Festo DSMI-***-B Series User manual

(en) Operating
instructions
Swivel module
DSMI-...-B
8076556
2017-12d
[8076558]

DSMI-B
Festo DSMI-B 2017-12d
2
Translation of the original instructions
Symbols: Installation and commissioning may only be per
formed in accordance with these instructions by
technicians with appropriate qualifications.
Warning
Caution
Note
Environment
Accessories
English 3.........................................................................

DSMI-B
Festo DSMI-B 2017-12d English 3
Swivel Module DSMI-...-BEnglish
Contents
1 Operating elements and ports 4..................................
2 Function and application 5.......................................
3 Transport and storage 5.........................................
4 Safety conditions 6.............................................
5 Installation 7..................................................
Mechanical installation 7.........................................
Adjusting the stops on the DSMI 9.................................
Adjusting the DSMI with internal stop system 11......................
Installing the pneumatic system 12.................................
Electrical installation 13..........................................
6 Commissioning 15...............................................
Commissioning the complete system 15.............................
Commissioning an individual unit 15................................
7 Operation 19...................................................
8 Care and maintenance 19.........................................
9 Disassembly and repairs 20.......................................
10 Accessories 20..................................................
11 Troubleshooting 21..............................................
12 Technical data 21...............................................

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Documentation on the product
For all available product documentation èwww.festo.com/pk
1 Operating elements and ports
1
2
3
456
7
8
9
aJaB aA
1Mounting thread for drive
2Drive shaft
3Compressed air ports
4Measuring system connection
5Adjustment sleeve with lock nut
6Hole for earth connection
7Stop, consisting of shock absorber
retainer and adjustment sleeve
8Angle scale
9Hexagon
aJ Snap ring for optional cover cap
aA Stop lever with integrated magnet for
position monitoring
aB Locking screw for shock absorber
retainer
Fig. 1

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2 Function and application
When the compressed air ports are pressurised alternately, the inner vane in
the housing swivels backwards and forwards. This swivel movement is transmitted
to the outer stop lever and the drive shaft as a rotary movement. The angle of
rotation can be limited by means of adjustable stops and adjustment sleeves for
the stop lever. To use the DSMI as a measuring cylinder, the adjustment sleeve in
the shock absorber retainer can be replaced with cushioning components
(elastomer shock absorbers or shock absorbers).
The pneumatic DSMI swivel module was designed for rotating or swiveling work
loads which do not have to carry out a complete revolution.
The integrated measuring system was designed for monitoring the swivel position
in combination with a positioning controller from Festo (e.g. CMPX, CMAX,
SPC200, SPC11 “Soft Stop”) or for use as a measuring cylinder.
If it is used as a measuring cylinder, the compressed air will need to be throttled
(e.g. using one-way flow control valves).
The device is intended for use in an industrial environment.
3 Transport and storage
 Take the weight of the DSMI into account:
It weighs up to 7 kg.
 Ensure the following storage conditions:
– Storage times should be kept to a minimum
– Cool, dry and shaded storage locations protected from corrosion.

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4 Safety conditions
For electronically closed-loop control of the DSMI in combination with a
positioning controller:
Note
Special conditions apply to the electronic regulation of the DSMI.
 Note the warnings and instructions in the descriptions of the positioning
controller.
The following applies to all applications:
Note
Malfunctions will occur if the device is not used correctly.
 Make sure that the specifications in this chapter are always observed.
 Compare the limit values specified in these operating instructions with your
actual application (e.g. pressures, forces, torques, temperatures, masses).
The product can only be operated in accordance with the relevant safety
guidelines if the maximum load limits are observed.
 Take the ambient conditions at the location of use into account.
Corrosive environments (e.g. ozone) will reduce the service life of the product.
 Make sure that the compressed air is properly prepared (èTechnical data).
 Maintain the selected medium for the complete service life of the product.
Example: Always use non-lubricated compressed air.
 Pressurise your entire system slowly. There will then be no uncontrolled
movements.
For slow start-up pressurisation, use the HEL pressure build-up.
 Please comply with national and local safety laws and regulations.
 Remove all transport packaging such as foils, caps and cartons
(except for any plugs in the pneumatic connections).
The packaging is intended for recycling on the basis of its constituent
materials (exception: oiled paper = other waste).

