Allen-Bradley 1797-IE8H Analog Input Module – FLEX Ex Series
Imagine a petrochemical plant where a critical reactor temperature signal suddenly goes dark. Without a reliable intrinsically safe analog input module, operators lose visibility into process variables in Zone 1/Zone 2 hazardous areas — the result can be unplanned shutdowns, safety incidents, or catastrophic equipment failure. The Allen-Bradley 1797-IE8H exists precisely to prevent this scenario: it delivers continuous, accurate analog signal acquisition from field instruments located in explosive atmospheres, keeping your control system fully informed at all times.
Within the FLEX Ex product family — Rockwell Automation’s dedicated I/O platform for hazardous-location applications — the 1797-IE8H occupies the role of high-density analog input. It provides 8 channels of isolated current/voltage input in a compact FLEX form factor, making it the preferred choice for engineers who need to maximize channel count per DIN-rail slot in Ex-rated enclosures. Globally, the FLEX Ex platform is deployed across oil & gas, chemical processing, pharmaceutical, and mining industries where IEC 60079 compliance is non-negotiable.
Technical Specifications
- Part Number / SKU: 1797-IE8H
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Series: FLEX Ex
- Module Type: Analog Input
- Number of Channels: 8
- Signal Type: Current / Voltage (configurable per channel)
- Hazardous Area Rating: ATEX / IECEx Zone 1, Zone 2
- Communication: FLEX Ex backplane bus
- Isolation: Channel-to-channel and channel-to-backplane isolation
- Weight: Approx. 700 g
- Compliance: IEC 60079, ATEX Directive 2014/34/EU
Note: All specifications are based on published Rockwell Automation documentation. Contact Konmask.com to confirm the latest revision datasheet before ordering.
Key Features & Benefits
- 8-Channel High Density: Maximizes I/O per slot, reducing enclosure size and wiring costs in Ex installations.
- Intrinsic Safety Compliance: Certified for Zone 1/Zone 2 hazardous locations — no additional safety barriers required at the module level.
- Per-Channel Isolation: Prevents ground loops and cross-channel interference, critical for accurate process measurement in noisy industrial environments.
- Seamless FLEX Ex Integration: Plugs directly into the FLEX Ex backplane alongside digital I/O and specialty modules for a unified system architecture.
- Rockwell Studio 5000 / RSLogix 5000 Compatible: Full Add-On Profile (AOP) support for rapid commissioning and diagnostics.
- Robust Construction: Designed for continuous operation in harsh environments with wide temperature tolerance.
Industry & Equipment Applications
- Oil & Gas: Wellhead pressure/temperature monitoring, pipeline flow measurement, compressor station control in Zone 1 classified areas.
- Chemical & Petrochemical: Reactor temperature profiling, level transmitter inputs, distillation column instrumentation.
- Pharmaceutical: Clean-in-place (CIP) process monitoring in solvent-handling areas requiring Ex-rated I/O.
- Mining: Underground conveyor belt load monitoring, ventilation control systems in methane-risk zones.
- Water & Wastewater: Pump station analog inputs in potentially explosive atmospheres (biogas environments).
System Integration & Compatible Parts
The 1797-IE8H is designed to operate within a complete FLEX Ex system. Typical bill of materials includes:
- 1797-AENTR – FLEX Ex EtherNet/IP Adapter (communication interface to ControlLogix / CompactLogix)
- 1797-TB3 – FLEX Ex Terminal Base (required for each I/O module)
- 1797-OE8H – FLEX Ex 8-Channel Analog Output Module (paired output counterpart)
- 1797-IE8 – FLEX Ex 8-Channel Analog Input (standard, non-hazardous variant for comparison)
- 1756-L8x ControlLogix Controllers – Upstream PLC platform for system-level logic
Our Quality Assurance Process
- Source Verification: All Allen-Bradley modules are sourced from authorized distributors or verified surplus channels with full traceability documentation.
- Visual & Functional Inspection: Each unit undergoes physical inspection for label integrity, connector condition, and firmware revision verification.
- Authenticity Check: Holographic labels, date codes, and serial numbers are cross-referenced against Rockwell Automation records where applicable.
- Secure Packaging: ESD-safe packaging with moisture barrier bags and shock-absorbing foam for international shipment.
- Documentation: Certificate of conformity and inspection report available upon request.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page or email support@konmask.com.
- Provide your required quantity, delivery timeline, and destination country.
- Our team will respond within 24 business hours with availability, lead time, and a formal quotation.
- Upon PO confirmation, we arrange secure packaging and international logistics with full tracking.
Why Choose Konmask.com?
- ✅ Specialized in Allen-Bradley, Siemens, ABB, Schneider, and other leading automation brands
- ✅ Global shipping to 50+ countries with DHL, FedEx, and UPS express options
- ✅ Dedicated B2B support team with industrial automation engineering background
- ✅ Competitive pricing for both single-unit and bulk orders
- ✅ Flexible payment terms for qualified buyers (T/T, L/C, PayPal)
- ✅ Export documentation support: commercial invoice, packing list, CO, and more
Frequently Asked Questions
Q: Is the 1797-IE8H suitable for Zone 0 hazardous areas?
A: No. The 1797-IE8H is rated for Zone 1 and Zone 2 (ATEX/IECEx). For Zone 0 applications, consult Rockwell Automation for appropriate intrinsically safe barriers and certified field instruments.
Q: Can this module be used with a CompactLogix controller?
A: Yes, via the FLEX Ex EtherNet/IP adapter (e.g., 1797-AENTR), the 1797-IE8H can be integrated with any EtherNet/IP-capable controller including CompactLogix and ControlLogix platforms.
Q: Do you supply the required terminal base (1797-TB3) together with the module?
A: Yes, we can supply the complete FLEX Ex assembly including terminal bases. Please specify your requirements in your RFQ.
Q: What is the typical lead time for the 1797-IE8H?
A: Lead time varies by stock availability. In-stock units typically ship within 3–5 business days. For out-of-stock items, lead time is 2–6 weeks. Contact us for real-time availability.
Q: Can you provide a test report or certificate of conformity?
A: Yes. Inspection reports and certificates of conformity are available upon request for all modules shipped from Konmask.com.
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