10
5 Selecting PG
The maximum frequency of PG output pulse that can be detected is 300kHz.
Find output frequency, f
PG
(Hz), according to the following formula.
f
PG
(Hz) =
Motor rotation speed
(r∕min)
at max. frequency output
60
×
PG constant
(p∕rev)
If the PG power capacity is 200mA or greater, provide a separate power supply.
(If momentary power loss ride-through function is necessary, provide backup
capacitor or take other necessary measures.)
PG power
supply
*
Backup capacitor momentary
power loss recovery
Signal
*
0V12V
Fig.
6 Connection example with PG when using separate power supply
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