About the DC2-74U
The DC2-74U Reliance Variable Speed controller is a single-phase DC motor controller. AX Control has many of these units available in our inventory. DC2 controllers are compatible with a wide variety of Reliance DC motors and convert AC mains power to adjustable DC for better speed and torque control. This unit can be used with 115 V or 230 V inputs. At 115 VAC the unit will produce 1 HP 90 VDC. At 230 VAC it will produce 2 HP 180 VDC.
The DC2-74U offers several options that enhance the unit’s functionality. Improved armature form factor can be attributed to the unit’s full-wave, half-controlled armature voltage rectifier and associated back diode. This half-wave field should make this unit compatible with most shunt wound DC motors, but check your motor manual to ensure compatibility. The DC2-74U is a unidirectional controller with coast-to-rest stop, capable of remote run, jog, start, and stop.
The DC2-74U includes both torque and process control. It is built within a NEMA 12 enclosure. It should be used in locations where humidity remains between 5 to 95%, non-condensing, in temperatures between 32 to 104 degrees Fahrenheit. Fast, extreme swings in temperature may cause condensation to form that can damage the controller.
Refer to original Reliance manuals and other documentation for additional details about this unit. The DC2-74U is a high-voltage component, so safety and handling procedures should be read and understood before unboxing your part. This step is for your safety, as well as to ensure the continued longevity of your equipment purchase.
