Page 1
INSTRUCTION MANUAL
Slim Body
Thank you very much for using SUNX sensors. Please read this
Instruction Manual carefully and thoroughly for the correct and
optimum use of this sensor. Kindly keep this manual in a
convenient place for quick reference.
This product is not a safety sensor. Its use is not intended or designed
to protect life and prevent body injury or property damage from
dangerous parts of machinery. It is a normal object detection sensor.
Type
Model No.
Item
Applicable sensor head
Supply voltage
Current consumption
Sensing output
Output operation
Short-circuit protection
Self-diagnosis
output
Output operation
Short-circuit protection
External input
External synchro nization input
Test input
Remote sensitivity
setting input
External sensitivity
switching input
Response time
Timer function
Ambient temperature
Ambient humidity
Material
Accessories
Notes: 1)2)The plug-in connector type of SU-7 has suffix ‘J’ at the end of the model No.
Model No.: SU-7J
Except for the connector portion, its specifications are the same as for SU-7.
For SU-77, it can also be
Make sure to carry out the wiring in the power supply off condition.
Verify that the supply voltage variation is within the rating.
If power is supplied from a commercial switching regulator, ensure that the
frame ground (F.G.) terminal of the power supply is connected to an actual
ground.
In case noise generating equipment (switching regulator, inverter motor,
etc.) is used in the vicinity of this product, connect the frame ground (F.G.)
terminal of the equipment to an actual ground.
Do not use during the initial transient time (0.5 sec.) after the power supply
is switched on.
The self-diagnosis output is not incorporated with a short-circuit protection
circuit. Do not connect it directly to a power supply or a capacitive load.
Do not run the wires together with high-voltage lines or power lines or put
them in the same raceway. This can cause malfunction due to induction.
Extension up to total 100m is possible with 0.3mm
Avoid dust, dirt, and steam.
Take care that the sensor does not come in direct contact with water, oil,
grease or organic solvents, such as, thinner, etc.
Automatic Sensitivity Setting Amplifier
SU7 Series
NPN output
Standard
type
External synchronization input type
Remote sensitivity
setting type
Remote sensitivity
selection type
SU-7 SU-75 SU-77 SU-79
SH series
12 to 24V DC±10% Ripple P-P: Max. 10%
Max. 35mA
NPN open-collector transistor
Maximum sink current: 100mA
Applied voltage: 30V DC or less
(between sensing output and 0V)
Residual voltage:
NPN open-collector transistor
Maximum sink current: 50mA
Applied voltage: 30V DC or less
(between self-diagnosis output and 0V)
Residual voltage:
ON in unstable sensing condition (restored after approx. 40ms) or when
sensing output is short-circuited (restored when short-circuit is removed)
(For SU-77, it turns ON for approx. 40ms also after the external sensitivity switching input is received.)
0.6ms or less (0.8ms or less when interference prevention function is used)
–10 to +55˚C (No dew condensation or icing allowed), Storage: –20 to +70˚C
Enclosure: Heat-resistant ABS, Enclosure: Polycarbonate, Lock lever: PPS
MS-DIN-2 (Amplifier mounting bracket): 1 No., SU-CT1 (Stripper): 1 No.
1.0V or less (at 100mA sink current
0.4V or less (at 16mA sink current
ON/OFF mode is set by the ON/OFF buttons. (Note 2
Equipped
1.0V or less (at 50mA sink current
0.4V or less (at 16mA sink current
Signal condition
High…4.5 to 30V, or open
Low…0 to 1V
Input impedance: 10kΩ
Equipped (except for SU-75)
35 to 85% RH, Storage: 35 to 85% RH
set by the remote sensitivity setting input.
PNP open-collector transistor
Maximum source current: 100mA
Applied voltage: 30V DC or less
(between sensing output and +V)
)
Residual voltage:
)
PNP open-collector transistor
Maximum source current: 50mA
Applied voltage: 30V DC or less
(between self-diagnosis output and +V)
)
Residual voltage:
)
2
, or more, cable.
PNP output
Standard
type
SU-7P
2.0V or less (at 100mA source current
1.0V or less (at 16mA source current
)
2.0V or less (at 50mA source current
1.0V or less (at 16mA source current
CUTTING CABLE
Insert the cable into a hole provided for
cutting in SU-CT1, and press the blade
Holes for
cutting
down.
Note:
Do not stop the blade halfway. Press it up to
the bottom in one stroke.
Inlet for
stripping
STRIPPING CABLE
Press the blade downwards and stop it at the middle of the stroke.
Top position Middle position
There is a stopping
feel at the position
shown by the arrow.
