Festo MPPES-...-010 Series Manuale utente

en Operating

instructions

8081503

2018-01f

[8081505]

Proportional pressure regulating valve

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

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

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

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

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.

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