ABB 3BSE013208R1 TB820V2 AC 800M Cluster Modem

ABB TB820V2 3BSE013208R1 AC 800M Modulebus Cluster Modem Configured for optical Modulebus cluster expansion and backplane communication in ABB System 800xA networks, the ABB TB820V2 3BSE013208R1 (TB820V2 Modulebus Cluster Modem) provides direct physical/electrical execution. It interfaces the controller backplane with optical fiber links to extend Modulebus communications to distant S800 I/O sub-clusters, routing 24 VDC auxiliary power and data signals across redundant communication paths. Hardware Specifications Parameter Specification Model TB820V2 Brand ABB Part Number 3BSE013208R1 Origin Sweden Dimensions 60 mm x 185 mm x 127 mm Weight 0.30 kg Operating Temp +5 to +55 deg C Power Consumption Passive distribution (24 VDC backplane bus feed) Bus Interface CEX Bus / Optical Modulebus Protection Rating IP20 (IEC 60529) Environmental Standard ISA G3 compliant (ISA 71.04) Compatible Modules CI853, CI854, CI860, CI870, CI871, CI873, CI874 Backplane Bus Communication Velocity and Firmware Flash Compatibility The TB820V2 cluster modem stabilizes deterministic data transfer across extended I/O stations without degrading backplane bus communication velocity. Internal logic circuitry ensures full firmware flash compatibility with AC 800M processor versions, providing real-time optical-to-electrical signal conversion across the CEX bus. Designed to maintain high noise immunity across long distances, the unit isolates differential communication lines from transient electromagnetic interference in high-density panel layouts. Frequently Asked Questions Q: How does the TB820V2 differ from earlier hardware revisions of the TB820 base unit? A: The V2 revision incorporates updated internal componentry for enhanced environmental compliance, improved thermal endurance, and full ISA G3 harsh-environment corrosion resistance. Q: Can the TB820V2 be hot-swapped during active system operation? A: Yes. The baseplate and optical interface structure support hot-swapping, allowing replacement of attached communication interface modules without interrupting backplane power or bus traffic on adjacent slots. Field Installation Guidelines Mount the TB820V2 securely onto standard 35 mm DIN rails inside the control enclosure. Ensure the rear grounding contacts snap firmly against the unpainted surface of the rail to establish a low-impedance ground path. When connecting optical fiber pairs to the Modulebus ports, maintain clean optical connector faces and observe minimum cable bend radius limits to prevent optical attenuation. Keep signal cabling physically separated from high-voltage AC distribution circuits to comply with noise isolation standards.