Slim Body Automatic Sensitivity Setting Photoelectric Sensor SU-7/SH (Discontinued Products)

Specifications

Sensor heads

Sensor heads (for general use)

Note 1 :Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.

Note 2 :The sensing range and the hysteresis of the diffuse reflective type sensor are specified for white non-glossy paper (50 x 50 mm 1.969 x 1.969 in) as the object.

Note 3 :Make sure to confirm detection with an actual sensor before use.

Note 4 :The optimum condition is the condition when the sensitivity is adjusted so that the operation indicator just lights up at the given distance in the light received condition.

Note 5 :The optimum sensitivity stands for the sensitivity level when the operation indicator just lights up in the light received condition.

Sensor heads (for special use)

Note 1 :Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.

Note 2 :The sensing range and the hysteresis of the mark sensor are specified for white non-glossy paper (50 x 50 mm 1.969 x 1.969 in separatedin) as the object.

Note 3 :Make sure to confirm detection with an actual sensor before use.

Note 4 :The optimum sensitivity stands for the sensitivity level when the operation indicator just lights up in the light received condition.

Note 5 :The minimum sensing object for SH-84R is specified for the case when the sensor detects a black line with respect to the spot as shown below.

Note 6 :The repeatability for SH-84R is specified for the case when the sensing object approaches the spot sideways as shown below (0.12 mm 0.005 in if it approaches from above or below).

Sensor heads (for general use)

Note 1 :Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.

Note 2 :The optimum sensitivity stands for the sensitivity level when the operation indicator just lights up in the light received condition.

Sensor heads (for special use)

Note 1 :Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.

Note 2 :The sensing range and the hysteresis for the chemical resistant type sensor used in the convergent reflective mode is specified for white non-glossy paper (150 x 150 mm 5.906 x 5.906 in) as the object.

Note 3 :The optimum sensitivity stands for the sensitivity level when the operation indicator just lights up in the light received condition.

Amplifiers

Note 1 :Where measurement conditions have not been specified precisely, the conditions used were an ambient temperature of +23 ℃ +73.4 ℉.

Note 2 :SU-7J is plug-in connector type.

Dimensions

• Unit: mm in

SU-7□(Discontinued products)

Amplifier

Assembly dimensions with attached amplifier mounting bracket

Notes:1) It is the external synchronization selection switch on SU-75.2) The top view is shown without the cover or the sensor head cable.

MS-DIN-2

Amplifier mounting bracket (Accessory for amplifier)

Material:Cold rolled carbon steel (SPCC) (Uni-chrome plated)

SH-21

Sensor head

SH-21E

Sensor head

Note:The above dimensions are identical for the emitter and the receiver.

SH-22

Sensor head

SH-31R(Discontinued products)
SH-31G
SH-33R

Sensor head

SH-32R(Discontinued products)

Sensor head

SU-CT1

Stripper (Accessory for amplifier)

Material:POM

MS-DS-1

Sensor head mounting bracket (Optional)

Material:Cold rolled carbon steel (SPCC) (Uni-chrome plated)Two M3 (length 14 mm0.551 in) screws with washers are attached.

MS-SS3-1

Sensor head mounting bracket (Optional)

Material:Cold rolled carbon steel (SPCC) (Uni-chrome plated)Two M3 (length 12 mm0.472 in) screws with washers are attached.

Discontinued products

SH-82R
SH-82G
SH-84R

Sensor head

SH-72

Sensor head

SH-61R

Sensor head

MS-SH6-1

Sensor head mounting bracket (Accessory for SH-61R)

Material:Stainless steel(SUS304)

MS-SH6-2

Sensor head mounting bracket (Optional)

Material:Stainless steel(SUS304)

I/O Circuit and Wiring diagrams

Standard type • NPN output

SU-7 SU-7J

I/O circuit diagram

Symbols･･･

D : Reverse supply polarity protection diode
Z_D1,Z_D2: Surge absorption zener diode
Tr₁,Tr₂: NPN output transistor

Wiring diagram

External synchronization input type

SU-75

I/O circuit diagram

Symbols･･･

D : Reverse supply polarity protection diode
Z_D1,Z_D2: Surge absorption zener diode
Tr₁,Tr₂: NPN output transistor

Wiring diagram

*1

Remote sensitivity setting type

SU-77

I/O circuit diagram

Symbols･･･

D : Reverse supply polarity protection diode
Z_D1,Z_D2: Surge absorption zener diode
Tr₁,Tr₂: NPN output transistor

Wiring diagram

*1

Remote sensitivity selection type

SU-79

I/O circuit diagram

Symbols･･･

D : Reverse supply polarity protection diode
Z_D1,Z_D2: Surge absorption zener diode
Tr₁,Tr₂: NPN output transistor

Wiring diagram

*1

Standard type • PNP output

SU-7P

I/O circuit diagram

Symbols･･･

D : Reverse supply polarity protection diode
Z_D1,Z_D2: Surge absorption zener diode
Tr₁,Tr₂: PNP output transistor

Wiring diagram

Sensing characteristics

*TYPICAL

SH-21 SH-21E

Thru-beam type

Parallel deviation

SH-31G

Thru-beam type

Parallel deviation

SH-33R

Thru-beam type

Parallel deviation

SH-22

Diffuse reflective type

Sensing field

Discontinued products

SH-31R

Thru-beam type

Parallel deviation

SH-32R

Diffuse reflective type

Sensing field

Correlation between sensing object size and sensing range

As the sensing object size becomes smaller than the standard size (white non-glossy paper 50 × 50 mm 1.969 × 1.969 in), the sensing range shortens, as shown in the left graph.
For plotting the left graph, the sensitivity has been set such that a 50 × 50 mm 1.969 × 1.969 in white non-glossy paper is just detectable at a distance of 100 mm 3.937 in.

