Beckhoff C9900-E515 CP6xxx and CP7xxx Series Push-Button Extension

Description

Designed to expand physical operator control layout directly on the machine-mount level, the Beckhoff C9900-E515 provides integrated mechanical switches and signaling for CP6xxx and CP7xxx Control Panels and Panel PCs. This hardware extension mounts on the right side of 15-inch displays that do not feature built-in keyboards. It bridges the gap between software-based touch operations and safety-critical physical command interfaces, ensuring immediate tactile response for machine operators in high-reliability environments.

Features

• Ergonomic Layout: Designed for seamless mechanical alignment on the right-hand side of 15-inch display housings.
• Tactile Control Array: Equipped with 16 push-button keys featuring integrated signal lamps for clear status feedback.
• Standardized Actuators: Uses square Siemens Signum type (30 x 30 mm) push-button components.
• Dedicated Safety Control: Features one Siemens Signum emergency stop key designed for direct physical wiring to safety circuits.
• Dual-Channel Transmission: Supports transmission via CP-Link or USB with one normally-open contact, alongside a direct-wire terminal row for a second normally-open contact.
• Custom Labeling: Features field-replaceable push-button caps allowing individual insert labels for custom symbols or text.

Applications

• Custom HMI console integration on CNC machinery and production lines.
• Main control panel expansion for CP6x31-00xx and CP7x31-00xx environments.
• Automotive assembly cell control requiring physical emergency stop and feedback indicators.
• Process control environments demanding mechanical override push-buttons alongside touchscreen interfaces.

Technical Specifications Table

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This expansion panel is designed specifically for 15-inch displays without a built-in keyboard unit. Attempting to fit this hardware extension onto smaller (12-inch) or larger (19-inch) panels is not mechanically viable due to mounting hole spacing mismatch and physical height variations. If dealing with legacy installations, note that the internal logic boards are hard-configured for either CP-Link or USB connection protocols depending on the host panel’s input card variant.

Application Pitfalls & Engineering Notes

While status signal transmission for standard push-buttons can safely run via CP-Link or USB communication, critical safety functions must never depend solely on these bus channels. The integrated Emergency Stop button and the second normally-open (NO) contacts are intentionally isolated. To ensure proper functional safety compliance (Performance Level d/e), always route the Emergency Stop contact blocks to dedicated external safety relay units or TwinSAFE input modules.

Commissioning & Wiring Tips

When routing auxiliary wiring from the internal terminal row, utilize shielded cables to prevent electromagnetic coupling within environments featuring large variable frequency drives (VFDs). The 30 x 30 mm Siemens Signum switch caps can be easily removed using a standardized extraction tool; when installing custom printed labels, ensure the material used can withstand operating temperatures inside closed enclosures, which can regularly reach up to 55 degC.

Installation Guidelines