ABB TU891 3BSC840157R1 Module Termination Unit
General info
| Manufacture | ABB |
| Item No | TU891 |
| Article number | 3BSC840157R1 |
| Series | 800xA Control Systems |
| Origin | Sweden |
| Dimension | 73*233*212(mm) |
| Weight | 0.5kg |
| Customs Tariff Number | 85389091 |
| Type |
Module Termination Unit
|
Detailed data
ABB TU891 3BSC840157R1 Module Termination Unit
The TU891 MTU has gray terminals for field signals and process voltage connections. The maximum rated voltage is 50 V and maximum rated current is 2 A per channel, but these are primarily constrained to specific values by the design of the I/O modules for their certified application. The MTU distributes the ModuleBus to the I/O module and to the next MTU. It also generates the correct address to the I/O module by shifting the outgoing position signals to the next MTU.
Two mechanical keys are used to configure the MTU for different types of I.S. I/O modules. This is only a mechanical configuration and it does not affect the functionality of the MTU or the I/O module. The keys used on the TU891 are of the opposite gender to those on any other type of MTU and will mate only with IS I/O modules.
It supports communication protocols such as Profibus, Modbus and other industrial fieldbus protocols, depending on the system configuration. This enables it to interact with various types of field devices and communication systems. TU891 is designed to be mounted on a DIN rail within a control panel or rack. It has screw terminals for secure field device connections. The unit is easy to install and configure in large ABB automation systems, enabling seamless connectivity between field devices and control modules.
Frequently asked questions about the product are as follows:
-What types of signals can the ABB TU891 handle?
The TU891 supports both analog and digital signals, making it compatible with a wide range of field devices.
-Can the TU891 be used in hazardous environments?
The TU891 is designed for use in industrial environments, but if used in hazardous environments, it should be installed in an appropriate explosion-proof enclosure or cabinet. Verify that the installation complies with applicable safety standards.
-How does the ABB TU891 help troubleshooting?
The TU891 has diagnostic LEDs that help identify faults, signal problems, or communication errors. In addition, field connections are clearly labeled to help with quick troubleshooting.
