Beckhoff C9900-E845 CP6xxx and CP7xxx Series Push-Button Extension

Description

For industrial systems requiring dedicated physical operator controls, the Beckhoff C9900-E845 integrates a right-side mounted interface expansion directly into CP6xxx and CP7xxx Control Panels and Panel PCs with 15-inch displays. Engineered for devices without integrated keyboards, this push-button extension bridges physical machine intervention with computerized HMI screens, providing operators with direct, tactile control options. The unit features 16 square, illuminated push-button keys and an integrated emergency stop button, accommodating both software-driven feedback and independent safety circuits.

Features

• Right-Side Configuration: Optimized form factor for seamless right-side structural mounting on 15-inch panels.
• Tactile Operator Keys: 16 Siemens Signum square push-button keys (30 x 30 mm) equipped with customizable inserts for unique function labeling.
• Integrated Status Indicator Lamps: Each of the 16 keys contains an active signal lamp for visual diagnostic feedback.
• Dedicated Emergency Stop: Includes a highly reliable Siemens Signum emergency stop key designed for immediate, hardwired circuit interruption.
• Dual-Path Transmission Architecture: Digital transmission of all push-buttons via CP-Link or USB using one normally-open contact, paired with an independent terminal row for secondary direct-wiring capability.

Applications

• CP6x02 and CP7x02 Control Environments: Direct physical interface expansion for Beckhoff CP6x02-00xx and CP7x02-00xx panel series.
• Tactile Override Consoles: Applications requiring high-frequency operator commands (such as jog, cycle start, or fault reset) alongside digital visualization.
• Safety-Integrated Control Stations: Production areas demanding a localized, physical emergency stop hardwired directly to functional safety relays.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

The C9900-E845 is designed exclusively for 15-inch diagonal screens within the classic CP6x02 and CP7x02 families. Because this product is currently in its service phase, ensure that physical spacing tolerances and bracket paths on mounting arms match the older panel revisions. Verify that your USB or CP-Link drivers are updated in your system images to ensure continuous transmission of key states.

Application Pitfalls & Engineering Notes

While the 16 standard push-buttons feature a redundant, dual-contact wiring design, the integrated LED signal lamps can only be driven via software commands through CP-Link or USB. This means that if the communication bus drops, the signal lamps will go dark even if the secondary hardwired terminal contacts are physically closed. Design auxiliary HMI screens to handle feedback loops accordingly.

Commissioning & Wiring Tips

When wiring the secondary normally-open contacts directly to terminal rows, use shielded control cables to prevent EMI from nearby high-frequency motor cables or variable frequency drives. Ensure the emergency stop wiring is integrated into a verified safety monitoring relay or safe input slice, and run functional testing to confirm the physical contact opens reliably under load.

Installation Guidelines