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 Unauthorised product modification is not permitted.
 Note the warnings and instructions on the product and in the relevant
operating instructions.
 Take the tolerance of the tightening torques into account. Without special
specification, the tolerance is ±20 %.
5 Installation
Mechanical installation
For electronically closed-loop control of the DSMI in combination with a position
ing controller:
Note
Special installation specifications apply to the electronically controlled
operation.
 To install the mechanical system, please observe the instructions in the
descriptions of the positioning controller.
The following applies to all applications:
 Handle the DSMI with care so that the drive shaft is not damaged. This applies
in particular to the following:
 Check whether it is necessary to drill
additional holes in the mounting flange
of the DSMI.
The grey areas (G) in the drawing show
where additional holes can be drilled on
the DSMI (e.g. to mount centring pins).
 Position the DSMI so that you can easily reach the operating parts.
 Fasten the DSMI with at least 2 screws.
Fig. 2
(G)

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Front mounting Rear mounting Side mounting
Fig. 3
When using the hexagon socket to fit a self-configured
second drive shaft:
 Make sure that the second drive shaft
cannot slide out of the hexagon socket 9.
This is ensured by the thread (A) at the
base of the hexagon socket. A fixing screw
can be fitted in this case. For this, the
second drive shaft must be hollow.
 When placing the moving mass, make
sure that the following specifications are
fulfilled (è“Technical data” and
“Characteristic curves” chapters):
– It must not be tilted,
– Permissible radial force Fz,
– Permissible axial force Fx,
– Permissible mass moment of inertia.
The mass moment of inertia of the moving mass should be calculated.
Lever arms, cantilever arms and masses on a second drive shaft should be
taken into account in the calculation. The permissible mass moment of inertia
(èCatalogue specifications) depends on the specific situation:
– Nominal size of the DSMI
– Type of end-position cushioning
– Swivel time
– Swivel angle
It can be taken from the catalogue data or the description of the positioning
controller.
Fig. 4
(A)
Fig. 5

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To fasten the work load:
1. Push the moving mass on to the drive shaft.
2. Make sure that the moving mass cannot
slide off the drive shaft. This is ensured by
the thread in the drive shaft. When
tightening the screws, lock them at the
hexagon socket 9.
DSMI-...-B 25 40 63
Tightening torque [Nm] 2.9 9.9 47
Fig. 7
 Adjust the stops of the end positions statically according to the type.
 If possible, use symmetric angle settings
that follow the line of symmetry of the
DSMI.
These produce a more even movement
between right-hand and left-hand swivel
ing movements.
Adjusting the stops on the DSMI
Note
Operating the DSMI without cushioning will destroy it.
 Make sure that the DSMI is always only operated with shock absorbers
(electronically controlled, internal or external).
 Make sure that the locking screws aB of the shock absorber retainers are
retightened with the specified tightening torque.
 Observe the instructions in the descriptions of the positioning controller
when adjusting the stops.
For use as a measuring cylinder:
 Replace the adjustment sleeves with cushioning elements
(elastomer shock absorbers or shock absorbers è“Accessories” chapter).
Observe the enclosed documentation.
Fig. 6
Fig. 8

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1. Remove the cover cap of the DSMI from the housing (if present).
2. Swivel the moving mass to the desired
end position.
If the DSMI is depressurised, this can be
done by hand or using a hexagon spanner
on the swivel lever aA.
The angle scale can be used for precise
positioning.
DSMI-...-B 25 40 63
Graduation (1 graduation mark =) [°] 211
Fig. 10
3. Unscrew the locking screws aB for the
shock absorber retainers. To shift the
shock absorber retainers, it is sufficient to
slacken the locking screws until they can
just barely be shifted.
4. Push the shock absorber retainer towards
the stop lever until the adjustment sleeve
or the fixed stop of the shock absorber
(elastomer shock absorber or shock
absorber) touches the stop lever.
5. Retighten the locking screw aB of the
shock absorber retainer with the following
tightening torque.
Only with the specified tightening torque
will the gearing of the shock absorber
retainer grip the housing material.
DSMI-...-B 25 40 63
Tightening torque aB [Nm] 10 39 79
Fig. 14
Fig. 9
Fig. 11
Fig. 12
Fig. 13
aB

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Festo DSMI-B 2017-12d English 11
6. Repeat the adjustment for the other end position.
7. Press the cover cap of the DSMI back on
to the snap ring of the housing
(if present).
The cover cap can also be snapped on to
freely positioned shock absorber retainers
if the elements are broken through at the
predetermined breaking point.
 Check whether additional shock absorbers or stops are necessary.
Additional shock absorbers or stops are necessary in the following cases:
– For moving masses with a mass moment of inertia greater than the
determined permitted mass moment of inertia
– When the DSMI is operated without an air cushion on the exhaust side
(e.g. after long breaks between the individual swivel movements).
Adjusting the DSMI with internal stop system
When external stops and shock absorbers are used:
 Make sure that the following
specifications are complied with:
– Point of impact in the mass moment of
inertia (important for eccentric masses
on the lever arm)
– Max. permissible stop force
– Minimum stop radius rmin
(èTechnical data)
– Using protective devices (e.g. cover cap èAccessories)
Fig. 15
Fig. 16

