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PRODUCT DESCRIPTION
Termination for a PM891 single-processor configuration
ABB TB853, article number 3BSE057022R1, is the RCU Control Link Terminator specified for a PM891 processor operating in single configuration. The AC 800M hardware guide places this plug in the RCU Control port at the top of the PM891 unit.
This accessory must not be confused with the TB852 terminator used on other processor types, or with the TK855 and TK856 cables that connect redundant PM891 units. Confirm the processor type, single or redundant arrangement and designated port before selecting or replacing the terminator.
This accessory must not be confused with the TB852 terminator used on other processor types, or with the TK855 and TK856 cables that connect redundant PM891 units. Confirm the processor type, single or redundant arrangement and designated port before selecting or replacing the terminator.
BEFORE YOU BUY
Confirm the complete installed configuration
ACTUAL APPLICATIONS
PM891 termination in AC 800M control systems
ABB documents continuous control, application logic and drive integration for AC 800M. In the following system contexts, TB853 has only the specified PM891 single-configuration termination role; it does not execute control logic or field communication.
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01 · PROCESS CONTROL
Completing a single-CPU controller assembly
An AC 800M process-control installation may use the documented PM891 single-processor arrangement. TB853 terminates that processor's RCU Control port; control-loop functions belong to the configured controller and application software. -
02 · SEQUENCE CONTROL
Maintaining the processor configuration
For an AC 800M application using the supported logic functions, servicing a PM891 single-CPU assembly includes checking its required termination. The plug does not add I/O channels or create a redundant controller. -
03 · DRIVE INTEGRATION
Separating processor and fieldbus accessories
ABB describes drive integration within AC 800M systems. Where a single PM891 is used, TB853 serves the processor's RCU Control port rather than terminating the drive network, CEX bus or optical ModuleBus.
Technical specifications for TB853 3BSE057022R1
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Product ModelTB853 3BSE057022R1
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Product ParametersRCU control link terminator
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In stock1 unit
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ManufacturerABB
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Applicable processorPM891
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Required processor arrangementSingle configuration
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Connection pointRCU Control port
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Port locationTop of the PM891 unit
View all additional
Alternative Names
ABB TB853 terminator
3BSE057022R1 RCU Control plug
PM891 single-configuration terminator
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
AC 800M / PM891
Single-processor termination, not redundant-link cabling
The ABB hardware guide explicitly requires TB853 for PM891 operation in single configuration. The designated connection is the RCU Control port at the top of the PM891 processor.
In a redundant PM891 arrangement, ABB distinguishes TK855 data synchronization from TK856 control-link role selection. These are different components and functions, not interchangeable names for TB853.
AC 800M also has separate CEX-bus and ModuleBus termination components. Use the processor type and actual port designation to identify the correct accessory, and follow the applicable hardware safety instructions before servicing.
Features:
- Confirm single PM891 operation
- Identify the RCU Control port
- Distinguish CEX, ModuleBus and RCU connections
The ABB TB853 3BSE057022R1 terminator requires the correct PM891 configuration before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Retain the complete TB853 3BSE057022R1 identity. The article mapping is confirmed by ABB's bus-accessory catalog, while the hardware guide provides the actual PM891 single-configuration requirement.
Do not replace TB853 with TB852, TK855 or TK856 solely because these items appear together in a catalog. They have different processor or link functions and require configuration-specific selection.
The reviewed official material does not establish a discontinuation date or unconditional successor. Check current ABB hardware information before changing a controller arrangement, rather than treating a terminator replacement as a redundancy upgrade.
Features:
- Preserve both designation and article number
- Do not substitute another bus accessory
- Check current processor configuration documentation
The ABB TB853 3BSE057022R1 terminator replacement requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Amikon is an independent supplier. Refer to the applicable ABB documentation and the installed equipment configuration before selection, installation or replacement.
Features:
- Exact-model reference documents
- Model and controller identity checks
- Accessories are supplied only when listed in the quotation
Documentation for the ABB TB853 3BSE057022R1 supports document applicability checks before installation or replacement.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed sizePacked dimensions unconfirmed
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Shipping weightGross weight unconfirmed
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS referenceClassification unconfirmed
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OriginOrigin unconfirmed
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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FREQUENTLY ASKED QUESTIONS
Questions buyers ask about TB853 3BSE057022R1
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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When does a PM891 require TB853?
ABB specifies TB853 when the PM891 processor operates in single configuration. It is plugged into the RCU Control port at the top of the processor. -
Can TB852 be substituted for TB853?
The guide assigns them to different processor configurations. TB852 is specified for the listed PM857, PM858, PM862, PM863, PM866A and PM867 single configurations; TB853 is specified for PM891. The similar names do not establish interchangeability. -
Is TB853 required because the controller is redundant?
The documented TB853 requirement is for a single PM891, not a general statement about redundant operation. ABB describes separate control and data cables for interconnected redundant PM891 units. -
What is the difference between TB853 and TK856?
TB853 terminates the RCU Control port in a single PM891 configuration. TK856 is the control-link cable between redundant PM891 processors and supports role selection and CPU identity assignment. -
Does this plug terminate the optical ModuleBus?
No. ABB documents ModuleBus termination separately using TB807. TB853 belongs to the PM891 RCU Control connection; do not select a terminator by appearance alone. -
Can TB853 be used as an RCU data cable?
No. ABB describes TK855 as the data link that synchronizes redundant PM891 processors. TB853 is the dedicated terminator for the RCU Control port in the specified single configuration. -
What should be checked before replacing this terminator?
Identify the processor, its configured single or redundant arrangement and the correct port. Follow the AC 800M hardware safety instructions, including precautions against energized parts and electrostatic discharge; do not infer hot-swap permission. -
Is an approved successor or discontinuation date available?
No exact successor or discontinuation date was confirmed in the reviewed ABB material. Other bus accessories in the same catalog are not automatic replacement equivalents.
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