Festo MS6-SV-...-C series User manual

Soft-start/quick exhaust valve
MS6(N)-SV-...-C
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
[phone]
www.festo.com
Operating instructions
(Translation of the original instructions)
8084750
2018-02c
[8084752]
Soft-start/quick exhaust valve MS6(N)-SV-...-C English.....................
1 About this document
This document describes the use of the above-mentioned product.
The document contains additional information for use of the product in
safety-related systems (safety handbook in accordance with IEC 61508).
1.1 Further applicable documentation
– Assembly instructions for cover (tamper protection) MS6/9-SV-C-MK/MH
For all available product documentation èwww.festo.com/pk
1.2 Target group
The document is targeted towards persons who assemble and operate
the product. It is additionally targeted towards individuals who are entrusted with
the planning and application of the product in a safety-related system.
1.3 Specified standards
Version status
IEC 61508-2:2010-04 EN ISO 13849-1:2015-12
EN 60204-1:2006-06/A1:2009-02+ AC:2010-02 EN ISO 13849-2:2012-10
EN ISO 4414:2010-11 EN 1037/A1:2008-04
Fig. 1 Standards
2 Safety
2.1 Safety instructions
– Only use the product in its original condition without unauthorised modifications.
– Only use compressed air as an operating medium in accordance with the spe
cification è13 Technical data.
2.2 Intended use
The product is intended for installation in machines or automated systems and
may be used only in the following ways:
– in an industrial environment
– in its original condition, without unauthorised modifications
– in safety-related systems, only with cover (tamper protection) MS6-...-MK
– in perfect technical condition
2.3 Foreseeable misuse
Foreseeable misuse includes:
– use outdoors
– bypassing of safety functions
– use in reversible operation (using supply air instead of exhaust air, and vice
versa)
– use in low demand mode in accordance with EN 61511
– vacuum operation
2.4 Training of specialized personnel
Installation, mounting, commissioning, maintenance, repair and removal from
operation may only be performed by qualified specialized personnel with know
ledge of and experience with electrical and pneumatic control technology.
2.5 Further information
Accessories èwww.festo.com/catalogue
Designation Type
Silencer U-¾-B
Cover (tamper protection)1) MS6-SV-C-MK
1) For covering setting and control elements
Fig. 2 Accessories
2.6 Service
Contact your regional Festo contact person if you have technical questions
èwww.festo.com.
3 Information on functional safety
3.1 Attainable safety rating
The product is suitable for use as an element in a safety-related system in accord
ance with EN ISO 13849-1 up to category 1, performance level (PL) c.
Note
The suitability for certain applications can only be determined in connection with
the assessment of further components of the subsystem.
3.2 Safety functions
The safety functions are:
– safe venting in the downstream piping system and terminals
– prevention of unexpected start-up (pressurisation)
The safety functions are triggered by switching off the power supply at the pilot
solenoid valve. As long as the voltage at the pilot solenoid valve remains switched
off, the connection between ports 2 and 3 is enabled èFig. 5.
This switching position represents the safe state.
3.3 Operating conditions
– General notes on safe operation è2 Safety.
– Ambient conditions and additional technical specifications è13 Technical data.
Note
 Actuate the product at least once per month to ensure the safety function
works properly.
3.4 Limitations of use
The duration of use is limited to the maximum operating time T10d or is no more
than the mission time TMèFig. 3.
3.5 Characteristic values
Safety characteristic
(in accordance with IEC 61508)
Value
MS6(N)-SV-...-C
-10V24
-10V24P
-10V24C
-10V24D
-V24
-V24P
-V110 -V230
Safety function
(Safety Function)
Exhausting
Prevention of unexpected start-up
(pressurisation) in accordance with
EN 1037/A1
Note on forced checking procedure1) Switching frequency at least 1/month
Performance level (PL) in accordance with EN ISO
13849-1
Up to category 1, PL c2)
Service life value B10 1.2 million switching cycles
Mission time TM[a] 20
Maximum operating time T10d [a] 2 x B10/nop or max. TM
Diagnostic coverage
(Diagnostic Coverage)
DC 0
Hardware fault tolerance
(Hardware Fault Tolerance)
HFT 0
Element type in accordance with EN 61508-2 Type A
Average probability of dangerous
failure per hour
(Average probability of dangerous
failure per hour)
PFHdèFig. 4
Max. positive test pulse with logic 0 [μs] 1000 2000 – –
Max. negative test pulse with logic 1 [μs] 800 1900 – –
Exhaust time [s] èFig. 15
CE marking (see declaration of conformity)
èwww.festo.com/sp
In accordance with EU Machinery Directive
–In accordance with
Low Voltage
Directive
1) Use in low demand mode is not permissible.
