External I/O Connection; External Output Connection; External Input Connection - Unipulse F370 Operation Manual

3.CONNECTION

3-4. External I/O Connection

3-4-1. External Output Connection

The external output circuit is operated through an open collector. A3 COM1 is the
common terminal. The open collector output capacity is 30mA and the withstand voltage
is up to 30V.
・
Equivalent circuit
● Output Transistor Status
Output Data

3-4-2. External Input Connection

A signal is inputted to the signal input circuit by short-circuiting or opening the input
terminal and the COM2 terminal. Short-circuiting is effected by means of a contact (such
as a relay or a switch) or a noncontact (such as a transistor or an open-collector TTL).
+12V
12
F370 Inside
A3
COM1
Tr
0 OFF
1 ON
Open → OFF
F370 Inside
Short → ON
Push
Switch
A6
COM2
- The external element is required to withstand Ic=10mA.
- Leakage from the external element is required to be
100μA or below.
Vext
Spark Killer
Relay
Varistor
Supply an external power source for a relay drive
power source (Vext).
Toggle
Relay
Switch
DC
Power
Supply
Load
Spark Killer
AC
Power
Supply
Load
TTL Open Collector
(ON when IN is HI)
IN
IN