Insert the cable into one of the inlets
provided for stripping at the center of
SU-CT1.
Note:
The cable must be inserted till it touches the
stopper.
Bottom view of SU-CT1
Stopper
Cable
Insert till
the end.
Press the blade fully down.
Note:
Do not tilt the blade when pressing.
With the blade still pressed, rotate SU-CT1
about a half-turn.
With the blade still pressed, withdraw SU-CT1
from the cable. Only the insulation is stripped.
Notes: 1)
)
)
Strip the cables one by one.
2)
The blade of SU-CT1 is not replaceable.
How to mount the amplifier
Mount the rear part of the amplifier on
the attached amplifier mounting bracket
(
MS-DIN-2) or a 35mm width DIN rail.
Press down the front part on the amplifier mounting bracket or the 35mm
width DIN rail to fit it.
Attached amplifier mounting
bracket of 35mm width DIN rail.
How to remove the amplifier
)
)
Hold the amplifier and push it forward.
Lift up the front part to remove the amplifier.
Sensor head connection
Open the case cover.
Process the cable end as shown on
Case cover
the right.
Note:
Do not remove the lead wire insulation.
Bring down the cable lock lever.
Insert the cables into the cable
inlets.
‘ ’ Receiver: Black cable
‘ ’ Emitter: Gray cable
Notes: 1)
Both the shield wires must be separately
twisted and placed facing each other on the
inside. Both inlets form symmetrical irregular
ovals that include the supplementary holes
facing each other. Insert the cables such
that the shield wires pass through the
supplementary holes. If the shield wires
pass through a part other than the supplementary holes, misconnection will occur.
2)
Place the shield wires facing each other,
and insert the cables straight, without
bending, till the end.
Pull up the cable lock lever to lock.
Shield wire
Cable wire
5 to 9mm
5 to 9mm
Gray Black
Black
Gray
Lead wire
Lead wire
Cable
inlets
Put on the case cover.
Case cover
Notes: 1)
If the cables are removed after releasing the lock lever, the same
cables can be connected to the amplifier, once more, as they are.
But for the third time, start from Step 2. If cable lock and release
operation is repeated, the lead wire may get cut causing a
connection failure.
If the cable end is left in the insertion hole, insert the cable after
2)
removing the cable end left inside.
For removing the cable end, turn the
sensor over and tap around the cable
insertion holes. If this does not work,
peel off the seal at the back of the
amplifier and take out the cable end.
(The seal can be stuck again.)
Seal
Cable end
Seal
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I/O Circuit Diagram
[NPN output type]
D
5V
5V
100mA
ZD1
Sensor circuitSensor circuit
ZD2
Tr2
Sensor internal circuit
max.
Tr1
50mA
max.
Color of lead wires
(Brown) +V
(Pink) Input 1 (Note
(Violet) Input 2 (Note
(Black) Sensing output
(Orange)
Self-diagnosis
output
(Blue) 0V
Users’ circuit
)
Load
)
If a disable switch is provided here,
it prevents wrong setting.
[PNP output type]
(Brown) +V
D
Tr3
ZD1
Symbols... D
Z
Tr1, Tr2
Tr3, Tr4
The name of input wires differs depending on the model No.
Note:
Model No.
SU-7
Input
SU-7P
Input 1
Input 2
Mode selection switch
Timer adjuster (Note)
Sensitivity setting buttons
Note:
It is the remote synchronization selection switch for SU-75.
(Black) Sensing output
Tr4
(Orange) Self-diagnosis output
ZD2
(Blue) 0V
Users’ circuitSensor internal circuit
Load
50mA
max.
: Reverse supply polarity protection diode
D1, ZD2
: Surge absorption zener diode
: NPN output transistor
: PNP output transistor
SU-75
External synchronization
input (ES)
Test
input (CONT.)
OND
RUN
SIF
SET
SU-79
ON button
OFF button
Remote sensitivity
setting input (R. ON)
Remote sensitivity
setting input (R. OFF)
OFD
ON
TIMER
OFF
+
100mA
max.
12 to 24V DC
±10%
–
+
12 to 24V DC
±10%
–
Load
Load
SU-77 SU-79
External sensitivity
switching Input 1 (S1)
External sensitivity
switching Input 2 (S2)
STB
OUT
Operation
indicator (Red)
Stable operation
indicator (Green)
Standard Setting (Automatic sensitivity setting function)
In case the sensing output is ON when object is detected.
Setting procedure
Step Operation
Place sensor head within the sensing range. (Note1)
RUN
Set mode selection switch to “SET”.
