Reliance Electric™ Drives
Legacy AC and DC Drives
DC2
DC2 Variable Speed Drives combine application flexibility, compact size and reliability into an affordable adjustable speed package that delivers the performance you need for a wide range of industrial applications.
Key Attributes
- Available in either open chassis, totally enclosed NEMA Type 12 or NEMA 4X
- Operates from either local or remote operator controls for added mounting flexibility
- All circuitry — sequencing, regulator and terminals — packaged on a single, accessible surface mount design printed circuit board
- Jumper reconnections adapt standard controllers to match:
- Line voltage, either 115 or 230 VAC, 50 or 60 Hz.
- Desired feedback, either armature voltage or motor driven DC tachometer for non-reversing models only.
- Tachometer requirements: 7 VDC OR 20.8 VDC or 20.8 VDC per 1000 RPM designs
- "S" curve or linear acceleration
- Zero speed operation
- Separately adjustable maximum and minimum speeds set speed limits
- Adjustable current limit protects machinery, wiring and drive
- Adjustable IR drop compensation improves speed regulation when using armature voltage feedback
- Adjustable acceleration and deceleration rates for smooth starts, stops and speed changes
- 20:1 constant torque speed range
- 30:1 constant torque speed range with tachometer feedback
- Full-wave, half-control power conversion with back diode for efficient power conversion, smooth armature current waveforms and cool motor operation over wide operating speed ranges
- Built-in half-wave field supply for operation of wound field motors
- Built-in surge suppressor
- Relay in control circuit prevents automatic restarting after power outage
- Overload protection provided by motor thermostat
- NEMA 4 Controls are F.D.A./U.S.D.A. approved