Festo MPPES-...-010 Series User manual

en Operating
instructions
8081503
2018-01f
[8081505]
Proportional pressure regulating valve
MPPES

MPPES
2Festo – MPPES – 2018-01f
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.........................................................................

MPPES
Festo – MPPES – 2018-01f English 3
English – Proportional pressure regulating valve
MPPES
Documentation on the product
For all available product documentation èwww.festo.com/pk
1 Control sections and connections
2
3
4
5
6
1
5
2
3
4
6
1
1Compressed air supply port
(pressure input)
2Air supply port (pressure output)
3Exhaust port
4Electrical connection
5Through holes
for fastening
6Functional earth
connection (reverse side)
Fig. 1

MPPES
4 Festo – MPPES – 2018-01f English
2 Function and application
A built-in pressure sensor records the pressure at the air supply port. The electronic control unit com
pares the pressure value with the setpoint value. An analogue, electrical signal is issued corresponding
to the output pressure. If the actual value differs from the setpoint value, the regulating valve is actu
ated until the output pressure reaches the setpoint value.
The MPPES-... is designed to control pressure proportionately to a specified, electrical setpoint value.
Note
 Make sure that high-frequency radiation (e.g. by radio sets, mobile telephones or
other interference-emitting devices) is kept away from the MPPES-....
In this way you will avoid increased tolerances in the output pressure (for further
information refer to the EMC specifications in the Technical data chapter).

MPPES
Festo – MPPES – 2018-01f English 5
3 Requirements for product use
Note
General conditions for the correct and safe use of the product, which must be observed
at all times:
 Comply with the specified limit values (e.g. for pressures,
forces, torques, temperatures and electric voltage).
 Compare the specified limit values, e.g. for pressures,
forces, temperatures, with those of your application.
 Ensure that there is a supply of correctly prepared com
pressed air (èFig. 2)
Fig. 2
LF-..
.
LR-..
.
40 μm
 Take into account the prevailing ambient conditions (è
Fig. 3 and chap. 11 )
C%mbar
Fig. 3
 Also observe the regulations of the trade association, the German Technical Control Board (TÜV),
the VDE and relevant national regulations.
 Too much residual oil content in the compressed air will reduce the service life of the valve.
When using bio-oils (oils that are based on synthetic ester or native ester, e.g. rapeseed oil methyl
ester), the maximum residual oil content of 0.1 mg/m³ should not be exceeded
(èISO 8573-1 [7:4:2]).
 Remove all transport packaging, such as protective wax, foils, caps, cartons (except for plugs in the
pneumatic connections).
The individual materials can be disposed of in recycling containers.
 Pressurise your entire system slowly (e.g. according to Fig. 4)
to avoid any uncontrolled movements.
 Observe the warnings and instructions
– on the product
– in these operating instructions. Fig. 4
 Use the product in its original status, without any unauthorised product modifications.

MPPES
6 Festo – MPPES – 2018-01f English
4 Installation
Mechanical
 Handle the MPPES-... with care so that the electrical connection
is not damaged.
Such damage will reduce
operational reliability
Fig. 5
 Make sure there is sufficient space for the cable connection and
tube couplings.
In this way you will prevent the connecting cable from being
bent.
 Place the MPPES-... as close to the cylinder as possible.
This results in better control precision and shorter re
sponse times.
Fig. 6
 Insert the screws for mounting into the two holes 5.
 Secure the MPPES-... at the intended position.
4.1 Pneumatic
 Remove the covers from the compressed air supply ports.
 Attach the pneumatic tubing to the following connections:
– Compressed air supply port 1
– Air supply port 2
 Screw a silencer (èAccessories) into the exhaust port 3.
4.1.1 Electrical
 Note the rating plate.
A distinction is made between the following valve variants (èTab. 1).
Designation on the rating plate MPPES-…-010 MPPES-…-420
Designation Voltage variant Current variant
Electrical setpoint value DC 0 … 10 V 4 … 20 mA
Tab. 1

