Autonics BF4G Руководство - Страница 7
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Timer (OFF Delay) Function
[BF4R/BF4G/BF4RP/BF4GP/BF4 -R]
Standard type and External input sensitivity setting type
both contain the built-in OFF Delay timer, approx. 40ms.
The timer works when the timer selection switch is set to
[OFD].
The output turns off after remaining for additional 40ms at
OFF position of the sensing output. It is useful when the
response time of the connected device is slow or when the
sensing signal from a tiny object is too short.
<Time Chart>
Sensing
Sensing
state
Non-
Output
Sensing
operation
ON
Light
OFF
ON
ON
Dark
OFF
ON
T
ON
Light
OFF
ON
T
ON
Dark
OFF
ON
External Synchronization Input
Function
[BF4R -E]
By using external synchronization function, the time
for making sensing can be specified by external
synchronization. (trigger synchronization and gate
synchronization)
Trigger synchronization
ON
Sensing
OFF
※ 1
signal
External
T
synchroni-
High
zation
Low
input
Approx. 40ms
ON
Control
output
OFF
※ Control output is fixed
as 40ms.
External
synchroni-
: TRIG
zation
selection
switch
※1: Right before transfer detection signal of the sensor as
control output.
※ T≥0.5ms (using interference prevention function: T≥0.7ms)
<Input signal condition for External synchronization>
State
Signal condition
High
4.5-30VDC or Open
Low
0-1VDC
T≒40㎳
Timer
selection
switch
T
T
Gate synchronization
ON
OFF
T
High
Low
ON
OFF
: GATE
Fiber Optic Amplifier
Stop Transmission Function
-Operation Test
[BF4 -E]
This function is available under light ON state only and it is
for checking normal state of the sensor.
(orange) Input of stop transmission
(blue) 0V
[If input of stop transmission is at High or Open state,
light is transmitted.]
(orange) Input of stop transmission
[If input of stop transmission is at Low, light is transmitted.]
①
High
Input of stop
(OFF)
transmission
Low
(ON)
Sensing output
ON
(If it is in ON
OFF
state when light
is not received)
※ ①: Transmission area, ②: Stop transmission area
※ 1: If transmission is stopped, control output must turn
on, but if control output does not turn on, it seems that
sensor has some problems.
※ T≥0.5ms
(when using interference prevention function T≥0.7ms)
<Input signal condition for Stop transmission>
State
Signal condition
High
4.5-30VDC or Open
Low
0-1VDC
High or
Open
Low
(blue) 0V
①
①
①
②
②
②
T
T
T
※ 1
Normal
Abnormal
(A)
Photoelectric
Sensors
(B)
Fiber
Optic
Sensors
(C)
Door/Area
Sensors
(D)
Proximity
Sensors
(E)
Pressure
Sensors
(F)
Rotary
Encoders
(G)
Connectors/
Connector Cables/
Sensor Distribution
Boxes/ Sockets
(H)
Temperature
Controllers
(I)
SSRs / Power
Controllers
(J)
Counters
(K)
Timers
(L)
Panel
Meters
(M)
Tacho /
Speed / Pulse
Meters
(N)
Display
Units
(O)
Sensor
Controllers
(P)
Switching
Mode Power
Supplies
(Q)
Stepper Motors
& Drivers
& Controllers
(R)
Graphic/
Logic
Panels
(S)
Field
Network
Devices
(T)
Software
B-39