Festool MS6-SV-...-D-10V24 User manual

en Operating
instructions
8043786
1702a
[8043788]
Soft-start/quick exhaust valve
MS6-SV-...-D-10V24

MS6-SV-...-D-10V24
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Original instructions
Identification of hazards and instructions on how to prevent them:
Danger
Immediate dangers which can lead to death or serious injuries
Warning
Hazards that can cause death or serious injuries
Caution
Hazards that can cause minor injuries
Other symbols:
Note
Material damage or loss of function
Recommendations, tips, references to other documentation
Essential or useful accessories
Information on environmentally sound usage
Text designations:
 Activities that may be carried out in any order
1. Activities that should be carried out in the order stated
– General lists
èResult of an action/References to more detailed information

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Table of contents
1 About this document 5......................................................
2 Safety 5..................................................................
2.1 General safety information 5..................................................
2.2 Intended usage 6...........................................................
2.3 Foreseeable misuse 6.......................................................
2.4 Specified directives and standards 7...........................................
2.5 Safety function in accordance with EN ISO 13849 7................................
3 Requirements for product use 8...............................................
3.1 Training of skilled personnel 8.................................................
3.2 Common cause failures (CCF) 8................................................
3.3 PFHd value 9..............................................................
3.4 Range of applications and certifications 10.......................................
3.5 Service 10.................................................................
4 Control sections and connections 11............................................
5 Application and function 12...................................................
5.1 Application 12..............................................................
5.2 Designations 12.............................................................
5.3 Switching logic 13...........................................................
5.4 Function 13.................................................................
5.5 Switching characteristics 14...................................................
5.6 Switch-through pressure 15...................................................
6 Recommendation for activation and diagnostics 16................................
7 Installation 17..............................................................
7.1 Mechanical installation 17.....................................................
7.2 Pneumatic installation 20.....................................................
7.2.1 Port 1 and 2 20.....................................................
7.2.2 Port 3 20..........................................................
7.3 Electrical installation 21.......................................................

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8 Commissioning 23...........................................................
9 Operation 23...............................................................
10 Maintenance 23.............................................................
11 Disassembly 24.............................................................
12 Disposal 24................................................................
13 Accessories and spare parts 24................................................
14 Fault clearance 25...........................................................
15 Technical data 26............................................................
15.1 Safety characteristics 26......................................................
15.2 General data 26.............................................................
15.3 Electrical data 28............................................................
15.4 Filling flow 29...............................................................
15.5 Exhaust time 30.............................................................

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1 About this document
For all available product documentation èwww.festo.com/pk
2 Safety
2.1 General safety information
Note
Failure of the safety function
Common cause failures, subsequently called CCF, cause the failure of the safety func
tion, since in this case both channels in a two-channel system fail simultaneously.
If measures to control the CCFs are not observed, the safety function of the soft-start/
quick exhaust valve can be impaired.
 Make sure that the described measures for managing the CCFs are observed
(è3.2 Common cause failures (CCF) and 15.1 Safety characteristics).
Note
Failure of the safety function
Failure to observe the technical data can result in the failure of the safety function.
 Observe the technical data (è15 Technical data).

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2.2 Intended usage
The MS6-SV-...-D-10V24 hereafter called the MS6-SV-D, is an electro-pneumatic soft-start/quick
exhaust valve designed in accordance with EN ISO 4414. The MS6-SV-D is intended for the following
purposes:
– Pressure release and pressure switch-on in higher levels in accordance with EN ISO 13849-1
– Gradual pressure build-up in pneumatic piping systems and terminals in industry
The MS6-SV-D has two safety functions:
– pressure release
– protection from unexpected start-up (non-switching)
The MS6-SV-D is designed to change from the normal position to the switching position when both
coils are energised simultaneously. The normal position is achieved by switching off both coils.
The MS6-SV-D is intended for installation in machines or automation technology systems and must be
used exclusively as follows:
– in an industrial environment
– within the limits defined by the technical data (è15 Technical data)
– in its original condition, without unauthorised modifications
– in perfect technical condition
– in accordance with the specifications of these operating instructions
2.3 Foreseeable misuse
The following foreseeable misuses are among those not approved as intended use:
– use outdoors
– use as control for coupling/braking combinations on mechanical presses
– bypassing of the safety function
– use in reversible operation (using supply air instead of exhaust air, and vice versa)
– vacuum operation
Note
In the event of damage caused by unauthorised manipulation or use other than that
intended, the guarantee is invalidated and the manufacturer is not liable for damages.

