Unipulse F805AT-BC, Руководство по эксплуатации

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4.SIGNAL CONNECTION
22
4-6-2. 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.
4-6-3. 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.
Vcc
F805AT-BC
inside
Ic =
COM
transistor
+12V
open-collector TTL
(“ON” when IN is “H”)
Open OFF
Close ON
push
switch
toggle
switch
relay
contact
IN
IN
approx. 6mA
spark arrestor
load
spark arrestor
DC power
varistor
load
AC power
Relay
Vext
Output data
Tr
0 OFF
1 ON
F805AT-BC
inside
Vcc +12V
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.