PVA PVA2000 - Appendix D - Open Loop Velocity Settings; Maximum Velocity Settings; Table 14 - PVA250 Velocity Limits; Table 15 - PVA750, PVA2000 C Velocity Limits

Operation and Maintenance Manual Rev M(ii) 4/03
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Appendix D – Open Loop Velocity Settings
Maximum Velocity settings
Due to the “open loop” nature of the stepper driven systems, we must set a maximum speed for each axis
that must not be exceeded. Unlike our “closed loop” servo systems which generate a position error if the
user attempts to run the motors faster than they are capable of moving, an “open loop” loop system will
simply lose position and keep going. The maximum speeds for each system are listed below:
Table 14 – PVA250™ Velocity Limits
PVA250™
Axis
Max User Speed Max Burn in speed Max Acceleration Max Deceleration
X-Axis 60000 cnts/sec 66000 cnts/sec 300000 cnts/sec
2
300000 cnts/sec
2
Y-Axis 60000 cnts/sec 66000 cnts/sec 300000 cnts/sec
2
300000 cnts/sec
2
Z-Axis 6000 cnts/sec 6500 cnts/sec 30000 cnts/sec
2
30000 cnts/sec
2
Table 15 – PVA750™, PVA2000C™ Velocity Limits
PVA750™, PVA2000C™
Axis
Max User Speed Max Burn in speed Max Acceleration Max Deceleration
X-Axis 125000 cnts/sec 134000 cnts/sec 500000 cnts/sec
2
500000 cnts/sec
2
Y-Axis 125000 cnts/sec 134000 cnts/sec 500000 cnts/sec
2
500000 cnts/sec
2
Z-Axis 6000 cnts/sec 6500 cnts/sec 50000 cnts/sec
2
50000 cnts/sec
2