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2.4 Specified directives and standards
Version status
2006/42/EC
EN 1037 + A1:2008-04
EN ISO 4414:2010-11
EN ISO 13849-1:2015-12
EN ISO 13849-2:2012-10
Tab. 1 Standards/directives specified in the document
2.5 Safety function in accordance with EN ISO 13849
The MS6-SV-D has features that permit achievement of a performance level e for the following safety
functions:
– pressure release
– protection from unexpected start-up (non-switching) in accordance with EN 1037.

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3 Requirements for product use
 Make the operating instructions available to the following persons:
– design engineer of the machine or system
– installer of the machine or system
– maintenance staff of the machine or system
 Keep these operating instructions for the entire product lifecycle.
 Take into consideration the legal regulations applicable for the location as well as the following
points:
– Regulations and standards
– Regulations of the testing organisations and insurers
– National specifications
3.1 Training of skilled personnel
The following steps must only be carried out by qualified specialists:
– Installation
– Installation
– Commissioning
– Maintenance
– Repair
The qualified personnel must be familiar with the following points:
– electrical and pneumatic control technology
– applicable regulations for operating safety engineering systems
– applicable regulations for accident prevention and occupational safety
– documentation for the product
Note
Work on safety-related systems may only be carried out by qualified personnel familiar
with safety engineering.
3.2 Common cause failures (CCF)
To achieve the desired performance levels, the applicable measures against CCF must be implemented
in accordance with the specifications of EN ISO 13849-2.

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3.3 PFHdvalue
The PFHdvalue depends on the version of the MS6-SV-D and the annual actuation
rate (nop).
PFHdvalue MS6-SV-…-D
1
2
1PFHd[10-7]2Actuation rate (nop) [104/a]
Fig. 1 PFHdvalue MS6-SV-…-D

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PFHdvalue MS6-SV-…-D-S3
1
2
1PFHd[10-8]2Actuation rate (nop) [104/a]
Fig. 2 PFHdvalue MS6-SV-…-D-S3
3.4 Range of applications and certifications
The MS6-SV-D is a safety device in accordance with the Machinery Directive.
Safety-oriented standards and test values, which the MS6-SV-D must comply with and fulfil, can be
found in the section Technical data. The product-relevant EC directives and standards can be found in
the declaration of conformity.
Certificates and declaration of conformity for the MS6-SV-D (èwww.festo.com/sp).
3.5 Service
Repairs may only be conducted with the parts listed in the spare parts catalogue
(èwww.festo.com/spareparts). Opening the housing is prohibited. Contact your regional
Festo contact person if you have technical questions.

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4 Control sections and connections
1
2
3
4
5
6
7
8
9
aJ
aA
1Coil connection pilot valve V1
2Coil connection pilot valve V2
3Pneumatic port 2
(output pressure p2)
4Pressure indicator (optional)
5Proximity switch S2
6Proximity switch S1
7Pneumatic silencer mounted at pneumatic
port 3 (exhaust p3)
8Slot for proximity sensor S3
9Valve body
aJ Pneumatic port 1
(operating pressure p1)
aA Flow control screw for soft-start function
Fig. 3 Operating elements and ports