SIF
SET
Press ON button with the sensing object present. (Release it within 3s.)
Thru-beam Reflective
Mark
Light is interrupted
Base
When ON state is recognized by the sensor,
stable operation indicator (green) will flash.
ON
OFF
STB
OUT
Press OFF button with the sensing object absent. (Release it within 3s.)
Thru-beam
Light is received
Reflective
Mark
Base
ON
OFF
The stable operation indicator will flash twice if the sensitivity
difference (received light intensity difference) between ON state
and OFF state is sufficient and a stable detection is possible.
Stable operation indicator will flash continuously if stable detection
is not possible. (Note 2)
Set mode selection switch to “RUN”.
Now, the sensitivity setting buttons are ineffective.
RUN
SIF
SET
So, even if the buttons are pressed by mistake, the registered
sensitivity will remain unchanged.
In case the sensing output is ON when object is not detected.
In the above procedure
Press ON button with the sensing object absent.
Press OFF button with the sensing object present.
Notes: 1)
Notes: 2)
As the sensing range will differ according to the type of sensor head, refer to
the catalog. The sensing range for the reflective type sensor head is the
figure for white non-glossy paper. The actual sensing range will differ
according to the sensing object's color, surface condition, etc.
The sensitivity can be registered in the sensor even if the sensing condition
is not stable.
Setting by remote sensitivity setting input (For SU-77 only)
Instead of pressing buttons, the sensitivity can be set with the
remote sensitivity setting input.
(Shift setting cannot be done with remote sensitivity setting input.)
Setting procedure
The procedure is the same as for setting with the sensitivity setting buttons,
except that instead of pressing the buttons, the remote sensitivity setting
input wire is short-circuited to 0V. The mode selection switch is set to either
the “SET” or “RUN” side.
Orange (Self-diagnosis output)
Black (Sensing output)
ON
ON
OFF
OFF
Brown (+V)
Blue (0V)
R. ON
Pink
R. OFF
Violet
Orange (Self-diagnosis output)
Black (Sensing output)
Brown (+V)
Blue (0V)
Normally, set the sensitivity as per Standard Setting .
If the sensing is unstable, set as per limit, shift or full power setting.
Received light intensity
With
Standard setting
Limit setting
Shift setting
Full power setting
workpiece
Without
workpiece
Large
Small
ON input
Operation level
OFF
input
The optimum sensitivity is set with one press of the button (or
with one Low input). The sensitivity can be set without
sensing a workpiece.
If the received light intensity fluctuates either in the workpiece
present or absent state, shift the operation level towards the
stable light intensity state.
The MAX. sensitivity is set.
In case of reflective type sensor, if a background is present,
Note:
the sensor may become ON even without a workpiece.
The operation level is
set approximately
halfway between the
light intensity received for ON input and
OFF input.
R. ON
Pink
R. OFF
Violet
Time chart
The self-diagnosis output stays ON for approx. 40ms after ON input or OFF
input is recognized by the sensor.
If the difference between the ON and OFF levels (the difference between
incident light levels) is so small that stable detection is not possible, it
does not turn ON.
Power supply
Remote sensitivity
ON input (R. ON)
Remote sensitivity
OFF input (R.OFF)
Self-diagnosis
output (Note2)
Sensing output
T1 1,000ms, 3,000ms T2 5ms, T3 310ms, T4 40ms, T5 500ms
Notes: 1)
Notes: 2)
Signal condition ... Low: 0 to 1V, High: 4.5 to 30V, or open
Input impedance: 10kΩ
Do not move the workpiece, etc., or change the received light intensity
during T
ON
OFF
High
Low
High
Low
ON
OFF
3.
T1
T2
T5 T2
(
)
T3
Note 2
(
)
T3
Note 2
T4 T4
Sensing ready
Page 3
Limit Setting (Limit setting function)
For detecting a tiny object For stable detection of an object without
detecting the background
Background
Setting procedure
Step Operation
Set the sensor without an object and under stable light receiving
condition.
Set mode selection switch to “SET”.
Thru-beam
Light is received
Diffuse reflective
Non-sensing condition
Background
RUN
SIF
SET
By pressing either ON or OFF button for 3 sec. or more, the
threshold level is set
15% either lower or
higher than the
object absent level
as shown in the right
figure.
Please note that
the output operation cannot be
reversed.
Large
100%
Received light
intensity
Small
O
About
F
15%
F
Operation
O
About
15%
level
N
ON button setting OFF button setting
Press ON button
for 3 seconds or
more
Press OFF button
for 3 seconds or
more
O
N
O
F
F
Operation
level
For example, press the ON button for detecting a tiny object.
