VNA-TFM91-A_EN
ORIGINAL INSTRUCTIONS
Refer to Declaration of
Conformity for relevant
Directives
Instruction Manual
2 Port Valve for Compressed Air and Air-
hydro Circuit Control
Series VNA
The intended use of this product is to control pneumatic systems or air-
hydro circuits. A balance poppet enables air to flow forward or
backward.
Refer to How to order for CE marked and/or validated components.
Validated according to ISO13849, see section 2.
1 Safety Instructions
These safety instructions are intended to prevent hazardous situations
and/or equipment damage. These instructions indicate the level of
potential hazard with the labels of "Caution", "Warning" or "Danger".
They are all important notes for safety and must be followed in addition
*1)
to International Standards (ISO/IEC)
, and other safety regulations.
*1)
ISO 4414: Pneumatic fluid power - - General rules relating to
systems.
ISO 4413: Hydraulic fluid power - - General rules relating to
systems.
IEC 60204-1: Safety of machinery - -Electrical equipment of
machines. (Part 1: General requirements)
ISO 10218-1: Manipulating industrial robots -Safety. etc.
This manual contains essential information for the protection of users
and others from possible injury and/or equipment damage.
• Read this manual before using the product, to ensure correct
handling, and read the manuals of related apparatus before use.
• Keep this manual in a safe place for future reference.
• To ensure safety of personnel and equipment the safety instructions
in this manual must be observed, along with other relevant safety
practices.
Caution indicates a hazard with a low level of risk
Caution
which, if not avoided, could result in minor or
moderate injury.
Warning indicates a hazard with a medium level
Warning
of risk which, if not avoided, could result in death
or serious injury.
Danger indicates a hazard with a high level of risk
Danger
which, if not avoided, will result in death or
serious injury.
Warning
• The compatibility of the product is the responsibility of the
person who designs the equipment or decides its specifications.
• Since the product specified here is used under various operating
conditions, its compatibility with specific equipment must be decided
by the person who designs the equipment or decides its
specifications based on necessary analysis and test results. The
expected performance and safety assurance of the equipment will be
the responsibility of the person who has determined its compatibility
with the product. This person should also continuously review all
specifications of the product referring to its latest catalogue
information, with a view to giving due consideration to any possibility
of equipment failure when configuring the equipment.
1 Safety Instructions - continued
• Only personnel with appropriate training should operate
machinery and equipment.
The product specified here may become unsafe if handled
incorrectly.
The assembly, operation and maintenance of machines or equipment
including our products must be performed by an operator who is
appropriately trained and experienced.
• Do
not
service
or
attempt
to
remove
product
machinery/equipment until safety is confirmed.
1) The inspection and maintenance of machinery/equipment should
only be performed after measures to prevent falling or runaway of the
driven objects have been confirmed.
2) When the product is to be removed, confirm that the safety
measures as mentioned above are implemented and the power from
any appropriate source is cut, and read and understand the specific
product precautions of all relevant products carefully.
3) Before machinery/equipment is restarted, take measures to
prevent unexpected operation and malfunction.
• Contact SMC beforehand and take special consideration of
safety measures if the product is to be used in any of the
following conditions.
1) Conditions and environments outside of the given specifications, or
use outdoors or in a place exposed to direct sunlight.
2) Installation on equipment in conjunction with atomic energy,
railways, air navigation, space, shipping, vehicles, military, medical
treatment, combustions and recreation, or equipment in contact with
food and beverages, emergency stop circuits, clutch and brake
circuits in press applications, safety equipment or other applications
unsuitable for the standard specification described in the product
catalogue.
3) An application which could have negative effects on people,
property, or animals requiring special safety analysis outside the
scope of ISO 13849 described in this document.
4) Use in an interlock circuit, which requires the provision of double
interlock for possible failure by using a mechanical protective
function, and periodical checks to confirm proper operation.
• Always ensure compliance with relevant safety laws and
standards.
All electrical work must be carried out in a safe manner by a qualified
person in compliance with applicable national regulations.
Caution
• The product is provided for use in manufacturing industries.
The product herein described is basically provided for peaceful use in
manufacturing industries.
If considering using the product in other industries, consult SMC
beforehand and exchange specifications or a contract if necessary.
If anything is unclear, contact your nearest sales branch.
2 Specifications
2.1 Valve Specifications
Fluid
See Table 2
Note 1)
VNA
A
-5 to 60 ° C
Fluid
Note 1)
VNA
B/
-5 to 99 ° C
(Only air
temperature
VNA
C
operated)
-5 to 50 ° C (Air operated: 60° C)
Ambient temperature
Note 1)
Proof pressure
1.5 MPa
Min. operating pressure
0
Max. operating pressure
1 MPa
Pressure range
0.2 to 0.7 MPa
External pilot
Lubrication
Not required (See also 3.4)
air
Temperature
-5 to 50 ° C (Air operated: 60 ° C)
Flow
See Table 3, Table 4
Filtration
5 µm filtration or smaller
Weight
See Table 5
2
Vibration resistance
30 m/s
2
Impact resistance
150 m/s
Min. operating frequency
1 cycle/30 days
Max. operating frequency
1 cycle/1 second
2 Specifications - continued
Note 3)
Mounting orientation
unrestricted
Note 4)
B
2 million cycles
10
Note 4)
B
4 million cycles
10D
Complies with the basic and well-tried
Standards
safety principles of ISO 13849-2:2012
Table 1
Notes:
Note 1) No freezing
and
Note 2) Lubrication is not allowed in case of seal material EPR.