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5 Application and function
5.1 Application
The MS6-SV-D is equipped with proximity sensors, which are intended for diagnostics of the internal
valves. Performance level d/e in category 3 can be achieved by using proximity sensors S1 and S2.
Performance level e in category 4 can be achieved by using an additional proximity sensor S3.
5.2 Designations
Port Identifier Functional
principle
Item
Port 1 (operating pressure p1) 1pneumatic èFig. 3
Port 2 (output pressure p2) 2
Port 3 (exhaust p3) 3
Coil connection pilot valve V1 V1 electrical
Coil connection pilot valve V2 V2
Proximity switch S1 S1 Magnetic
Proximity sensor S2 S2
Proximity sensor S31) S3
Flow control valve DR mechanical
1) Optional.
Tab. 2 Interfaces

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5.3 Switching logic
In the normal position (completely exhausted MS6-SV-D), the pilot valves V1 and V2 are not actuated.
If both pilot valves are actuated, the MS6-SV-D switches first to the switching position 1 and then,
when the switch-through pressure is reached, automatically into switching position 2 (èFig. 4).
V1 V2 S1 S2 S3 MS6-SV-D
Voltage [V] Switching
position
Status
0 0 111Normal position
Connection 1 closed,
passage from connection 2 to 3 opened
24 0 011Normal position, optional testing condition (èTab. 6)
Port 1 closed,
passage from port 2 to 3 opened
024 101Normal position, optional testing condition (èTab. 6)
Reduced flow via flow control valve from port 1 to 2,
passage from port 2 to 3 opened
24 24 001Switching position 1
Reduced flow via flow control valve from port 1 to 2,
passage from port 2 to 3 closed
24 24 000Switching position 2
Full flow from port 1 to 2;
passage from port 2 to 3 closed
Tab. 3 Switching logic
5.4 Function
Symbol Function
Soft-start/quick exhaust valve, electrically
actuated.
Tab. 4 Circuit symbol for the function

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5.5 Switching characteristics
Switching characteristics of the internal valves of the MS6-SV-D. The normal position “bled off ” is
sensed by means of the proximity sensors. Switching logic (è5.3 Switching logic).
Operating pressure p1
Output pressure p2
Pilot valve V2
1 = 24 V, 0 = 0 V
Pilot valve V1
1 = 24 V, 0 = 0 V
Proximity switch S1
1 = 24 V, 0 = 0 V
Proximity switch S2
1 = 24 V, 0 = 0 V
Proximity sensor S3
1 = 24 V, 0 = 0 V
1
1Time
Fig. 4 Input and output switching characteristics in normal status
Proximity switch response times1)
Switching on Switching off
t1Depending on p1, flow control valve
setting and system volume at p2.
tS1.1 Maximum of 4 s after signal at V1. tS1.2 Maximum of 4 s after signal drop at V1.
tS2.1 Maximum of 4 s after signal at V2. tS2.2 Maximum of 4 s after signal drop at V2.
tS3.1 After signal at V1 and V2.
Depending on p1, flow control valve
setting and system volume at p2.
tS3.2 Maximum of 5 s after signal drop at V1 and
V2. Depending on system volume at p2.
1) After the response time the signals are applied statically.
The maximum specified response times must be considered in the diagnostics. These response times are normally shorter.
Tab. 5 Proximity switch response times

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5.6 Switch-through pressure
There is a flow control screw in the end cap. The flow control screw can be used to generate a gradual
pressure build-up of output pressure p2 (èFig. 10). The flow and thus the pressure rise can be adjus
ted by turning the flow control screw. When the output pressure p2 reaches about 50 % of the operat
ing pressure p1, the maximum flow rate is enabled.
1
2
1Ratio of p2 to p1 [%] 2Filling time t
Fig. 5 Switch-through pressure tolerance field