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Installing the pneumatic system
Note
Uncontrolled operation without positioning controller and without additional
external one-way control valves will destroy the DSMI, even if it is pressurised
only once for test purposes.
 Note that the DSMI does not have any flow control for the pneumatic
connections.
The DSMI may only be used without external one-way control valves in
electronically controlled operation in combination with a positioning
controller.
For electronically closed-loop control of the DSMI in combination with a
positioning controller:
Note
Special installation specifications apply to the electronically controlled
operation.
 To install the pneumatic system, please observe the instructions in the
descriptions of the positioning controller.
 Connect the tubing of the DSMI with the
proportional directional control valve
according to the colour codes of the
connections.
– Black release ring (looking at the stop
lever, it swivels in clockwise direction).
– Blue release ring (looking at the stop
lever, it swivels in anticlockwise
direction).
Fig. 17

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The following applies to all other applications (e.g. as measuring cylinder):
 Use one-way flow control valves GRLA
to set the swivel speed.
These are screwed directly into the
compressed air ports (for this, remove the
standard connection with colour code).
 Connect the DSMI tubing.
For eccentric masses:
 Check whether controlled HGL non-return valves or a VZS compressed air
compensation reservoir are necessary.
In this way you can prevent the moving mass from moving down and hitting the
bottom if there is a sudden drop in pressure.
Electrical installation
Note
Leakage currents can impair the measuring system.
 Make sure that the earth connection 6is connected with the earth potential
(earth cable optionally either with eyelet or blade connector).
The cable cross section of the earth cable must be at least 2.5 mm2and the
cable length must not exceed 0.5 m.
 Insert the supplied screw aC with cutting
thread into the hole for the earth
connection 6.
This will ensure the electrical contact in
spite of the anodising layer.
Fig. 18
Fig. 19
aC6

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 Connect the measuring system to the connecting cable
as described in the description of the positioning controller.
The PIN assignment is shown in the table below:
Pin Designation Assignment
1DC +10 V
31
24
2Signal 1)
3GND
4 Screen
1) Terminating resistor: 5 kΩ
Linearity: ±0.25 %
Fig. 20
For interrogation of the end positions
with DSMI-12 ... 40-B:
 Place the proximity switch (B)
SME/SMT-10F-...-KL on the groove
of the shock absorber retainer.
A sensor bracket (D èAccessories) is
required to fasten the proximity switch.
The proximity switch is actuated by
magnets (C) in the stop lever.
For interrogation of the end positions
with DSMI-63 ...-B:
 Place the SME/SMT-8..-... proximity
sensor (B) in the sensor bracket
(E èAccessories).
The proximity sensor is actuated by
magnets (C) in the stop lever.
Fig. 21
(C)(B)(D)
Fig. 22
(C)(B) (E)

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6 Commissioning
Commissioning the complete system
 Pressurise your entire system slowly to avoid any uncontrolled movements.
Commissioning an individual unit
When adjusting the DSMI:
Warning
Risk of injury from rotating masses.
 Make sure that the DSMI is set into motion only
when the safety devices are fitted.
 Make sure that the swivel range of the DSMI
– is safeguarded to prevent anyone from
reaching into the swivel range
– no objects can get there (e.g. by means of an
individual protective screen).
Note
The mechanically set end position may change under operating pressure.
 Repeat the setting procedure under operating conditions.
Note
The swivel module will be destroyed by excessive mass moments of inertia.
 Make sure that the permitted mass moment of inertia is complied with for
the various operating modes.
The permissible mass moment of inertia during electronically controlled
operation exceeds the value of unthrottled use several times.

