Overview
The Allen-Bradley 20-HIM-A3 is a PowerFlex Architecture Class human interface module (HIM) designed for local control and monitoring of PowerFlex variable frequency drives. This compact, portable device combines an integrated LCD display with a full numeric keypad, enabling technicians and operators to adjust drive parameters, perform diagnostics, and monitor real-time drive status directly at the equipment. The unit supports both handheld and drive cover-mount configurations, providing flexibility for commissioning, troubleshooting, and maintenance workflows.
Key Features
- Full numeric keypad for intuitive parameter entry and navigation
- Integrated LCD display for clear parameter viewing and diagnostics
- Dual mounting options: handheld operation or direct drive-cover installation
- Direct control terminal block connection to PowerFlex drives
- Sealed keypad design suitable for harsh industrial environments
Technical Specifications
- Part Number: 20-HIM-A3
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Product Series: PowerFlex Architecture Class HIM
- Display Type: LCD
- Keypad Type: Full Numeric
- Mounting Options: Drive Cover Mount or Handheld
- Weight: 0.29 lb (0.13 kg)
- Standards/Certifications: CCC, CE, CUL, KC, UL
- UPC: 662453737881
Typical Applications
The 20-HIM-A3 is widely used for:
- Commissioning and startup of PowerFlex AC variable frequency drives
- On-site parameter adjustment and troubleshooting
- Real-time monitoring of drive performance and fault diagnostics
- Local speed and acceleration control in production environments
- Training and maintenance support for industrial automation technicians
Compatibility & Replacements
The 20-HIM-A3 is compatible with PowerFlex 70, 700, 700H, 700S, and 700L drive models. It is not compatible with PowerFlex 753 or 755 drives. This unit was discontinued effective October 31, 2023. For new installations or replacements, Rockwell Automation offers the 20-HIM-A6 as the direct replacement product. The A3 remains suitable for field maintenance and spare inventory in existing PowerFlex 7-series installations.
