Sunx GA-311, GH-2SE, GH-8SE, GH-3SE, GH-F8SE Instruction Manual

INSTRUCTION MANUAL

Amplifier-separated Type

Inductive Proximity Sensor

GA-311

Amplifier

GH-غSE

Sensor head

Thank you very much for using SUNX products. Please read this
Instruction Manual carefully and thoroughly for the correct and optimum
use of this product. Kindly keep this manual in a convenient place for quick
reference.

٨

٨

Never use this product as a sensing device for
personnel protection.
In case of using sensing devices for personnel
protection, use products which meet standards, such
as OSHA, ANSI or IEC etc., for personnel protection
applicable in each region or country.

WARNING

SPECIFICATIONS

1

Cable (Note 4)

Connector attached oil resistant high frequency coaxial cable, 3m long

[Spatter resistant cable for GH-F8SE (Outer shield: Fluorine resin)]

Enclosure:

SUS303

Sensing part:

PVC

Enclosure:

SUS303

Sensing part:

ABS

Enclosure:

SUS303

Sensing part:

PAR

Enclosure:

SUS303

Sensing part:

ABS

Enclosure:

SUS303
Sensing part:
Fluorine resin

Material

Temp. characteristic

(Note 3)

Within r5%Within r7% Within r4%

-10 to +60, Storage: -20 to +70Ambient temperature

IP50 (IEC)

IP67 (IEC), IP67g (JEM)Protection

0.04mm or less

0.07mm or less

0.05mm or lessHysteresis (Note 2)

Iron 1010t1mm

Stable sensing range

(Note 1)

0 to 0.8mm0 to 0.6mm 0 to 2.0mm0 to 1.0mm

Max. operation distance

(Note 1)

1.8mm1.2mm 4.0mm2.4mm

GH-3SE GH-F8SEGH-2SE GH-8SEGH-5SE

Spatter-resistant type

Cylindrical type

GA-311Applicable amplifier

Model No.

Item

Type

Iron 55t1mm

Standard sensing object

35 to 85% RH, Storage: 35 to 85% RH

Ambient humidity

15g approx.

35g

approx.

40g

approx.

55g

approx.

Weight

٨ Sensor head

Notes: 1)

2)

3)

4)

The stable sensing range represents the sensing range for which the sensor
can satisfy all the given specifications with the standard sensing object.
The maximum operation distance represents the maximum distance for
which the sensor can detect at +20 constant ambient temperature.
Usage within the stable sensing range is recommended for accurate
sensing applications.
Value is given for the stable sensing range.
The value represents the variation in the operation distance, that has been
set within the stable sensing range at +20, for an ambient temperature
drift from 0 to +55. (The value is for sensor head on its own.)
The length of the sensor head cable cannot be changed.

Notes: 1)

2)

3)

50mA, if five, or more, amplifiers are connected in cascade.
The value represents the variation in the operation distance, that has been
set within the stable sensing range at +20, for an ambient temperature
drift from 0 to +55. (The value is for amplifier on its own.)
The cable for amplifier connection is not supplied as an accessory. Make
sure to use the optional quick-connection cable given below.
Main cable (3-core): CN-73-C1 (cable length 1m), CN-73-C2 (cable length 2m)

CN-73-C5 (cable length 5m)

Sub-cable (1-core) : CN-71-C1 (cable length 1m), CN-71-C2 (cable length 2m)

CN-71-C5 (cable length 5m)

25mA or lessCurrent consumption

12 to 24V DCr10 %ޓRipple P-P10 % or lessSupply voltage

Type

Item

GA-311

Output

NPN open-collector transistor

࡮Maximum sink current: 100mA
࡮Applied voltage: 30V DC or less (between output and 0V)
࡮Residual voltage: 1V or less [at 100mA (Note 1) sink current]

18-turn potensiometer Sensitivity adjuster

Orange LED (lights up when the output is ON)Operation indicator

Max. response frequency

3.3kHz

Normally open / closed Selectable with the operation mode switchOutput operation

Incorporated

Short-circuit protection

Red LED (lights up when the sensor head is disconnected or mis-contacted)

Disconnection alarm indicator

Ambient temperature

-10 to +60 (if 4 to 7 units are connected in cascade: -10 to +50,
if 8 to 16 units are connected in cascade: -10 to +45) (No dew con­densation or icing allowed), Storage: -20 to +70

Temp. characteristic

(Note 2)

Within r5%

35 to 85% RH, Storage: 35 to 85% RHAmbient humidity

Enclosure: Heat-resistant ABS, Case cover: Polycarbonate

Material

15g approx.

