Product Overview
When your S800 I/O system requires flexible module placement across multiple DIN rails, the ABB TB806 ModuleBus Cable Adaptor provides a reliable solution. This compact adaptor works with the TB805 and TK801V0xx to extend the electrical ModuleBus, allowing I/O modules on the same bus to be mounted on different DIN rails. For optical isolation needs, the TB806 pairs with the TB842 to create an optical ModuleBus extension.
Technical Specifications Breakdown
The TB806 operates reliably in demanding industrial environments. Key specifications from the manufacturer include:
- Environmental Tolerance: Operating temperature range of 0 to +55 °C with storage from -25 to +70 °C, and non-condensing relative humidity of 5 to 95 % per IEC/EN 61131-2.
- Protection Class: IP20 according to IEC 60529, suitable for protected indoor installations.
- Corrosion Protection: Rated G3 per ISA-S71.04, ensuring resilience in corrosive atmospheres.
- Certifications: CE marked, with electrical safety compliance to IEC 61131-2, UL 61010-1, and UL 61010-2-201. Hazardous location approvals include C1 Div 2 cULus, C1 Zone 2 cULus, and ATEX Zone 2. Marine certifications from ABS, BV, DNV, and LR.
- Mechanical Dimensions: Compact footprint of 22 mm width, 25 mm depth, and 109 mm height, weighing only 46 g.
- EMC Compliance: Meets EN 61000-6-4 (emission) and EN 61000-6-2 (immunity) standards.
Industry Applications
In process control systems where I/O modules must be distributed across multiple cabinets, the TB806 enables cost-effective ModuleBus extension without signal degradation. For example, in a chemical plant with corrosive environments (G3 rated), the TB806 maintains reliable communication between remote I/O racks. Similarly, in marine applications requiring ABS, BV, DNV, or LR certification, this adaptor integrates seamlessly into shipboard automation systems.
Installation & Setup Guidance
Mount the TB806 on a standard DIN rail within the S800 I/O system. Connect it to the TB805 and TK801V0xx using the appropriate ModuleBus cable to extend the bus electrically. For optical extension, link the TB806 with the TB842 module. Ensure the installation environment meets the specified operating temperature and humidity limits. The compact 22 mm width allows space-efficient placement alongside other S800 modules.
Maintenance & Reliability
The TB806 requires minimal routine maintenance due to its solid-state design and IP20 protection. Periodic inspection of cable connections and environmental conditions (temperature, humidity, corrosive gases) helps ensure long-term reliability. The G3 corrosion protection rating reduces the risk of contact degradation in harsh atmospheres, extending service life and reducing unplanned downtime.
Compatibility & Integration
This adaptor is designed exclusively for ABB S800 I/O systems. It integrates with the TB805 and TK801V0xx for electrical ModuleBus extension, and with the TB842 for optical extension. The TB806 does not introduce additional communication protocols; it simply extends the existing ModuleBus physical layer. Verify compatibility with your specific S800 I/O modules before ordering.
Selection Guide & Purchasing Advice
Before purchasing the TB806 (article number 3BSE008536R1), confirm that your system uses the S800 I/O platform and that you have the required TB805 and TK801V0xx components for electrical extension, or a TB842 for optical extension. Consider the total number of I/O modules and distance requirements to ensure adequate bus length. SpareTechPLC stocks genuine ABB TB806 adaptors with full traceability. Contact our team for current availability and pricing.
Frequently Asked Questions
Q1: Can the TB806 be used with non-ABB I/O systems?
No, the TB806 is designed exclusively for ABB S800 I/O systems and the ModuleBus protocol.
Q2: What is the maximum distance the TB806 can extend the ModuleBus?
The provided data does not specify a maximum distance. Refer to the ABB S800 I/O system manual for bus length limits.
Q3: Does the TB806 require external power?
The TB806 is a passive adaptor and does not require external power; it draws power from the ModuleBus.
Q4: Is the TB806 suitable for outdoor use?
No, the IP20 protection class indicates it is suitable only for indoor, protected environments.
Q5: What certifications does the TB806 hold for hazardous locations?
It holds C1 Div 2 cULus, C1 Zone 2 cULus, and ATEX Zone 2 approvals.
