The PG Drives VR2 Power Control Module (Model D50679.07) is an original equipment manufacturer (OEM) motor controller manufactured by PG Drives Technology (a brand under Curtiss-Wright). This specific model is a non-programmable or factory-configured power module designed to govern the motor driving system, battery charging, and braking logic of select rehabilitation power wheelchairs.
Unlike a single-unit joystick controller, the D50679.07 is a bottom-end electronic control unit (ECU). It is housed in a heavy-duty, ribbed aluminum casing mounted directly down on the powerchair's base chassis near the batteries. It handles high-amperage current distributions directly to the drive motors while serving as the operational hub that links the batteries, magnetic brakes, and the top-end joystick module mounted on the armrest.
The system relies on the trusted VR2 control platform, which uses dedicated cable ports (recessed motor sockets, battery inputs, and a 4-pin communication cable connector to hook into the user's joystick unit).
While PG Drives VR2 units are universally recognized across the mobility industry, individual sub-variants are programmed with firmware specific to certain manufacturers. The D50679.07 sub-model is deeply associated with Permobil's hardware matrix:
- Primary Base Compatibility: Permobil C300 Power Wheelchairs.
- Ancillary System Compatibility: Depending on the factory wiring layout and amperage draws, it can also cross-reference with select Permobil K450 MX and early M300/M400 base models running base VR2 setups before those configurations transitioned entirely to the higher-end R-net expandable bus network systems.
Crucial Warning: VR2 power modules with varying trailing decimals (such as a .05, .07, or .08) possess different internal firmware presets and power limits. They are not inherently interchangeable across brands like Pride/Jazzy, Quickie, or Drive Medical without triggering system communication blocks or risking motor damage.
| Feature | Specification |
|---|
| Model / Engineering Code | D50679.07 |
| Primary Manufacturer | PG Drives Technology (Curtiss-Wright) |
| OEM Distributor | Permobil |
| System Protocol Type | VR2 Non-Expandable System Architecture |
| Operating Voltage Range | 24 VDC Nominal |
| Chassis Composition | Anodized Black Ribbed Aluminum Shell |
| Interface Connections | Dual motor ports, main battery lead input, and a yellow/black VR2 communication socket |
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