Reliance DC3N-12D-00-010-AI Non-Regenerative DC Drive
The Reliance DC3N-12D-00-010-AI is an open‑chassis, single‑phase non‑regenerative DC drive from the DC3N series, designed for cost‑effective, precise speed and torque control of permanent‑magnet and shunt‑wound DC motors. Engineered for light‑to‑medium duty industrial applications, it combines compact open‑frame construction, simple setup, and dependable performance in a space‑saving design.
Overview
The DC3N-12D-00-010-AI converts 115VAC or 230VAC single‑phase input (50/60Hz) into adjustable DC voltage for armature and field control. It delivers 90VDC armature output at 115VAC (1/4–1HP) and 180VDC at 230VAC (1/2–2HP), with a maximum continuous armature current of 10.6ADC. The open‑chassis (plate‑mount) design facilitates direct installation inside control cabinets or on machinery, optimizing space utilization. It features a half‑wave field supply, full‑wave half‑controlled armature rectifier, and comprehensive trim adjustments for speed, acceleration, deceleration, and current limit, enabling precise tuning for diverse motor and load profiles.
Key Specifications
Model: DC3N-12D-00-010-AI (Reliance Electric, DC3N Series)
Motor Compatibility: Permanent‑magnet DC, shunt‑wound DC motors
Input Voltage: 115VAC / 230VAC, single‑phase, 50/60Hz
Output Voltage: 90VDC (115VAC) / 180VDC (230VAC)
Power Rating: 1/4–1HP @ 115VAC, 1/2–2HP @ 230VAC
Rated Armature Current: 10.6ADC continuous
Speed Range: 20:1 constant torque (30:1 with tachometer feedback)
Enclosure: Open chassis (plate mount, no protective casing)
Cooling: Natural convection (open‑frame airflow)
Adjustments: Min/max speed, acceleration (0.5–10s), deceleration (0.5–10s), current limit, IR compensation
Feedback: Tachometer input for closed‑loop speed regulation
Protection: Overcurrent, overvoltage, thermal overload, short‑circuit
Ambient Temperature: 0°C to +40°C (operating), -25°C to +70°C (storage)
Humidity: 10%–90% non‑condensing
Dimensions (H×W×D): 210 mm × 114 mm × 50 mm
Weight: 2.2 lbs (1.0 kg)
Core Features
The DC3N-12D-00-010-AI provides independent, adjustable acceleration and deceleration times (0.5–10 seconds) for smooth, controlled motor ramping, reducing mechanical stress on loads. Its adjustable current limit (up to 200% of rated current) and IR drop compensation (0–15%) optimize torque delivery and speed regulation across varying load conditions. Built‑in protection mechanisms safeguard the drive and motor from overcurrent, overvoltage, thermal overload, and short‑circuit faults. The open‑chassis design simplifies wiring and maintenance, while tachometer feedback input enables enhanced speed accuracy for precision applications. Slide switches allow quick configuration for input voltage, motor type, and signal follower operation, ensuring flexible system integration.
Applications
The DC3N-12D-00-010-AI is ideal for light‑to‑medium duty industrial applications requiring basic, reliable DC motor speed control. Typical uses include conveyors, packaging machinery, material handling equipment, small machine tools, fans, pumps, and general‑purpose production lines. It is well‑suited for cost‑sensitive applications where open‑frame mounting, compact size, and simple operation are prioritized.
Operation and Maintenance Notes
Install the drive in a clean, dry, well‑ventilated enclosure with adequate airflow to prevent overheating. Set the input voltage slide switch correctly for 115VAC or 230VAC before applying power. Regularly inspect wiring terminals for tightness and clean the open‑frame circuit board to remove dust accumulation, which can impede heat dissipation. Avoid operation in environments with excessive moisture, corrosive gases, or conductive contaminants. Periodically check tachometer wiring and connections for wear, and verify trim pot settings to maintain consistent performance.
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