The NEMA 34 stepper motor is a stepper motor with a 3.4 x 3.4 inch (86 x 86 mm) panel.
What is NEMA 34 Stepper Motor
NEMA 34 is a high torque hybrid bipolar stepper motor with a 3.4 x 3.4 inch panel. Hybrid stepper motors have a combination of variable reluctance stepper motors and permanent magnet stepper motors. The step angle of the motor is 1.8 degrees, which means that each step will cover 1.8 ° with 200 steps. The NEMA 34 is a 2-phase motor with a 4-wire system. Compatible controllers for this motor are CW230, CW250 and CW860.
NEMA 34 datasheet
NEMA 34 Pinout &Configuration
NEMA 34 has four terminals, as shown in the table.
|1||Wire 1||Red||This motor has four wires terminated with bare leads: Red and Green connected to one coil; Yellow and Blue connected to other.|
NEMA 34 Features&Specification
- Voltage Rating: 3.0V
- Current Rating: 4.0 A
- Holding Torque: 42 Kg-cm
- Step Angle: 1.8 deg.
- Steps Per Revolution: 200
- No. of Phases: 2
- Motor Length: 118 mm
- Shaft Length : 32mm
- No. of Leads: 4
- Inductance Per Phase: 8.5 mH
NEMA 34 Equivalent stepper motors
- The other stepper motors are: Nema 14, Nema 17, Nema23 , 28BYJ-48 Stepper Motor
How does a NEMA 34 work?
As mentioned above this stepper motor draws high current so instead of controlling it directly, use an appropriately powerful stepper motor drivers like cw230. Wiring diagram for NEMA 34 Stepper motor is given below:
As shown in wiring diagram there are four wires of different colours i.e. Red, Green, Yellow and Blue. These wires are connected to two different coils. Red and Green connected to one coil while Yellow and Blue are connected to other.
To rotate the motor coils are energized in a logical sequence. To rotate the motor in anticlockwise motion of the rotor the phases are energized in the following sequence +A, +B, -A, -B, +B, +A and for the clockwise rotation, the sequence is +A, -B, +B, +A……..
NEMA 34 Applications
- CNC machines
- Precise control machines
- 3D printer/prototyping machines (e.g. RepRap)
- Laser cutters
- Pick and place machines
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