RUN
Set mode selection switch to “RUN”.
SIF
SET
Time chart
Power supply
Remote sensitivity
ON input
Self-diagnosis
output (Note2)
Sensing output
T1 1,000ms, T2 3,000ms, T3 310ms, T4 40ms
Notes: 1)
Notes: 2)
Do not move the workpiece, etc., or change the incident light intensity during
3.
T
Setting cannot be done if the light received is too strong or too weak.
ON
OFF
High
Low
ON
OFF
T2T1
T3 (Note 1)
T4
Sensing ready
Shift Setting (Sensitivity shift function)
In case of using thru-beam type sensor
heads in a dusty environment
The optical beam can be interrupted without a
sensing object if there is dirt or dust on the
sensor heads. Sensing will be more reliable
against dirt or dust if the sensitivity is shifted
towards the stable (sensing object sensed) side.
Setting procedure
Step Operation
Set the sensitivity by following the standard setting procedure.
(If the sensitivity margin is small, sensitivity shift cannot be done.)
RUN
Set mode selection switch to “SIF”.
Press the sensitivity setting button which was pressed in the stable
light received condition. For example, for a thru-beam type sensor,
if there is dirt or dust, press the button which was pressed with the
sensing object being sensed.
Large
OFF
Received light
intensity
ON
Small
Sufficient
received light
Insufficient
received light
Light intensity decreases
Shift
OFF input
Operation level before shift
Operation level after shift
ON input
Set mode selection switch to “RUN”.
SIF
SET
RUN
SIF
SET
Full Power Setting
Setting procedure
Step Operation
Make sure that the sensor receives no light.
RUN
Set mode selection switch to “SET”.
Press the “ON”
button in the LightON mode.
Press the “OFF”
OFF
ON
button in the DarkON mode.
When the input is recognized by the sensor,
the stability indicator (green) blinks.
Press the “OFF”
button in the LightON mode.
Press the “ON”
OFF
ON
button in the DarkON mode.
SIF
SET
OFF
ON
STB
OUT
OFF
ON
When the input is recognized by the sensor, the stability indicator
(green) blinks.
RUN
Set mode selection switch to “RUN”.
SIF
SET
Four different sensitivities can be registered in SU-79 and can
be switched from one to another simply by external signals.
Wiring diagram
Signal condition
4.5 to 30V
High
or open
0 to 1V
Low
Self-diagnosis output
Sensing output
+V
0V
S1
S2
Channel selection
Input
1
2
3
4
Input S1 Input S2
Low Low
Low High
High Low
High High
No.
Sensitivity setting procedure
Set mode selection switch to “SET”.
1.
Select the channel number by setting the external sensitivity selection
2.
input S1 or S2 to High or Low.
Adjust the sensitivity by referring to the section “SENSITIVITY SETTING”.
3.
Repeat steps 2 and 3 as required.
4.
Set mode selection switch to “RUN”.
5.
Sensitivity switching procedure
Set mode selection switch to “RUN”.
1.
Select the channel number by setting the external sensitivity selection
2.
input S1 or S2 to High or Low.
Notes: 1)
Notes: 2)
It will take 310ms for the sensor to be able to sense after selecting the
channel.
The timer duration is common for all channels.
By using the external synchronization function, the timing for
sensing can be controlled.
Trigger synchronization and gate synchronization are available.
Time chart
Sensor
signal
External
synchronization
input
Sensing
output
Synchronization
selection
switch
Notes: 1)
Notes: 2)
Time 0.6ms (When using interference prevention function: T 0.8ms)
Trigger synchronization
ON
OFF
High
Low
ON
OFF
The external synchronization selection switch must be turned fully clockwise
or counterclockwise.
When the external synchronization function is not used, set the
external synchronization selection switch to gate
synchronization and keep the external synchronization input
open (HIGH).
T
approx. 40ms
Gate synchronization
ON
OFF
High
Low
ON
OFF
T
Page 4
Emission is stopped when test input (violet) is set Low.
Sensing output can be turned ON and OFF without a sensing
object and this can be used for start-up inspection.
Test input
(Violet)
OFF
[Emission] [No Emission]
0V (Blue)
Test input
(Violet)
0V (Blue)
ON
It is judged that sensor operation is normal if the sensing output
follows the connection/disconnection of the test input, and
abnormal if it does not follow.
Test input
Sensing output
(Dark-ON mode)
High
Low
T T T
ON
OFF
Normal
T 0.6ms
when using interference
prevention function: T 0.8ms
Abnormal
SU-7, SU-77, SU-79, SU-7P are incorporated with 0 to 5s
variable timer.
