MPA−L valve terminal
Description
Pneumatic MPA−L
Valve terminal
Type:
MPA−L−MPM−VI
MPA−L−FB−VI
Description
556 354
en 1008NH
[722 279]
Contents and general safety instructions
Original de. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Edition en 1008NH. . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
Designation P.BE−MPAL−EN. . . . . . . . . . . . . . . . . . . . . . . . . .
OrderNo. 556
354. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E (Festo AG&Co. KG, D73726 Esslingen, Federal Republic of Germany, 2010)
Internet:http://www.festo.com
E−Mail: service_international@festo.com
The copying, distribution and utilization of
this document as
well as the communication of its contents to others without
express authorization is prohibited. Offenders will be held
liable for the payment of damages. All rights are reserved,
in particular the right to carry out patent, registered design
or ornamental design registration.
Festo P.BE−MPAL−EN en 1008NH
I
Contents and general safety instructions
®
TÜV
is a registered trade mark of the respective trademark owner. . . . . . . . . . . . . . . . .
in certain countries.
VDE
®
is a registered trade mark of the respective trademark owner. . . . . . . . . . . . . . . . .
in certain countries.
Torx
®
is a registered trade mark of the respective manufacturer in. . . . . . . . . . . . . . . . .
certain countries.
II
Festo P.BE−MPAL−EN en 1008NH
Contents and general safety instructions
Contents
Intended use VII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Areas of application and approval by authorities VII . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Target group VIII . . .
Service VIII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of this manual VIII . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Important user instructions IX . . . . . . . . . . . . . . . . . . . . . . . . . . .
Terms and abbreviations XI . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1. Overview of components 1−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 The valve terminal MPA−L 1−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Valve terminal design 1−4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Electrical multi−pin connection 1−5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.1 Versions of the connector 1−6 . . . .
1.3.2 Versions of the IP protection class 1−7 . . . . . . . . . . . . . . . .
1.4 Electrical connection via CPX terminal 1−8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Description of components 1−9 . .
1.5.1 Valves 1−9 . . . . . . . . . . . . .
1.5.2 Main and additional power supply 1−10 . . . . . . . . .
1.5.3 Pilot air supply 1−11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.4 Exhaust air 1−13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.5 Sub−bases and pressure zone separation 1−13 . . . . . . . . . . . . . . . . . . . .
1.5.6 Vertical stacking 1−15 . . . . . . . . . . . . . . . .
1.5.7 Pressure regulating plates 1−16 . . . . . . . . . . . . . . . . . . . . . . .
1.6 Connecting elements 1−20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 Display and control elements 1−22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.1 Identification system" (as per catalogue) 1−23
1.7.2 Manual override (MO) 1−23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.3 Pressure regulator 1−24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7.4 Switching status
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displays for valves 1−25 . . . . . . . . . . . . . . . . . . . . . . . . .
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2. Mounting 2−1 . . . . . . . . . . . . . . . . . . . . . .
2.1 General instructions on mounting/dismantling 2−3 . . . . . . . . . . . . . . .
Festo P.BE−MPAL−EN en 1008NH
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III
Contents and general safety instructions
2.2 Installation/removal on an H−rails 2−4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Wall installation/removal 2−9 . . . . . . . . . . .
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2.3.1 Standard mounting points of the valve terminal 2−9 . . . . . . . . . . . . .
2.3.2 Additional mountings of the valve terminal 2−11 . . . . . . . . . . . . . . . . . . .
2.4 Fitting/removing optional inscription label holders 2−13 . . . . . . . . . . . . . . . . . . .
. .
.
3. Installation 3−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . .
3.1 Compressed air preparation 3−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 Operation with unlubricated compressed air 3−3 . .
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3.1.2 Operation with lubricated compressed air 3−3 . . . . . . . . . . . . . . . . . . . .