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6 Recommendation for activation and diagnostics
If the results of activation and the sensor signals S1, S2 and S3 are not plausible, carry
out the following measures:
1. Switch off voltage to pilot valves V1 and V2.
2. Output error message.
3. Prevent new switching.
Sequence Activity Status and status
transitions
Diagnostics at each switching operation
1. Apply voltage to pilot valves V1 and V2. V1 = 1; V2 = 1
2. Record edge change at proximity sensors S1 and S2. S1 = 1 è0; S2 = 1 è0
Optional, when using a third proximity switch S3:
3. Record edge change at proximity sensor S3. S3 = 1 è0
Corresponding response times ( èFig. 4).
Diagnostics at each resetting to the normal position
1. Switch off voltage to pilot valves V1 and V2. V1 = 0; V2 = 0
2. Record edge change at proximity sensors S1 and S2. S1 = 0 è1; S2 = 0 è1
Optional, when using a third proximity switch S3:
3. Record edge change at proximity sensor S3. S3 = 0 è1
Corresponding response times ( èFig. 4).
Diagnostics in normal position
Pay attention to forced switch on/off (è15.1 Safety characteristics).
1. Apply voltage to pilot valve V1 V1 = 1
2. Record edge change at proximity switch S1. S1 = 1 è0
3. Switch off voltage to pilot valve V1. V1 = 0
4. Record edge change at proximity switch S1. S1 = 0 è1
5. Apply voltage to pilot valve V2. V2 = 1
6. Record edge change at proximity sensor S2. S2 = 1 è0
7. Switch off voltage to pilot valve V2. V2 = 0
8. Record edge change at proximity sensor S2. S2 = 0 è1
Corresponding response times ( èFig. 4).
Tab. 6 Recommendation for activation and diagnostics

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7 Installation
7.1 Mechanical installation
Note
To avoid damaging the connected lines, note the following points:
 Use mounting parts (e.g. mounting brackets MS6-WP).
Note
Failure of the safety function
The safety function of pressure release might fail if the distance between the pneumatic
silencer and base is not at least 15 mm.
 Observe minimum distance of 15 mm below the pneumatic silencer (èFig. 6).
The open space ensures trouble free exhausting.
Information about mounting the module connector, sub-base and mounting bracket can
be found in the operating instructions enclosed with the relevant accessories.
Fig. 6 Installation

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 Observe the direction of flow from port 1 to port 2.
The figures 1and 2on the housing of the MS6-SV-D
provide orientation (èFig. 7).
Fig. 7 Flow direction
21
Assembly with MS-series service units
Note
Failure of the safety function
Incorrect installation in the service combination can result in failure of the pressure
release safety function.
 Only devices that do not impair pressure release (also after a possible malfunction
of the device) may be placed downstream of the MS6-SV-D.

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Proceed as follows when assembling with one or more service units from the same series (èFig. 8):
1. Remove the MS6-END 1cover cap, if present,
from the side to be assembled (slide upwards).
2. Insert a seal 2between the individual units
(module connector MS6-MV or mounting
bracket MS6-WP/WPB included in the scope
of delivery).
3. Place the module connectors 3in the slots of
the individual devices.
4. Fasten the module connectors with two
screws.
Fig. 8 Assembly
Max. 1.2 Nm
1
2
3

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7.2 Pneumatic installation
7.2.1 Port 1 and 2
If using fittings with width across flats greater than SW24:
 Remove the cover cap MS6-END, if present (slide upwards).
If using fittings:
 Note the permissible screw-in depth of the connecting thread is 10 mm.
For greater screw-in depths, use the port plates MS6-AG…/AQ… from Festo.
 Do not use particle-emitting sealants.
7.2.2 Port 3
When bleeding off a system through the MS6-SV-D, high sound pressure levels are generated.
We therefore recommend that you use a silencer.
The use of a commercially available silencer is possible. However, it must be able to bleed off as well as
safety silencer UOS-1 (è15.2 General data).
Note
Failure of the safety function
When using a commercially available silencer, the silencer may become clogged, which
can result in reduced bleeding. This can lead to complete failure of the safety function
(increased residual pressure in the system after bleeding off).
 Use the safety silencer UOS-1 designed for the device
(è13 Accessories and spare parts).