SHAKOPEE, Minn. — KEB America has turned One Cable Technology from a drive firmware checkbox into a matched system kit. S6 servo drives and F6 variable frequency drives can now ship as an OCT package that carries motor power and encoder traffic on one hybrid cable, eliminating the second feedback cable that still dominates many North American machine builds.

KEB’s OCT offer focuses on the lower-to-mid power S6 and F6 frames where cabinet density and drag-chain bulk hurt OEMs first.

Design World’s coverage places the launch in the familiar OEM pain point: too many drive axes, too little panel volume, and encoder looms that fail long before the motor bearings do. OCT collapses that loom. Power and digital feedback share a single motor cable; the drive-motor pair becomes a five-part kit—drive or inverter, motor, encoder, and the OCT cable—rather than a shopping list of mismatched vendors.

What is in the OCT bill of materials

On the electronics side, KEB lists S6 servo drives from 0.75 kW to 7.5 kW in housings 2 and 4, and F6 VFDs from 2.2 kW to 37 kW in housings 2 and 3. Both use the PRO control board with Safety Module 5. Feedback rides HIPERFACE DSL inside the motor cable, a digital protocol that replaces a classic separate encoder pair without giving up noise immunity—exactly the failure mode that makes hybrid cables live or die in long drag chains.

Hybrid OCT cables are offered in 1.5, 2.5, and 4.0 mm² sections with M15, M23, and M40 motor connectors.

Matched motors include TA series frames TA1 through TA6 with M23/M40 connectors and EN12 multiturn encoders, plus DL3 Dynamic Line servos with M15/M23 connectors. Cable lengths go to 50 meters. That length band covers most packaging, intralogistics, and mid-size machine tools without forcing a second supplier for the hybrid whip.

PRO-board S6/F6 units take OCT on the X1C path normally used for motor temperature inputs—layout details matter at panel design time.

Why machine builders care beyond “one less plug”

Fewer plugs sound trivial until you count termination time, spare-part SKUs, and the drag-chain cross-section that sets energy-chain size. KEB’s product messaging—and Timo Geisler, product manager drives at KEB Automation, in companion technical notes—hits four practical outcomes: simpler cabinet and motor wiring; smaller footprint and faster install; fewer connector failure points; and lower total cost of ownership from inventory and service time. Halving the cables in a chain also halves the bend-cycle wear surfaces that maintenance teams replace on night shifts.

OCT is not a substitute for a well-tuned PLC or PAC motion network. It is a field-wiring cleanup between the inverter and the motor so the controller layer sees a cleaner, shorter bill of materials. Builders already mixing KEB axes with broader industrial catalogs—including ABB drive and motor spares on multi-brand lines—usually evaluate OCT on the axes with the worst cable congestion first, then standardize.

In dense cabinets, removing a dedicated encoder loom per axis is often worth more than the cable price delta.

The OCT system solution for S6 and F6 is available for specification through KEB America. The engineering homework that remains is prosaic and necessary: confirm HIPERFACE DSL encoder options on the motor, EMC shield landing practice on the hybrid cable, and Safety Module 5 behavior in the machine’s existing safety chain before the first production frame leaves the shop.