LA Series Linear Actuator Manual
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Connection through opto-isolator
This is useful when the extension distance is less than 10m.
(1)Opto-Isolator: TLP550 (Maximum: around 50kHz) for an example
(2)Set the pull-up resistance (R
L
) with the following equation so that I
OL
is 10
～
20mA.
V
CC1
－
V
F
I
OL
=
(A)
V
F
: Input forward voltage for photo isolator (approximately 1V to 1.6V)
(3)Set the filter constant (R
1
, C
1
) so that the cut-off frequency (fc) is more than 2.8 times of the maximum signal
pulse frequency.
１
fc =
(Hz)
(4)Shield line should be connected to
receiver ground (GND
1
) or metal flame.
(5)If noise circumstance is good, usual
shield cable may usable. However twist shield cable
is recommended.
R
L
2
C
1
R
L
C
1
≦
1000
pF
