SMC Networks VR51 Series User manual

VR51-TF2Z003EN-A
Page 1 of 3
Instruction Manual
Two Hand Control Valve
Series VR51
The intended use of this product is a logic unit for use in two-hand control
circuits according to ISO 13851 type IIIA. When properly integrated into
a suitable safety system VR51 is compatible for use in systems up to
Category 1 as defined by EN ISO 13849-1:2015.
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
to International Standards (ISO/IEC)*1), 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: Robots and robotic devices - Safety requirements for
industrial robots - Part 1: Robots.
This manual contains essential information for the protection of users and
others from possible injury and/or equipment damage.
•Refer to product catalogue, Operation Manual and Handling
Precautions for SMC Products for additional information.
•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
Caution indicates a hazard with a low level of risk which, if
not avoided, could result in minor or moderate injury.
Warning
Warning indicates a hazard with a medium level of risk
which, if not avoided, could result in death or serious injury.
Danger
Danger indicates a hazard with a high level of risk 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 latestcatalogue information,
with a view to giving due consideration to any possibility of equipment
failure when configuring the equipment.
•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 and 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.
1 Safety Instructions - continued
2) When the product is to be removed, confirm thesafety 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.
•Do not use this product outside of the specifications.
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 or beverages, emergency stop circuits, clutch and brake circuits
in press applications, safety equipment or other applications unsuitable
for the specification described in this document.
3) An application which could have negative effects on people,
property or animals requiringspecial safety analysis outside the scope
of ISO 13851 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
Warning
Special products (-X) might have specifications different from those
shown in this Instruction Manual. Contact SMC for specific drawings.
2.1 Valve specifications
Fluid
Air
Operating pressure [MPa]
0.25 to 1.0
Proof pressure [MPa]
1.5
Ambient and fluid temperature [°C]
-5 to 60 (with no freezing)
Flow
characteristics
C[dm3/(s·bar)]
b
Cv
P(1+2) to A(2)
0.3
-
-
A(2) to R(4)
1.0
0.12
0.25
Maximum operating frequency [cpm]
10
Minimum operating frequency
Once every 30 days
Impact / vibration resistance [m/s2] Note 1)
1000 / 50
Mounting orientation
Unrestricted
Air quality
5 µm filtration or smaller
Environment
Indoor use only
Port size
Metric
Ø6
Inch
Ø1/4
Applicable tube material Note 2)
Nylon, Soft nylon, Polyurethane,
Flame resistant (FR) soft nylon,
FR double layer,
FR double layer polyurethane
Weight [g]
340
Accessory
option
Silencer
Part No.: AN101-01
Bracket
Part No.: VR51B
B10D [cycles]
1,000,000 Note 3)
Mission time [years or cycles]
Maximum 20 years or when the
number of cycles = B10D, whichever
occurs first Note 4)
Table 1.
Note 1) Impact resistance: No malfunction occurred when tested in the axial
direction and right angle to the valve.
Vibration resistance: No malfunction occurred in a round sweep test
between 10 to 150 Hz. The test was performed in the axial direction and
right angles to the valve axis, 20 times for each condition.
Note 2) In the case of soft nylon or polyurethane tubing, use caution when the
maximum operating pressure of the tubing is used.
Note 3) The B10D figure is estimated from SMC life test.
2 Specifications - continued
Note 4) The period of intended use of the product shall not exceed the mission time
(TM). The user is expected to calculate the product T10D according to ISO
13849 based on the stated B10D and operating cycles (nop) of the
application. The period of intended use of the product shall be the shorter
of TMor T10D and neither is a guarantee of the actual life of the product.
After the period of intended use has expired the product shall be replaced
with a new unit.
2.2 Pneumatic symbol
Figure 1.
2.2.1 Typical circuit
Figure 2.
2.2.2 Circuit functional description / timing
•When there is a time delay of less than 0.5 seconds between the two
air signal inputs, the VR51 provides an output signal.
•VR51 output stops when one of the two air signal inputs stops.
•Two simultaneous air signals reset the output.
Figure 3. Output time delay
2.2.3 Output timing delay
•Example for typical piping, the exact delay will depend on the application.
