Allen-Bradley PowerFlex 20-HIM-A3 Digital Keypad Interface Module

Overview

The 20-HIM-A3 is a Human Interface Module (HIM) designed by Allen-Bradley for PowerFlex AC drives.
It provides a user-friendly interface for monitoring, configuring, and controlling variable frequency drives (VFDs).
Equipped with a backlit LCD display, soft navigation keys, and parameter access functions, the module enhances real-time drive management and commissioning efficiency.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)

• Model / Part Number: 20-HIM-A3

• Product Type: Human Interface Module (HIM Keypad)

• Compatible Series: PowerFlex 4, 40, 70, 700, and 755 drives

Electrical & Display Characteristics

• Display Type: LCD with backlight

• Display Lines: 4 lines, 16 characters per line

• Power Source: Supplied from the drive (no external power required)

• Interface Type: Drive-mounted or remote-mounted via 1202 cable

• Keypad Type: Tactile membrane with navigation and function keys

• Communication Port: RS-485 / DSI port

• Memory Function: Non-volatile parameter storage

Environmental Ratings

• Operating Temperature: 0°C to +50°C (32°F to 122°F)

• Storage Temperature: –40°C to +85°C (–40°F to 185°F)

• Relative Humidity: 5% to 95% non-condensing

• Vibration Rating: 2 g, 10–500 Hz

• Shock Resistance: 15 g (operating), 30 g (non-operating)

• Enclosure Type: NEMA/UL Type Open

Physical Characteristics

• Dimensions: 100 × 75 × 35 mm (3.9 × 2.9 × 1.4 in)

• Mounting Options: Drive front or panel mount with adapter

• Weight: 0.25 kg (0.55 lb)

Application Notes

The 20-HIM-A3 module simplifies drive setup and diagnostics by providing access to drive parameters, real-time data monitoring, and fault history logs.
It is ideal for use in commissioning, maintenance, and operator control environments. The HIM can be used directly on the drive or as a remote-mounted control station for convenient access in control panels or operator consoles.

FAQ

Q: Can the 20-HIM-A3 be used with multiple PowerFlex drive models?
A: Yes, it supports several PowerFlex series drives including PowerFlex 4, 40, 70, and 700 models.

Q: Does the HIM module store configuration data?
A: Yes, it includes non-volatile memory for parameter storage and transfer between drives.

Q: Can it be remotely mounted?
A: Yes, with the use of a 1202 communication cable, the HIM can be remotely installed up to 3 meters away.

Q: Does the display support multilingual operation?
A: Yes, it supports multiple languages for simplified international deployment.