Weight

٨ Amplifier

CAUTIONS

2

٨
٨
٨
٨

٨

٨

٨

٨

٨
٨
٨
٨

٨

٨

٨

Make sure that the power supply is off while wiring or adding the units.
Take care that wrong wiring will damage the sensor.
Verify that the supply voltage variation is within the rating.
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.
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.
Do not use during the initial transient time (0.5 sec.) after the power
supply is switched on.
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.
Be sure to use the optional quick-connection cable for amplifier
connection. Furthermore, extension up to 100m (50m: 5 to 8 units are
connected in cascade, 20m: 9 to 16 units are connected in cascade) is
possible with 0.3mm

2

or more, cable. However, in order to reduce noise,
make the wiring as short as possible.
Take care that when the cable is extended, the residual voltage rises.
Do not shorten or lengthen the sensor head cable.
This sensor is suitable for indoor use only.
Do not use the sensor at places having intense vibrations, as this can
cause malfunction.
Take care that the sensor does not come in direct contact with water, oil,
grease, organic solvents, such as, thinner etc., or strong acid, and alkaline.
Make sure that the sensing end is not covered with metal dust, scrap or
spatter. It will result in malfunction.
Take care that stress by forcible bending or pulling is not applied directly
to the sensor head cable joint.

MOUNTING

3

Be sure to use a sensor head and amplifier as a set.

Disconnection method

Ԙ

Pressing the projection on the sensor
head connector, pull out the connector.

Note:

Take care that if the connector is pulled out without pressing the projection, the pro­jection may break. Do not use a sensor head connector whose projection has bro­ken. Furthermore, do not pull by holding the cable, as this can cause a cable-break.

Connection method

ԘԙInsert the the sensor head connector into

the connector inlet till a click is felt.
Fit the cover on the connector.

٨

Connection of sensor head

Ԙ

Sensor head
connector part

Cover

ԙ

Projection

ԘԙFit the rear part of the mounting section of the

amplifier on a 35mm width DIN rail.
Press down the rear part of the mounting section
of the unit on the 35mm width DIN rail and fit the
front part of the mounting section to the DIN rail.

How to mount the amplifier

Take care that if the front part is lifted without pushing the amplifier forward, the
hook on the rear portion of the mounting section is likely to break.

Note:

How to remove the amplifier

ԘԙPush the amplifier forward.

Lift up the front part of the amplifier to remove it.

٨

Mounting of amplifier

Ԙ

35mm width DIN rail

ԙ

Ԙ

ԙ

٨ Mounting of sensor head

Do not tighten it with excessive strength.Note:

࡮ The tightening torque

for mounting should be
as given right.
Furthermore, be sure
to use a set screw with
a cup-point end.

0.17N㨯m

4 or more

0.78N㨯m

GH-3SE

5 or more

0.59N㨯m

GH-5SE

5 or more

GH-8SE
GH-F8SE

Model No.

Amm

Tightening torque

3 or more

0.17N㨯mGH-2SE

Set screw (M3)
(Cup-point end)

A

Mounting with a set screw

Influence of surrounding metal

٨ The surrounding metal

will affect the sensing
performance. Keep the
minimum distance
specified in the table
right.

4GH-3SE
5GH-5SE

9

GH-8SE
GH-F8SE

Model No.

Bmm

3

GH-2SE

B

Background metal

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CONNECTION

4

Make sure that the power supply is off while connecting / disconnecting the
quick-connection cable.

Connection method

Disconnection method

Note: Take care that if the connector is pulled out without pressing the

projection, the projection may break. Do not use a quick-connection cable
whose projection has broken.
Furthermore, do not pull by holding the cable, as this can cause a cable-break.

Ԙ Pressing the projection at the top of the

quick-connection cable connector, pull out
the connector.

Projection

ԘԙHolding the connector of the quick-connec-

tion cable, align its projection with the
groove at the top portion of the amplifier
connector.
Insert the connector till a click is felt.

Groove

Projection

Quick-connection cable

٨࡮Sensing range

The sensing range is specified for the standard sensing object. With a
non-ferrous metal, the sensing range is obtained by multiplying with the
correction coefficient specified below.

Note: The sensing range also changes if the sensing object is plated.

Correction coefficient

Aluminum

Brass

Stainless steel
(SUS304)

Model No.

1111

0.68 approx.

0.51 approx.

0.53 approx.

0.69 approx.

0.39 approx.

0.41 approx.

0.64 approx.

0.32 approx.

0.37 approx.

0.55 approx.

0.33 approx.

0.35 approx.

GH-8SE
GH-F8SE

GH-2SE GH-3SE GH-5SE

Metal

Iron

٨࡮Mutual interference

When two or more sensors are installed in parallel or face to face, keep the
minimum separation distance specified below to avoid mutual interference.

15
20

26

D (mm)

10
20GH-3SE
25GH-5SE

40

GH-8SE
GH-F8SE

Model No.

