Model Identification

• Part Number: HD-2158 (rev. ‑3 common)

• Yaskawa Code: 86A1230A

• Assembly No.: NDR0102‑4

• Power Rating: 16 kW

• Manufacture Date: 1978‑12 (vintage industrial board)

• Manufacturer: Yaskawa Electric (Japan)

• Application: Legacy Yaskawa drives & motion controllers

Technical Specifications

Electrical

• Signal Type: Analog output (voltage/current)

• Output Range: ±10 VDC / 4–20 mA (typical)

• Resolution: 12‑bit

• Accuracy: ±0.1% full scale

• Power: 24 VDC, ±15 VDC (internal)

• Isolation: 2500 Vrms (input‑output)

Mechanical & Environmental

• Form Factor: Large plug‑in PCB (card edge connector)

• Dimensions (approx.): 380 mm × 235 mm × 25 mm (15″ × 9.25″ × 1″)

• Weight: ~2.7 kg (6.0 lbs)

• Operating Temp: 0 °C to +50 °C

• Storage Temp: −20 °C to +70 °C

• Humidity: 10%–85% RH, non‑condensing

• Construction: FR‑4, through‑hole components, ESD‑protected

Core Functions

1. Digital‑to‑Analog Conversion (DAC): Converts controller digital commands to smooth analog signals for motor speed/torque control.

2. Motor Regulation: Provides voltage/current adjustment, speed control, and direction control for AC/DC motors.

3. Signal Conditioning: Amplifies, filters, and isolates analog signals to reduce noise and ensure stability.

4. System Interface: Connects to Yaskawa drive backplanes (edge connector) and external motor/encoder circuits.

5. Overload Protection: Built‑in current limiting and thermal shutdown for safety.

Application

• Primary Use: Legacy Yaskawa 16 kW motor drives, motion controllers, and automation systems.

• Key Industries: Heavy machinery, metalworking, conveyor systems, and industrial robotics (1980s–1990s).

• Compatibility: Not a direct replacement for modern Yaskawa boards (NXC100, DX100, etc.).

Maintenance Notes

• ESD Handling: Always use anti‑static gloves/mats; highly sensitive to static discharge.

• Connector Care: Clean edge connectors with contact cleaner; check for wear or oxidation.

• Component Check: Inspect electrolytic capacitors (common failure in vintage boards) and power transistors.

• Replacement: Use original HD-2158‑3 / 86A1230A for legacy systems; modern equivalents available for upgrades.