Festo MS6 Series User manual

MS6(N)-SV-...-C
Soft start/quick exhaust valve
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Deutschland
[phone]
www.festo.com
Operating instructions
8163997
2022-06f
[8163999]
Translation of the original instructions
© 2022 all rights reserved to Festo SE & Co. KG
1About this document
This document describes the use of the soft start/quick exhaust valve.
The document contains additional information for use of the product in safety-
related systems (safety handbook in accordance with IEC 61508).
1.1 Target group
The document is targeted towards individuals who mount and operate the
product. It is additionally targeted towards individuals who are entrusted with
the planning and application of the product in a safety-oriented system.
1.2 Applicable documents
–Assembly instructions for cover MS6/9-SV-C-MK/MH as tamper protection
All available documents for the product è www.festo.com/sp.
1.3 Specified standards
Version
EN 60204-1:2016-10 EN ISO 13849-2:2012-10
EN ISO 4414:2010-11 EN ISO 14118:2018-02
EN ISO 13849-1:2015-12
Tab. 1: Standards specified in the document
2 Safety
2.1 Safety instructions
–Only use the product in its original condition without unauthorised modifica-
tions.
–Only use the product if it is in perfect technical condition.
–Observe the identifications on the product.
–Take into account the ambient conditions at the location of use.
–Before working on the product, switch off the power supply and secure it
against being switched on again.
–Observe the tightening torques. Unless otherwise specified, the tolerance is
± 20%.
–Only use compressed air as an operating medium in accordance with the speci-
fication è 12 Technical data.
2.2 Intended use
The product is intended for mounting in machines or automation systems and is
only to be used as follows:
–in an industrial environment
–in its original condition, without unauthorised modifications
–in safety-related systems only with cover MS6-SV-C-MK as tamper protection
–in perfect technical condition
2.3 Foreseeable misuse
Foreseeable misuse includes:
–outdoor operation
–Bypassing of safety functions
–use in reversible operation with reversal of supply air and exhaust air
–use in "Low Demand Mode" according to EN 61511
–vacuum operation
2.4 Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can
evaluate the work and detect dangers. The qualified personnel have skills and
experience in dealing with electropneumatic (open-loop) control technology.
3 Additional information
–Contact the regional Festo contact if you have technical problems
è www.festo.com.
–Accessories è www.festo.com/catalogue.
Designation Type
Silencer U-3/4-B
Cover as protection against tampering, to cover adjustment and control ele-
ments
MS6-SV-C-MK
Tab. 2: Accessories
4 Product overview
4.1 Product design
1
2
3
4
5
6
7
8
9
Fig. 1: Operating elements and
connections
1
Manual override at the pilot solenoid
valve
2
Pilot solenoid valve
3
Pneumatic port 1 (compressed air
input)
4
Pneumatic port 3 (exhaust)
5
Silencer
6
Adjusting screw for pressure switching
point
7
Main flow control valve for setting the
filling time
8
Internal manual override at the soft-
start/quick exhaust valve
9
Pneumatic port 2 (compressed air
outlet port)
4.2 Product variants
The following table lists selected product characteristics and codes that are
necessary for understanding the instruction manual. Complete type code
è www.festo.com/catalogue.
Feature Code Description
Series MS Standard service unit
Size 6 Grid dimension 62 mm
Thread type – Pipe thread ISO 228
N NPT
Function -SV Soft-start/quick exhaust valve
Port size -1/2 Thread G 1/2
-AGB Sub-base G 1/4
-AGC Sub-base G 3/8
-AGD Sub-base G 1/2
-AGE Sub-base G 3/4
-AQN Sub-base NPT 1/4
-AQP Sub-base NPT 3/8
-AQR Sub-base NPT 1/2
-AQS Sub-base NPT 3/4
Performance Level -C in accordance with EN ISO 13849-1
Supply voltage -10V24 24 V DC (plug pattern in accordance with EN 175301-803, type C),
10 bar
-10V24P
-10V24F
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, type C),
10 bar, without manual override
-10V24D
-10V24E
24 V DC (M12 in accordance with IEC 61076-2-101), 10 bar,
without manual override
-V24 24 V DC (plug pattern in accordance with EN 175301-803, type C)
-V24P 24 V DC (M12 in accordance with IEC 61076-2-101 via plug socket
adapter)
-V110 110 V AC (plug pattern in accordance with EN 175301-803,
type C)
-V230 230 V AC (plug pattern in accordance with EN 175301-803,
type C)
Options -S Silencer
Cover for 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
Tab. 3: Product variants (selection)
4.3 Function
The electro-pneumatic soft start/quick exhaust valve MS6(N)-SV-...-C permits safe
venting and building up of pressure in pneumatic piping systems and terminals in
industry.