ON-delay
Function:
Application:
Neglects short output signals.
As only longer signals are extracted, this function is
useful for detecting if a line is clogged, or for sensing
only objects taking a long time to travel.
(e.g.) Sensing of jamming in an assembly line
OFF-delay
Function:
Application:
Extends the output signal for a fixed period of time.
This function is useful if the output signal is so short
that the connected device cannot respond.
Time chart Time: T=0 to 5s
Operation
NormalON-delay
OFF-delay
Notes: 1)
Notes: 2)
Set the time period by setting the mode selection switch to “SET”.
The first graduation is 40ms. From the second graduation onwards the time
period increases and is 5s max.
Sensing
condition
Operation
indicator (red)
(In Light-ON mode)
Stable
operation
indicator
(green)
Self-diagnosis
output (green)
Sensing
state
ON in
sensing state
ON in nonsensing state
ON in
sensing state
ON in nonsensing state
ON in
sensing state
ON in nonsensing state
T
T T T
T
T
T
Received
light intensity
A
too low
AB
40ms
Light interruption
B
insufficient
Sensing
Non-
Sensing
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
T
OFF
ON
OFF
Stable light
received level
Sensing output
operation level
Stable light
interruption level
ON
OFF
ON
OFF
ON
OFF
40ms
The self-diagnosis output transistor is “OFF” during stable sensing.
If the sensor does not reach either stable light received level or stable
light interruption level when sensing output turns ON or OFF, selfdiagnosis output once turns ON but turns OFF after approx. 40ms.
(
It does not affect the operation of the sensing output.
)
There is a delay for the self-diagnosis output to turn ON only when light
interruption is insufficient.
After setting the sensitivity, the margin of the set value can be visually
confirmed. The stability margin can be confirmed by the number of
times that the stable operation indicator (green) flashes when mode
selection switch is slided to “SIF” or “RUN” from “SET”.
No. of flashes
Relation with
stable
operation
indicator
Margin
01 2345
STB
OUT
Low
OFF
STB
ON
OUT
High
Normally, the margin should be set as large as possible.
How to increase the margin: Shorten the sensing range,
use an optimum sensor head, etc.
The SU-7 series has a built-in interference prevention function.
Two sensor heads can be mounted very closely by setting
different emission frequencies.
Setting procedure
Step
Set mode selection switch to “SET”.
Press “ON” and “OFF” buttons
simultaneously for minimum two
seconds. As stable operation indicator
(green) continues to flash, release the
buttons.
Press “ON” button, and then release it.
(Stable operation indicator will flash
twice.)
Set mode selection switch to “RUN”.
(This completes the setting for one sensor.)
Apply Step 1 and 2 for the other sensor.
Press “OFF” button, and then release it.
(The stable operation indicator will flash
twice.)
Set mode selection switch to “RUN”.
(This completes the setting.)
Operation
RUN
SIF
SET
OFF
ON
OFF
ON
RUN
SIF
SET
OFF
ON
RUN
SIF
SET
Cancellation
Step
Press “ON” and “OFF” buttons
simultaneously for minimum two
seconds. Stable operation indicator
(green) will flash. Release the button.
Press “ON” and “OFF” buttons simultaneously again.
(Stable operation indicator will flash twice.)
Notes: 1)
When using interference prevention function,
the hysteresis will increase, and the response
time will be extended, as compared to normal
operation. Always confirm the operation after
setting the interference prevention function.
Button Emission frequency Response time
FREQ.1
BROWN , +V
BLUE , 0V
ON
PINK , R.ON
FREQ.2
BROWN , +V
BLUE , 0V
OFF
PINK , R.ON
A mark can be put on the nameplate at the side of the
sensor body. Please use this, if necessary.
Notes: 2)
When the interference prevention function is used with thru-beam type
sensors, set the sensitivity by standard setting, limit setting or shift
setting.
FREQ.1
FREQ.1
Operation
BLACK , OUT
ORANGE , ALM
VIOLET , R.OFF
FREQ.2
BLACK , OUT
ORANGE , ALM
VIOLET , R.OFF
FREQ.2
Max. 0.6ms
Max. 0.8ms
OFF
ON
http://www.sunx.co.jp/ SUNX Limited
Head Office
2431-1 Ushiyama-cho, Kasugai-shi, Aichi, 486-0901, Japan
Phone: +81-(0)568-33-7211 FAX: +81-(0)568-33-2631
Overseas Sales Dept.
Phone: +81-(0)568-33-7861 FAX: +81-(0)568-33-8591
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