Kikusui TOS9200, Operation Manual

Page: 122 / 172

4-6 Using Terminals and Connectors TOS9200/9201
• If U FAIL and L FAIL are turned on simultaneously, CONTACT FAIL is meant.
• It is impossible to directly control the input signal using a logic IC such as HC.
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Internal conf iguration
The same common line is used for the input signal circuit and the output signal cir -
cuit.
The input signal circuit is pulled up to +12 V . Therefore, opening the input terminal
is equi v alent to inputting a high-le v el signal.
Fig.4-4 Inter nal con fi gur ation of the SIGNAL I/O b loc k
4.2.2 Example
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Input signal
Contr ol at a make-contact
Using the mak e-contact of a relay or switch, set the input
le v el to LO W .
Contr ol using a logic elements
Instead of the switch described abo v e, use a logic element
such as a transistor .
F or the transistor’ s collector current ic, allo w at least 5 mA.
NOTE
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Output
signal
controller
Input
signal
controller
COM
Output signal 1
Output signal 2
Input signal 1
Input signal 2
+15 V
+15 V
COM
S1
COM
ic