KUKA 00-228-934 / 00-228-936 / 00-168-334 Teach Pendant – KR C Series

KUKA Smartpad 00-228-934 / 00-228-936 / 00-168-334 — Operator Interface Architecture for KR C Series Robot Controllers

The KUKA Smartpad teach pendant, supplied under part numbers 00-228-934 (KR C2 variant), 00-228-936 (KR C4 EMD variant), and 00-168-334, is the primary human-machine interface for the KUKA KR C2 and KR C4 controller families. In any KUKA-based automation cell — whether a six-axis arc welding station, a palletizing gantry, or a precision assembly line — the Smartpad is the single point through which operators jog axes, load and modify KRL programs, monitor I/O states, and acknowledge safety faults. Its absence or failure halts the entire cell; its reliability is therefore a direct determinant of line availability.

Unlike generic HMI panels, the Smartpad is tightly coupled to KUKA System Software (KSS). The pendant communicates with the KRC controller over a dedicated Ethernet link, transmitting operator commands and receiving real-time axis position data, program state, and diagnostic messages at deterministic cycle rates. The display renders a full-color graphical interface that exposes the KSS operator panel, program navigator, and status bar simultaneously, eliminating the need for a separate PC monitor during routine operation and maintenance.

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Technical Parameters

Hardware Logical Analysis

The Smartpad’s internal architecture separates safety-critical signal paths from the data communication bus. The three-position enabling switch and the E-stop button are wired through a dedicated hardware safety channel that bypasses the pendant’s main processor. This means that even if the embedded OS encounters a fault, the safety signals remain functional — a design principle aligned with IEC 62061 SIL 2 requirements for robot safety systems.

The touchscreen controller operates independently of the KSS communication stack. Input events are timestamped at the hardware layer and queued for transmission over the Ethernet link, ensuring that operator commands are not lost during momentary network congestion. The pendant’s firmware implements a watchdog mechanism: if the Ethernet heartbeat from the KRC controller is absent for more than a configurable timeout period, the pendant transitions to a safe state and displays a connection-loss alert, preventing the operator from issuing motion commands to an unresponsive controller.

EMC hardening is achieved through shielded cable construction and ferrite suppression at the connector interface. The spiral cable’s shield is bonded to the pendant chassis ground, providing a continuous low-impedance return path that attenuates high-frequency noise generated by servo drives and welding power sources operating in the same enclosure. The pendant housing is constructed from glass-fiber-reinforced polymer, which provides mechanical rigidity without creating eddy-current paths that could distort the shield’s effectiveness.

The keypad matrix uses a scanned polling architecture with debounce filtering implemented in firmware, eliminating false key-press events caused by vibration — a common failure mode in pendants used on press-tending or stamping applications where floor vibration is significant. The display backlight is driven by a PWM controller with adjustable duty cycle, allowing operators to reduce brightness in low-ambient-light environments without degrading touchscreen sensitivity.

System Integration Benefits

• Single-pendant multi-generation coverage: The Smartpad platform spans both KR C2 and KR C4 controller generations, allowing maintenance teams to stock one pendant type as a spare for mixed-generation robot fleets, reducing spare-parts inventory cost and complexity.
• Deterministic I/O monitoring: The KSS interface exposed on the Smartpad provides real-time I/O state visualization at the controller’s scan cycle rate, enabling technicians to diagnose field-device faults without connecting a separate laptop or engineering workstation.
• Program-level diagnostics: The pendant’s program navigator displays the currently executing KRL line, variable values, and interrupt states, giving operators immediate visibility into program execution without halting the cycle — a capability that reduces mean time to diagnose (MTTD) for intermittent faults.
• Integrated safety compliance: The hardware E-stop and three-position enabling switch are pre-certified as part of the KUKA safety system, eliminating the need for external safety relay modules when replacing a pendant in an existing certified installation.
• Hot-swap support in supported configurations: On KR C4 systems with appropriate KSS versions, the Smartpad can be disconnected and reconnected without a full controller restart, reducing maintenance downtime during pendant replacement procedures.
• Axis jogging with configurable increment: The pendant provides selectable jog increments (continuous, 1°, 0.1°, 0.01° in joint space; mm-level in Cartesian space), enabling precise manual positioning for tooling setup and calibration without requiring program modifications.
• Fault acknowledgment and reset: Safety faults, drive errors, and software exceptions can be acknowledged and reset directly from the pendant without requiring access to the controller cabinet, reducing the physical effort and time required to recover from minor faults during production.
• Multi-language KSS interface: KSS supports multiple display languages selectable at runtime, making the Smartpad suitable for deployment in multinational manufacturing facilities without hardware modification.

Quality Assurance & Global Logistics

Every KUKA Smartpad unit dispatched from our Xiamen, China facility is sourced directly from authorized KUKA distribution channels or verified OEM-grade supply networks. Each unit undergoes a structured pre-shipment inspection protocol: physical integrity of the housing, display, cable assembly, and connectors is verified visually; part numbers on OEM labels are cross-referenced against the purchase order; and where test equipment is available, power-on functional verification of the display and communication interface is performed.

Units are packed in anti-static foam-lined cartons with corner protection inserts to withstand the mechanical stresses of international air and sea freight. Export documentation — including commercial invoice, packing list, and certificate of origin — is prepared in compliance with Chinese customs regulations and the import requirements of the destination country. We ship via DHL Express, FedEx International Priority, and UPS Worldwide Expedited, with typical transit times of 3–7 business days to Europe, North America, and Southeast Asia. For time-critical requirements, same-day dispatch is available for in-stock units when orders are confirmed before 14:00 CST.

All units are covered by a 12-month warranty from the date of shipment, covering manufacturing defects and component failures under normal operating conditions. Warranty claims are processed with a target response time of 2 business days, and replacement units are dispatched upon fault confirmation to minimize customer downtime.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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