TOS93 Series User’s Manual 237
External Control | SIGNAL I/O Connector
Input signal usage example
Using a make contact to control input
Use a make contact, such as a relay or switch, to set the input terminal to low level.
Using a logic element to control input
Use a logic element, such as a transistor, in place of the make contact. Design the circuit so that a
transistor collector current (ic) of 5 mA or greater flows.
Output signal usage example
Driving a relay
Use the output signal to drive a relay. To improve the safety of the circuit, we recommend that you insert a
protection fuse or connect a diode.
Obtaining a low-level digital signal
Use the output signal to obtain a low-level digital signal.
A
Low level during
signal generation