Unipulse F805AT-BC, Руководство по эксплуатации

Страница: 111 / 202

7.CONTROL SIGNAL (External I/O Connector)
96
7-2. Equivalent Circuit (input)
Signal input is performed by closing and opening the input terminals, namely between
the input terminal and COM. Contact devices (such as relay and switch) and non-
contact devices (such as transistor, open-collector TTL) can be used for this purpose.
7-3. Equivalent Circuit (output)
An open-collector transistor constitutes the signal output circuit.
・ Use external devices that allow more than 10mA of Ic to flow.
・
Leak current from the external device should be less than 100 μ A.
F805AT-BC
inside
Ic =
COM
transistor
open-collector TTL
(“ON” when IN is “H”)
Open OFF
Close ON
push
switch
toggle
switch
relay
contact
IN
IN
approx. 6mA
Vcc
+12V
spark arrestor
load
spark arrestor
DC power
varistor
load
AC power
Relay
Vext
Output data
Tr
0 OFF
1 ON
F805AT-BC
inside
COM
Vceo=30V(max)
Ic =120mA (max)
Use a customer supplied external power source (Vext) to drive the relay.
Do not short-circuit the load (e.g. relay coil); this may damage the
output transistor.
Connect a surge absorber or spark arrestor across the relay circuit (both
coil and contact sides), as shown in the figure, to suppress surge voltage.
Vcc
+12V