B&R 3AT350.6 AT350 RTD Input Module | Replacement, Equivalent & Selection Guide
The B&R 3AT350.6 is a dedicated RTD (Resistance Temperature Detector) input module designed for the B&R Automation System 2000 / 3000 series. It provides high-accuracy temperature measurement from Pt100, Pt1000, Ni100, and other RTD sensor types, making it a critical component in process control, HVAC, and industrial automation applications. This page covers technical specifications, compatible replacement options, system compatibility, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Part Number: 3AT350.6
- Manufacturer: B&R Automation (Bernecker + Rainer)
- Module Type: RTD Analog Input
- Supported Sensor Types: Pt100, Pt1000, Ni100, Ni1000, KTY (model-dependent)
- Input Channels: 6 channels (isolated)
- Measurement Range: -200°C to +850°C (Pt100 standard)
- Resolution: 0.1°C
- Accuracy: ±0.5°C typical
- Connection Type: 2-wire / 3-wire / 4-wire RTD
- Bus Interface: B&R internal I/O bus (X2X Link or local bus)
- Power Supply: Via backplane bus
- Operating Temperature: 0°C to +55°C
- Storage Temperature: -25°C to +70°C
- Dimensions: Standard B&R 2000/3000 series module form factor
- Weight: Approx. 300 g
- Certifications: CE, UL (verify current listing)
Compatible Replacement & Equivalent Models
When the original 3AT350.6 is unavailable, end-of-life, or cost-prohibitive, the following alternatives may be considered. Always verify electrical, mechanical, and firmware compatibility before substitution.
- B&R 3AT356.6 — Upgraded variant with extended sensor support; direct form-factor replacement in most 2000/3000 series racks
- B&R X20AT2222 — X20 system RTD module; requires X20 backplane adapter but offers modern firmware support
- B&R X20AT4222 — 4-channel X20 RTD input; suitable for reduced-channel applications
- Siemens 6ES7331-7PF01-0AB0 — S7-300 RTD input module; cross-platform replacement requiring I/O remapping and PLC program adaptation
- Beckhoff EL3204 — EtherCAT RTD terminal; suitable for system migrations to TwinCAT/EtherCAT architecture
- Phoenix Contact MINI MCR-SL-PT100-UI — Signal conditioner approach; converts RTD to standard analog signal for use with any analog input module
Note: Cross-brand replacements require engineering review. Contact Konmask technical support for compatibility assessment.
Why Choose the Original Model
- Native Integration: Plug-and-play with B&R Automation Studio; no additional driver or configuration mapping required
- Proven Reliability: Validated in thousands of installed B&R systems globally across process and factory automation
- Diagnostic Support: Full module diagnostics accessible via Automation Studio including channel-level fault detection
- Warranty Compliance: Using OEM modules preserves system warranty and support agreements with B&R
- Exact Fit: Mechanical and electrical form factor guaranteed; no rack modification required
Typical Applications
- Industrial furnace and kiln temperature monitoring
- HVAC and building automation systems
- Pharmaceutical and food processing temperature control
- Plastics extrusion and injection molding machines
- Chemical reactor temperature feedback loops
- Energy management and boiler control systems
- Water treatment plant process monitoring
System Compatibility
- Compatible Racks: B&R 2000 series (2005, 2010) and 3000 series backplanes
- Compatible CPUs: B&R 2003, 2005, 3003, 3005 series CPUs and compatible controllers
- Software: B&R Automation Studio 2.x and above; IEC 61131-3 programming environments
- Bus Protocol: B&R proprietary local I/O bus; not compatible with X20 or X67 bus without adapter
- Not Compatible With: B&R X20 system (direct slot), ACOPOS drives, or third-party PLC racks without signal conversion
Selection Guide
Use the following criteria to determine whether the 3AT350.6 or an alternative is the right choice for your application:
- Existing B&R 2000/3000 system with available slot → Order 3AT350.6 (original or refurbished)
- System upgrade to B&R X20 platform → Select X20AT2222 or X20AT4222 with appropriate adapter
- Reduced channel count needed (≤4 channels) → Consider X20AT4222 or equivalent 4-channel module
- Cross-platform migration (Siemens S7) → Siemens 6ES7331-7PF01-0AB0 with full I/O remapping
- EtherCAT-based new build → Beckhoff EL3204 recommended
- Retrofit without PLC change → Phoenix Contact signal conditioner to standard 4–20 mA output
- Budget-sensitive MRO replacement → Verified refurbished 3AT350.6 from Konmask with test report
Quality Assurance & Sourcing
- Sourcing: All units sourced from verified industrial distributors, OEM surplus channels, and authorized resellers
- Inspection: Each module undergoes visual inspection, functional power-on test, and I/O channel verification before shipment
- Condition Options: New (sealed), Refurbished (tested), and As-Is (for parts/repair) — clearly labeled on each listing
- Documentation: Test reports and traceability documentation available upon request
- Warranty: 90-day functional warranty on refurbished units; 12-month warranty on new stock
- Export Compliance: All shipments comply with applicable export control regulations (ECCN, HS code declared)
How to Order
- Step 1: Confirm your rack model and available slot type (2000 or 3000 series)
- Step 2: Verify required sensor type (Pt100 / Pt1000 / Ni100) and channel count
- Step 3: Select condition (New / Refurbished) and add to cart, or contact us for bulk pricing
- Step 4: Provide PO number or company details for B2B invoice and customs documentation
- Step 5: Receive shipping confirmation with tracking and estimated delivery
For urgent requirements or large quantity orders, contact our technical sales team directly: [email protected] | +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I use the 3AT350.6 in a B&R X20 rack?
A: No. The 3AT350.6 uses the legacy B&R local bus and is not directly compatible with X20 backplanes. An adapter module or system migration is required.
Q: Is the 3AT350.6 still in production?
A: This model is considered legacy/end-of-life by B&R. Availability depends on surplus and refurbished stock. Konmask maintains inventory — contact us for current stock status.
Q: What is the difference between 3AT350.6 and 3AT356.6?
A: The 3AT356.6 is an upgraded variant with broader sensor type support and improved diagnostics. It is generally a drop-in replacement for the 3AT350.6 in compatible racks.
Q: Can I use a Siemens RTD module as a direct replacement?
A: Not directly. Cross-brand substitution requires I/O address remapping, PLC program modification, and physical wiring changes. Engineering review is mandatory.
Q: Do you provide test reports for refurbished units?
A: Yes. Test reports documenting channel-level verification are available upon request for all refurbished units.
Q: What RTD wiring configurations are supported?
A: The 3AT350.6 supports 2-wire, 3-wire, and 4-wire RTD connections. 3-wire and 4-wire configurations provide better lead resistance compensation and are recommended for precision applications.
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Contact: [email protected] | +0086 19859288691