2) Applies up to the average number of operations per year (nop) = 630,000
Fig. 3 Safety characteristics

nop [104/a]
PFHd[10–6]
Fig. 4 PFHdvalue, dependent on the average number of operations per year (nop)
4 Product overview
4.1 Function
The electro-pneumatic soft start/quick exhaust valve MS6(N)-SV-...-C permits safe
venting and building up of pressure in pneumatic pipeline systems and terminal
equipment in industry.
Symbol MS6(N)-SV-...-C
-10V24
-10V24P
-V24
-V24P
-V110
-V230
-10V24C
-10V24D
Fig. 5 Circuit symbols for the functions
4.2 Design
2
3
4
5
16
7
8
9
1Manual override at the pilot solen
oid valve1)
2Pilot solenoid valve
3Pneumatic port 1
(compressed air inlet)
4Pneumatic port 3 (exhaust)
5Silencer
6Adjusting screw for pressure
switching point (èFig. 14)
7Main flow control valve for setting
the filling time
8Internal manual override at
the soft-start/quick exhaust
valve2)
9Pneumatic port 2 (compressed air
outlet port)
1) -10V24: non-detenting, actuation from above
-10V24P: non-detenting/detenting, actuation from above
-V24/-V24P/-V110/-V230: non-detenting/detenting, actuation from front
2) Detenting/self-resetting, for feature -10V24C/-10V24D covered with threaded pin
Fig. 6 Operating elements and connections
4.3 Product variants
The following table (Fig. 7) contains selected product characteristics and
codes that are necessary for understanding the operating instructions.
Complete type code èwww.festo.com/catalogue
Characteristic Code Description
Series MS Standard service unit
Size 6 Grid dimension 62 mm
Thread type –Pipe thread ISO 228
NNPT
Function -SV Soft-start/quick exhaust valve
Connection size -1/2 G½thread
-AGB Connecting plate G¼
-AGC Connecting plate GÅ
-AGD Connecting plate G½
-AGE Connecting plate G¾
-AQN Connecting plate N¼
-AQP Connecting plate NÅ
-AQR Connecting plate N½
-AQS Connecting plate N¾
Performance level -C In accordance with EN ISO 138491
Supply voltage -10V24 24V DC (plug pattern in accordance with EN 175301-803,
shape C), 10bar
-10V24P 24 V DC (M12 in accordance with IEC 610762101),
10 bar
-10V24C 24V DC (plug pattern in accordance with EN 175301-803,
shape C), 10bar, without manual override
-10V24D 24V DC (M12 in accordance with IEC 610762101), 10bar,
without manual override
-V24 24 V DC (pin allocation in accordance with EN 175301)
-V24P 24 V DC (M12 in accordance with IEC 610762101
via plug socket adapter)
-V110 110 V AC (pin allocation in accordance with EN 175301)
-V230 230 V AC (pin allocation in accordance with EN 175301)
Options -S Silencer
Cover
(tamper protection)
-MK Cover for internal manual override at the soft-start/quick
exhaust valve, main flow control valve, adjusting screw
for pressure switching point and manual override at
the pilot solenoid valve
Fig. 7 Product variants (selection)
5 Mounting
Information about mounting the module connector, connecting plate and
mounting bracket can be found in the operating instructions enclosed with
the relevant accessories.
Requirements
– Take appropriate measures to remove any particles in the supply lines.
Preparation
 Place product as close as possible
to the installation site.
 Place product in such a way that you
have sufficient space for installation
and removal of the silencer.
 Observe the direction of flow from
port 1 to port 2.
The numbers 1and 2on the hous
ing of the MS6(N)-SV-...-C provide
orientation.
Fig. 8 Flow direction
1
2
Assembly with MS-series service unit components
Note
Failure of the safety function
Incorrect installation in the service unit can result in failure of the pressure re
lease safety function.
 Only devices that do not impair pressure release, even after a possible mal
function of the device, may be placed downstream of the MS6-SV-C.

Assembly with MS-series service units
1. Slide any cover cap MS6-END 1on
the side to be assembled upwards
and remove it.
2. Insert a seal 2between the indi
vidual devices (module connector
MS6-MV in scope of delivery).
3. Place module connector 3in
the slots of the individual devices.
4. Fasten the module connector with
two screws (MS6-MV scope of
delivery).
– Max. tightening torque 1.2 Nm.
Fig. 9 Assembly
1
2
3
6 Installation
6.1 Pneumatic installation
Port 1 and 2
If using fittings:
1. Note the permissible screw-in depth of the connecting thread is 10 mm.
2. Make sure that the compressed air lines are connected correctly.
3. Screw the fittings into the pneumatic ports using appropriate sealing material.
Port 3 (thread size G¾or NPT¾)
Exhausting a system using the MS6(N)-SV-...-C results in high noise levels.