3.2 General instructions on installation 3−6 . . . . . .
3.3 Connecting the valve terminal MPA−L 3−7 . . . . . . . . . . . . . . . . . . . .
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3.3.1 Pilot control of the solenoid coils (pilot air supply) 3−7 . . . . . . . . . . . . .
3.3.2 Valve terminal MPA−L with pressure zone separation 3−8 . . . . . . . . . .
3.3.3 Setting the pressure regulating valve 3−10 . . . . . . . . . . . . . . . . . . . . . . .
3.3.4 Vacuum/low pressure operation 3−11 . . . . . . . . . . . . . . . . . . .
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3.4 Connecting the pneumatic lines 3−13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1 Installation/replacement of the
3.4.2 Laying the tubing 3−18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
threadless car tridges 3−15 . . . . . . . . . .
. . . .
3.4.3 Common pneumatic lines 3−20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Connecting the electric cables 3−21 . . . . . .
3.6 Address assignment of the valves 3−24 . . . . . . . . . . . . . . .
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3.6.1 Valve terminal MPA−L with multi−pin plug connection 3−28 . . . . . . . . . . .
3.6.2 Valve terminal MPA−L with CPX terminal 3−28 . . . . . . .
4. Commissioning 4−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 General Information 4−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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4.1.1 Prior to commissioning 4−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.2 Pressure build−up in the
overall supply 4−3 . . . . . . . . . . . . . . . . . . . . . .
4.2 Checking the valves and the valve/actuator combination 4−6 . . . . . . . . . . . . . . .
4.3 Mounting/removing the optional manual
override cover cap 4−11 . . . . . . . . . . . .
.
IV
Festo P.BE−MPAL−EN en 1008NH
Contents and general safety instructions
4.4 Troubleshooting 4−13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.1 Switching status
4.4.2 Impairment of functions 4−13 . . . . . . . . . . . . . . . . . . . . . . . . . . .
indicator of the solenoid coils 4−13 . . . . . . . . . . . . . . .
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4.4.3 Operating states of the pneumatic system 4−15 . . . . . . . . . . . . . . . . . . .
5. Conversion and maintenance 5−1 . . . . . . . . . . . . . . . .
5.1 General preventive action 5−3 . . . . . . . . . . . . . . . . . . . . . . . . . .
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5.2 Maintaining the valve terminal MPA−L 5−4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.1 Clean
5.2.2 Replacing valves or cover plates 5−5 . . . . . . . . . . . . . .
or replace flat plate silencer 5−4 . . . . . . . . . . . . . . . . . . . . . . . . . .
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5.3 Conversion of the MPA−L valve terminal 5−7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3.1 Tie rod system 5−7
5.3.2 Exchange sub−base, supply plate or extend or exchange
right−hand end plate 5−11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3.3 Replace the electronic module 5−14 . . . . . . .
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5.3.4 Conversion between ducted and unducted exhaust air 5−15 . . . . . . . . .
5.3.5 Conversion between internal and external pilot air supply 5−16 . . . .
. . .
5.3.6 Converting the valve terminal MPA−L to different pressure zones 5−18 .
5.3.7 Conversion of the left−hand end plate of IP40 on IP65 cover 5−19 . . . . .
5.3.8 Conversion of the outlet direction of the multi−pin cable 5−19 . . . . . . . .
5.3.9 Conversion of the end plate
between multi−pin and
CPX connection 5−22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Replace the pneumatic interface 5−24
A. Technical appendix A−1 . . . . . . . . . . . . . .
A.1 Technical data A−3 . . . . . . . . . . . . . . . . .
A.2 Festo accessories A−12 . . . . . . . . . . . . . . . .
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B. Supplementary overview of components B−1 . . . . . . . . . . . . . . .
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B.1 Overview of valve position components B−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C. Index C−1 . . . .
Festo P.BE−MPAL−EN en 1008NH
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V
Contents and general safety instructions
VI
Festo P.BE−MPAL−EN en 1008NH
Contents and general safety instructions
Intended use
The MPA valve terminals are intended for fitting into a
machine or automated system and must be used exclusively
as follows:
In industrial applications
In original status without unauthorised modifications.
