Omron SYSDRIVE 3G3RV, Руководство пользователя

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Installing and Wiring Option Cards
2-
55
K K K K
Selecting the Number of PG (Encoder) Pulses
The
setting for the number of PG pulses depends on the model of PG Speed Control Card being used. Set the
correct
number for your model.
n
3G3FV-PPGA2/3G3FV-PPGB2
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.
Some
examples of PG output frequency (number of pulses) for the maximum frequency output are shown in
Table
2.31.
Note 1. The
motor speed at maximum frequency output is expressed as the sync rotation speed.
2. The
PG power supply is 12 V.
3. 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.)
Fig 2.42 3G3FV-PPGB2 Connection Example
Table 2.31 PG Pulse Selection Examples
Motor's Maximum Speed (r/min)
PG Rating
(p/rev)
PG Output Frequency for Maximum Fre-
quency Output (Hz)
1800 600 18,000
1500 800 20,000
1200 1000 20,000
900 1200 18,000
Motor
speed at maximum frequency output (r/min)
60
--------------------------------------------------------------------------------------------------------------------------
PG
rating (p/rev) ×
20,000
Hz
=
PG power supply
Capacitor for momentary
power loss
Signals