ABB TB853, article number 3BSE057022R1, is an RCU Control Link terminator listed by ABB among AC 800M communication-bus accessories for System 800xA and the Compact Product Suite.
- Manufacturer: ABB
- Article number: 3BSE057022R1
- Type: TB853
- Product function: RCU Control Link terminator
Its specific function is to terminate the RCU Control Link. It is a link-termination accessory and does not measure analog variables, acquire digital field inputs, generate control outputs or execute the controller application. ABB lists TK856, article number 3BSE057021R1, as the RCU Control Link cable used with PM891; TB853 is the corresponding terminator type named for the RCU Control Link. Final cable, terminator and controller placement must follow the applicable PM891/AC 800M hardware topology. The product is applied in redundant AC 800M controller architectures requiring an RCU Control Link, including System 800xA and Compact Product Suite cabinets. It must not be substituted for the TB852 RCU Link terminator or for CEX-Bus terminators.
Important Notice: Verify the exact physical nameplate and do not confuse this item with TB852 / 3BSC950263R1, which terminates the RCU Link rather than the RCU Control Link.
Apter Power TB853 3BSE057022R1 Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
RCU Control Link termination
Terminates the RCU Control Link in the ABB AC 800M topology specified for the installed redundant controller configuration.
PM891 redundant control
Used in the RCU Control Link architecture associated with PM891; ABB lists TK856 as the PM891 RCU Control Link cable.
System 800xA controller cabinets
Applied as a communication-bus accessory where a System 800xA AC 800M controller design requires RCU Control Link termination.
Compact Product Suite cabinets
Applied in Compact Product Suite AC 800M redundant-controller layouts that use the RCU Control Link.
Read and follow the current ABB documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Verify both TB853 and article number 3BSE057022R1 on the physical label before installation.
2
Do not substitute TB852; ABB assigns TB852 to the RCU Link and TB853 to the RCU Control Link.
3
Verify the controller redundancy topology, PM891 hardware and the specified TK856 cable in the current ABB hardware documentation.
4
Isolate the controller system and follow ABB's qualified-personnel and hardware-handling procedures before connecting or removing the terminator.
5
Inspect and secure the connector, then validate redundant-controller diagnostics before returning the process system to service.
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