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
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.
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.
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.
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.
