National Instruments Stepper Machine NI MID 760X User Manual

Stepper and Servo Motor Drives  
NI MID-7604, NI MID-7602  
• High-efficiency, bipolar chopper  
stepper drives  
• User-selectable microstepping  
and peak current  
• Integrated power supply  
• CE approved and UL recognized  
NI MID-7654, NI MID-7652  
• High-efficiency servo amplifiers  
• User-selectable peak current  
and continuous current  
• Integrated power supply  
• CE approved and UL recognized  
Overview and Applications  
These compact, well integrated drives incorporate per-axis  
The National Instruments MID-760x integrated stepper motor amplifiers, motor-power DC bus supplies, low-voltage motion I/O  
power drives and MID-765x integrated DC-brush servo motor supplies, and pluggable screw terminal connectivity in a single  
power drives offer reliable, easy-to-connect drive solutions for rugged metal enclosure. This optimized system wiring design  
National Instruments motion controllers. The NI MID-760x simplifies motion component selection.  
provides stepper motor control from the NI 7330, 7340, and 7350  
controllers. The MID-7650 provides DC-brush servo motor control High-Efficiency Architecture  
from NI 7340 and 7350 controllers. Because the MID-760x and the The MID-760x power drives incorporate an efficient bipolar chopper  
MID 7650 have all the required motion drive and motion I/O signals, architecture that converts step and direction control signals into  
they offer all the features of a universal motion interface wiring winding currents for 2-phase stepper motors. The MID-765x power  
module with the enhancements of a powered motor drive in a single drives incorporate an efficient servo amplifier architecture that  
product. The NI MID power drives connect to motion controller converts analog control signals into winding currents for DC-brush  
boards through a single-shielded cable that transfers all motor motors. The pulse width modulation driver technology in the  
commands, as well as motion I/O control and feedback signals.  
MID-765x accurately controls motor winding current, while  
The MID-7604 and MID-7602 are 4-axis and 2-axis stepper motor reducing motor heating, lowering ripple current, and improving  
drive units, respectively. The MID-7654 and MID-7652 are 4-axis overall motor performance. Active fan cooling provides optimal  
and 2-axis DC-brush servo motor drive units, respectively.  
motion power drive operation.  
Compact  
Front Panel  
Front Panel  
NI 7350  
NI 7340  
Motor Drive  
(A)  
0.2 to 1.4  
0.2 to 1.4  
0.8 to 5 continous  
10 peak  
Current/Axis  
Diagnostic LEDs  
Enclosure and  
Microstepping  
Selectable  
Peak Current  
Selectable  
Axes  
Model  
Stepper  
Servo  
NI 7330  
(V)  
24  
24  
48  
MID-7604  
MID-7602  
MID-7654  
4
2
4
MID-7652  
48  
0.8 to 5 continous  
10 peak  
2
Figure 1. Stepper and Servo Motor Drive Features  
642 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 [email protected] • ni.com  
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