C (mm)

15

GH-2SE

Face to face mountingCParallel mounting

D

I/O DIAGRAMS

6

Note: The quick-connection cable does not have +V(Blown) and 0V(Blue). The

supply voltage is supplied through the main cable connector.

Symbols... D

Z

D

Tr

: Reverse supply polarity protection diode
: Surge absorption zener diode
: NPN output transistor

D

100mA max.

1

2

3

1

4

2

3

ZD

Tr

Connector pin No. for power supply side

Connector pin No. for the sensor head side

Load

(Brown) +V (Note)

(Black) Output

+

12 to 24V DC

r10%



(Blue) 0V (Note)

User's circuit

Internal circuit

Color code of quick-connection cable

Not used

Signal wire

Shielded wire

Not used

Sensor head side connector

Power supply side connector

٨

Terminal arrangement diagram

Ԙ㧗V

ԚOutput
ԙ0V

ԘNot used
ԙSignal wire

ԛNot used

ԚShielded wire

٨
٨

٨

٨

٨

٨

٨

Make sure that the power is off while cascading/removing the amplifiers.
Be sure to check the allowable ambient temperature, as it depends on
the number of amplifiers connected in cascade.
In case two, or more, amplifiers are connected in cascade, make sure to
mount them on a DIN rail.
When the amplifiers move on the DIN rail depending on the attaching
condition, fitting them between the optional end plates (MS-DIN-E)
mounted at the two ends.
When connecting in cascade, mount the amplifiers close to each other, fitting
them between the optional end plates (MS-DIN-E) mounted at the two ends.
When connecting more than two amplifiers in cascade, use the sub cable
(CN-71-Cغ) as the quick-connection cable for the second amplifier onwards.
This product does not incorporate the communication function When
this product used by cascading along with other than this product,
mount at the either side of the cascaded products.

CASCADING UNITS

5

Refer to the ' MOUNTING' for mounting/dismantling the amplifiers.

3

Cascading method

Main cable
(CN-73-Cغ) (optional)

Ԙ

ԙ

Ԛ

ԛ

Mount the amplifiers, one by
one, on the 35mm width DIN
and set them close to each
other without any gap between
them.
Connect the quick-connection
cables to the amplifiers.
Mount the end plate (MS-DIN-E)
(optional) at both ends to hold
the units between their flat sides.
Tighten the screws to fix the
end plates (MS-DIN-E)

Sub-cable
(CN-71-Cغ)
(optional)

End plate
(MS-DIN-E) (optional)

End plate
(MS-DIN-E)
(optional)

Dismantling

Ԙ

ԙ

Pressing the projection at the top
of the quick connection cable
connector, pull out the connector.
Remove the amplifiers.

SENSITIVITY ADJUSTMENT

8

Note: Use a flathead screwdriver (please arrange separately) to turn the adjuster

slowly. Turning with excessive strength will cause damage to the adjuster.

Step Sensing condition Adjustment

Ԙ

Set the operation mode switch to
NORM. (Initial setting)

࡮

Turn the sensitivity adjuster fully coun­terclockwise. (Minimum sensitivity)

Sensitivity adjuster

Approach
along sens­ing axis

Approach
perpendicu­lar to sens­ing axis

Ԛ

Select the operation mode as per your application.
(NORM.: Normally open, INV.: Normally closed)

ԙ

࡮

࡮

Place the sensing object within the
stable sensing range.
Turn the sensitivity adjuster clockwise
and set it at the point where the
operation indicator (orange) lights up.

࡮

࡮

Place the sensing object within the
stable sensing range.
Turn the sensitivity adjuster clockwise,
and set it at the optimum sensing point
which is a little beyond the point where
the operation indicator (orange) lights up.

Sensing object

Sensor
head

Movement
direction

Sensing object

Sensor
head

Movement
direction

PART DESCRIPTION

7

Operation indicator (Orange)

Disconnection alarm indicator (Red) Operation mode switch

Sensitivity adjuster

DIMENSIONS (Unit: mm)

9

٨ GH-غSE / Sensor head

A

B

C

Cable 3m long

15
15
15

B

12

Ǿ3.8GH-3SE
Ǿ5.4GH-5SE

GH-8SE Ǿ8.0

15

Ǿ2.5
Ǿ2.5
Ǿ2.5

C

Ǿ1.6

Ǿ2.65GH-F8SE Ǿ8.0

Model No.

A

Ǿ2.8

GH-2SE

Note: The side view is with the sensor head connector and the quick-connection

cable.

٨ GA-311 / Amplifier

1.9 0.4

21.95

33.5

53.7

2.5

4.65

15.55

10

6.3

64.5(16) (7)

36.5 14.5

30.5

3 3.95

10.5

Sensor head
connector

Connector cover

Sensor circuit

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