Appendix A Specifications - National Instruments Motion Control 7334 User Manual

Appendix A Specifications
Stepper Performance
7344/7334 Hardware User Manual
Feedforward (Aff, Vff) gains ..........0 to 32,767
Velocity feedback (Kv) gain ...........0 to 32,767
Servo command analog outputs
Voltage range...................................±10 V
Resolution........................................16 bits (0.000305 V/ LSB)
Programmable torque (velocity) limits
Positive limit ............................±10 V (–32,768 to +32,767)
Negative limit...........................±10 V (–32,768 to +32,767)
Programmable offset .......................±10 V (–32,768 to +32,767)
Trajectory update rate range ...................62.5 to 500 µs/sample
Max update rate ...............................62.5 µs/axis
4-axis update rate.............................250 µs total
Multi-axis synchronization .....................< 1 update sample
Position accuracy
Open-loop stepper ...........................1 full, half, or microstep
Encoder feedback ............................±1 quadrature count
Analog feedback..............................±1 LSB
Double-buffered trajectory parameters
Position range ..................................±2
Max relative move size....................±2
Velocity range .................................1 to 4,000,000 steps/s
RPM range.......................................10
Acceleration/deceleration ................4,000 to 128,000,000 steps/s
RPS/s range .....................................10
S-curve time range...........................1 to 32,767 samples
Following error range ......................0 to 32,767 counts
Gear ratio .........................................±32,767:1 to 1:32,767
Stepper outputs
Max pulse rate .................................4 MHz (full, half, and microstep)
Min pulse width...............................120 ns at 4 MHz
Step output mode.............................Step and direction or CW/CCW
31
31
–5
–1
A-2
steps
steps
6
to 10 revolutions/minute
8 2
to 10 revolutions/s
2
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