Allen-Bradley 1769-L36ERMS/A CompactLogix Safety PLC Processor | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1769-L36ERMS/A is a CompactLogix 5370 L3 Safety PLC Processor from Rockwell Automation, designed for integrated motion, safety, and standard control on a single EtherNet/IP network. As an authorized distributor and sourcing partner, Konmask.com supplies genuine, tested, and refurbished units with full traceability — ideal for OEM builds, MRO replacements, and system upgrades.
Technical Specifications
- Part Number: 1769-L36ERMS/A
- Series: CompactLogix 5370 L3
- Manufacturer: Allen-Bradley / Rockwell Automation
- Controller Type: Safety PLC Processor (SIL 2 / PLd capable)
- User Memory: 3 MB
- I/O Capacity: Up to 256 local I/O points; 16 axes of motion
- Communication: Dual-port EtherNet/IP (DLR capable)
- Safety Protocol: CIP Safety™
- Programming Software: Studio 5000 Logix Designer v21+
- Power Supply: 1769-PA4 / 1769-PB4 (sold separately)
- Operating Temperature: 0 °C to 60 °C
- Certifications: UL, CE, cUL, TÜV SÜD (SIL 2)
- Dimensions (H × W × D): 118 × 35 × 130 mm
- Weight: ~2,150 g (with chassis)
Compatible Replacement & Equivalent Models
The table below lists direct replacements and functional equivalents for the 1769-L36ERMS/A. Always verify firmware compatibility and I/O count before substitution.
| Model | Memory | Safety | Notes |
|---|---|---|---|
| 1769-L36ERMS/B | 3 MB | Yes | Revised /B series — direct drop-in replacement |
| 1769-L33ERMS | 2 MB | Yes | Lower memory; same safety architecture |
| 1769-L30ERMS | 1 MB | Yes | Entry-level safety; reduced I/O capacity |
| 1769-L36ERM | 3 MB | No | Standard (non-safety) equivalent; same form factor |
| 1769-L33ERM | 2 MB | No | Standard controller; lower cost alternative |
| 5069-L306ERMS2 | 3 MB | Yes | CompactLogix 5380 next-gen upgrade path |
Need help selecting the right replacement? Contact us at support@konmask.com.
Why Choose the Original 1769-L36ERMS/A
- Integrated Safety: CIP Safety on EtherNet/IP eliminates separate safety PLCs, reducing panel footprint and wiring cost.
- Proven SIL 2 / PLd Rating: TÜV-certified for use in safety-critical applications without additional validation overhead.
- Dual-Port DLR Ethernet: Device Level Ring topology provides network redundancy without managed switches.
- 16-Axis Integrated Motion: Drives servo and variable-frequency drives directly over EtherNet/IP — no dedicated motion network required.
- Compact Form Factor: 35 mm wide module fits space-constrained panels while delivering full L3-class performance.
- Long-Term Rockwell Support: Active product with firmware updates and global technical support through 2030+.
Typical Applications
- Machine safety guarding and light curtain integration (SIL 2)
- Packaging lines with servo motion and safety interlocks
- Conveyor and material handling systems
- Automotive assembly and press control
- Food & beverage processing with washdown-rated I/O
- Oil & gas skid control with remote I/O over EtherNet/IP
- Water/wastewater SCADA edge controllers
System Compatibility
- I/O Modules: 1769 CompactLogix I/O (1769-IQ16, 1769-OB16, 1769-IF4, etc.)
- Safety I/O: 1791DS, 1732DS ArmorBlock Guard I/O over CIP Safety
- HMI: PanelView Plus 7 / PanelView 800 via EtherNet/IP
- Drives: PowerFlex 525 / 527 / 755 over EtherNet/IP
- Software: Studio 5000 Logix Designer v21 and above
- SCADA/DCS: FactoryTalk View SE, Ignition, Wonderware via OPC-UA or EtherNet/IP
Selection Guide
Use the criteria below to confirm the 1769-L36ERMS/A is the right choice — or identify a better-fit alternative:
- Safety required (SIL 2)? → Choose any 1769-L3xERMS variant. If no safety needed, use 1769-L3xERM.
- Memory > 3 MB needed? → Upgrade to 5069-L306ERMS2 (CompactLogix 5380, up to 10 MB).
- Axes > 16? → Consider ControlLogix 5580 (1756-L8xERS) for up to 100 axes.
- Budget-constrained MRO? → 1769-L33ERMS offers 2 MB safety at lower cost.
- New project / greenfield? → Evaluate 5069-L3x series for improved performance and longer lifecycle.
- Existing 1769 chassis? → 1769-L36ERMS/B is a certified drop-in replacement for /A revision.
Quality Assurance & Sourcing
- Genuine & Tested: All units undergo functional power-on testing and firmware verification before shipment.
- Traceability: Serial number and revision documented; certificates of conformance available on request.
- Condition Options: New-in-box (NIB), factory-refurbished, and surplus stock available — specify at inquiry.
- Lead Time: In-stock units ship within 1–3 business days; sourced units 5–15 business days.
- Warranty: 12-month warranty on all units; extended warranty available.
- Export Compliance: ECCN classification confirmed; export documentation provided for international orders.
How to Order
- Add the 1769-L36ERMS/A to your cart and proceed to checkout, or
- Email support@konmask.com with your quantity, required condition, and delivery timeline.
- For bulk orders (>5 units) or project BOM support, request a formal quotation — we respond within 4 business hours.
- Payment: T/T, PayPal, credit card, and LC accepted.
- Shipping: DHL / FedEx / UPS express worldwide; sea freight available for large orders.
Replacement & Compatibility FAQ
Q: Is the 1769-L36ERMS/B a direct replacement for the /A revision?
A: Yes. The /B revision is firmware-compatible and mechanically identical. No hardware changes required; re-download your program from Studio 5000.
Q: Can I use the 1769-L36ERMS/A without safety I/O?
A: Yes. The safety features are optional — the controller operates as a standard CompactLogix if no CIP Safety devices are connected.
Q: What is the maximum local I/O for this processor?
A: Up to 256 local I/O points across a maximum of 16 expansion modules in the local chassis.
Q: Does this module support EtherNet/IP Device Level Ring (DLR)?
A: Yes. The dual-port embedded switch supports DLR for ring topology redundancy without a managed switch.
Q: What Studio 5000 version is required?
A: Minimum v21. Rockwell recommends using the latest available version for full feature support and security patches.
Q: Can Konmask supply the matching 1769 power supply and I/O modules?
A: Yes. We supply complete 1769 CompactLogix system components. Contact us with your full BOM for a consolidated quote.
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