KUKA KRC5 Modules: 00-291-556 | C500-291-556

Technical Dossier

Product Details And Specifications

KUKA KRC5 Series: Comprehensive Module Range and Technical Overview

The KUKA KRC5 (KUKA Robot Controller 5) is the fifth-generation robot controller platform deployed across global heavy industry, including petrochemical plants, nuclear facility maintenance operations, automotive body-in-white lines, and offshore refinery automation. As of 2026, the KRC5 platform represents KUKA's primary active controller architecture, succeeding the KRC4 and KRC2 lineages. Its modular backplane design, EtherCAT-based internal bus, and Windows 10 IoT-based KUKA System Software (KSS 8.x) make it the reference standard for six-axis and collaborative robot integration in process-critical environments.

The KRC5 is available in three cabinet variants: KRC5, KRC5 micro, and KRC5 nano, each targeting different payload classes and installation footprints. The teach pendant ecosystem — including the smartPAD and smartPAD-2 — interfaces directly with the controller via the X19 connector bus, making pendant assemblies such as the 00-291-556 / C500-291-556 a critical field-replaceable unit (FRU) in any KRC5 maintenance program.

The Evolution of KRC5 Architecture

KUKA's controller architecture has progressed through four major generations since the KRC1 (introduced in the late 1990s). The KRC2 (2000–2010) used a proprietary VxWorks real-time OS and parallel-port-based pendant connectivity. The KRC4 (2010–2020) introduced Windows Embedded Standard 7, EtherCAT motion bus, and the smartPAD teach pendant with capacitive touchscreen. The KRC5 (2020–present) consolidates these advances with a unified hardware platform, reduced cabinet volume, and native support for KUKA.SafeOperation, KUKA.WorkVisual 6.x, and OPC UA connectivity.

Compatibility between generations is limited: KRC4 smartPAD units are not electrically compatible with KRC5 X19 interfaces without an adapter harness. KRC2 pendants are entirely incompatible. This generational boundary makes sourcing correct KRC5-specific pendant assemblies — such as the 00-291-556 kit — a non-trivial procurement task, particularly for facilities running mixed-generation fleets.

KRC5 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the KUKA KRC5 ecosystem, classified by functional category. Each entry reflects a discrete field-replaceable or configurable module.

Teach Pendant & HMI Assemblies

• 00-291-556 / C500-291-556: KRC5 smartPAD-2 teach pendant complete kit with cable assembly and X19 connector harness.
• 00-168-334: smartPAD-2 teach pendant unit (pendant body only, without cable).
• 00-291-557: KRC5 smartPAD-2 replacement cable set, 10 m, with strain relief bracket.
• 00-291-558: KRC5 smartPAD-2 replacement cable set, 25 m, extended reach variant.
• 00-291-559: smartPAD-2 wall bracket mounting kit for pendant storage at workstation.

Controller Cabinet & Power Supply Modules

• 00-287-100: KRC5 main power supply unit (PSU), 48 VDC, 20 A output, DIN-rail mount.
• 00-287-101: KRC5 auxiliary 24 VDC logic power supply, 10 A, for I/O and safety relay bus.
• 00-287-102: KRC5 UPS module, 48 VDC, capacitor-based, for controlled shutdown on power loss.
• 00-287-200: KRC5 main contactor assembly, 3-phase, 400 VAC, with integrated surge suppressor.

Drive & Motion Control Modules

• 00-287-300: KRC5 KPP (KUKA Power Pack) servo drive, axes 1–3, 3 × 15 A peak current.
• 00-287-301: KRC5 KSP (KUKA Servo Pack) drive module, axes 4–6, 3 × 8 A peak current.
• 00-287-302: KRC5 KSP external axis drive module, single-axis, 15 A, for E1/E2 positioner integration.
• 00-287-303: KRC5 regenerative braking resistor module, 400 W continuous, panel-mount.

Safety & I/O Interface Modules

• 00-287-400: KRC5 safety interface board (SIB), dual-channel, SIL 2 / PLe certified, for external E-stop and safeguard integration.
• 00-287-401: KRC5 SIB extended module, 16 × DI safety, 8 × DO safety, for complex cell interlocking.
• 00-287-500: KRC5 EtherCAT I/O coupler, 16 DI / 16 DO, 24 VDC, for peripheral device integration.
• 00-287-501: KRC5 PROFINET adapter module, IRT-capable, for integration into Siemens TIA Portal cells.
• 00-287-502: KRC5 DeviceNet gateway module, for legacy automotive cell integration.

Computing & Communication

• 00-287-600: KRC5 PC unit (IPC), Intel Core i5, 8 GB RAM, 128 GB SSD, running KSS 8.x.
• 00-287-601: KRC5 IPC replacement SSD, pre-imaged with KSS 8.7, plug-and-play recovery module.

Sourcing Hard-to-Find & Obsolete KRC5 Parts

Although the KRC5 platform is currently in active production, specific sub-assemblies — particularly teach pendant kits such as the 00-291-556 / C500-291-556 — frequently reach end-of-availability through OEM channels due to revision changes and supply chain constraints. DriveKNMS maintains a dedicated inventory of KRC5 FRUs sourced through authorized distribution networks and verified secondary market channels.

For facilities operating KRC4 alongside KRC5 controllers, DriveKNMS provides cross-generation compatibility assessments to determine whether a given spare part can be adapted or must be replaced with a generation-specific unit. All sourced components are accompanied by full traceability documentation including batch records and inspection certificates.

Quality Control for the KRC5 Range

KRC5 components present specific test challenges due to the platform's EtherCAT-based internal communication bus and dual-channel safety architecture. DriveKNMS applies the following verification procedures to all KRC5 units prior to dispatch:

• Teach Pendant Functional Test: Each smartPAD-2 assembly (including 00-291-556) is connected to a live KRC5 controller running KSS 8.7. Full button matrix, deadman switch (3-position enabling device), emergency stop circuit, and touchscreen calibration are verified against KUKA factory acceptance criteria.
• Drive Module Load Test: KPP and KSP modules are tested under simulated axis load using a resistive load bank. Peak current delivery, thermal shutdown threshold, and regenerative braking response are logged.
• Safety Interface Board Validation: SIB modules undergo dual-channel input/output verification per IEC 62061 SIL 2 test protocol. Response time to E-stop signal is measured and must be ≤ 12 ms.
• IPC Burn-In: Replacement IPC units run a 48-hour burn-in cycle under KSS 8.x with continuous motion simulation to screen for early-life failures.
• Cable Assembly Continuity & Insulation Test: All pendant cable assemblies are tested for pin-to-pin continuity, shield integrity, and 500 VDC insulation resistance (> 100 MΩ).