B-34
BF4 Series
To set as max. sensitivity(Common)
① Execute the general sensitivity setting.
②
Set the mode selection switch to [SET] mode.
③
If there is no sensing target,
- Light ON: Press the [ON → OFF] button
- Dark ON: Press the [OFF → ON] button
④ 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 by the diffuse reective type:
If ber optic sensor is used in place where there are
targets with high reectivity and low reectivity, it is able
to get stable detection by adjusting max. sensitivity.
● When it is used as transmitted beam type at bad
environment :
If ber optic sensor is used in place where there is lots of
dust or moisture, it might cause malfunction.
Please max. sensitivity then it can perform stable
detection.
Remote sensitivity adjustment[BF4R(G)-R]
BF4R-R/BF4G-R type can adjust the sensitivity with input
signal lines regardless of the mode selection switch as
following diagram ;
①
Adjustment at Light ON
● ON input of remote sensitivity setting(SW1) :
SW1 turns on and then turns off instead of
③
state of
adjustment by the sensitivity setting button.
● OFF input of remote sensitivity setting(
SW2
) :
SW2 turns on and then turns off instead of
⑤
state of
adjustment by the sensitivity setting button.
②
Adjustment at Dark ON
● OFF input of remote sensitivity setting(SW2) :
SW2 turns on and then turns off instead of
③
state of
adjustment by the sensitivity setting button.
● ON input of remote sensitivity setting(
SW1
) :
SW1 turns on and then turns 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
light ON value by moving the object, etc.
1. T1≥1,000ms (After power turns on, it can be set after
1sec.)
2. T2≥5ms (ON or OFF input time of remote sensitivity
setting must be min. 5ms)
3. T3
≒
300ms (When ON or OFF input of remote sensitivity
setting is applied, self-diagnosis output turns on after
300ms)
4. T4
≒
40ms (ON time of self-diagnosis output)
5. T5≥500ms (When ON input of remote sensitivity setting
is applied and then apply OFF input of remote sensitivity
setting after 500ms)
<Time Chart : Light ON mode >
Answer Back function[BF4R(G)-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[BF4R(G)-R]
Even though mode switch is at Lock position, it is able to
input external sensitivity setting when Switch1 and Switch 2
are ON. Therefore please install Switch3 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
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