KUKA C4 Modules: C4 00-284-170 00-271-601 00271601 Robot Mainboard

Technical Dossier

Product Details And Specifications

KUKA C4 Series: Comprehensive Module Range and Technical Overview

The KUKA C4 (KR C4) controller platform is the fourth-generation robot controller architecture from KUKA Roboter GmbH, deployed globally across heavy industrial sectors including automotive body-in-white assembly, chemical processing plants, nuclear facility material handling, and petroleum refinery automation. Introduced in 2009 as the successor to the KR C2 and KR C3 platforms, the KR C4 established a unified control architecture that consolidates robot control, PLC logic, motion control, and safety functions onto a single hardware backbone. Its PC-based open architecture, based on an Intel x86 platform running Windows Embedded, made it the dominant controller in high-density robot installations throughout the 2010s and into the 2020s. Installed base estimates exceed 300,000 units worldwide, making the C4 one of the most widely maintained robot controller platforms in industrial service today.

The Evolution of C4 Architecture

The KR C4 architecture replaced the proprietary DSE/DSP board topology of the KR C2 with a standardized PC motherboard and modular backplane design. Early C4 units (2009–2013) used Intel Core 2 Duo processors with DDR2 memory and a dedicated KPP (KUKA Power Pack) drive module. Mid-generation revisions (2013–2017) introduced the KR C4 compact and KR C4 smallsize variants, targeting collaborative and small-payload applications. Late-generation units (2017–present) integrated the KR C4 CK (Cabinet-free) and KR C5 transition models, with updated safety controllers (KSB, KSI) and EtherCAT-based I/O expansion.

Compatibility across C4 generations is constrained by firmware versioning (KUKA System Software, KSS 8.x). Mainboards, safety boards, and drive modules are not interchangeable between KR C2 and KR C4 without full controller replacement. Within the C4 family, backplane and power supply modules maintain a higher degree of cross-compatibility, but CPU and safety modules require matched KSS versions. Facilities operating mixed fleets of KR C4 and KR C5 controllers must maintain separate spare parts inventories.

KUKA C4 Full Catalog & Functionalities (SKU List)

The following SKUs represent the core module range of the KR C4 controller platform, classified by functional category. Each entry reflects a discrete field-replaceable unit (FRU) within the C4 cabinet architecture.

Mainboard / CPU Modules

• 00-284-170 / 00-271-601 (00271601): KR C4 robot mainboard; primary PC-based controller board integrating CPU, RAM, and system bus interface for KSS 8.x operation.
• 00-168-352: KR C4 mainboard assembly, early revision; compatible with KSS 8.2–8.3; Intel Core 2 Duo platform.
• 00-230-371: KR C4 CPU board, mid-generation; supports KSS 8.3–8.5; DDR3 memory architecture.
• 00-265-819: KR C4 compact mainboard; reduced-form-factor variant for smallsize and compact cabinet configurations.

Safety Controller Modules

• 00-168-353: KSB (KUKA Safety Board); dual-channel safety monitoring for axis-specific safe speed and safe position functions.
• 00-230-372: KSI (KUKA Safety Interface); external safety device integration module; supports PROFIsafe and CIP Safety protocols.
• 00-265-820: KSB2 safety board; updated revision with expanded safe I/O channel count; required for KSS 8.5+.

Drive / Power Modules

• 00-130-468: KPP (KUKA Power Pack) 600/20; main drive power supply; 600V DC bus, 20A continuous output.
• 00-130-469: KPP 600/64; high-current variant for KR 120–KR 500 payload class robots.
• 00-168-354: KSP (KUKA Servo Pack) 600/3x40; three-axis servo amplifier module; 40A per axis.
• 00-168-355: KSP 600/3x20; three-axis servo amplifier; 20A per axis; standard for KR 6–KR 60 class.
• 00-230-373: KSP 600/3x64; high-current servo pack for heavy-payload axes (A1/A2 on KR 500+).

I/O and Communication Modules

• 00-168-356: KUKA CCU (Cabinet Control Unit); system bus hub integrating EtherCAT, DeviceNet, and PROFIBUS interfaces.
• 00-230-374: EtherCAT I/O expansion module; 16DI/16DO; 24VDC; DIN rail mount within C4 cabinet.
• 00-265-821: PROFIBUS DP master module; supports up to 125 slave nodes; baud rate up to 12 Mbps.
• 00-284-171: DeviceNet scanner module; Class 1 and Class 3 connections; 64 node capacity.

Power Supply Modules

• 00-130-470: C4 cabinet 24VDC auxiliary power supply; 10A; powers CCU, I/O, and safety circuits.
• 00-168-357: UPS (Uninterruptible Power Supply) module for C4; maintains controller state during mains interruption for controlled shutdown.

Sourcing Hard-to-Find & Obsolete C4 Parts

The KR C4 platform entered its mature lifecycle phase circa 2020, with KUKA transitioning new robot shipments to the KR C5 architecture. As a result, a significant portion of the C4 module catalog — particularly early-revision mainboards (00-168-352, 00-230-371) and first-generation KSB safety boards — has been discontinued from KUKA's standard spare parts program. Lead times through authorized KUKA service channels for these parts now routinely exceed 16–26 weeks, with no guarantee of availability.

DriveKNMS maintains a dedicated inventory of KR C4 field-replaceable units sourced from decommissioned production lines, controlled factory surplus, and verified secondary market channels. All units are cataloged by part number, hardware revision, and firmware compatibility level. For facilities operating KR C4 controllers under long-term service agreements or in environments where controller replacement is not operationally feasible (nuclear, chemical, continuous-process industries), DriveKNMS provides lifecycle extension support including cross-reference matching for superseded part numbers and compatibility verification against installed KSS versions.

Quality Control for the C4 Range

KR C4 mainboards and safety modules present specific test challenges due to their integrated PC architecture and dual-channel safety logic. DriveKNMS applies the following verification protocol to all C4 modules prior to shipment:

• Visual and physical inspection: PCB examination for capacitor bulge, trace damage, connector pin integrity, and conformal coating condition.
• Power-on functional test: Mainboards are bench-powered and booted to BIOS/UEFI level to confirm processor, memory, and storage interface functionality.
• KSS compatibility verification: Where applicable, boards are tested under the target KSS version (8.2, 8.3, 8.5, or 8.6) to confirm OS-level recognition and driver loading.
• Safety board dual-channel validation: KSB and KSI modules are tested for correct dual-channel output response under simulated fault injection conditions.
• EtherCAT and fieldbus communication test: CCU and I/O modules are verified for correct frame transmission and node enumeration on a test backplane.
• Burn-in cycle: All repaired or refurbished boards undergo a minimum 48-hour thermal cycling burn-in at operating temperature range (0°C to 45°C).

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.