 Recommendation: use silencer èwww.festo.com/catalogue.
1. Screw the silencer into pneumatic port 3.
2. Make sure exhaust is unhindered:
Both the silencer and port 3 must remain unblocked.
6.2 Electrical installation
Warning
Electric voltage – risk of injury due to electric shock.
 Electrical connections must only be established when the voltage is discon
nected and by qualified personnel.
MS6(N)-SV-...-C-10V24/10V24P/10V24C/10V24D/V24/V24P
 For the electrical power supply, use only PELV circuits in accordance with
IEC 60204-1/EN60204-1 (protective extra-low voltage, PELV).
MS6(N)-SV-...-C-V110/V230
 Use only voltage sources in accordance with IEC 60204-1/EN60204-1.
 Connect pilot solenoid valve (accessories èwww.festo.com/catalogue).
7 Commissioning
7.1 Pressurising the product and piping system
1. Apply operating pressure p1 at MS6(N)-SV-...-C.
2. Switch on the supply voltage.
The outlet pressure p2 is built up slowly. The filling time “t” is set through
the main flow control valve attached to the cover (èFig. 6, 7).
The outlet pressure rises in accordance with the throttle point èFig. 13.
If the preset pressure switching point (PSP) is reached, the main seat of
the valve opens èFig. 14.
The downstream piping system is pressurised.
If the cover (tamper protection) is not mounted, the pressurisation pro
cess is started with the pressure build-up function through operation of
one of the manual overrides (èFig. 6).
 Reset manual override è7.3 Resetting the internal manual override..
7.2 Cover (tamper protection)
Use:
– In a safety-related system, the setting and control elements must be equipped
with a cover (tamper protection) è2.5 Further information.
If the cover (tamper protection) is mounted, the manual overrides cannot be
actuated.
– In a non-safety-related system, use of the cover (tamper protection) is optional.
7.3 Resetting the internal manual override.
A reset will be required if the internal manual override at the soft-start/quick ex
haust valve 8was previously actuated without the cover (tamper protection)
being mounted.
Resetting can be performed through one of the following measures:
 Issue of an electrical signal to pilot
solenoid valve 2.
or
 Actuation of the manual override at
pilot solenoid valve 1.
Fig. 10 Resetting the internal
manual override
12
8
Activation of the internal manual override for feature -10V24C/-10V24D
 Activate manual override 8, if necessary, by removing the threaded pin.
Note
If the internal manual override is activated, it can only be reset through an elec
tric signal to the pilot control solenoid valve 2, as the pilot control solenoid
valve has no manual override.
8 Operation
If the voltage drops, for example because the power supply is switched off,
the product exhausts the downstream piping system èFig. 5.
After actuation of the internal manual override:
è7.3 Resetting the internal manual override.
9 Dismounting
Note
Residual pressure must be eliminated before dismantling.
1. Switch off energy sources:
– operating voltage
– compressed air
2. Disconnect the relevant connections of the MS6(N)-SV-...-C.
10 Disposal
When the product reaches its maximum operating time or mission time, it must be
recycled in an environmentally friendly manner in accordance with applicable spe
cifications.
11 Fault clearance
Malfunction Possible cause Remedy
Valve switches abruptly. Pressure switching point is too low. Correct settings.
Main flow control valve is opened too
far.
Valve does not switch. Pressure switching point is too high. Correct settings.
Main flow control valve is not opened
far enough.
Fig. 11 Fault clearance
Repairs to the product are not permissible.
 In the event of malfunctions or failure, replace the product and let Festo know
about the failure.
 Return defective product to Festo.
12 Maintenance
The product is maintenance-free.
Cleaning
1. Switch off energy sources:
– operating voltage
– compressed air
2. If necessary, clean the product on the outside.
Soap suds (max. +50 °C), petroleum ether and all non-abrasive cleaning agents
may be used.

