Installation and Maintenance Manual
IS3000 Series Pressure Switch
This Manual should be read in conjunction with the current product catalogue
For future reference, please keep this manual in a safe place
Safety Instructions
These safety instructions are intended to prevent a hazardous situa-
tion and/or equipment damage.These instructions indicate the level
of potential hazard by label of “Caution”, “Warning” or “Danger”.
To ensure safety, be sure to observe ISO4414
(Note1)
, JIS B 8370
(Note2)
and other safety practices.
Note 1: ISO 4414: Pneumatic fluid power – Recommendations for the
application of equipment to transmission and control systems.
Note 2: JIS B 8370: Pneumatic system axiom.
CAUTION :
Operator error could result in injury or
equipment damage.
WARNING:
Operator error could result in serious
injury or loss of life.
DANGER :
In extreme conditions, there is a
possible result of serious injury or loss of life.
WARNING
1. The compatibility of pneumatic equipment is the respon-
sibility of the person who designs the pneumatic system
or decides its specifications.
Since the products specified here are used in various operating
conditions, their compatibility for the specific pneumatic system
must be based on specifications or after analysis and/or tests to
meet your specific requirements.
2. Only trained personnel should operate pneumatically
operated machinery and equipment.
Compressed air can be dangerous if an operator is unfamiliar
with it. Assembly, handling or repair of pneumatic systems should
be performed by trained and experienced operators.
3. Do not service machinery/equipment or attempt to
remove component until safety is confirmed.
1) Inspection and maintenance of machinery/equipment should
only be performed after confirmation of safe locked-out
control positions.
2) When equipment is to be removed, confirm the safety process
as mentioned above. Switch off air and electrical supplies and
exhaust all residual compressed air in the system.
3) Before machinery/equipment is re-started, ensure all safety
measures to prevent sudden movement of cylinders etc.
(Bleed air into the system gradually to create back-pressure,
i.e. incorporate a soft-start valve).
4. Contact SMC if the product is to be used in any of the
following conditions:
1) Conditions and environments beyond the given specifica-
tions, or if product is used outdoors.
2) Installations in conjunction with atomic energy, railway, air
navigation, vehicles, medical equipment, food and beverage,
recreation equipment, emergency stop circuits, press
applications, or safety equipment.
3) An application which has the possibility of having negative
effects on people, property, or animals, requiring special
safety analysis.
CAUTION
Ensure that the air supply system is filtered to 5 micron.
Specifications
Fluid
Air
Proof pressure
1 MPa (10.2 kgf/cm
2
)
Max. operating pressure
0.8 MPa (8.2 kgf/cm
2
)
Pressure adjustable range
0.1 to 0.7 MPa (1 to 7.1 kgf/cm
2
)
Ambient and fluid temperature
-5 to +60°C (No freezing)
Contact configuration
1ab
Hysteresis
0.05 MPa (0.51 kgf/cm
2
) or less
Repeatability
±0.05MPa {±0.5 kgf/cm
2
}
Weight
0.15 kg
Microswitch rating
Model
IS3*00
IS3*10
Load
Non-inductive load (A)
Inductive load (A)
Non-inductive
load (A)
Resistance load
Lamp load
Inductive load
Motor load
Motor load
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
N.C.
N.O.
AC125
5
1.5
0.7
3
2.5
1.3
0.1
AC250
3
1
0.5
2
1.5
0.8
-
DC30
4
2
3
3
0.1
DC125
0.4
0.05
0.4
0.05
-
Installation
WARNING
1. Ensure all air and power supplies are ISOLATED before
commencing installation.
2. DO NOT install this product in an explosive atmosphere.
3. Protect from oil and water splashes.
4. If it is intended to energise this product for extended periods of
time please consult SMC.
5. Protect the air supply from freezing.
6. Operate within the specified pressure and temperature ranges.
7. DO NOT subject the unit to impact or vibration.
8. DO NOT install in environments containing corrosive gasses.
Wiring (Fig 1)
Ensure that the microswitch is wired in accordance with the diagram
shown in Fig 1.
Wiring indicator lamp OFF (pressure rise) (Fig 2)
To wire the indicator lamp to go “OFF” on detecting a pressure rise,
both the A and B contacts must be wired in accordance with the
diagram shown in Fig 2.
Wiring indicator lamp ON (pressure rise) (Fig 3)
To wire the indicator lamp to come “0N” on detecting a pressure rise,
only the B contact is wired in accordance with the diagram shown in
Fig 3.
CAUTION
Two adhesive nameplates are supplied to indicate the above
situations, place the appropriate label on the outside of the unit in a
highly VISIBLE position.
There are (+) AND (-) terminals for connecting a 24VDC power supply.
The red lead wire connects to the (+) terminal and the black lead wire
to the (-) terminal. A LED is fitted to the 24VDC supply. The LEAKAGE
current is 3mA.
Operating a PLC using leakage current (Fig 4)
Directly connect the LED to the power supply as shown in Fig 4.
Internal resistance of the lamp is L1: 33k
Ω
, L2: 100k
Ω
, and L5:
8.2k
Ω
.
Adjustment
The pressure can be set by turning the adjusting screw, using a small
bladed screwdriver.
Maintenance
WARNING
Before carrying out any maintenance work ensure all air and power
supplies are ISOLATED.
Please consult SMC before dismantling this product.
074A/Eng
When you enquire about the product, please contact the following
SMC Corporation
:
ENGLAND
Phone 01908-563888
TURKEY
Phone 212-2211512
ITALY
Phone 02-92711
GERMANY
Phone 6103-402-0
HOLLAND
Phone 020-5318888
FRANCE
Phone 01-64-76-10-00
SWITZERLAND
Phone 052-396 31 31
SWEDEN
Phone 08-603 07 00
SPAIN
Phone 945-184100
AUSTRIA
Phone 02262-62-280
Phone 902-255255
IRELAND
Phone 01-4501822
GREECE
Phone 01-3426076
DENMARK
Phone 70 25 29 00
FINLAND
Phone 09-68 10 21
NORWAY
Phone 67-12 90 20
BELGIUM
Phone 03-3551464
POLAND
Phone 48-22-6131847
PORTUGAL
Phone 02-610 8922
Normally
closed/
open
Rated
voltage (V)
Fig 1
Fig 2
Neon lamp lights OFF
by pressure increase
Fig 3
Fig 4
Neon lamp lights ON
by pressure increase
Model
Piping method
Microswitch type
Microswitch min.
applicable load
IS3000-02
1/4 screw joint type
Standard type
5 VDC, 160 mA
IS3000-02L*
IS3100
Gasket mounted type
IS3100-L*
IS3010-02
1/4 screw joint type
Micro load type
5 VDC, 1mA
IS3010-02L*
IS3110
Gasket mounted type
IS3110-LX
For additional information please contact your local SMC office, see below:
Models
