Brushless DC Gearmotors
Merkle-Korff offers our Brushless DC gearmotors with either hall only feedback or a fully integrated control board, internal to the motor. The integral control is a fully digital control with the latest in micro-processor technology on board. The motor can be mounted not only to our most robust parallel shaft gear box that we manufacture (MK’s GF gearbox) but it can also be fitted to our new line of 52 mm planetary gear heads.
Our domestically based engineering team has the expertise to customize the software to meet the various demands and requirements of virtually any application. Our brushless DC gearmotors are currently being utilized in virtually every market we serve, including the commercial food equipment, pellet stove, satellite dish and pump markets. For those applications that require a higher degree of controllability or a higher efficiency solution to meet your green initiatives, the Merkle-Korff Brushless DC product is the perfect solution.
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Features
Internal controller
- Two quadrant programmable control: current limiting, acceleration, speed regulation, velocity profiles
- Built-in quadrature encoder
- Over-current protection
- Stall condition protection
- 0 – 5 or 0 – 10 VDC speed reference voltage
- Dynamic braking and holding capability
- Input voltage polarity protection
- Electronic commutation
Motor
- Long life
- Ball bearing construction
- 8 pole rotor
- 3 phase stage – wye connection
- High energy/skewed magnets for reduced cogging
- Integral hall sensors for rotor position
Gearbox
- Sintered or needle bearings: output shaft
- Sintered powder metal gearing
- Helical first stage for low audible noise
Optional Features
- Hall only output: externally controlled
- Incremental optical encoder
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Applications
- Commercial food equipment
- Pumps
- Business equipment/automation
- Pellet stove
- Medical/laboratory
- Satellite positioning systems
- Custom solutions
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Specifications
- Input voltage: 12 to 32 Vdc
- Insulation class: F (155° C)
- Bi-directional
- Speed regulation: open or closed loop, programmable
- Velocity profile: programmable
- Acceleration: programmable
- Temperature protection: 90° C/110° C std
- Current limit: programmable
- Tachometer O/P: 2 Ch – 6PPR
- Gearing peak torque: 250 lb. in
- Speed range: 0.25 – 35 rpm
Standard gear reductions
- 1131:1
- 1044:1
- 536:1
- 495:1
- 178:1
- 165:1
Timing Diagram Sensor - Winding
Hall-effect sensors CCW phrases CW phrases HA HB HC A B C A B C 1 1 0 1 + - 0 - + 0 2 1 0 0 0 - + 0 + - 3 1 1 0 - 0 + + 0 - 4 0 1 0 - + 0 + - 0 5 0 1 1 0 + - 0 - + 6 0 0 1 + 0 - - 0 + External (hall only): lead wire color code
Board position Designation Lead color 1 motor A blue 2 motor B white 3 motor C brown 4 hall A green 5 hall B orange 6 hall C yellow 7 5UDC red 8 GND black Internal controller: lead wire color code
Board position Designation Lead color 1 digital I/O "A" gray 2 digital I/O "B" white/red 3 direction white/black 4 signal ground green 5 enable input orange 6 5VDC (output) yellow 7 input power (12-32VDC) red 8 power ground black 9 analog Input 2 violet 10 analog input 1 (Speed) blue 11 tach output "B" brown 12 tach output "A" white Diagram
Model Output power (watts) Peak torque (lb.in) "A" GF-5706B 12 150 LB.IN 3.020” GF-5719B 25 200 LB.IN 3.520” GF-5738B 45 250 LB.IN 4.270”
