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The ABB TB811 (Order Code: 3BSE008568R1) is a Modulebus Optical Port module designed for industrial automation systems. It serves as a critical interface within the ABB S800 I/O system, enabling the conversion of electrical signals to optical signals for transmission over fiber optic cables. This module is essential for extending communication distances and providing robust electrical isolation between control modules and I/O clusters.
| Product Model | TB811 / 3BSE008568R1 |
| Manufacturer | ABB |
| Supply Voltage | 24 V DC (18 – 30 V) |
| Power Consumption | <= 2 W |
| Current Draw | <= 85 mA @ 24 V |
| Optical Budget | 12 dB |
| Isolation | 2.5 kV AC |
| Operating Temperature | -40 degC to +70 degC |
| Storage Temperature | -40 degC to +85 degC |
| Humidity | 5 – 95 % RH, non-condensing |
The TB811 provides an optical interface for the Modulebus, allowing for the connection of I/O clusters over fiber optic cables to increase communication distance and provide electrical isolation.
It is primarily designed for use with ABB S800 I/O system components, including the CI810 and CI820 communication interfaces.
The TB811 supports a 5 Mbits driver, which is specific to this model and differs from other variants like the TB842.