The Allen-Bradley 20-HIM-A3 is a PowerFlex Architecture Class Human Interface Module (HIM) designed to provide intuitive local control, configuration, and monitoring for Allen-Bradley PowerFlex drives. It is widely used across PowerFlex 70, 700, 700H, 700S, 700L, 753, and DC drive platforms, offering technicians a reliable keypad-based interface for parameter adjustment and real-time diagnostics.
This module is known for its full numeric keypad and LCD display, allowing users to efficiently navigate drive parameters, troubleshoot faults, and perform start/stop operations directly at the drive. Although it has been discontinued (October 31, 2023), it remains heavily installed in legacy systems worldwide and is commonly replaced by the 20-HIM-A6.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Human Interface Module (HIM) |
| Series | PowerFlex Architecture Class |
| Display | LCD (multi-line text display) |
| Keypad Type | Full numeric keypad |
| Communication Protocol | DPI (Drive Peripheral Interface) |
| Supply Voltage | 12 VDC (powered from drive) |
| Current Consumption | ~140 mA |
| Compatible Drives | PowerFlex 70 / 700 / 700H / 700S / 700L / 750 / 753 |
| Mounting Type | Drive-mounted or handheld |
| Operating Temperature | 0°C to 50°C |
| Humidity | 5–95% non-condensing |
Dimensions & Weight
| Item | Value |
|---|---|
| Height | ~30 mm |
| Width | ~76 mm |
| Length | ~157 mm |
| Weight | ~0.13 kg (130 g) |
Its ultra-compact form factor allows direct integration on drive doors or use as a portable diagnostic keypad, making it extremely flexible in maintenance environments.
Recommended Related Models
- 20-HIM-A6 – Direct replacement model with improved interface
- 20-HIM-C6S – Remote-mounted enhanced HIM with cable connection
- PowerFlex 755 HIM Series – Advanced color display interface modules
- 20-HIM-A5 – Simplified keypad variant for basic control tasks
- 20F11NC037JA0NNNNN – Compatible PowerFlex 753 drive platform
These options support modernization of legacy HIM systems while maintaining compatibility with existing Rockwell drive architectures.
Popular Allen-Bradley Models
- 20-HIM-A3
- 20-HIM-A6
- 20-HIM-C6S
- 20F11NC060JA0NNNNN
- 20G11NC065JA0NNNNN
The HIM family remains essential in Rockwell Automation ecosystems for on-site configuration, troubleshooting, and drive commissioning.
