Autonics BF4 series - Setting as Max. Sensitivity; Prohibition of External Sensitivity Setting; Self-Diagnosis Output Function

B-38
BF4 Series
Setting as max. sensitivity (common)
①
Set the mode setting switch to [
SET
].
②
If there is no sensing target,
-
Light ON
: Press the [
ON
→
OFF
] button
-
Dark ON
: Press the [
OFF
→
ON
] button
③ Set
the mode selection switch to [
LOCK
] mode.
※
External sensitivity setting
-
Light ON
(From above
③
)
External sensitivity setting
ON
input (High→Low→High)
External sensitivity setting
OFF
input (High→Low→High)
-
Dark ON Mode
(From above
③
)
External sensitivity setting
OFF
input
(High→Low→High)
External sensitivity setting
ON
input (High→Low→High)
< Application >
● To extend sensing distance (diffuse reective type):
If ber optic sensor is used in place where there are
targets with high reectivity and low reectivity, it is able
to get stable detection by adjusting max. sensitivity.
● Used at bad environment (through-beam type):
If ber optic sensor is used in place where there is lots of
dust or moisture, it might cause malfunction.
It can perform the stable detection by using max.
sensitivity.
External input sensitivity setting type
[BF4 -R]
External input sensitivity setting type, BF4 -R can adjust
the sensitivity with input signal lines without the mode
setting switch.
●
Light ON
-
ON input of remote sensitivity setting (SW1):
Turns ON the SW1 and then turn OFF instead of
③
state
of adjustment by the sensitivity setting button.
-
OFF input of remote sensitivity setting (
SW2
):
Turns on the SW2 and then turn OFF instead of
⑤
state
of adjustment by the sensitivity setting button.
●
Dark ON
-
OFF input of remote sensitivity setting (SW2):
Turns on the SW2 and then turn OFF instead of
③
state
of adjustment by the sensitivity setting button.
-
ON input of remote sensitivity setting (
SW1
):
Turns on the SW1 and then turn OFF instead of
⑤
state
of adjustment by the sensitivity setting button.
Power
supply
Remote
sensitivity
setting
ON input
Remote
sensitivity
setting
OFF input
Self-
diagnosis
output
(Answer
back
function)
Sensing
output
ON
OFF
High
(OFF)
Low
(ON)
T1 T2
High
(OFF)
Low
(ON)
ON
OFF
T5
T2
T3
※
T3
※
T4
T4
Detectable
<External sensitivity setting input signal condition>
※
Input impedance:10kΩ
State Signal condition
High 4.5-30VDC or Open
Low 0-1VDC
※
During period T3 (approx. 300ms), do not change the
received light value by moving the object, etc.
●
T1≥1,000ms : after power turns ON, it can be set after 1sec.
●
T2≥5ms : ON/OFF input time of remote sensitivity setting
must be min. 5ms
●
T3
≒
300ms : when ON/OFF input of remote sensitivity
setting is applied, self-diagnosis output turns ON after
300ms)
●
T4
≒
40ms : ON time of self-diagnosis output
●
T5≥500ms : when ON input of remote sensitivity setting
is applied, apply OFF input of remote sensitivity setting
after 500ms
<Time Chart: Light ON mode >
Self-diagnosis output (answer back)
function [BF4 -R]
When ON or OFF input of remote sensitivity setting is
applied, after 300ms, self-diagnosis output turns on for
40ms and then the sensor keeps normal sensing state.
(Note: Time chart)
※
Self-diagnosis output does not turn on if there is no
difference of sensitivity between ON input and OFF input
and stable sensing is not executed, but stable sensing
operates after 340ms.
Prohibition of inputting External
sensitivity setting [BF4 -R]
Even though mode switch is at Lock position, it is able to
input external sensitivity setting when Switch 1 and Switch
2 are ON. Therefore please install Switch 3 in order to
prevent from malfunction as below.
※
SW3 - OFF: Disable to set external sensitivity
※
SW3 - ON: Enable to set external sensitivity
Switch for prohibiting sensitivity setting
(Pink)ON input of remote sensitivity setting
(Orange)OFF input of remote
sensitivity setting
(Blue)0V
(Brown) +V
(Black) Control output
(White) Self-diagnosis output
S
/
W3
S
/
W2 S
/
W1
(pink) ON input of remote sensitivity setting
(orange) OFF input of remote
sensitivity setting
(blue) 0V
(black) Control output
(white) Self-diagnosis output
S/W2 S/W1
(brown) +V