Circuit symbols
MS6(N)-SV-...-C-10V24
MS6(N)-SV-...-C-10V24F/P
MS6(N)-SV-...-C-V24
MS6(N)-SV-...-C-V24P
MS6(N)-SV-...-C-V110
MS6(N)-SV-...-C-V230
MS6(N)-SV-...-C-10V24C
MS6(N)-SV-...-C-10V24D
MS6(N)-SV-...-C-10V24E
Tab. 4: Circuit symbols for the functions
4.4 Information on functional safety
4.4.1 Achievable 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.
NOTICE
The suitability for certain applications can only be determined in connection with
the assessment of further components of the subsystem. These must achieve the
same safety level.
4.4.2 Safety functions
The safety functions are:
–Exhausting 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 è 4.3 Function.
This switching position represents the safe state.
4.4.3 Operating conditions
–General information on safe operation è 2 Safety
–Ambient conditions and additional technical specifications è 12 Technical
data.
NOTICE
Actuate the product at least once per month to ensure the safety function works
properly.
4.4.4 Limitations of use
The duration of use is limited to the maximum operating time T10d or is no more
than the mission time TM è Further information.
4.4.5 Characteristic values
Safety characteristics MS6(N)-SV-...-C
Safety function
(Safety Function)
Exhaust
Prevention of unexpected start-up (pressurisation)
Note on forced checking
procedure1)
Switching frequency min. 1/month
Performance level (PL)
in accordance with
EN ISO 13849-1
Up to category 1, PL c2)
Service life value B10 1.2 mill. switching cycles
Service life 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
Average probability of dan-
gerous failure per hour
(Average probability of dan-
gerous failure per hour)
PFHdè Fig. 2
Exhaust time [s] è Tab. 9 Exhaust time
CE marking, Declaration of conformity è www.festo.com/sp
1) Use in "low demand mode" is not permissible.
2) Applies up to the average number of actuations per year = 630,000
Tab. 5: Safety characteristics
Fig. 2: PFHd value, dependent on the average number of operations per year (nop)
5Assembly
Information about mounting the module connector, connecting plate and
mounting bracket can be found in the instruction manual enclosed with the
relevant accessories.
5.1 Requirements
–Take appropriate measures to remove any particles in the supply lines.
5.2 Preparation
1 2
Fig. 3: Flow direction
1
Digit 1 for port 1
2
Digit 2 for port 2
–Place product as close as possible to the installation site.
–Place the product so that there is enough space for removing and installing the
silencer.
–Observe the flow direction from port 1 to port 2. The numbers 1 and 2 on the
housing of the MS6(N)-SV-...-C serve as orientation.
5.3 Assembly with MS-series service unit components
WARNING
Loss of the safety function
If devices that impair the exhaust are placed behind the pneumatic connection 2
of the soft start/quick exhaust valve, this can result in loss of the safety function.
•Only place devices that do not impair the exhaust downstream of pneumatic
connection 2.
1
2
3
Fig. 4: Assembly
1
Cover cap MS6-END
2
Seal
3
Module connector
1. Slide the cover cap MS6-END 1, if present, upwards and remove it.
2. Insert a seal 2 between the individual devices (module connector MS6-MV in
scope of delivery).
3. Place the module connector 3 in the slots of the separate devices.
4. Fasten the module connector with two screws (in scope of delivery of module
connector MS6-MV). Maximum tightening torque 1.2 Nm

6 Installation
6.1 Safety
WARNING
Risk of injury from compressed air.
• Before carrying out installation and maintenance work, switch off the com-
pressed air supply.
6.2 Pneumatic installation
Port 1 and 2
If using screw connectors:
1. Note the permissible screw-in depth of the connecting thread of 10 mm.
2. Make sure that the compressed air lines are connected correctly.
3. Screw the connectors into the pneumatic ports using a suitable sealing mate-
rial.
