Getting Started with NI 9512 and P7000 Drives
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© National Instruments
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13
Step Resolution
Table 6 lists the step resolution switch settings.
Load Inertia
The P7000 series stepper drives eliminate the resonance typical of step motors with high-speed,
digital processing of motor electrical activity. To use this feature, you must set three switches
based on the load-to-rotor inertia ratio. These switches select the gain parameter the drive uses
to stabilize the motor. You can calculate the load inertia by hand or by using the Motioneering
Table 6.
Step Resolution DIP Switch Settings
Resolution
S2–2
S2–3
S2–4
200
(Full Step)
ON
ON
ON
400
(Half Step)
OFF
ON
ON
5,000
ON
OFF
ON
10,000
OFF
OFF
ON
18,000
ON
ON
OFF
25,000
OFF
OFF
OFF
25,400
OFF
ON
OFF
50,000
ON
OFF
OFF
2
O
N
3
O
N
4
O
N
2
O
F
F
3
O
N
4
O
N
2
O
N
3
O
F
F
4
O
N
2
O
F
F
3
O
F
F
4
O
N
2
O
N
3
O
N
4
O
F
F
2
O
F
F
3
O
F
F
4
O
F
F
2
O
F
F
3
O
N
4
O
F
F
2
O
N
3
O
F
F
4
O
F
F
