Allen-Bradley 1791ES-IB16 Ethernet I/P Safety Module | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1791ES-IB16 is a 16-point digital input safety module designed for EtherNet/IP-based safety systems. It is part of Rockwell Automation’s ArmorBlock Guard I/O series, engineered for machine-level safety integration in demanding industrial environments. This page provides full technical specifications, compatible replacement models, application guidance, and sourcing information to help engineers and procurement teams make confident selection decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 1791ES-IB16 |
| Series | ArmorBlock Guard I/O |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Communication Protocol | EtherNet/IP (CIP Safety) |
| I/O Type | 16 × Digital Safety Inputs |
| Input Voltage | 24V DC |
| Safety Rating | SIL 3 (IEC 62061), PLe / Cat. 4 (ISO 13849-1) |
| Housing | IP67 / IP69K rated, metal housing |
| Operating Temperature | -25°C to +70°C |
| Power Supply | 24V DC (separate logic and field power) |
| Connector Type | M12 connectors |
| Dimensions (W×H×D) | Approx. 200 × 60 × 45 mm |
| Weight | Approx. 500 g |
| Certifications | CE, UL, cUL, TÜV |
Compatible Replacement & Equivalent Models
When the 1791ES-IB16 is unavailable or under evaluation, the following models may serve as functional equivalents or replacements. Always verify compatibility with your specific safety system architecture before substitution.
| Model | Manufacturer | Protocol | I/O Points | Safety Level | Notes |
|---|---|---|---|---|---|
| 1791ES-IB16 | Allen-Bradley | EtherNet/IP | 16 DI | SIL 3 / PLe | Original model |
| 1791ES-IB8XOBV4 | Allen-Bradley | EtherNet/IP | 8 DI + 4 DO | SIL 3 / PLe | Mixed I/O variant; check point count |
| TBPN-L1-FDIO1-2IOL | Phoenix Contact | PROFINET | Configurable | SIL 3 / PLe | Protocol differs; gateway required for EtherNet/IP systems |
| FSYS-3000 | Pilz | SafetyNET p / PROFIsafe | Modular | SIL 3 / PLe | Different ecosystem; full system re-evaluation needed |
| XPS-MC16ZP | Schneider Electric | Modbus / Hardwired | 16 DI | SIL 3 / PLe | Hardwired safety relay alternative; no fieldbus |
⚠ Disclaimer: Cross-brand replacements require full safety validation. Konmask.com recommends consulting your safety engineer before substitution.
Why Choose the Original Model
- Native CIP Safety integration — seamless connection to Rockwell GuardLogix and CompactGuardLogix PLCs without additional gateways.
- IP67/IP69K protection — suitable for washdown, outdoor, and harsh factory environments.
- Certified SIL 3 / PLe — meets the highest functional safety standards for machinery and process industries.
- Distributed architecture — mount directly at the machine, reducing cabinet space and wiring costs.
- Rockwell ecosystem compatibility — fully supported in Studio 5000 Logix Designer with pre-built Add-On Profiles (AOPs).
Typical Applications
- Emergency stop (E-stop) monitoring circuits
- Light curtain and safety gate input collection
- Two-hand control and enabling device monitoring
- Conveyor and robotic cell safety interlocking
- Automotive assembly line safety systems
- Food & beverage processing with washdown requirements
- Packaging machinery and press safety circuits
System Compatibility
- Compatible PLCs: Allen-Bradley GuardLogix 5570, GuardLogix 5580, CompactGuardLogix 5370, CompactGuardLogix 5380
- Network: EtherNet/IP with CIP Safety protocol
- Programming Software: Studio 5000 Logix Designer v21.0 and above
- Safety Scanner: Compatible with Rockwell Automation safety network number (SNN) assignment
- Not compatible with: ControlLogix (non-safety), PROFIBUS, DeviceNet (direct connection)
Selection Guide
Use the following criteria to confirm the 1791ES-IB16 is the right module for your application:
- Required safety level: SIL 2 or SIL 3 / PLd or PLe → 1791ES-IB16 qualifies.
- Network protocol: EtherNet/IP (CIP Safety) → direct fit. PROFINET or PROFIsafe → consider Phoenix Contact or Siemens alternatives.
- I/O count: Need exactly 16 digital safety inputs → 1791ES-IB16. Need mixed I/O → consider 1791ES-IB8XOBV4.
- Environment: Outdoor / washdown / high-humidity → IP67/IP69K housing is a key advantage.
- PLC brand: Rockwell Automation ecosystem → original model recommended for full AOP and diagnostic support.
- Budget vs. lead time: If OEM lead time is extended, contact Konmask.com for verified surplus stock options.
Quality Assurance & Sourcing
- All units sourced through authorized distributors or verified surplus channels.
- Each module undergoes visual inspection, label verification, and functional pre-shipment checks.
- Traceability documentation (COO, lot code, date code) available upon request.
- Counterfeit-prevention policy: Konmask.com does not deal in grey-market or unverified product.
- Export compliance: ECCN classification and export license review available for international orders.
How to Order
- Confirm part number: 1791ES-IB16 (include firmware revision if required).
- Specify quantity and required delivery date.
- Contact us via email or phone for stock availability and lead time confirmation.
- Receive formal quotation with unit price, shipping terms (EXW / DDP), and payment options.
- Place order — we ship globally with full tracking and insurance.
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace the 1791ES-IB16 with a standard (non-safety) EtherNet/IP module?
A: No. Safety-rated modules use CIP Safety protocol with dual-channel validation. Standard I/O modules cannot fulfill SIL/PL requirements.
Q: Is the 1791ES-IB16 compatible with older GuardLogix 5560 controllers?
A: Compatibility depends on firmware revision. Consult Rockwell Automation’s Product Compatibility and Download Center (PCDC) for your specific controller firmware.
Q: Can I use this module with a non-Rockwell PLC via EtherNet/IP?
A: CIP Safety requires a certified CIP Safety originator. Third-party PLCs must support CIP Safety as an originator — verify with your PLC vendor before integration.
Q: What is the typical lead time for new stock?
A: New OEM stock lead time varies (typically 8–20 weeks). Konmask.com may have verified surplus stock available for immediate shipment — contact us to check.
Q: Do you provide a warranty?
A: Yes. All products sold through Konmask.com include a minimum 90-day warranty against defects. Extended warranty options are available upon request.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
