Product Overview
The ALLEN-BRADLEY 20-HIM-A6 is an enhanced Human Interface Module (HIM) designed as a local operator terminal for the PowerFlex 753 and PowerFlex 755 AC drives, as well as all PowerFlex 7-Class drives and SMC Flex/SMC-50 smart motor controllers . As a member of Rockwell Automation’s Architecture Class HIM series, this module serves as the primary interface for drive configuration, real-time monitoring, and on-the-fly parameter adjustments without requiring a computer connection . It transforms a standard variable frequency drive into a fully manageable and controllable asset on the plant floor.
The ALLEN-BRADLEY 20-HIM-A6 connects to the drive via the Drive Peripheral Interface (DPI) protocol, establishing a communication link at 125 kbps or 500 kbps, automatically negotiated with the host drive . Its multi-line, backlit LCD display presents parameter names in plain text rather than cryptic codes, and fault descriptions in readable language . Key features include a full-numeric keypad with tactile feedback, intuitive menu structures, customizable drive monitoring screens, and a flashing LCD screen that immediately alerts operators to fault or alarm conditions . This combination of hardware and software capabilities makes the ALLEN-BRADLEY 20-HIM-A6 an indispensable tool for drive commissioning, troubleshooting, and maintenance in industrial automation environments.
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | 20-HIM-A6 |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Type | Enhanced Human Interface Module (HIM) |
| Display | Multi-line backlit LCD, full-text parameter names |
| Keypad | Full-numeric with navigation keys and dynamic soft keys |
| Communication Protocol | DPI (Drive Peripheral Interface) |
| Communication Speed | 125 kbps / 500 kbps (auto-negotiated) |
| Power Supply | 12V DC, supplied by host drive via DPI port |
| Power Consumption | 140 mA @ 12V DC |
| Enclosure Rating | NEMA Type 1 / IP20 |
| Mounting Options | Direct drive mount or remote bezel installation |
| Dimensions (H×W×D) | 116.0 mm × 70.0 mm × 16.0 mm |
| Weight | Approx. 0.09 kg (91 g) |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Language Support | English, French, German, Spanish, Italian, Portuguese, Dutch, Chinese, Japanese |
| Certifications | UL 508C, cUL, CE, C-Tick |
Main Features and Advantages
Enhanced Display and User Interface: The ALLEN-BRADLEY 20-HIM-A6 features a multi-line backlit LCD that displays parameter names in clear, readable text rather than numeric codes, making navigation more intuitive and reducing the risk of configuration errors . Its full-numeric keypad is complemented by dynamic soft keys that change function based on the current screen context, while dedicated Start and Stop keys enable direct drive control when the HIM is in control mode . The display flashes during fault or alarm conditions, ensuring immediate visual notification of critical events even in noisy plant environments .
Superior to Basic HIM Models: The ALLEN-BRADLEY 20-HIM-A6 offers substantial improvements over earlier basic HIMs (such as the 20-HIM-A3 and 20-HIM-A5) . Key enhancements include a more responsive keypad with improved tactile feel for error-free data entry, streamlined menu structures for faster navigation, simplified custom name assignments (e.g., labeling a drive “Pump 1” rather than relying on parameter numbers), and customizable drive monitoring screens . These improvements significantly increase operator efficiency and reduce commissioning time.
CopyCat Parameter Cloning: The ALLEN-BRADLEY 20-HIM-A6 includes built-in non-volatile memory that supports the CopyCat function, enabling users to store a complete drive parameter configuration and replicate it across multiple identical drives . This feature drastically reduces setup time in multi-drive applications and ensures consistent performance across a fleet of equipment, eliminating manual parameter entry errors.
Versatile Installation and Remote Mounting: The ALLEN-BRADLEY 20-HIM-A6 can be installed directly into the HIM bezel on the front of the drive (Port 1) for permanent local operation . For hand-held operation during commissioning, it can be temporarily connected to Port 2 using a 20-HIM-H10 cable . For applications requiring the HIM to be accessible from a control cabinet door or operator station, remote mounting is supported using the 20-HIM-B1 remote-mount bezel kit, which includes a 3-meter cable . This installation flexibility ensures the operator interface can be positioned wherever it is most convenient.
