Allen-Bradley 20-HIM-A6 is a Human Interface Module (HIM)

        20-HIM-A6 is an enhanced Allen-Bradley NEMA Type 1 Human Interface Module that is either hand-held or locally mounted onto a PowerFlex® drive. It features a flashing LCD display screen and a Full-numeric keypad with fully-integrated navigation capabilities. The keypad also includes dynamic soft-keys. In essence, the 20-HIM-A6 is an Enhanced, Handheld or Drive Mounted, NEMA Type 1 HIM with a Full-Numeric Keypad and a Flashing LCD screen, as shown below:

Technical specifications

A Newly Developed Flashing LCD Screen that provides improved visibility whenever alarms or drive faults are detected.

A Full-Numeric Interface Keypad that’s enhanced with Fully-Integrated Navigation Capabilities. With this keypad, operators can easily configure the compatible PowerFlex® drives as well as the connected peripherals. To provide navigation functionality, the 20-HIM-A6 interface keypad includes five multi-function keys. These keys are blue in color, and they include key 2, key 4, key 5, key 6, and key 8. They are used to perform specific navigation functions including:  

• Entering their respective numeric value

• Scrolling through menu structures or HIM screens  

• Performing intended actions via corresponding functions shown in the HIM Data Area. The Data Area displays the drive functions or data that are currently being acted upon.  

• Improved Keypad Tactile Feel and Better Touch Response that provides a more gratifying and error-free data input process to the operator.

• Increased HIM Operating Efficiency due to a provision of new menu structures and a more intuitive HIM access.  

Simplified Assignment of Custom Names to PowerFlex® drives and connected peripherals (i.e. Pump A). This reduces the required keypad presses.

Support for Customary Asian and European Languages, in addition to the default support for the English language.

Single-Function Keys that always perform only their dedicated function. The 20-HIM-A6 includes four such keys, namely:  

Start key, which starts the host drive.

Folders key, which accesses folders for memory functions, parameters, preferences, diagnostics, and other tasks.  

Controls key, which accesses various control functions like jog mode, auto/manual, and direction functions.  

Stop key that stops the host drive and is also used to clear any fault. This key is active all the time and is controlled by the host drive parameter 307[Start/Stop Mode]

Dynamic Soft Keys that change drive names or functions based on the present data entry mode or screen type. This helps simplify HIM operation and reduce the number of required keypad keys. Soft keys are situated at the top-most section of the 20-HIM-A6 keypad.  

The name and function of a given soft key can change depending on the data entry mode in use or the type of screen that’s being displayed. So, whenever a dynamic soft key is active, its current function and corresponding label are indicated at the bottom part of the 20-HIM-A6 screen. Note, at most five HIM soft keys can be simultaneously active.

Adjustable drive monitoring elements 

that can be displayed as a list of items on the HIM’s process screen or as individual status screens.Note: To display the Process screen on a 20-HIM-A6 interface module, you’ll have to press the ESC soft-key found on the HIM’s Status screen. The Status screen is shown by default once the Human Interface Module is powered on. The Process screen displays various monitoring parameters of the host drive. At this point, the operator can change the displayed default drive monitoring parameters. Also, the user can select Single-line or Multi-line views of the Process screen by pressing the VIEW soft key on the HIM keypad.