SH-61R

Chemical resistant type

SH-72

Glass substrate detection sensor

Sensing field

SH-82R

Mark sensor

Sensing field

SH-82G

Mark sensor

Sensing field

SH-84R

Mark sensor

Sensing field

Cautions For Use

Sensor head

•Always use the sensor head and the exclusive amplifier together as a set.

Mounting

• With tapped screws

・With attached screws and nuts

The tightening torque should be 0.14 N·m or less.

・The tightening torque should be 0.29 N·m or less when mounting the sensor head with the screws.

The tightening torque should be 0.14N·m or less.

For ultra-small type, mark sensor & glass substrate detection sensor

・Use M3 screws to mount the sensor head with the attached sensor head mounting bracket.

Chemical resistant type

・Use M4 screws to assemble the sensor head with the optional sensor head mounting bracket MS-SH6-2, in order to form the convergent sensing mode.

In case of chemical resistant type sensor head

Amplifier

• Do not use where it can be exposed to molten alkali metals (sodium, potassium, lithium, etc.), fluorine gas (F₂), CIF₃, OF₂ (including gaseous state), etc.
• In case of cable extension, the extended portion should be placed in an area where it is not exposed to chemicals.

Wiring

• The self-diagnosis output does not incorporate a shortcircuit protection circuit. Do not connect it directly to a power supply or a capacitive load.

Sensitivity setting

・Normal sensitivity setting

・Maximum sensitivity setting

Full power setting
The maximum sensitivity is set. Take care that, in case of the diffuse reflective type, if a background object is present, the sensing output may turn ON even without the sensing object.

*How to set sensitivity with external inputs

Remote sensitivity setting (SU-77 only)

Instead of pressing buttons, the sensitivity can be set with the remote sensitivity setting inputs. (There is no external sensitivity shift mode.) Setting procedure The procedure is the same as for setting with sensitivity buttons, except that instead of pressing the buttons, the remote sensitivity setting input wire is shortcircuited to 0 V. The mode selection switch is set to either the “SET” or “RUN” side. ・Time chart The self-diagnosis output stays ON for 40 ms approx. 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.) T1≥1,000ms、3,000ms>T2≥5ms、T3≈310ms、T4≈40ms、T5≥500ms Notes: 1)Signal condition ... Low: 0 to 1 V, High: 4.5 to 30 V, or open Input impedance: 10 kΩ 2):Do not move the object, etc., or change the incident light intensity during T3.

・Sensitivity for detecting minute differences

・For applications in which beam intensity fluctuates

Remote sensitivity selection function (SU-79 only)

• SU-79 can store four channels of sensitivity levels, which can be selected as per your requirement. Designate the channel that is to store the sensitivity by making the remote sensitivity selection inputs 1 and 2 suitably High or Low.

Wiring

Signal condition                 Channel selection

Low: 0 to 1 V
High: 4.5 to 30 V, or open
Input impedance: 10 kΩ

External synchronization function (SU-75 only)

• The external synchronization function can be used to control the timing of sensing. Edge trigger or gate trigger are available.

T≥0.6ms（T≧0.8ms when the interference prevention function is used）

Note:The external synchronization selection switch must be turned fully clockwise or counterclockwise.

Test input (emission halt) function (SU-75 only)

• When the test input (emission halt input) (violet) is shortcircuited to 0 V (Low), the beam emission is halted. This function is useful for a start-up test since the sensing output can be made ON / OFF without the sensing object. Short-circuit to 0 V and open the input, repeatedly. If the sensing output follows this operation, the sensor is working well, else not.

Timer function (Excluding SU-75)

• Every SU-7 series amplifier (excluding SU-75) is incorporated with a variable ON / OFF delay timer for 0 to 5 sec.

ON-delay
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.

OFF-delay
Since the output signal is extended for a fixed time interval, this function is useful if the output signal is so short that the connected device cannot respond.

• Timer period setting

Adjust the time duration of ON or OFF delay by turning the timer adjuster.

Note:Adjust the timer under “SET” mode. Adjustment is not allowed in “SIF” or “RUN” mode.

Self-diagnosis function

• The sensor checks the incident light intensity, and if it is reduced due to dirt or dust, or beam misalignment, an output is generated.

[1]The self-diagnosis output transistor stays in the “OFF” state during stable sensing.

[2]When the sensing output changes, if the incident light intensity does not reach the stable light received level or the stable dark level, the self-diagnosis output becomes ON. It is automatically restored after 40 ms approx. Further, the self-diagnosis output changes state when the sensing output changes from Light to Dark state.
It is not affected by the output operation of the sensing output.

[3]In case of insufficient beam interruption, there will be a time lag before the self-diagnosis output turns ON.

Others

• Do not use during the initial transient time (0.5 sec.) after the power supply is switched on.

Use conditions to comply with CE Marking
(SH-3□ only)

Place ferrite core at the sensor cable.

• Following work must be done in cace of using this product as a CE marking (European standard EMC Directive) conforming product.

Place a ferrite core near the amplifier.
In that condition, the sensor head cable should be single-winding.
Prepare 1 pc. of the following recommended ferrite core (or an equivalent product.)
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