and above recommended)
- ControlLogix Redundancy Enhanced (CLXE) firmware bundles
Global Sourcing & Shipping Capabilities
Konmask serves industrial buyers across Asia-Pacific, the Middle East, Europe, and the Americas. Our primary shipping hubs are located in China, with express freight options via DHL, FedEx, and UPS for time-critical orders.
- Packaging Standard: Anti-static ESD shielding bag → foam-lined inner box → double-wall corrugated outer carton. Fragile/high-value modules are additionally secured with corner protectors and moisture-barrier desiccant packs.
- Lead Time: In-stock units typically ship within 1–3 business days of order confirmation. Lead time for sourced units is communicated at quotation stage.
- Export Documentation: Commercial Invoice, Packing List, COO Declaration, and HS Code classification (8537.10) provided as standard for all international shipments.
- Freight Insurance: Available upon request for high-value shipments. Recommended for orders exceeding USD 2,000.
Certifications & Compliance Statement
- UL Listed (Underwriters Laboratories)
- CE Marked (European Conformity — EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU)
- cUL (Canadian Standards)
- RoHS Compliant (Directive 2011/65/EU)
Konmask Quality Commitment: All products sold by Konmask are represented accurately as to their condition, revision level, and origin. We do not knowingly sell counterfeit, unauthorized reproduction, or misrepresented goods. Buyers who receive a unit that does not match its stated specification are entitled to a full replacement or refund under our quality assurance policy. Certificate of Conformance and supporting documentation are available for every shipment upon request.
How to Order
Step 1 — Submit Your Inquiry: Contact us via the product page, email support@konmask.com, or WhatsApp/WeChat at +0086 19859288691 with your required part number, quantity, and target delivery date.
Step 2 — Receive Quotation & Confirm: Our team responds within 24 hours with pricing, availability, lead time, and documentation options. Upon confirmation, a Proforma Invoice is issued.
Step 3 — Payment, Dispatch & Documentation: After payment clearance, your order is picked, inspected, packed, and dispatched with a full documentation package. Tracking information is provided within 24 hours of shipment.
Sample units and pre-shipment Test Reports are available for qualified buyers on request. Contact us to discuss your specific requirements.
Authenticity & Trust FAQ
Q: How can I verify that the 1757-SRM I receive is a genuine Allen-Bradley unit?
A: Every unit shipped by Konmask includes physical label verification, firmware revision confirmation, and a Certificate of Conformance. You can cross-reference the module’s date code and serial number against Rockwell Automation’s product traceability resources, or contact your local Rockwell distributor for secondary verification. We welcome and support buyer-side verification.
Q: What is Konmask’s warranty policy for the 1757-SRM?
A: Konmask provides a quality assurance guarantee covering authenticity and condition as described. If a unit is found to be non-conforming upon receipt — wrong revision, undisclosed damage, or authenticity concern — we will arrange replacement or full refund. Specific warranty terms are confirmed at the quotation stage based on unit condition (new, surplus-new, or tested-used).
Q: Can Konmask provide a Test Report or inspection photos before shipment?
A: Yes. Pre-shipment inspection photos, functional test reports, and Certificate of Conformance documents are available upon request for all orders. For large-quantity or high-value orders, we can arrange third-party inspection coordination. Please specify your documentation requirements when placing your inquiry.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