Note 3) For external pilot solenoid, it is recommended that the pilot
solenoid valve be oriented either vertically upward or
horizontally.
Note 4) Under SMC test conditions. The B
10
SMC life tests. The B
figure is derived from B
10D
assumption in EN ISO 13849-1:2015 Annex C. Contact SMC for
details.
2.2 Pilot Solenoid Valve Specifications
Port Size
6A to 25A
SF4-
Pilot solenoid valve
SF4-
-23-Q
Grommet,
Grommet
Electrical entry
terminal
Conduit terminal
DIN terminal
AC (50/60 Hz)
Coil rated
Other voltage (Semi-standard)
voltage (V)
DC
24 V, Other voltage (Semi-standard)
Allowable voltage fluctuation
-15% to +10% of rated voltage
Coil insulation
Class B or equivalent (130 ° C)
35 ° C or less
(When rated
Temperature rise
voltage is
applied)
5.6 VA (50 Hz),
Inrush
5.0 VA (60 Hz)
Apparent
AC
power
3.4 VA (50 Hz),
Holding
2.3 VA (60 Hz)
1.8 W (without
Power
DC
light),
consumption
2 W (with light)
Non-locking
push type
Manual override
Other (Semi-
standard)
Table 2
Note: For validated types refer to section 5 'How to order.
2.3 Applicable Fluids
VNA
A
VNA
B
Model
(Valve material:
(Valve material:
NBR seal)
FKM seal)
Air (Standard, Dry)
Carbon dioxide
Argon
(CO
) (Less than
2
Helium
Fluid
0.7 MPa)
Note 1)
Turbine oil
Nitrogen gas (N
)
2
Hydraulic fluid
Note 1)
Turbine oil
,
Hydraulic fluid
Table 2
2
Note 1)
Kinematic viscosity 40 to 100 mm
/s
Caution
This product cannot be used for water application.
2.4 Flow characteristics
Note 2)
Measured by air
Measured by water
Model
3
C [dm
/(bar·s)]
b
VNA1
-6A
3.5
0.35
VNA1
-8A
5.9
0.24
VNA1
-10A
7.9
0.16
VNA2
-10A
16
0.35
VNA2
-15A
23
0.25
VNA3
-20A
34
0.16
Table 3
Note) This product cannot be used for water application.
2 Specifications - continued
Model
VNA4
-25A
VNA5
-32A
VNA6
-40A
VNA7
-50A
2.5 Weight (kg)
Model
VNA1
-6A
VNA1
-8A
VNA1
-10A
VNA2
-10A
figure is estimated from
VNA2
-15A
using the
10
VNA3
-20A
VNA4
-25A
VNA5
-32A
VNA6
-40A
VNA7
-50A
32A to 50A
-23
VO307-
1
1
2.6 Port size
VO307-
-Q
1
Grommet, DIN
VNA Series
terminal
Threaded Fitting size
100 V, 200 V
VNA1
- 6A
VNA1
- 8A
VNA1
- 10A
VNA2
- 10A
VNA2
- 15A
50 ° C or less
VNA3
- 20A
(When rated
VNA4
- 25A
voltage is
VNA5
- 32A
applied)
VNA6
- 40A
12.7 VA (50 Hz),
VNA7
- 50A
10.7 (60 Hz)
7.6 VA (50 Hz),
2.7 Symbols
5.4 VA (60 Hz)
Valve
N.C.
4 W (without
type
light),
Normally closed
Style
4.2 W (with light)
VNA 01
Non-locking
push type
Air
operated
VNA
C
(Valve material:
EPR seal)
VNA 11
Carbon dioxide
(CO
) (0.7 MPa or
2
,
more)
External
pilot
solenoid
Note)
-6
2
Cv
Av x 10
m
0.88
25
Special products might have specifications different from those shown
1.5
41
in this section. Contact SMC for specific drawings. These drawings will
1.9
51
give the appropriate specification details and compliance with the safety
3.8
110
principles of ISO 13849, if applicable.
4.8
130
7.5
210
2
Cv
Effective area (mm
)
12
220
18
320
28
500
43
770
Table 4
Air operated
External pilot solenoid
0.1
0.2
0.3
0.4
0.5
0.6
0.8
0.9
1.3
1.4
2.1
2.2
3.1
3.2
Table 5
Port 12 (P1)
Port 1(A), 2(B)
Port 10 (P2)
(If available)
Threaded Fitting size
(Rc, G, NPT or
(Rc)
NPTF)
1/8
1/8
1/4
1/8
3/8
1/8
3/8
1/8
1/2
1/8
3/4
1/8
1
1/8
1 1/4
1/8
1 1/2
1/4
2
1/4
Table 6
N.O.
C.O.
Normally open
Double acting
VNA 02
VNA 03
VNA 12
Table 7
Caution
Page 1 of 5
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