Allen-Bradley 1797-PS2E2 FLEX Ex Power Supply Module | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1797-PS2E2 is a Rockwell Automation FLEX Ex series intrinsically safe power supply module designed for hazardous-area I/O systems. It provides isolated 24 V DC power to FLEX Ex I/O modules in Zone 1 / Zone 2 (ATEX / IECEx) environments, making it a critical component in process automation and safety-critical control architectures.
Technical Specifications
- Part Number: 1797-PS2E2
- Series: FLEX Ex (1797)
- Manufacturer: Allen-Bradley / Rockwell Automation
- Function: Intrinsically Safe Power Supply Module
- Output Voltage: 24 V DC (isolated)
- Hazardous Area Rating: ATEX Zone 1 / Zone 2, IECEx
- Backplane Compatibility: 1797 FLEX Ex backplane
- Mounting: DIN rail via FLEX Ex backplane
- Weight: Approx. 2.98 kg (module + packaging)
- Country of Origin: USA
Compatible Replacement & Equivalent Models
When sourcing a replacement for the 1797-PS2E2, the following models offer functional compatibility or serve as direct substitutes depending on your system configuration:
- 1797-PS2E2 (same PN, new/refurbished) — Direct drop-in replacement
- 1797-PS1 — Standard FLEX Ex power supply (non-isolated variant); verify voltage requirements before substitution
- 1797-PS2 — Predecessor model; check firmware and backplane revision compatibility
- Pepperl+Fuchs KFD2-STC4-Ex1.20P — Third-party IS power conditioner for cross-brand migration projects
- MTL5000 Series IS Power Supplies — Alternative for Eaton MTL-based FLEX Ex migrations
Note: Always verify ATEX/IECEx certification numbers and backplane revision before installing any replacement module in a certified hazardous area.
Why Choose the Original 1797-PS2E2
- ✅ Certified IS performance — Factory-certified ATEX/IECEx ratings maintained without re-certification
- ✅ Seamless backplane integration — Plug-and-play with existing 1797 FLEX Ex backplanes
- ✅ Rockwell Studio 5000 / RSLogix 5000 compatible — No additional configuration required
- ✅ Isolated 24 V DC output — Protects field devices from ground loops and transients
- ✅ Long lifecycle support — Backed by Rockwell Automation’s global service network
Typical Applications
- Oil & gas upstream / midstream process control (Zone 1 / Zone 2)
- Chemical and petrochemical plant automation
- Pharmaceutical manufacturing (ATEX-compliant areas)
- Offshore platform I/O systems
- Mining and mineral processing automation
- Water treatment facilities with hazardous classifications
System Compatibility
- PLC Platforms: ControlLogix, CompactLogix, FlexLogix (via 1797 FLEX Ex adapter)
- Adapter Modules: 1797-AENTR, 1797-ABK, 1797-ABKT
- Software: Studio 5000 Logix Designer, RSLogix 5000 v16+
- Certifications: ATEX II 2G, IECEx, FM (North America)
- Communication: EtherNet/IP, ControlNet, DeviceNet (via adapter)
Selection Guide
Use the following criteria to confirm the 1797-PS2E2 is the correct module for your application:
- Step 1 — Hazardous Area Classification: Confirm Zone 1 or Zone 2 (ATEX) / Division 1 or Division 2 (NEC) requirement
- Step 2 — Backplane Slot Count: Verify available slots on your 1797 backplane (PS2E2 occupies 1 slot)
- Step 3 — Power Budget: Calculate total I/O module current draw; ensure PS2E2 output capacity is sufficient
- Step 4 — Isolation Requirement: If galvanic isolation between field and control side is required, PS2E2 is the correct choice over PS1
- Step 5 — Certification Scope: Match ATEX/IECEx certificate numbers to your local regulatory authority requirements
Quality Assurance & Sourcing
- 🔍 Authenticity verified — All units sourced from authorized distributors or factory-refurbished channels
- 📦 Inspection before shipment — Functional test, label verification, and packaging integrity check
- 📄 Documentation available — Certificate of conformity, test reports, and original Rockwell datasheets on request
- 🌐 Global shipping — DHL / FedEx express with full export documentation (HS Code: 8537.10)
- 🔒 Warranty — 12-month warranty against manufacturing defects
How to Order
- Click Add to Cart or Buy Now above
- For bulk orders (>5 units) or urgent requirements, contact us directly for lead time and pricing
- Provide your PO number, delivery address, and any certification documentation requirements
- We will confirm stock availability and dispatch within 1–3 business days
📧 Email: [email protected]
📞 Phone/WhatsApp: +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I use 1797-PS2 instead of 1797-PS2E2?
A: The 1797-PS2 is a predecessor model. Verify backplane revision and firmware compatibility before substitution. Contact us for a compatibility check.
Q: Is the 1797-PS2E2 compatible with ControlLogix?
A: Yes, via a 1797 FLEX Ex adapter module (e.g., 1797-AENTR for EtherNet/IP). The PS2E2 itself is a backplane power supply, not a communication module.
Q: Do you supply refurbished units?
A: Yes. All refurbished units undergo full functional testing and are clearly labeled. New and refurbished options are available — specify your preference when ordering.
Q: What is the lead time for 1797-PS2E2?
A: In-stock units ship within 1–3 business days. Out-of-stock lead time is typically 2–4 weeks. Contact us for real-time availability.
Q: Can you provide ATEX documentation?
A: Yes. Original Rockwell Automation ATEX/IECEx certificates and EU Declaration of Conformity are available upon request.
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