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INSTRUCTION MANUAL
Inductive Proximity Sensor
Small
GX Series
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.
3
I/O CIRCUIT DIAGRAMS
٨ GX-3Sغ, GX-4Sغ, GX-5Mغ
Color code
(Brown) +V
(Black) Output
(Note)
50mA max.
(Blue) 0V
Load
Sensor circuit
D
Z
D
Tr
+
-
12 to 24V DC
r10%
٨٨Never use this product as a sensing device for personnel protection.
In case of using sensing devices for personnel protection, use products which meet
WARNING
1
Item
Max. operation distance (Note 2)
Stable sensing range (Note 2)
Standard sensing object
Supply voltage
Current consumption 15mA or less
Output
Max. response frequency
Ambient humidity
Material
Cable
Weight (Note 4) 30g approx. 55g approx. 30g approx. 60g approx.
Accessories
Notes: 1)
standards, such as OSHA, ANSI or IEC etc., for personnel protection applicable in
each region or country.
SPECIFICATIONS
Type
Normally closed
Model No.
(Note 1)
Normally open
Short-circuit protection
The model No. with '-R' stands for the flexible cable type.
(e.g.) As for the flexible cable type of GX-3SB 'GX-3SB-R'
The model No. with suffix '-C5' stands for the 5m cable length type.
(e.g.) As for the 5m cable length type of GX-3SB 'GX-3SB-C5'
2)
The maximum operation distance stands for the maximum distance for which the sensor can detect the standard sensing object.
The stable sensing range stands for the sensing range for which the sensor can stably detect the standard sensing object even if
there is an ambient temperature drift and/or supply voltage fluctuation.
3)
The maximum sink current varies depending on the ambient temperature. Refer to ' I/O CIRCUIT DIAGRAMS'.
4)
The weight of the threaded type includes the weight of two nuts and one toothed lock washer.
GX-3S
GX-3SB
Iron sheet 55t1mm
<GX-3Sš, GX-4Sš, GX-5Mš>
NPN open-collector transistor
Maximum sink current: 50mA
Applied voltage: 30V DC or less (between output and 0V)
Residual voltage: 0.4V or less (at 50mA sink current)
35 to 95% RH, Storage: 35 to 95% RH
Enclosure: Stainless steel (SUS304)
Resin part: TPX
0.08mm
resistant cabtyre cable, 3m long
MS-SS3 (Sensor
mounting bracket): 1 pc.
MS-SS3-2
(C bracket): 1 pc.
Non-threaded type
GX-4S
0.8mmr15% 1mmr15% 0.8mmr15% 1mmr15% 2mmr15%
0to0.6mm 0to0.8mm 0to0.6mm 0to0.8mm 0to1.6mm
12 to 24V DCr10%
Ripple P-P 10% or less
2
3-core oil, heat and cold
GX-4SB
㧙㧙
1kHz 1kHz 500Hz1.5kHz
㧙
Shielded type
GX-5S
GX-5SB
Iron sheet 66t1mm Iron sheet 55t1mm Iron sheet 88t1mm
10 to 30V DC
Ripple P-P 10% or less
Incorporated
Red LED (lights up when the output is ON)Operation indicator
-25to+70, Storage: -25 to +80Ambient temperature
35 to 85% RH
Storage: 35 to 95% RH
Enclosure: Brass
(Nickel plated)
Resin part: ABS
0.14mm23-core oil,
heat and cold resistant
cabtyre cable, 3m long
MS-SS5 (Sensor
mounting bracket):
1pc.
GX-5M
GX-5MB
12 to 24V DCr10%
Ripple P-P 10% or less
<GX-5Sš, GX-8Mš, GX-8MLš>
NPN open-collector transistor
Maximum sink current: 200mA (Note 3)
Applied voltage: 30V DC or less (between output and 0V)
Residual voltage: 1.5V or less (at 200mA sink current)
IP67 (IEC)Protection
35 to 95% RH
Storage: 35 to 95% RH
Enclosure: Brass
(Nickel plated)
Resin part: TPX
2
3-core oil,
0.08mm
heat and cold resistant
cabtyre cable, 3m long
Nut: 2 pcs., Toothed lock washer: 1 pc.
3
GX-8M
GX-8MB
10 to 30V DC
Ripple P-P 10% or less
0.4V or less (at 50mA sink current)
35 to 85% RH, Storage: 35 to 95% RH
Enclosure: Brass (Nickel plated)
Resin part: ABS
0.14mm23-core oil, heat and cold
resistant cabtyre cable, 3m long
Non-shielded type
Iron sheet 1212t1mm
Incorporated
Threaded typeThreaded type
GX-8ML
GX-8MLB
Internal circuit Users' circuit
Symbols...D
Note: GX-3Sغ, GX-4Sغ and GX-5Mغ do not incorporate a short-
Reverse supply polarity protection diode
:
D
Z
Surge absorption zener diode
:
Tr
NPN output transistor
:
circuit protection at the output. Do not connect them directly to
a power supply or a capacitive load.
٨ GX-5Sغ, GX-8Mغ, GX-8MLغ
D
Tr
Sensor circuit
Internal circuit Users' circuit
Symbols...D
Note: The maximum sink current varies depending on the ambient
If a capacitor of 1ǴF or more is connected between 0V
and output or between +V and output, connect a 100ǡ
resistor in series as shown below.
Without the resistor, the short-circuit protection is activated by the change or discharge current of the capacitor, so that it results in delaying the response whenever
the sensor switches. The connected resistor solves this
problem.
:
D
Z
:
Tr
:
temperature.