13 Technical data
13.1 General data
Characteristic Specification/value
MS6-SV-...-C MS6N-SV-...-C
Pneumatic port 1 Connection sizes èFig. 7 (with accessories)
Pneumatic port 2 Connection sizes èFig. 7 (with accessories)
Pneumatic port 3 G¾NPT¾
Type of mounting In-line installation
With accessories
Mounting position Any
Design Piston spool
Type of actuation Electrical
Exhaust function Without flow control
Manual override (at the pilot solenoid valve)
-10V24 Non-detenting, actuation from above
-10V24P Non-detenting/detenting, actuation from above
-10V24C/-10V24D No manual override
-V24/-V24P/-V110/-V230 Non-detenting/detenting, actuation from front
Manual override
(at the soft-start/quick exhaust valve)
Detenting/self-resetting
Type of control Piloted
Valve function 3/2-way valve, closed, monostable,
pressure build-up function can be set
Operating medium Compressed air in accordance with
ISO 8573-1:2010 [7:4:4]
Note on the operating medium Lubricated operation possible
(required in further operation)
Operating pressure p1
-10V24/-10V24P/-10V24C/
-10V24D
[bar] 3 … 10
-V24/-V24P/-V110/-V230 [bar] 3 … 18
Pressure switching point [bar] Adjustable èFig. 14
Venting flow rate Adjustable via main flow control valve èFig. 13
Flow rate characteristics
-1/2: C-value 1 }2 [l/(s ·bar)] 23.2
-1/2: C-value 2 }3 [l/(s ·bar)] 25.6
-1/2: b-value 1 }2 0.4
-1/2: b-value 2 }3 0.4
Standard nominal flow rate
1 }2
[l/min] 5700
Standard flow rate 2 }3 [l/min] 7600
measured at p = 6 bar with silencer U-¾-B
Ambient temperature [°C] 0 … +60 (0 … +50 with pressure sensor)
Temperature of medium [°C] 0 … +60 (0 … +50 with pressure sensor)
Storage temperature [°C] –10 … +60 (0 … +50 with pressure sensor)
Shock resistance Shock test with severity level 2 in accordance
with FN 942017-5 and EN 60068-2-27
Vibration resistance Transport application test with severity level 2
in accordance with FN 942017-4 and
EN 60068-2-6
Electrical connection
-10V24/-V24/-10V24C Plug, 2-pin, in accordance with EN 175301-803,
type C
-10V24P/-V24P/-10V24D M12x1, 4-pin, in accordance with
EN 61076-2-101
-V110/-V230 Plug, 3-pin, in accordance with EN 175301-803,
type C
Characteristic coil data
-10V24/-10V24P/-10V24C/
-10V24D
24 V DC, 1.8 W
-V24/-V24P 24 V DC, 1.5 W
-V110 110 V AC: 50/60 Hz, pick-up power 3 VA, holding
power 2.4 VA
-V230 230 V AC, 50/60 Hz, pick-up power 3 VA, holding
power 2.4 VA
Permissible voltage fluctuation
-10V24/-10V24P/-10V24C/
-10V24D/-V24/-V24P/-V110
[%] ±10
-V230 [%] –14 / +10
Noise level1) [dB(A)] 93
Degree of protection IP65 with plug socket
Materials
Housing Die-cast aluminium
Cover top/bottom PA
Piston rod High-alloy steel
Seals NBR
Weight
Without silencer [g] 886
With silencer U-¾-B [g] 1006
1) Maximum A-weighted impulse sound pressure level at the loudest measuring point when exhausting
the valve with silencer U-¾-B
Fig. 12 General technical data
13.2 Venting flow rate
Flow rate qn as a function of the number of turns n of the main flow control valve
èFig. 6, 7
qn [l/min]
n
p1: 6 bar
Fig. 13 Flow diagram
13.3 Pressure switching point (PSP)
A slow pressure build-up of outlet pressure p2 is achieved with the main flow con
trol valve located in the cover. If the outlet pressure p2 has reached the switch-
through pressure, the valve opens and the complete operating pressure p1 is ap
plied at the outlet port.
The pressure switching point can be set by turning the adjusting screw for
the pressure switching point (èFig. 6, 6).
PSP [bar]
p1 [bar]
2
1
1Maximum PSP 2Minimum PSP
Fig. 14 Pressure switching point
13.4 Exhaust time
The following table shows the exhaust time in normal operation (N) with silencer
U-¾-B at various volumes and operating pressures.
Normal
operation N
Operating
pressure
3 bar
Operating
pressure
6 bar
Operating
pressure
10 bar
Operating
pressure
18 bar
Exhaust time [s] Exhaust time [s] Exhaust time [s] Exhaust time [s]
to
1.0 bar
to
0.5 bar
to
1.0 bar
to
0.5 bar
to
1.0 bar
to
0.5 bar
to
1.0 bar
to
0.5 bar
Volume [l] 2 0.4 0.5 0.5 0.6 0.6 0.7 0.7 0.8
10 0.6 0.8 0.9 1.1 1.1 1.3 1.4 1.6
20 0.9 1.3 1.5 1.9 1.9 2.9 3.5 3.0
40 1.5 2.2 2.6 3.4 3.4 4.3 4.5 5.5
Fig. 15 Exhaust time