Unipulse F156, Operation Manual, Page: 19 / 160

2.CONNECTION
10
2-4. External Input/Output (Amphenol Connector) Connection
The adaptable connector (plug) is DDK-manufactured 57-30140 (included) or its equivalent.
Connect referring to the internal circuit diagram shown below.
For input
The signal input/output circuit inputs signals by short-circuiting and opening the input and
COM terminals.
Short circuits are made by contact (relay, switch, etc.) or noncontact (transistor, TTL open
collector output, etc.)
For output
The signal output circuit outputs signals by means of a transistor open collector.
COM
push
switch
toggle
switch
relay
+5V
TTL open-collecter
F156
IN
IN
Open OFF
Short ON
Ic = 6mA
inside
transistor
approx.
・ Use external elements which withstand Ic=10mA.
・ Leakage of external elements must be within 100 μ A.
Vcc
(ON when IN is HI )
COM
spark killer
load
spark killer
DC Power
varistor
load
AC Power
relay
Vext
Output data Tr
0 OFF
1 ON
F156
inside
Vceo=30v (max)
Ic=50mA (max)
・
Use external power source for driving relay (vext) .
・
Do not short-circuit the load,such as a coil of relay ,that will break the
output transistor.
・
Connect a surge absorber or a spark killer to the relay circuit as shown
in the draft so that to reduce noise trouble and extend the life of relay.
VCC +5V