Figure 4. Output timing delay from supply pressure
2 Specifications - continued
2.3 Declaration of conformity, refer to original for translations on
www.smcworld.com
Figure 5. EU DoC VR51-TF1Z181EU
Figure 6. EU DoC VR51-TF1Z181EU
Conditions
1, Piping: Tube: T0604 with I.D. Ø4mm
2, Piping length:
Primary side 1m
Secondary side 3m
3, Connected equipment: 1 Air operated
valve
ORIGINAL INSTRUCTIONS
P1
P2
R(4)
A(2)
The output delay
depends on the
piping arrangement
and the operating
pressure. The
relationship between
output timing delay
and pressure is given
in 2.2.2.
Maximum output timing delay [s]
Supply pressure [MPa]
Output
No
output
Output delay
Two hand control valve (VR51)
Push button
operated valve
Push button
operated valve
Air operated
valve
Cylinder

VR51-TF2Z003EN-A
Page 2 of 3
2 Specifications - continued
Figure 7. UKCA DoC VR51-TF1Z181UK
2.4 Batch code
The batch code indicated in the product label translates to construction
year / month according to the following table (eg. “ZQ = Mar 2021):
Construction
Production batch codes
Year / Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2022
Ao
AP
AQ
AR
AS
AT
AU
AV
AW
AX
Ay
AZ
2023
Bo
BP
BQ
BR
BS
BT
BU
BV
BW
BX
By
BZ
…
…
…
…
…
…
…
…
…
…
…
…
…
2025
Do
DP
DQ
DR
DS
DT
DU
DV
DW
DX
Dy
DZ
Table 2.
3 Installation
3.1 Installation Warning
•Do not install the product unless the safety instructions have been read
and understood.
•Do not install the product if it appears to have been damaged during
transport.
•Do not paint the product.
•Do not remove or cover up warnings or specifications printed or affixed
to the product.
•Ensure sufficient space for maintenance activities. When installing the
products, allow access for maintenance.
•Ensure that the connections of pipework to the unit do not result in a
residual trip hazard to system operators or maintainers.
•If air leakage increases or equipment does not operate to specification,
stop operation.
•Check mounting conditions when air supplies are connected. Initial
function and leakage tests should be performed after installation.
3.2 Environment Warning
•Do not use in an environment where corrosive gases, chemicals, salt
water or steam are present.
3 Installation - continued
•Do not use in an explosive atmosphere.
•Do not expose to direct sunlight. Use a suitable protective cover.
•Do not install in a location subject to vibration or impact in excess of
the product’s specifications.
•Do not mount in a location exposed to radiant heat that would result in
temperatures in excess of the product’s specifications.
•Employ suitable protective measures in locations where there is
contact with oil or welding spatter etc.
•Ambient humidity
When using the valve in environments with low humidity, take
measures to prevent static.
If the humidity rises, take measures to prevent the adhesion of water
droplets on the valve.
Do not use in high humidity environment where condensation occurs.
•Altitude limitation is 1000 m above sea level.
Caution
Avoid using in places where there is splashing oil, coolant or water. In
addition, avoid using where dust may adhere.
3.3 Piping Caution
•Before connecting piping make sure to clean up chips, cutting oil, dust
etc.
•When installing piping or fittings, ensure sealant material does not
enter inside the port. When using seal tape, leave 1 thread exposed
on the end of the pipe/fitting.
•Tighten fittings to the specified tightening torque.
•Connect tubing with a longer length than required to prevent torsion,
stretching or moment loads. Damage of the fittings or flattening, as
well as bursting or releasing of the tubing may occur if the instructions
are not followed.
•Tubing connected to the VR51 should be used at more than its
minimum bend radius. If used under the minimum bend radius,
bending or flattening of the tubing may occur. Refer to catalogue for
additional information.
3.3.1 Piping length for secondary side
To help avoid output timing delay;
•Use the same tubing length and diameter between the VR51 and each
control actuating device: L1=L2, L1’=L2’.
•Use the same control valve type for each input port: V1=V2
•Operate the control valves with the same pressure: P1=P2
Figure 8.
3.4 Lubrication Caution
•SMC products have been lubricated for life at manufacture, and do not
require lubrication in service.
•If a lubricant is used in the system, use turbine oil Class 1 (no additive),
ISO VG32. Once lubricant is used in the system, lubrication must be
continued because the original lubricant applied during manufacturing
will be washed away.
3.5 Air supply Warning
•When there is a large amount of condensate.
