44
TOS7200
SIGNAL I/O Connector
Internal configuration
Common of the input signal control block is connected to common of the output signal
control block.
Because the input signal circuit is pulled up to +12 V, opening the input terminal
effectively creates a high-level input.
Example of use
Input signal
Internal Configuration of the SIGNAL I/O Connector
•
•
•
•
•
•
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
Use a make contact such as a relay or
switch to set the input terminal to the Low
level.
Example of Control Using a Make Contact
COM
ic
Use a logic element such as a transistor in
place of a switch in the above example.
Consideration should be given to pulling
up the transistor’s collector current, ic, by
5 mA or more.
Example of Control Using a Logic Element
