Baldor-Reliance
BC141

A chassis mount, adjustable speed DC drive for motors between 1/100 to 3/4 hp. The speed control is designed for 90 VDC PM and shunt motors. Speed range can be 50:1 along with load regulation involving 1%.

Baldor-Reliance DC Motor Control, 115 VAC, 0 to 90 VDC, 16 A, 1-1/2 hp, 1 ph, 3-41/64 in Width, 1-1/4 in Depth, 4.3 in Height, Chassis Mounting

• The control, with surface mount construction, offers the user the ultimate in reliability and performance at an affordable price
• The controls contain a unique patented super-fast DirectFed™ current limit circuit that protects the SCR power bridge against direct shorts1
• The reliability of the control is further enhanced with the use of high-surge, 25 A SCRs, and AC line and armature fusing2,3
• The control is designed with exclusive plug-in horsepower Resistor® 3, which eliminates the need for recalibrating IR comp and current limit when the control is used on various horsepower motors
• In addition, the rating of the control can be extended to 1.5 hp for controls with 90 VDC output and 3 hp for controls with 180 VDC output, by the use of an auxiliary heat sink 4
• Selectable armature or tach feedback and adjustment trimpots for minimum speed, maximum speed, current limit, IR compensation, and linear acceleration and deceleration
• The control includes auto-Inhibit®, which eliminates surging during rapid AC line switching
• pulse transformer triggering, which provides cogless operation at low speed
• Superior noise rejection circuitry, which eliminates false starts and blown SCRs
• Enable (normally closed) and Inhibit (normally open) functions provide electronic switching of control output
• The output voltage of the control is a linear function of the main speed potentiometer setting
• In addition, the control can be used in a voltage following mode by supplying an isolated analog input signal to terminals P2 (+) and P1 (-)
• The control is supplied with a factory installed 25 A at AC line fuse, a 5 kOhm main speed potentiometer and QD terminals
• 12 A (AC), 8 A (DC) maximum line current rating without auxiliary heat sink
• 3/4 in hp power rating without auxiliary heat sink

• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Baldor_Reliance_3AUA0000013872_Catalog.pdf
• Instruction/Ins... https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Baldor_Reliance_BC142_6_Installation_Sheet.pdf