Only the conversions or modifications described in the
documentation supplied with the product are permitted.
In perfect technical condition
If used together with additional
ponents, such as actuators, the specified limits for pressures,
temperatures, electrical data, torques etc. must be observed.
In addition to the safety instructions in this manual always
observe the regulations of the trade associations and the
German Technical Control Board (TÜV) and the VDE condi
tions or corresponding national conditions on−site.
Areas of application and approval by authorities
The product fulfils the requirements of the EU directives and
is marked with the CE marking symbol.
Standards and test values, which the product must comply
with and fulfil, can be found in the section A.1 Technical
data". The product−relevant EC directive can be found in the
declaration of conformity.
commercially available com
Festo P.BE−MPAL−EN en 1008NH
VII
Contents and general safety instructions
Target group
This manual is intended exclusively for technicians trained in
control and automation technology.
Service
Please consult your local Festo repair service if you have any
technical problems.
Structure of this manual
This manual contains general basic information on fitting,
installing and commissioning the valve terminal MPA−L, as
well as on its mode of operation.
VIII
Festo P.BE−MPAL−EN en 1008NH
Contents and general safety instructions
Important user instructions
Danger categories
This description contains instructions on the possible dangers
which can arise if the product is not used correctly. These
instructions are marked (Warning, Caution, etc.), printed on
a shaded background and marked additionally with a picto
gram. A distinction is made between the following danger
warnings:
Warning
... means that failure to observe this instruction may result
in serious personal injury or material damage.
Caution
... means that failure to observe this instruction may result
in personal injury or material damage.
Festo P.BE−MPAL−EN en 1008NH
Note
... means that failure to observe this instruction may result
in material damage.
Additio na l ly, the following pictogram designates text passages,
which describe activities with electrostatically sensitive devices:
Electrostatically sensitive devices: inappropriat e handling can
result in damage to components.
IX
Contents and general safety instructions
Identification of special information
The following pictograms designate text passages that
contain special information.
Pictograms
Information:
Recommendations, tips and references to other sources of
information.
Accessories:
Information on necessary or useful accessories for the
Festo product.
Environment:
Information on environmentally friendly use of Festo
products.
Text designations
· Bullet points indicate activities that may be carried out
in any sequence.
1. Numerals indicate activities that must be carried out in
the sequence specified.
Arrowheads indicate general listings.
X
Festo P.BE−MPAL−EN en 1008N H
Contents and general safety instructions
Terms and abbreviations
The following product−specific terms and abbreviations are
used in this manual:
Term/abbreviation
Blanking plate Plate without valve function for sealing vacant valve positions on
Cartridge fitting Plug connector for connection of the power supply cables to the valve
Components Common term for pneumatic interface, multipin sub−base, exhaust
Electronics module Module in the sub−base with an LED and solenoid coil management
End plate Extreme right−hand plate with/without connections for power and
Exhaust plate Plate for ducted exhaust with connection 3/5
MO Manual override
MPA1 Sizes of the solenoid valves: MPA1 = 10 mm wide
Multi−pin plug connection Electrical connection for controlling the valve terminal MPA−L
Pneumatic interface The pneumatic interface is the interface between the modular
Pneumatic module Module consisting of pneumatic Sub−base, electronics module,
Meaning
sub−bases (vacant position).
terminal
plate, silencer, pneumatic sub−base or pneumatic supply plate, end
plate, pressure regulator plate, solenoid valve and cover plate
pilot pressure and exhaust air, and extreme left−hand plate with multi−
pin plug connection and CPX terminal as well as holes for H−rail and
wall mountings.
electrical peripherals of the CPX terminal and the MPA−L pneumatics
solenoid valves or cover plates
Solenoid valves Monostable solenoid valve with a solenoid coil, double−solenoid or
mid−position valves with two solenoid coils and additional variants
Sub−base Plate with working lines 2 and 4 for the mounting of valves and verti
cal stackings
Supply plate Plate for (additional) supply of compressed air to the solenoid valves,
e.g. with several pressure zones.
