YASKAWA VARISPEED-616G5, Инструкция по эксплуатации

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3.7 Installing and Wiring PG Speed Control Cards
3 - 33
3.7.5 Selecting the Number of PG (Encoder) Pulses
J
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
)
60
×
PG
rating (
p
∕
rev
)
=
20, 000 Hz
Some examples of PG output frequency (number of pulses) for the maximum frequency output are shown
in Table 3.17 .
Table
3.17
PG Pulse Selection Examples
Motor’s Maximum Speed (r/min) PG Rating
(p/rev)
PG Output Frequency for Maximum
Frequency Output (Hz)
1800 600 18
,
000
1500 800 20
,
000
1200 1000 20,000
900 1200 18
,
000
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.)
PG power supply
Capacitor for power mo-
mentary power loss
Signals
Fig
3.33
PG-B2 Connection Example
J
PG-D2/PG-X2
There are 5 V and 12 V PG power supplies.
Check the PG power supply specifications before connecting.
The maximum response frequency is 300 kHz.
Use the following equation to computer the output frequency of the PG (fPG).
f
PG
(
Hz
)
=
Motor speed at maximum frequency output (
r
∕
min
)
60
×
PG
rating (
p
∕
rev
)
A separate power supply is required if the PG power supply capacity is greater than 200 mA. (If momen-
tary power loss must be handled, use a backup capacitor or other method
.)
PG power
0 V 12V
Capacitor for momen-
tary power loss
Fig
3.34
PG-X2 Connection Example (for 12 V PG power supply)
3