Compressed air containing a large amount of water vapour can cause
malfunction of pneumatic equipment such as valves. An air dryer or
water separator should be installed upstream from filters.
•Drain flushing
If condensation in the drain bowl is not emptied on a regular basis, the
bowl will overflow and allow the condensation to enter the compressed
air lines. It causes malfunction of pneumatic equipment.
3 Installation - continued
If the drain bowl is difficult to check and remove, installation of a drain
bowl with an auto drain option is recommended.
•Type of air
Do not use compressed air that contains chemicals, synthetic oils
including organic solvents, salt or corrosive gases, etc., as it can cause
damage or malfunction. Caution
•When extremely dry air is used as the fluid, degradation of the
lubrication properties inside the equipment may occur, resulting in
reduced reliability (or reduced service life) of the equipment. Please
consult with SMC.
•Install an air filter upstream near the valve. Select an air filter with a
filtration size of 5 μm or smaller.
•Take measures to ensure air quality, such as by installing an
aftercooler, air dryer, or water separator.
•If excessive carbon powder is seen, install a mist separator on the
upstream side of the valve.
If excessive carbon dust is generated by the compressor it may adhere
to the inside of a valve and cause it to malfunction.
Warning
•Minimise the distance between the valve and the air supply and
between the valve and the protected system.
•Do not place any devices between the valve and the protected system
that might interfere with the safety function.
•The exhaust ports of the valve should not be left unconnected.
•The exhaust ports of the valves should never be blocked and must be
protected from ingress ofcontamination by asuitable silencer or device
which does not affect the valve function.
3.6 Mounting
•The valve can be mounted using 2 x M5 x 0.8 bolts (thread depth:
5 mm) or using a bracket with 2 x ∅6.5 mm diameter holes. Tightening
torque for M5 thread is 1.5 to 3 N∙m.
•Refer to catalogue for more details.
3.7 One-touch fittings Caution
Refer to catalogue for specific precautions.
4 Settings
4.1 Operating button setup Caution
•Design and prepare the buttons in accordance with instruction
manuals. Install the buttons according to ISO 13851 Safety of
machinery - Two-hand control devices - Functional aspects - Principles
for design and other applicable standards.
•If the operating buttons are incorrectly arranged, an unexpected
motion is likely to occur and safety cannot be maintained.
•Principle precautions (reference only):
- Configure the buttonsso only 2 hand operation is possible, ensure
it is not possible to operate by 1 hand only.
- Configure the buttonsso only 2 hand operation is possible, ensure
it is not possible to operate by forearm(s) or elbow(s).
- Configure the buttonsso only 2 hand operation is possible, ensure
it is not possible to operate by 1 hand and any other part of the
body (knee or hip for example).
•Example of button setup:
- Ensure a safe spacing of the buttons so they cannot be operated
by 1 hand.
Figure 9.
- Install an isolating object between the buttons so they cannot be
operated by 1 hand.
Figure 10.
- Place a cover over both buttons so they cannot be operated by 1
hand.
4 Settings - continued
Figure 11.
5 How to Order
Refer to catalogue for ‘How to Order’.
6 Outline Dimensions
Refer to catalogue for outline dimensions.
7 Maintenance
7.1 General maintenance Caution
•Not following proper maintenance procedures could cause the product
to malfunction and lead to equipment damage.
•If handled improperly, compressed air can be dangerous.
•Maintenance of pneumatic systems should be performed only by
qualified personnel.
•Before performing maintenance, turn off the power supply and be sure
to cut off the supply pressure. Confirm that the air is released to
atmosphere.
•After installation and maintenance, apply operating pressure and
power to the equipment and perform appropriate functional and
leakage tests to make sure the equipment is installed correctly.
•If any electricalconnections are disturbed during maintenance, ensure
they are reconnected correctly and safety checks are carried out as
required to ensure continued compliance with applicable national
regulations.
•Do not make any modification to the product.
•Do not disassemble the product, unless required by installation or
maintenance instructions.
7.2 Periodic testing
•The product should be tested regularly for proper operation of the
safety functions.
•Testing should be conducted at start-up and then at regular intervals
determined by the end user depending on complete system
requirements. Thetest shouldconsist of operation of the safety system
and observation of the following, replace product if necessary:
- There are no scratches, dents, corrosion, loose screws, or damage
to the valve body.
- The one-touch fitting is not damaged.
- The tube should not be kinked, crushed or damaged.