Port 3, thread size G 3/4 or NPT 3/4
Exhausting a system using the MS6(N)-SV-...-C results in high noise levels.
• Recommendation: use silencer è www.festo.com/catalogue.
1. Screw the silencer into pneumatic port 3.
2. Make sure exhaust is unhindered: neither the silencer nor port 3 may be
blocked.
6.3 Electrical installation
MS6(N)-SV-...-C-10V24.../-V24...:
WARNING
Risk of injury due to electric shock.
• For the electrical power supply with extra-low voltages, use only PELV circuits
that guarantee a reinforced isolation from the mains network.
•Observe IEC 60204-1/EN 60204-1.
MS6(N)-SV-...-C-V110/-V230:
WARNING
Risk of injury due to electric shock.
• Electrical connections must only be established when the voltage is discon-
nected and by qualified personnel.
•Use only voltage sources in accordance with IEC 60204-1/EN 60204-1.
•Connect pilot solenoid valve. Accessories è www.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 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 è Fig. 1. The output pressure
rises in accordance with the throttle position è Fig. 6. If the pre-set pressure
switching point (PSP) is reached, the main seat of the valve opens è Fig. 7.
ÄThe downstream piping system is pressurised.
If the cover is not mounted as tamper protection, the pressurisation process is
started with the soft-start function by actuation of one of the manual overrides
(è Fig. 1).
• Reset manual override è 7.3 Resetting the internal manual override.
7.2 Cover for tamper protection
Use:
–In a safety-related system, the setting and control elements must be fitted with
a cover for tamper protection è 3 Additional information.
If the cover is mounted as tamper protection, the manual overrides cannot be
actuated.
–In a non-safety-related system, use of the cover is optional.
7.3 Resetting the internal manual override
A reset will be required if the internal manual override at the soft-start/quick
exhaust valve 3 was previously actuated without the cover as tamper protection
being mounted. Reset can be performed through one of the following measures.
12
3
Fig. 5: Reset of the internal manual
override
1
Manual override at the pilot solenoid
valve
2
Pilot solenoid valve
3
Internal manual override at the soft-
start/quick exhaust valve
• Output of an electrical signal to pilot solenoid valve 2.
or
• Actuation of the manual override at the pilot solenoid valve 1.
NOTICE
• MS6(N)-SV-...-C-10V24E:
If the internal manual override is activated, it can only be reset through an
electric signal to the pilot control solenoid valve, as the pilot control solenoid
valve has no manual override.
8 Operating
If the voltage drops, for example because the power supply is switched off, the
product exhausts the downstream piping system è 4.3 Function.
After actuation of the internal manual override:
è 7.3 Resetting the internal manual override
9 Maintenance
9.1 Maintenance work
A dirty silencer can extend the time needed for exhausting the system and thus
restrict the safety function.
•Check the silencer regularly and replace if necessary.
9.2 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.
10 Malfunctions
10.1 Fault clearance
Malfunction Cause Remedy
Valve switches
abruptly.
Pressure switching point is too low. –Correct settings.
Main flow control valve (FCV) is
opened too far.
–Correct settings.
Valve does not switch. Pressure switching point is too high. –Correct settings.
Main flow control valve (FCV) is not
opened far enough.
–Correct settings.
Leakage in connected system too
high. The switching pressure is not
reached.
–Reduce leakage in system.
Tab. 6: 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.
11 Dismounting
WARNING
Risk of injury from compressed air.
• Before dismantling work, switch off the compressed air supply.