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For electronically closed-loop control of the DSMI in combination with a
positioning controller:
Note
Special commissioning specifications apply to the electronically controlled
operation.
 Observe the instructions in the descriptions of the positioning controller for
commissioning.
 Make sure that the DSMI with electronic end position cushioning
(e.g. in combination with CMPX or SPC11 soft stop) is always operated with
metal stops (no elastomer shock absorbers or shock absorbers permitted).
The following applies to all other applications (e.g. as measuring cylinder):
1. Close both upstream
one-way flow control valves
– Completely first,
– Then open them again approximately
one turn.
2. Make sure that the operating conditions
lie within the permitted ranges.
3. Pressurise the drive in one of the following ways:
– Slow pressurisation of one side,
– Simultaneous pressurisation of both sides with subsequent venting of one
side
4. Start a test run.
5. During the test run, check whether the following settings on the DSMI
need to be modified:
– The swivel range of the moving mass,
– The swivel speed of the moving mass.
6. Unscrew the one-way flow control valves
slowly until the desired swivel speed is
set.
The stop lever should reach the end
position safely, but not strike hard
against it.
Fig. 23
Fig. 24

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Festo DSMI-B 2017-12d English 17
Note
If the impact is too hard, it will cause the stop lever to rebound out of the end
position, resulting in a reduction of the service life.
If the stop lever can be heard to strike hard:
7. Interrupt the test run.
Causes of hard knocking may be:
– Mass moment of inertia of the moving mass too high
– Swivel speed of the moving mass too high
– No compressed air cushion on the exhaust side
– Insufficient shock absorption.
8. Make sure you remedy the above-mentioned causes.
9. Repeat the test run.
When all necessary corrections have been made:
10. End the test run.
Fine adjustment of the end positions
Note
An adjustment sleeve that is screwed out too far 5or a shock absorber that is
screwed in or out too far results in the stop lever:
– Either hitting the adjustment sleeve or the shock absorber at an
impermissible angle or
– Hitting the shock absorber retainer without shock absorption.
In such a case there is a risk of the DSMI or the shock absorber being
destroyed.
 Make sure that you do not screw the adjustment sleeve or shock absorber in
or out any further than shown in the following table (èFig. 26).
 Pressurise the desired end position on the DSMI.
The end positions can be adjusted under pressure.

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1. Remove the cover cap from the housing (if present).
2. Unscrew the locking nut (K) from the
adjustment sleeve or the shock absorber.
The unscrewing length aD and aE of the
adjustment sleeve or of the shock
absorber (elastomer shock absorber or
shock absorber) can be used to
compensate the deviation of the end
position.
3. Screw the adjustment sleeve or shock
absorber into or out of the shock absorber
retainer using a hexagon spanner.
The permissible unscrewing lengths are
listed in the following table.
DSMI-...-B 25 40 63
Unscrewing length aD
(adjustment sleeve/elastomer shock ab
sorber)
[mm] 0 … 4 0 … 5.4 0 … 6.6
Unscrewing length aE
(shock absorber)
[mm] 0 … 2 0 … 2.7 0 … 3.3
Fig. 26
When all adjustment sleeves or shock absorbers have been adjusted:
4. Retighten the locking nuts (K) of the adjustment sleeves or shock absorbers.
DSMI-...-B 25 40 63
Tightening torque: adjustment sleeve1) [Nm] 3 20 35
1) Please refer to the operating instructions for the shock absorber for the tightening
torques.
Fig. 27
5. Press the cover cap (if present) of the
DSMI back on to the snap ring.
6. Repeat the test run.
Fig. 25
aD
aE
(K)
(K)
Fig. 28

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7 Operation
Warning
 Make sure that:
– Nobody can reach into the swivel range of the moving mass
– And that no objects can get there (e.g. by means of a self-made protective
screen).
For several uninterrupted swivel cycles:
 Make sure that the maximum permitted swivel frequency is not exceeded
(èTechnical data).
Otherwise, the functional reliability will be impaired by excessive heating.
To extend the service life of the shock absorbers:
 Apply a thin coat of grease to the stop caps of the shock absorbers.
To check the functions:
 Check the shock absorbers for oil loss after every 2 million switching cycles.
 Replace shock absorbers with visible oil loss or at the latest every 5 million
switching cycles (èAccessories).
8 Care and maintenance
 In case of contamination, clean the product with a soft cloth.
All non-abrasive cleaning agents are permitted (e.g. warm soap suds up to
+60 °C).

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9 Disassembly and repairs
For eccentric masses on the lever arm:
Warning
Risk of injury from masses that slide down
suddenly if there is a drop in pressure.
 Make sure that the mass has reached
a stable position before venting
(e.g. the lowest point).
Recommendation:
 Return the product to our repair service for overhaul.
The necessary fine adjustments and tests will then be taken into account.
 Information on spare parts and aids can be found under:
www.festo.com/spareparts
10 Accessories
Note
 Please select the appropriate accessories from our catalogue:
www.festo.com/catalogue
Fig. 29