ABB TK801 Modules

Technical Dossier

Product Details And Specifications

ABB TK801 Series: Comprehensive Module Range and Technical Overview

The ABB TK801 series comprises shielded Modulebus extension cables engineered for use within the ABB AC500 programmable logic controller platform — one of the most widely deployed modular PLC architectures in global heavy industry. AC500-based control systems are installed across chemical processing plants, nuclear power auxiliary systems, oil refineries, pulp and paper mills, and offshore platforms. The TK801 cable family provides the physical Modulebus interconnect layer between the AC500 CPU modules (PM5xx/PM5xx-ETH series) and their associated I/O terminal units (TU5xx series), enabling distributed I/O expansion across cabinet rows and remote marshalling panels. Correct cable selection — by length and shielding specification — is a critical factor in system EMC compliance and bus signal integrity under industrial noise conditions.

The Evolution of TK801 Architecture

The TK801 series was introduced alongside the AC500 platform (launched circa 2005) as ABB's successor to the Advant/Master and Freelance 2000 controller families. Early AC500 deployments used the Modulebus — a proprietary serial backplane bus — to connect CPUs housed in TB5xx bus terminal units to remote I/O terminal units. The TK801 cables carry this Modulebus signal over shielded twisted-pair construction, with impedance and capacitance characteristics matched to the AC500 bus specification.

As the AC500 platform evolved through the V2 and V3 hardware generations (introducing the PM5630, PM5650, PM5670, and PM5690 CPUs), the TK801 cable pinout and connector format remained backward-compatible, preserving installed-base investments. The introduction of the AC500-eCo (economy) and AC500-S (safety, IEC 61508 SIL 2/3 certified) sub-families did not alter the physical Modulebus cable standard, meaning TK801 cables serve all three sub-families. In modern greenfield projects, engineers increasingly use the TB5xx bus terminal units with integrated I/O slots to reduce external cabling, but TK801 cables remain the only solution for inter-cabinet I/O expansion and legacy system extensions where cabinet geometry prevents direct bus terminal stacking.

TK801 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified TK801 Modulebus Extension Shielded Cable range. All variants share the same electrical specification; differentiation is by cable length only. Each cable terminates in the standard AC500 Modulebus RJ45-style locking connector on both ends.

TK801V003: Modulebus extension shielded cable, 0.3 m length, for tight intra-cabinet CPU-to-I/O connections.
TK801V006: Modulebus extension shielded cable, 0.6 m length, standard intra-cabinet routing between CPU and first I/O terminal unit.
TK801V010: Modulebus extension shielded cable, 1.0 m length, for single-cabinet installations with moderate vertical separation.
TK801V015: Modulebus extension shielded cable, 1.5 m length, used for cross-DIN-rail routing within large enclosures.
TK801V020: Modulebus extension shielded cable, 2.0 m length, standard inter-section cabinet routing.
TK801V030: Modulebus extension shielded cable, 3.0 m length, for adjacent cabinet-to-cabinet Modulebus extension.
TK801V050: Modulebus extension shielded cable, 5.0 m length, for remote I/O expansion across short inter-cabinet distances.
TK801V100: Modulebus extension shielded cable, 10.0 m length, maximum standard length for single-segment Modulebus runs.
TK801V150: Modulebus extension shielded cable, 15.0 m length, for extended remote I/O marshalling panel connections.
TK801V200: Modulebus extension shielded cable, 20.0 m length, long-distance inter-panel Modulebus extension.
TK801V300: Modulebus extension shielded cable, 30.0 m length, maximum extended-run variant for large plant layouts.
TK801V500: Modulebus extension shielded cable, 50.0 m length, used in distributed marshalling architectures with repeater support.
TK801F001: Modulebus fiber optic extension module interface cable, for electrically isolated long-distance Modulebus segments.
TK801F002: Modulebus fiber optic patch cable, paired with TK801F001 for noise-immune inter-building I/O extension.
TK801V006-SET: TK801V006 cable supplied as a factory-tested matched pair set for redundant Modulebus configurations.
TK801V020-SET: TK801V020 cable matched pair set for redundant 2.0 m Modulebus segment installations.
TK801V100-SET: TK801V100 cable matched pair set for redundant 10.0 m long-run Modulebus segments.

Sourcing Hard-to-Find & Obsolete TK801 Parts

The TK801 series is classified as a mature product line within ABB's AC500 lifecycle framework. While core variants such as TK801V006 and TK801V020 remain available through ABB's standard distribution channels, longer-run variants (TK801V300, TK801V500) and fiber interface cables (TK801F001, TK801F002) are subject to extended lead times or regional allocation constraints. For sites operating first-generation AC500 hardware (pre-2012 manufacture dates), sourcing compatible TK801 cables from the secondary market is often the only viable path to maintaining bus integrity without a full controller migration.

DriveKNMS maintains a dedicated inventory of TK801 cables across all length variants, including matched-pair sets for redundant Modulebus architectures. Our sourcing network covers factory-surplus, decommissioned plant stock, and authorized distributor overstock. All units are inspected for connector integrity, shield continuity, and cable jacket condition prior to dispatch. For end-of-life AC500 systems requiring long-term maintenance support, DriveKNMS provides multi-year supply agreements covering TK801 cables alongside associated PM5xx CPU modules and TU5xx terminal units.

Quality Control for the TK801 Range

TK801 cables are tested against the following parameters before shipment from DriveKNMS: (1) Shield continuity — end-to-end shield resistance measured at <1 Ω to confirm unbroken foil and drain wire integrity; (2) Conductor pair continuity — all signal conductors verified for open-circuit and cross-connection faults; (3) Connector locking mechanism — both RJ45-style locking tabs inspected for full engagement force and release function; (4) Jacket inspection — visual and tactile check for cracking, abrasion, or chemical contamination of the PVC outer jacket; (5) Length verification — physical measurement against nominal specification with ±2% tolerance. For matched-pair sets (TK801V006-SET, TK801V020-SET, TK801V100-SET), both cables in the set are tested as a pair on a live AC500 Modulebus test bench to confirm simultaneous bus communication at rated speed.