Beckhoff C9900-E557 CP6xxx and CP7xxx Push-button Extension

Name: Beckhoff C9900-E557 CP6xxx and CP7xxx Push-button Extension
Brand: BECKHOFF
SKU: C9900-E557

Only 10 item(s) left in stock

Manufacturer: BECKHOFF
Product No.: C9900-E557
Country of origin:Germany
Product Type: HMI Control Accessories
Payment: T/T, Western Union
Weight: 500g
Dimensions: drawings with dimensions of the push-button e x tensions as AutoCAD DXF file
Shipping port: Xiamen
Warranty: 12 months

Description

Designed for physical operator control integration, the Beckhoff C9900-E557 provides a ruggedized, right-side push-button extension for CP6xxx and CP7xxx Control Panels and Panel PCs equipped with 15-inch displays and function keys. This expansion module bridges the gap between digital HMI commands and direct physical actuation, enabling critical control signals to bypass network latency during setup or emergency conditions. Operating in its service phase, this module ensures legacy compatibility and direct physical feedback on industrial production floors.

Features

Physical Control Interface: Equipped with 16 square push-button keys (30 x 30 mm, Siemens Signum type) featuring integrated signal lamps.
Dedicated Safety Control: Integrated Siemens Signum emergency stop key, directly wireable for hardwired safety-loop integration.
Customizable Layouts: Insertable labels for push-button caps allow custom engraving or labeling to match specific operator function designs.
Hybrid Communication: All 16 push-buttons utilize a dual-contact architecture, transmitting one normally-open (NO) contact via CP-Link or USB, while a second NO contact is wireable directly to local terminal rows.
Independent Indicator Control: Signal lamps are driven directly via the host panel interface (CP-Link or USB), allowing flexible software-driven feedback.

Applications

Custom operator stations for automotive manufacturing and assembly plants.
Heavy industrial machinery requiring redundant physical control switches alongside touch interfaces.
Retrofits of legacy CP6x12-00xx and CP7x12-00xx installations requiring standard compliance upgrades.

Technical Specifications

Parameter	Specification
Manufacturer	Beckhoff Automation
Model Number	C9900-E557
Compatible Host Panels	CP6x12-00xx and CP7x12-00xx (15-inch displays)
Mounting Configuration	Right-side panel attachment
Operator Elements	16x push-buttons with signal lamps (Siemens Signum, 30 x 30 mm)
Emergency Stop	1x Siemens Signum emergency stop key, directly wireable
Communication Interface	USB or CP-Link (primary NO contacts and lamp signals)
Direct Output Terminals	Internal terminal row for hardwired secondary NO contacts
Country of Origin	Germany
Shipping Weight (Calculated)	5.0 kg

Connections and Interfaces

Connector / Terminal Row	Function / Assignment
CP-Link / USB Bus Connection	Transmits digital keypresses (1st NO contact) and controls LED signal lamps.
Internal Terminal Strip	Direct screw terminal interface for secondary hardwired NO contacts.
E-Stop Contact Blocks	Independent, direct-wire contacts for safety relay or safety PLC connection.

Empirical Engineering Insights

Alternative Models & Compatibility: Ensure your host model is a true 15-inch display (CP6x12 or CP7x12). Variations of this extension exist for left-side mounting and alternative display sizes; swapping left and right side models is not mechanically possible due to the asymmetric housing alignment and integrated wiring paths.

Application Pitfalls & Engineering Notes: Because the primary NO signals and indicator lights run over CP-Link or USB, do not use the software-interfaced button contacts for safety-critical interlocking or safety functions. Use the hardwired terminal row for safety-related actions, and route the Emergency Stop directly to certified safety monitoring relays.

Commissioning & Wiring Tips: To maintain the host panel's overall IP rating, ensure the interface gasket between the C9900-E557 housing and the Control Panel is properly seated and tightened to OEM specifications during installation. If using long USB segments, ensure an active repeater or high-quality shielded USB cables are utilized to prevent transmission drops of the button status.

Installation Guidelines

CRITICAL WARNING

Isolate all electrical power sources before commencing installation. De-energize both the primary Control Panel feed and any external auxiliary supply voltages wired to the internal terminal strip. Secure against accidental reconnection.

Carefully remove the right-side cover plate from the compatible Beckhoff CP6xxx or CP7xxx Control Panel.

Align the C9900-E557 extension module with the mounting tracks, ensuring the rubber seal is completely flush and free of folds.

Route internal connection cables (USB/CP-Link internal connector) to the designated interface board on the host panel.

Wire the secondary direct-acting terminals and safety-critical emergency stop lines using appropriate wire gauges and terminal tools.

Secure all mechanical fasteners, close the housing enclosure, apply power, and verify button functionality and E-stop circuit continuity.

Key Features:

#Beckhoff CP6xxx #HMI Control Accessories

Can the buttons on the C9900-E557 be mapped to functional PLC inputs?

Yes. Each of the 16 buttons transmits its primary normally-open (NO) contact status back to the host system via CP-Link or USB. They can be configured as inputs within TwinCAT or another HMI development environment.

Is the emergency stop switch safe for SIL-rated safety circuits?

Yes. The integrated Siemens Signum emergency stop switch is fully independent of the USB/CP-Link bus. It features hardwired, direct-acting contact terminals, allowing integration into standard hardwired dual-channel safety loops or safety PLCs.

Does this extension block work on both the left and right sides of the HMI?

No. The C9900-E557 is specifically engineered and constructed for mounting on the right-hand side of compatible CP6xxx and CP7xxx 15-inch panels only.

What happens if the USB or CP-Link connection is lost?

If communication is lost, the HMI software will lose status tracking for the 16 standard buttons, and lamp indicators will turn off. However, any circuits wired directly to the local terminal row (such as the second NO contact or the physical E-stop) will continue to operate normally as they do not depend on the active data link.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin

Beckhoff C9900-E557 CP6xxx and CP7xxx Push-button Extension