18.2.8 I/O equivalent circuits
Input section
Output section
OUTPUT
V
CE
= 30 V DC
I
C
= 20 mA DC
COM. 3
COM. 3
INPUT
430
0.
022U
+12V
2.2K
18.2.9
Timing chart
The following chart shows the BCD output timing.
Example 1: Normal
ON
ON
ON
ON
ON
ON
ON
ON
DATA
POL.
P. C.
100 times/s: approx. 10 ms
20 times/s: approx. 50 ms
4 times/s: approx. 250 ms
100 times/s: approx. 5 ms
20 times/s: approx. 25 ms
4 times/s: approx. 125 ms
Note:
When P.C., DATA and POL. are all output, the output transistor switch turns ON
(negative logic).
Example 2: Data overload status
ON
ON
ON
ON
DATA
POL.
P.C.
OVER
ON
ON
ON
Note:
When P.C., DATA and POL. are all output, the output transistor switch turns ON
(negative logic). For all DATA, the output transistor turns OFF (positive logic) when OVER
is output. (However, POL. is normally OFF for [OL] and ON for [–OL]).
Weight indicator CSD-903
18 Options
EN-172
Minebea Intec
Summary of Contents for CSD-903
Page 243: ......
