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