KUKA 00-118-966-C2 Interbus Fiber Optic Upgrade for KRC1/KRC2

Product Overview

KUKA 00-118-966-C2 Interbus Fiber Optic Upgrade for KRC1/KRC2: Smooth Migration from Legacy Robot Controllers

The KUKA 00-118-966-C2 is a dedicated Interbus fiber optic interface card engineered for integration into KUKA KRC1 and KRC2 robot controller cabinets. As KUKA progressively transitions its installed base toward the KRC4 and KRC5 platform, many production facilities operating legacy KRC1 and KRC2 systems face an urgent challenge: sourcing reliable, specification-matched replacement modules to sustain uptime without committing to a full controller overhaul. This product page is designed to support engineers and procurement teams navigating exactly that transition.

The 00-118-966-C2 card occupies a standard slot within the KRC1 or KRC2 controller backplane and manages the Interbus fieldbus communication layer via fiber optic cabling — a topology widely deployed in automotive body-in-white lines, press transfer systems, and general-purpose robotic workcells throughout the 1990s and 2000s. Replacing a failed or degraded card with a verified unit eliminates the need to re-engineer the entire fieldbus segment, preserving existing fiber runs, junction boxes, and remote I/O slaves already installed on the shop floor.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful KRC1 or KRC2 fieldbus restoration rarely involves a single card in isolation. In practice, the 00-118-966-C2 is most often deployed alongside a coordinated set of components that together restore or modernize the communication architecture of the robot cell.

On the controller side, engineers frequently address the KUKA KRC2 DSE-IBS-C33 main computer board and the KRC2 power supply unit (PSU) in the same service window, since aging capacitors in the PSU can cause intermittent Interbus faults that mimic a failed interface card. Confirming PSU rail voltages before card replacement avoids misdiagnosis.

At the fieldbus segment level, the Interbus ring typically connects to Phoenix Contact IBS ST 24 BK remote bus terminal modules and associated IBS ST 24 DI/DO digital I/O modules mounted in field junction boxes. If the fiber optic ring has been broken by a damaged segment, Interbus fiber optic repeater modules (such as the Phoenix Contact IBS OC-LK series) allow the ring to be re-closed without replacing the entire cable run.

For facilities considering a partial migration path — retaining the KRC2 mechanical and drive hardware while upgrading the communication layer — the KUKA KRC2 ProfiNet or DeviceNet gateway adapter can be evaluated as a longer-term complement, allowing the robot to participate in a modern Ethernet-based plant network while the Interbus segment remains operational for legacy peripheral I/O. Similarly, the KUKA teach pendant cable assembly (KCP2) and KRC2 servo amplifier modules (KSD series) are commonly refreshed during the same planned maintenance outage to maximize the return on downtime investment.

Where the robot cell interfaces with a host PLC — for example a Siemens S7-300 or S7-400 with a CP 342-5 Profibus DP master — the Interbus-to-Profibus gateway configuration should be validated after card replacement to confirm that the robot’s process data image maps correctly to the PLC’s I/O table. This step is particularly important in press-transfer and spot-welding applications where the robot’s ready/fault signals are interlocked with the line PLC.

Retrofit Guidance FAQ

Q: Do I need to re-program the robot after replacing the 00-118-966-C2?
No. The card replacement does not alter the robot program stored on the KRC2 hard disk. After seating the new card, re-initialize the Interbus master from the KSS service menu and verify that all remote bus terminals report a green status LED. No teach-in or path re-programming is required.

Q: Is the fiber optic cabling compatible with the replacement card?
Yes. The 00-118-966-C2 uses standard ST-type fiber optic connectors. Existing 62.5/125 µm or 50/125 µm multimode fiber runs are fully compatible. Clean the fiber end-faces with an appropriate fiber optic cleaning tool before reconnecting to avoid insertion-loss faults.

Q: Can this card be used in a KRC4 controller?
No. The KRC4 uses a different backplane architecture and does not accept KRC1/KRC2 interface cards. This unit is specifically for KRC1 and KRC2 cabinets.

Q: What if the Interbus ring does not initialize after card replacement?
First verify that all fiber connectors are fully seated and that no segment of the ring is broken (a broken ring prevents initialization). Use the Interbus diagnostic LEDs on the card and on each remote bus terminal to isolate the fault segment. If the ring initializes but one or more slaves are missing, check the individual IBS I/O module seating and power supply at the field junction box.

Q: Is the physical installation space the same as the original card?
Yes. The 00-118-966-C2 is a direct form-factor replacement. No bracket modification, DIN rail adaptation, or cabinet re-wiring is required.

Warranty Assurance

Every KUKA 00-118-966-C2 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each card undergoes a functional bench test to verify Interbus communication initialization, fiber optic transceiver output power, and backplane connector integrity. Units that do not pass the outgoing inspection are not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund based on the confirmed fault. Our after-sales team responds to warranty inquiries within one business day. We maintain stock of the 00-118-966-C2 and related KRC1/KRC2 spare parts to support rapid exchange without extended lead times.

For procurement teams requiring documentation, we can provide a test report, packing list, and commercial invoice with HS code declaration to support import clearance. Standard shipping from our Xiamen warehouse is via DHL Express or FedEx International Priority, with typical transit times of 3–7 business days to most destinations.

To confirm availability, request a quotation, or discuss volume pricing for maintenance contracts, contact our team directly.