Model Definition

• 0-54394: Base part number (Base Driver Card)

• Full Revision: 0-54394-4 (most common)

• Alternative IDs: 054394, O-54394-4

• Status: Discontinued by manufacturer; no direct OEM replacement

• Cross-Reference: No fully compatible equivalent; requires exact part match

Technical Specifications

• Form Factor: Standard 3U PCB (approx. 248 × 171 mm)

• Weight: ~0.6 kg

• Logic Supply: ±15 VDC, +5 VDC (from system power supply 0-54390)

• Power Devices: 6 black power diodes, 4 black transistors, 2 silver transistors

• Passive Components: 5 orange square capacitors, 2 small round capacitors, electrolytic capacitors, resistors

• Protection: Overcurrent, short-circuit, and transient protection

• Operating Temp: 0 °C to +55 °C

• Mounting: 3U rack slot, goldfinger edge connector (AutoMax/MaxPak backplane)

Interfaces & Communication

• Backplane: 3U edge connector (receives logic power and control signals from CPU)

• Power Stage: Screw terminals / hardwired links to thyristor gates

• Internal Links: Flat-cable connectors for inter-board signaling

• No Network Ports: Hardwired driver card; no serial/Ethernet communication

Key Features

1. Thyristor Firing: Generates gate pulses for the DC drive’s power converter

2. Signal Amplification: Buffers and amplifies low-level control signals to drive power devices

3. Built-in Protection: On-board fuses and clamping components safeguard the power stack

4. Diagnostic LEDs: Status indicators for power, pulse, and fault conditions

5. 3U Rack Design: Directly interchangeable in AutoMax/MaxPak control racks

Application

• Drive Systems: AutoMax DC Drives, MaxPak Series DC Drives (50–2000 HP)

• Subassemblies: Converter control racks, power interface cabinets

• Industries: Steel, paper, mining, cranes, conveyors, machine tools

• Function: Primary gate driver for the DC drive’s thyristor-based power converter

Compatibility

• Compatible Racks: AutoMax DCS Rack, MaxPak Drive Rack

• Voltage Compatibility: 230/460/575 VAC DC drives

• Power Range: 50–2000 HP (matches AutoMax/MaxPak drive ratings)

Critical Notes

• Function Distinction: Different from 0-54390 (power supply) and 0-54392-2 (control board); this is a power driver card

• Replacement Challenge: No direct substitute; refurbished 0-54394-4 units are standard solution

• Availability: Limited stock; longer lead times; pricing varies by condition