MPPES
Festo – MPPES – 2018-01f English 7
Warning
 Use for the electrical power supply only PELV circuits in accordance with
IEC60204-1 PELV).
 Use only power sources which guarantee reliable electrical disconnection of the
operating voltage in accordance with IEC60204-1.
Note
 Check the use of the voltage or current actual signal at the MPPES-....
 Use the following connection accessories (èAccessories):
– Socket with cable or
– Plug socket and screened cable
Note
 Wire the following connections with earth potential:
– screening on the cable end away from the MPPES
– the functional earth connection 6(blind hole in the aluminium housing èFig 8)
You can then guarantee that the specified protection class IP65 and EMC are
fulfilled.
Note
 Make sure that the cables are laid as follows:
– not squashed
– not bent
– not stretched (èFig. 8).
Fig. 7
6
Fig. 8

MPPES
8 Festo – MPPES – 2018-01f English
 Wire the MPPES-…- according to one of the connection arrangements: Fig. 9 or Fig. 10
Fig. 9 Voltage variant Fig. 10 Current variant
max. 500 Ω
Pin
no.
Voltage variant Current variant Cable colour when the socket
with cable type KMPPE-... is
used, according to accessories
1 – – WH White
2 1) Ground setpoint value1) BN Brown
3 1) Ground supply1) GN Green
4Setpoint value
DC 0 … 10 V
Setpoint value
4 … 20 mA
YE Yellow
5 – GY Grey
6Actual value -
output
DC 0 … 10 V
Actual value -
output
4 … 20 mA
PK Pink
7DC 24 V supply voltage RD Red
8 1) Ground actual value1) BU Blue
1) Internally connected
Tab. 2

MPPES
Festo – MPPES – 2018-01f English 9
5 Commissioning
1. Supply the MPPES-... with direct current
(supply voltage Uv= DC 24 V).
2. Pressurise the MPPES-... with an input pressure higher than the
maximum desired output pressure.
3. Supply current to the MPPES-... with a setpoint value signal
corresponding to the valve type (current/voltage variant).
A proportional output pressure Psis then adjusted to.
To the setpoint value signal range DC 0 ... 10 V or 4 ... 20
mA are assigned the following pressure ranges, depending
on the design (èTab. 3):
Fig. 11
Fig. 12
Type Setpoint signal range Pressure range
MPPES-...-(Pu)-Po-010 DC 0 ... 10 V Pu... Pobar
MPPES-...-(Pu)-Po-420 4 ... 20 mA
e.g. standard design
MPPES-1/4-2-010 DC 0 ... 10 V 0 ... 2 bar (èFig. 14)
e.g. special adaptation
MPPES-1/2-1,5-7-420 4 ... 20 mA 1.5 ... 7 bar (èFig. 14)
Tab. 3
For visual inspection of the control process at the MPPES-...:
 Wire the MPPES-... with the following measuring device according
to Fig. 13/Fig. 14:
 Use for the
–voltage variant a voltage measuring device
and for the
–current variant a current measuring device (ammeter).
The actual electrical value can be tracked on the display of the meas
uring device. This changes proportional to the pressure curve at port
2.
Fig. 13 Voltage
measuring device
Fig. 14 Ammeter

MPPES
10 Festo – MPPES – 2018-01f English
6 Operation
If the same output pressure is still evident despite a modified setpoint value specification:
Note
 Look for defective cables.
In the event of fractured setpoint cables (only MPPES-...-420B) or power supply
cables, the output pressure goes back to 0 bar.
When using the MPPES-...-10-...:
Warning
 Make sure the solenoid head is secured against direct contact.
The temperature of the magnet can rise in continuous operation to over +70 C.
When the MPPES-1/8-10-... is used in an ambient temperature greater than 40 C and an output pres
sure greater than 8 bar (T >40 5C and p2>8 bar):
Note
 Make sure that the MPPES-1/8-10-... for cooling the magnets is operated only with
forced convection of the ambient atmosphere.
The magnets of the types MPPES-1/8-6-... and MPPES-1/8-2-... require no addition
al cooling.
7 Disassembly and repair
On disassembly:
Note
 Switch off the following power:
– compressed air
– voltage supply
8 Maintenance and care
 Clean the MPPES-... with soap suds only, max. +60 °C.