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ABB TB811 3BSE008568R1 Optical ModuleBus Port

Configured for optical ModuleBus communication in ABB S800 I/O systems, the ABB TB811 3BSE008568R1 (TB811 Optical ModuleBus Port) provides direct physical interface conversion between electrical ModuleBus signals and optical communication links.

Hardware Specifications

Parameter	Specification
Model	TB811 3BSE008568R1
Brand	ABB
Product Type	Optical ModuleBus Port
Origin	Sweden
Dimensions	2 x 5.2 x 4.2 cm
Operating Temp	-40 deg C to +70 deg C
Storage Temp	-40 deg C to +85 deg C
Power Consumption	<= 2 W
Supply Voltage	24 V DC (18 - 30 V)
Current Draw	<= 85 mA @ 24 V
Electrical Interface	RS-485 half-duplex
Optical Budget	12 dB
Isolation	2.5 kV AC
Humidity	5 - 95 % RH, non-condensing
Application Interface	ABB ModuleBus optical communication
Compatible Equipment	CI810 / CI820 communication interfaces, ABB drives equipment
Tariff Code	8537101190

ABB Industrial Communication Interface Characteristics

The TB811 3BSE008568R1 uses ABB ModuleBus optical communication technology to extend communication distance and maintain signal isolation between connected system components. The unit converts RS-485 half-duplex electrical communication into an optical ModuleBus connection for ABB control architectures.

Furthermore, the module supports ABB backplane bus communication velocity and I/O density scaling requirements within S800 I/O configurations. The 2.5 kV AC isolation separates electrical circuits and reduces the influence of potential differences between connected devices.

The optical interface provides a 12 dB optical budget, allowing installation flexibility in distributed I/O configurations. The module operates from a 24 V DC supply and maintains low current consumption for control cabinet integration.

Frequently Asked Questions

Q: What communication interface does the ABB TB811 3BSE008568R1 support?
A: The TB811 supports RS-485 half-duplex electrical communication and provides an optical ModuleBus port interface.

Q: Can the TB811 be used with ABB CI810 and CI820 interfaces?
A: Yes. The TB811 is designed for use with ABB CI810 and CI820 communication interfaces and related ModuleBus configurations.

Q: What power supply range does the TB811 require?
A: The module requires a 24 V DC supply with an operating voltage range of 18 - 30 V DC.

Field Installation Guidelines

Install the TB811 on a suitable DIN rail or approved ABB mounting arrangement according to the control cabinet design requirements.

Verify the 24 V DC supply polarity before energizing the module. Maintain separation between communication wiring and high-current power cables to reduce electromagnetic interference.

Connect optical fibers with correct alignment and protect fiber connectors from contamination during installation. Inspect optical interfaces before connection to avoid signal attenuation caused by dust or mechanical damage.

Confirm RS-485 wiring polarity and grounding practices according to ABB installation documentation. Use appropriate shielding methods when installing the module in environments with electrical noise sources.

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