−
40
−
Sequence output circuit
・This comprises a Darlington am
plifier with an open collector. This
is connected to a relay or photo
coupler.
・There exists a collector-to-emitter
voltage VCE(SAT) of approx. 1V
at transistor ON, because of
Darlington connection of the out
put transistor. Note that normal
TTLIC can't be directly connected
since this does not meet VIL re
quirement.
・This circuit has an independent
emitter connection, or a emitter
connection that is commonly used
as the minus (-) terminal (COM-)
of the control power.
・The maximum rating is 30V,
50mA.
SO1 SO2
Install as per the fig. Shows
without fail
Calculate the value of R using the formula
below so as the primary current of the photo
coupler become
approx. 10mA.
PO1 Line Driver (Differential
Output) Output
・Provides differential outputs of
encoder signals (A, B and Z
phases) that come from the sca-
lar.
・Receive these signals with a line
receivers. In this case, install a
resistor of approx. 330Ω between
the inputs.
・These outputs are non-insulated
signals.
Connect the signal grounds be-
tween the controller and driver.
System Confguration and Wiring
Interface Circuit (Output Circuit)
R =
V
DC
− 2.5
10
[K Ω]
V
DC
12~24V
SO1
+
ALM
+
or other signal
ALM
-
or other signal
COM
-
41
ZSP, TLC
-
SO2
AM26LS32
or equivalent
AM26LS31
or equivalent
A
B
Z
22
21
OA+
OA-
OZ+
OZ-
OB+
OB-
48
23
25
GND
24
49
shows a pair of twisted
wires.
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