Description
Product overview
The ABB CP651-WEB is intended for installations where an operator needs a local touchscreen view of process information hosted by a compatible web server. Its built-in microbrowser distinguishes it from the standard CP651, which is designed for applications developed with Panel Builder 600. For an existing installation, that difference matters: replacing one variant with the other may require a different visualization approach rather than a simple hardware exchange.
The panel provides two 10/100 Mbit Ethernet interfaces, a software-configurable RS-232/RS-422/RS-485 serial port, two USB host ports, an SD card slot, and two expansion slots. Its 24 VDC power input accepts 18–32 VDC, and the front panel is rated IP66 while the rear housing is IP20. These features support panel-mounted operator access, but the application still depends on the web server version, network setup, and supported browser functionality. Before ordering, confirm the exact product number and existing project configuration, especially because ABB lists the model in the Classic life-cycle phase.
Product introduction
For maintenance teams, the CP651-WEB is most relevant when restoring an existing AC500 web-visualization station. The physical display is only part of the replacement decision; the panel must also be compatible with the server-side visualization and network arrangement.
When sourcing a replacement, ask for the complete label, hardware revision, and condition. If the panel is used or refurbished, confirm touchscreen operation, display condition, Ethernet connectivity, serial-port operation where applicable, and the scope of any functional testing.
Key technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | CP651-WEB |
| Order number | 1SAP551200R0001 |
| Product family | CP600 |
| Product type | Web-based HMI control panel |
| Display size | 10.4 inches |
| Display technology | TFT color, LED backlight |
| Touchscreen | Single-touch |
| Resolution | 800 × 600 pixels |
| Color depth | 64K colors |
| Web visualization | Microbrowser for AC500 V2.3 web server |
| Ethernet | 2 × 10/100 Mbit |
| Serial interface | 1 × RS-232/RS-422/RS-485, software configurable |
| USB | 2 × USB host |
| Removable storage | 1 × SD card slot |
| Expansion slots | 2 |
| RAM | 256 MB |
| Flash memory | 256 MB |
| Supply voltage | 24 VDC nominal; 18–32 VDC |
| Current consumption | 1.0 A from 24 VDC |
| Power consumption | Listed as 24 W in product data |
| Front protection | IP66 |
| Rear housing protection | IP20 |
| Operating temperature | 0°C to +50°C |
| Storage temperature | −20°C to +70°C |
| Dimensions (W × H × D) | 287 × 232 × 60 mm |
| Net weight | Approximately 2.05 kg |
| Mounting | Front-face / panel mounting |
| Life-cycle phase | Classic |
Specifications are based on ABB’s CP651/CP651-WEB datasheet and associated product data.

CP651-WEB
Related products
| Model | Relationship |
|---|---|
| (1SAP551100R0001) | Similar 10.4-inch panel, but intended for Panel Builder 600 applications |
| CP635-WEB (1SAP535200R0001) | Smaller CP600 web-visualization panel |
| CP630-WEB (1SAP530200R0001) | Smaller CP600 web-visualization panel |
| CP661-WEB (1SAP561200R0001) | Larger 12.1-inch web-visualization panel |
| CP665-WEB (1SAP565200R0001) | 13.3-inch CP600 web-visualization panel |
| CP676-WEB (1SAP576200R0001) | 15-inch CP600 web-visualization panel |
| AC500 PLC | Controller family associated with the -WEB’s web-server application |
These are related products, not guaranteed direct substitutes. Screen size, cutout dimensions, software support, visualization method, and wiring must be checked before selecting an alternative.
Frequently asked questions
1. What is the ABB -WEB used for?
It provides local touchscreen visualization of a compatible AC500 V2.3 web server through its integrated microbrowser.
Is interchangeable wi651?
Not automaticaThe is designed for web-server visualization, while the standard is intended for Panel Builder 600 applications. Confirm the software architecture before substitution.
3. What power supply does it require?
The specified input is 24 VDC nominal, with an operating range of 18–32 VDC. Confirm wiring polarity and terminal details in the installation documentation.
4. Does it support Ethernet and serial communications?
Yes. It has two 10/100 Mbit Ethernet interfaces and one software-configurable RS-232/RS-422/RS-485 serial interface.
5. Can it be used in a washdown environment?
The front panel is rated IP66, but the rear housing is IP20. Installation must preserve the front seal and keep the rear of the unit within a suitable enclosure.
6. What should be checked before ordering a replacement?
Verify the order number 1SAP551200R0001, display and touch operation, hardware revision, web-server compatibility, panel cutout, power requirements, and network connections.
7. What testing should be requested for a used unit?
Ask for evidence of display and touchscreen operation, startup behavior, Ethernet link and communication checks, and serial-port testing if the application uses it. The supplier should state clearly whether testing was completed or the unit is being sold untested.
Procurement recommendation
The key decision forABB is not just screen size. Confirm that the web-based visualization architecture matches the existing installation, then verify the exact order number and physical condition. Since ABB lists this model in the Classic life-cycle phase, it is sensible to document the installed software version and consider a qualified migration path if a like-for-like replacement is not available.
