Pro Bipolar Chopper Driver, P/N 10020-2,-3,-4
Specifications
| Part No. |
10020 |
| Description |
Multi-Axis Motion Control Driver |
| Driver type |
bipolar chopper |
| Number of Drivers |
2, 3, or 4, depending on purchase |
| Computer protection |
Parallel port interface opto-isolated |
| Motor protection |
Idle motor current reduction |
| Driver protection |
main fuse |
| Step Mode |
Half |
| Dimensions |
10" x 7" x 4" |
| Weight |
10 lbs |
| Power Supply |
120 Watt |
| Power In |
110 VAC or 220 VAC (flip switch) |
| Fan |
3" DC |
| Input connector |
25 pin female |
| Output |
Four 8-pin round DIN receptacles, 3.5A each |
| Switch |
On/Off toggle, power-on light |
| Case |
Brushed Aluminum bottom, black textured steel top. |
|
Front View
Back View
Inside View
|
The pro bipolar chopper motion controller (P/N 10020) has a 120 Watt power
supply and can provide up to 3.5 amps of power at 24 volts to each of up
to 4 step motors. Current output is set with a sense resistor at
the factory for 2 amps to work with our 144 and 250 oz-in motors but can
be changed if needed. The box measures 11" x 7" x 4", has four
rubber feet, and weighs 10 pounds. The front panel has an on/off
power switch, power-on light, and four 8-Pin circular DIN receptacles for
the step motor connectors. The back panel has a 25 pin male connector,
a power connector and a 9-pin female connector. The 25 pin connector
plugs into your PC's printer port via a 25 pin DB25 M/F cable. The
9 pin connector provides easy access to pins 18-25 (gnd), 13, 12, 11, 10,
1, 17, 16, and 14. That connector was put into the circuit for EasyCAM
Pro software features. The only one that is supported by MyT'Mill
software is pin 10, emergency stop. Connect a switch between it and ground
and MyT'Mill will stop the motors if the switch is closed and if Limit
Switch Checking is checked under Edit|Preferences.
Bipolar drivers are more powerful than unipolar drivers because more
of the stepper motor windings are engaged at any one time. Bipolar
circuit designs change the polarity of the stepper winding with each step.
Chopper-type drivers are more powerful and faster because they use higher
voltages to increase the current flowing through the stepper motor windings
up to their rated levels more quickly. Then the circuit "chops" the
voltage to maintain that current level. A bipolar chopper driver
is a complicated circuit that combines these two features. The result
is a torque vs speed curve that maintains higher torque (compared to the
unipolar drive) as speed increases. While the torque at very
low speeds is comparable, the bipolar driver maintains it better as the
speed increases.
The four blue boxes shown on the inside view are the actual drivers
themselves. The modular design allows for easy expansion to 3 or
4 drivers at a later date or for easy replacement in the unlikely event
a problem develops. Each driver just plugs in to the circuit board
and is held down by a long screw. Each driver has an "idle motor
current reduction" feature which senses motor motion and reduces the current
by half when not spinning. This saves energy and the motors don't
get as hot, increasing their life span.
[Home][Testimonials][Products][Example
Parts][Customer Support][Contact
Us]