Selecting The Number Of; Selection - Saftronics VG520P4 Technical Manual

3.7.5 Selecting the Number of PG Pulses
§
PG-A2/PG-B2
The maximum response frequency is 32,767 Hz. Use a PG that outputs a maximum frequency of approximately 20
kHz for the rotational speed of the motor.
Motor speed at maximum frequency output (r/min)
Some examples of PG output frequency (number of pulses) for the maximum frequency output are shown in Table
3.17.
Motor's Maximum Speed (r/min)
NOTE: 1.
2.
3.
§
PG-D2/PG-X2
The maximum response frequency is 300 kHz.
Use the following equation to compute the output frequency of the PG (fPG):
f
PG
A separate power supply is required if the PG power supply capacity is greater than 200 mA. (If momentary power
loss must be handled, use a backup capacitor or other method.)
Firmware – S1043
Revision: 2 (9/98)
60
Table 3.17
1800
1500
1200
900
The motor speed at maximum frequency output is expressed as the sync rotation speed.
The PG power supply is 12 V.
A separate power supply is required if the PG power supply capacity is greater than 200 mA.
momentary power loss must be handled, use a backup capacitor or other method.)
Figure 3.33
Motor speed at maximum frequency output (r/min)
(
Hz) =
X PG rating (p/rev) = 20,000 Hz
PG Pulse Selection Examples
PG Rating (p/rev)
600
800
1000
1200
PG-B2 Connection Example
X PG rating (p/rev)
60
51
Chapter 3: Wiring
PG Output Frequency for Maximum
Frequency Output (Hz)
18,000
20,000
20,000
18,000
© Saftronics, Inc.
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