1. Switch off energy sources:
–Operating voltage
–Compressed air
2. Disconnect the relevant connections of the MS6(N)-SV-...-C.
12 Technical data
12.1 General data
MS6-SV-...-C MS6N-SV-...-C
Certificates, declaration of conformity è www.festo.com/sp
Pneumatic port 1 Port sizes è 4.2 Product variants

MS6-SV-...-C MS6N-SV-...-C
Pneumatic port 2 Port sizes è 4.2 Product variants
Pneumatic port 3 G 3/4 NPT 3/4
Type of mounting –In-line installation
–with accessories
Mounting position Any
Design Piston slide
Actuation type Electric
Exhaust function Cannot be throttled
Type of control Pilot-controlled
Valve function –3/2-way valve, closed, monostable
–Adjustable soft-start function
Operating medium Compressed air to ISO 8573-1:2010 [7:4:4] and inert
gases
Information on the oper-
ating medium
Lubricated operation possible, in which case lubricated
operation will always be required
Manual override at the soft-
start/quick exhaust valve
Detenting/self-reset
Manual override at the pilot solenoid valve
-10V24, -10V24F Non-detenting, actuation from above
-10V24P Non-detenting/detenting, actuation from above
-10V24C/D/E No manual override
-V24, -V24P, -V110, -V230 Non-detenting/detenting, actuation from front
Operating pressure p1
-10V24, -10V24P/C/D/E/F [MPa] 0.3 … 1
[bar] 3 … 10
[psi] 43.5 … 145
-V24, -V24P, -V110, -V230 [MPa] 0.3 … 1.8
[bar] 3 … 18
[psi] 43.5 … 261
Characteristic flow rate values
Pressure switching point Adjustable è 12.3 Pressure switching point (PSP)
Pressurisation flow rate Adjustable via main flow control valve (FCV) è 12.2 Pres-
surisation flow rate
Standard nominal flow rate
1 } 2
[l/min] 5700
Standard nominal flow rate
2 } 3
[l/min] 7600
measured at p = 0.6 MPa (87 psi; 6 bar) with silencer
U-3/4-B
Electrical connection
-10V24, -V24, -10V24C Plug, 2-pin, in accordance with EN 175301-803, type C
-V24P, -10V24P/D/E/F M12x1, 4-pin, in accordance with EN 61076-2-101
-V110, -V230 Plug, 3-pin, in accordance with EN 175301-803, type C
Coil characteristics
-10V24, -10V24P/C/D/E/F 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 fluctuations
-10V24, -10V24P/C/D/E/F,
-V24, -V24P, -V110
[%] ±10
-V230 [%] –14 … +10
Operating and environmental conditions
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 accord-
ance with FN 942017-4 and EN 60068-2-6
Sound pressure level1) [dB(A)] 93
Degree of protection IP65 with plug socket
Weight
without silencer [g] 886
with silencer U-3/4-B [g] 1006
Materials
Housing Die-cast aluminium
Cover top/bottom PA
Piston rod High-alloy steel
Seals NBR
1) maximum A-weighted impulse sound pressure level at the loudest measuring point during exhaust of the
valve with silencer U-3/4-B
Tab. 7: General technical data
Type of severity level (SL)
Vibration load
Frequency range [Hz] Acceleration [m/s2] Deflection [mm]
SL1 SL2 SL1 SG2 SL1 SL2
2 … 8 2 … 8 – – ±3.5 ±3.5
8 … 27 8 … 27 10 10 – –
27 … 58 27 … 60 – – ±0.15 ±0.35
58 … 160 60 … 160 20 50 – –
160 … 200 160 … 200 10 10 – –
Shock load
Acceleration [m/s2] Duration [ms] Shocks per direction
SL1 SL2 SL1 SL2 SL1 SL2
±150 ±300 11 11 5 5
Continuous shock load
Acceleration [m/s2] Duration [ms] Shocks per direction
±150 6 1000
Tab. 8: Type of severity level (SL)
12.2 Pressurisation flow rate
Flow rate qn as a function of the number of revolutions n of the main flow control
valve (FCV) è Fig. 6.
p1 = 0.6 MPa (6 bar; 87 psi)
Fig. 6: Flow diagram
12.3 Pressure switching point (PSP)
A slow pressure build-up of outlet pressure p2 is achieved with the main flow
control 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 applied at the output port.
The pressure switching point can be set by turning the adjusting screw for the
pressure switching point.
Maximum PSP
Minimum PSP
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0,8
0.2
0.4
0.6
0,8
1
1.2
1.4
1.6
1.8
2
Fig. 7: Pressure switching point
12.4 Exhaust time
The following table shows the exhaust time in normal operation (N) with silencer
U-3/4-B at various volumes and operating pressures.
Normal operation N Exhaust time [s]
Operating pres-
sure
[MPa] 0.3 0.6 1 1.8
[bar] 3 6 10 18
[psi] 43.5 87 145 261
Exhaust to [MPa] 0.1 0.05 0.1 0.05 0.1 0.05 0.1 0.05
[bar] 1 0.5 1 0.5 1 0.5 1 0.5
[psi] 14.5 0.725 14.5 0.725 14.5 0.725 14.5 0.725
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
Tab. 9: Exhaust time