200
100
Max. sink current
(mA)
0
-25 +55 +70
Internal circuit Users' circuit
Color code
(Brown) +V
oad
L
tput
u
+
-
+V
1ǴFormore
Signal
1ǴFormore
0V
(Black) Output
200mA max.(Note)
Z
D
(Blue) 0V
Reverse supply polarity protection diode
Surge absorption zener diode
NPN output transistor
Ambient temperature ()
o
(
wn) +V
Br
k) O
(Bla
c
100ǡ
(Blue)0V
10 to 30V DC
2
CAUTIONS
٨
Make sure that the power supply is off while
wiring.
٨
Take care that wrong wiring will damage the
sensor.
٨
Verify that the supply voltage variation is
within the rating.
٨
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.
٨
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.
٨
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.
٨
Extension up to total 100m is possible with a
2
,ormore(GX-8MLغ: 0.14mm2,or
0.3mm
more), cable.
٨
Do not use during the initial transient time
(10ms) after the power supply is switched on.
٨
GX-3Sغ, GX-4Sغ and GX-5Mغ do not incor-
porate a short-circuit protection at the output.
٨
Do not connect them directly to a power supply
or a capacitive load.
٨
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.
٨
Make sure that the sensing end is not covered
with metal dust, scrap or spatter. It will result in
malfunction.
٨
Make sure that stress by forcible bend or pulling
is not applied directly to the sensor cable joint.
٨
Since the cable end is not waterproof, do not
use the sensor in the application where water
may seep in from the cable end.
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4
MOUNTING
When mounting the sensor, if tightening torque
exceeding the soecified is applued, the sensor
may be damaged.
٨ The tightening torque should be under the value
given below.
Mounting with a set screw
<Shielded threaded type>
٨ Tighten the set screw on the flat surface of the
sensor without applying excessive force. Make
sure to use a set screw with a cup-point end.
Set screw (M4
or less) (Note)
Note: To fasten GX-5Mغ,useaM3or
A
less set screw.
Model No.
Set screw tightening
position A (mm)
5to10 0.29N㨯mGX-5Mغ
8to22 0.29N㨯mGX-8Mغ
Tightening
torque
<Non-threaded type and non-shielded threaded type>
Set screw
(M4)
B
C
Model No.
When using
the C bracket
Note:
Mount such that the nuts do not
protrude from the threaded position.
B
(mm)
5to10
5to10
8to20
13 to 22
C
(mm)
3
3
5
10
Tightening
torque
0.29N㨯mGX-3Sغ
0.58N㨯m
0.58N㨯mGX-4Sغ
0.29N㨯mGX-5Sغ
0.29N㨯mGX-8MLغ
٨ To fasten GX-3Sغ and GX-4Sغ,useaM3or
less set screw and tighten it from a direction
perpendicular to the operation indicator.
Operation
indicator
Set screw
Good
Operation
indicator
No good
Operation
indicator
٨ When using the C bracket, place it on the
sensor at a distance of 3mm or more from the
sensor end.
C bracket
3mmormore
To fasten the non-shielded threaded type, tighten
٨
the set screw on the flat surface on the sensor.
Mounting with nut
Mount such that the nuts do not protrude from
the threaded portion.
<Shielded threaded type>
D
Mounting plate
Attached toothed lock washer
(2 pcs. attached for '-R' type only)
Model No.
GX-5Mغ
GX-8Mغ
GX-8MLغ
Note: Mount such that the nuts do not protrude from the threaded
portion.
٨
Caution with GX-8Mغ and GX-8MLغ
Dimension D
2 to 3mm 0.49N㨯m
3mm or more 1.47N㨯m
3 to 11mm 1.47N㨯m
11mm or more 3.43N㨯m
9 to 11mm 0.98N㨯m
11mm or more 3.43N㨯m
<Non-shielded threaded type>
D
Attached toothed
lock washer
Mounting plate
Tightening torque
The root truncation of the threads is shallow
owing to strengthening of the sensors against
tightening.
When tapping holes on equipment to fix the
sensors, the prepared holes must be Ǿ7.2mm
or more with GX-8Mغ and GX-8MLغ
٨Distance from surrounding metal
As metal around the sensor may affect the
sensing performance, pay attention to the following points.
Influence of surrounding metal
The surrounding metal will affect the sensing
performance. Keep the minimum distance
specified in the table below.
Background metal
Model No. E (mm)
E
GX-3Sغ
GX-4Sغ
GX-5Sغ
GX-5Mغ
GX-8Mغ
GX-8MLغ
3
3
4
3
4
8
Embedding of the sensor in metal
Sensing range may decrease if the sensor is
completely embedded in metal. Especially for
the non-threaded type and the non-shielded
type, keep the minimum distance specified in
the table below.
F
G
Metal
Model No.
GX-3Sغ
GX-4Sغ
GX-5Sغ
GX-8MLغ
F (mm)
Ǿ12
Ǿ12
Ǿ15.4
Ǿ30
G (mm)
3
3
5
10
٨Mutual 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.
Face to face mounting
H
Parallel mounting
J
Model No.
GX-3Sغ
GX-4Sغ
GX-5Sغ
GX-5Mغ
GX-8Mغ
H(mm)
16
16
20
10
20
J (mm)
16
16
15
10
15
3050GX-8MLغ
٨Sensing 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.
Correction coefficient
Model No.
Metal
Iron
Stainless steel
(SUS304)
Brass
Aluminum
Note: The sensing range also changes if the sensing object is
plated.
GX-3Sغ
GX-4Sغ
111
0.65 approx.
0.36 approx.
0.30 approx.
GX-5Sغ
GX-8Mغ
GX-8MLغ
0.70 approx.
0.40 approx.
0.35 approx.
GX-5Mغ
0.83 approx.
0.61 approx.
0.58 approx.
Sensor
Tapping holes
SUNX Limited
http://www.sunx.co.jp/
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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