DC2-72U

About the DC2-72U

• The Reliance Electric DC2-72U is a single-phase DC motor controller.
• It is compatible with Reliance DC motors.
• It converts AC power to adjustable DC power for enhanced torque and speed control.

Power Specifications

• Reconnectable AC line power input: 115 VAC or 230 VAC.
• Output Voltage:
  • 115 VAC input produces 90 VDC.
  • 230 VAC input produces 180 VDC.
• Horsepower Output:
  • 115V operation: 1.0 HP.
  • 230V operation: 2.0 HP.

Features & Functionality

• Armature Form Factor: Improved by a full-wave, half-controlled armature voltage rectifier and included back diode.
• Field Supply: Half-wave field creates a supply usable for shunt wound DC motors.
• Operation: Unidirectional operation with a coast-to-rest stop function.
• Protection: Internal thermostat to prevent motor overload.
• User Interface: Remote start, stop, run, and jog capabilities.
• Speed Control Functions:
  • Supports both manual and automatic modes via a selector switch.
  • Manual mode: Speed adjusted by a potentiometer.
  • Automatic mode: Relies on a process control output signal.
  • Integrated via armature voltage regulation.
  • Can be adjusted using a motor-mounted DC tachometer.
  • Allows independent adjustment of current limits and separate adjustment of minimum and maximum speeds.

Enclosure & Environmental Conditions

• Encased in a NEMA Type 12 enclosure, suitable for indoor installation only.
• The casing protects against small foreign objects and minute water splashes, but not internal condensation. Proper storage is crucial.
• Ambient Operating Temperature: 0℃ to 40℃ (32℉ to 104℉).
• Safety and installation guidelines are in the corresponding series manual.