Excellent PLC
System Integration Overview
The Allen Bradley 20-HIM-A3 Human Interface Module (HIM) is an intelligent operator interface designed for the PowerFlex 70 and PowerFlex 700 AC drive series. It provides local access for configuration, parameter adjustment, diagnostics, and manual control.
Within a system integration environment, the 20-HIM-A3 serves as the bridge between the operator and the drive system, allowing engineers to streamline commissioning, modify control parameters, and monitor drive performance without requiring external PCs or programming terminals.
Its compact form factor, reliable keypad response, and clear LCD display make it a preferred choice in distributed drive architectures where ease of access and diagnostic feedback are essential.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 20-HIM-A3 |
| Module Type | Human Interface Module (HMI / Drive Keypad) |
| Display Type | Alphanumeric LCD, backlit |
| Keypad Type | Full numeric keypad with navigation soft keys |
| Compatibility | PowerFlex 70 / 700 and other PowerFlex 7-Class drives |
| Interface Type | HIM (proprietary drive interface) |
| Power Supply | 12 V DC (from drive port) |
| Current Consumption | Approx. 140 mA |
| Operating Temperature | 0 °C – +50 °C |
| Storage Temperature | –40 °C – +70 °C |
| Protection Rating | IP66 (when handheld or panel-mounted) |
| Typical Dimensions | 90 mm × 35 mm × 120 mm |
| Weight | 0.09 kg |
| Mounting Options | Handheld or drive-mounted |
| Firmware Compatibility | HIM firmware Series B or later |
Applications / Use Scenarios
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Local drive configuration and monitoring for PowerFlex AC drives
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System commissioning and start-up in automation panels
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Drive diagnostics and parameter tuning during plant maintenance
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Operator-level control for standalone or networked drive systems
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Integration into OEM machine control panels requiring manual input capability
Advantages / Key Engineering Benefits
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Seamless Integration: Directly interfaces with PowerFlex 70/700 drives—no additional setup required.
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Efficient Parameter Navigation: Numeric keypad simplifies access to drive parameters and diagnostics.
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High Reliability: Industrial-grade construction with sealed keypad for long-term field use.
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Reduced Setup Time: Enables quick commissioning without a PC or external programming tool.
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Compact Footprint: Space-efficient design for enclosure or drive-door mounting.
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Firmware Upgradeable: Supports software updates for future drive compatibility.
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System Diagnostics: Displays fault codes, run status, and parameter values in real time.