- The tube should not be hardened, deteriorated or softened.
- No air leaks.
- The air pressure is in the range of 0.25 MPa to 1 MPa.
- Operate the two operating devices installed on the ‘Input’ side at
the same time and ensure that there is output from port A of VR51.
- The operation timings of the two operating devices installed on the
‘Input’ side are shifted by 0.5 seconds or more, and there is no
output from port A of VR51.
- When one of the operating devices is cancelled while there is
output from port A of VR51, there is no output from port A.
7.2 Maintainable parts Warning
There are no replaceable parts.
8 Limitations of Use
Warning
•The system designer should determine the effect of the possible failure
modes of the product on the system.
•VR51 only offers protection for the person operating it.
8.1 Limited warranty and disclaimer/compliance requirements
Refer to Handling Precautions for SMC Products.
8.2 Type of fluid and pneumatic pressure
•Do not use fluids other than those specified. The only fluid that can be
used is air.
Output
Supply port: P1(11)
Supply port: P2(12)
Exhaust port R(4)
Output port A(2)
Flame resistant One-
touch fitting: ∅6, ∅1/4
Flame resistant One-touch
fitting: ∅6, ∅1/4
Flame resistant One-touch
fitting: ∅6, ∅1/4
With silencer
(order separately,
see Table 1.)
P2
P1
V2
V1

VR51-TF2Z003EN-A
Page 3 of 3
8 Limitations of Use - continued
•Do not use the product with a pressure under 0.25 MPa. The time lag
for operating the VR51 is different depending on the operating
pressure. The higher the operating pressure, the shorter the time lag,
and vice versa. If used under 0.25 MPa, an output will be produced;
however, safety is not likely to be maintained, even though the time lag
may exceed 0.5 seconds. Caution
8.3 Low temperature operation
In the case of using in low temperature, take measures not to freeze the
drainage or moisture.
8.4 Trouble shooting
Symptom
Possible fault
Action Note)
Cylinder does
not operate
Supply pressure is too low
Check supply pressure
Time difference between P1
and P2 is more than 0.5 s.
Check & ensure P1 and P2 is
supplied within 0.5 s time
difference.
Start-up valves (push button
operated) malfunction.
Check if valves are operating
correctly.
Control valve faulty
Refer to 9 Product Failure Modes.
Start-up valve is 2 port
Replace 2 port with 3 port valve
Piping lengths P1 & P2 are
not same
Ensure P1 and P2 are same length
Output does
not turn off
Start-up valve is 2 port
Replace 2 port with 3 port valve
Table 3.
Note: If there are doubts about the performance of the unit, replace the whole unit.
8.5 Limitations Caution
•This product is CE/UKCA marked as a safety component as defined
under the Machinery Directive 2006/42/EC / The Supply of Machinery
(safety) Regulations 2008. For details, please refer to the Declaration
of Conformity supplied with the product.
•The valve may only be used to provide the stated safety function as a
logic unit for use in two-hand control circuits. The valve can only
perform as a safety component when properly installed in a system
conforming to the appropriate safety standards.
•Any such use must be within the specified limits and application
conditions for the product.
•In order to meet a required performance level as defined by the
appropriate safety standard, the user must provide all the other
necessary components to complete function of the safety system.
•The user is responsible for the specification, design, implementation,
validation and maintenance of the safety system.
9 Product Failure Modes
Warning
Failure mode
Cause
Action
Malfunction allowing output by
one-handed operation.
Ingress of foreign matter
Please
replace
the
product.
Malfunction allowing output 0.5
seconds or longer after
operation.
Ingress of foreign matter
Loss of lubrication
Sticking after long period of inactivity
Leakage to exhaust port
preventing output.
Ingress of foreign matter
Loss of lubrication
Malfunction delaying exhaust.
Ingress of foreign matter
Table 4.
10 Product Disposal
This product shall not be disposed of as municipal waste. Check your
local regulations and guidelines to dispose this product correctly, in order
to reduce the impact on human health and the environment.
11 Contacts
Refer to www.smcworld.com or www.smc.eu for your local
distributor/importer.
URL : https:// www.smcworld.com (Global) https:// www.smc.eu (Europe)
SMC Corporation, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, Japan
Specifications are subject to change without prior notice from the manufacturer.
© 2022 SMC Corporation All Rights Reserved.
Template DKP50047-F-085M