Festo P.BE−MPAL−EN en 1008NH
XI
Contents and general safety instructions
Term/abbreviation Meaning
Valve terminal MPA−L Modular performance valve manifolds light valve terminal (Type 34)
Vertical stacking Pneumatic components that are installed between the sub−base and
multi−pin plug connection or for CPX−Terminal
the solenoid valve
Tab.0/1: Product−specific terms and abbreviations
XII
Festo P.BE−MPAL−EN en 1008NH
Overview of components
Chapter 1
1−1Festo P.BE−MPAL−EN en 1008NH
1. Overview of components
Contents
1. Overview of components 1−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 The valve terminal MPA−L 1−3 . . . .
1.2 Valve terminal design 1−4 . . . . . . . . . .
1.3 Electrical multi−pin connection 1−5 . . . . . . . . . . . . . .
1.3.1 Versions of the connector 1−6 . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2 Versions of the IP protection class 1−7 . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Electrical connection via CPX terminal 1−8 . . . . .
1.5 Description of components 1−9 . . . . . . . . . . . . . . . . . . . . . .
1.5.1 Valves 1−9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.2 Main and additional power supply 1−10 . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.3 Pilot air supply 1−11
1.5.4 Exhaust air 1−13 . . . . . . .
1.5.5 Sub−bases and pressure zone separation 1−13 . . . . . . .
1.5.6 Vertical stacking 1−15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.7 Pressure regulating plates 1−16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Connecting elements 1−20 . . . . . . . . .
1.7 Display and control elements 1−22 . . . . . . . . . . . .
1.7.1 Identification system" (as per catalogue) 1−23 . . . . . . . . . . . . . . . . . . .
1.7.2 Manual
1.7.3 Pressure regulator 1−24 . . . . . . . . . . .
1.7.4 Switching status displays for valves 1−25 . . . . . . . . . . . . . . . . .
override (MO) 1−23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1−2
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
1.1 The valve terminal MPA−L
Festo supports your automation tasks at machine level with
the valve terminal MPA−L. The modular structure of the valve
terminal MPA−L enables you to match this valve terminal opti
mally to your machine or system.
The valve terminal MPA−L provides the following connections:
Common ducts for supply and exhaust air
Electric signals from all
solenoid coils
Working lines (2) and (4) are provided for each valve position
on the individual pneumatic sub−bases. The valves are sup
plied with compressed air (operating pressure and pilot pres
sure) via the common channels and connections in the basic
components. The exhaust air (from the valves and the pilot
exhaust air)
is also exhausted via these common channels.
Further components for compressed air supply are also avail
able, e.g. in order to supply pressure zones.
The valve terminal MPA−L is equipped with current reduction.
The nominal current of the solenoid coils is then reduced
after the high−current phase (switching procedure). The cur
rent reduction offers
the following advantages:
The valve terminal MPA−L has a lower power consumption
The power unit for the voltage supply to the valve ter
minal MPA−L can be designed more economically depend
ing on the individual case
The solenoid coils have less leakage power and produce
less waste heat
Festo P.BE−MPAL−EN en 1008NH
1−3
1. Overview of components
1.2 Valve terminal design
The valve terminal MPA−L consists of the following pneumatic
and electric components: The most important components
are shown in Fig.1/1.
1
2
3
1 Multipin sub−base with cover (here:
IP40 cover)
2 Pneumatic supply plate with exhaust
plate for ducted exhaust air (3/5)
3 Sub−base with electronic module and
valve or blanking plate
5
4
4 Sub−bases, 4 off set, with common
electronic module and valves or
blanking plates
5 Vertical stacking (here: Pressure
regulator plate with installed valve and
optional pressure gauge)
6 Right−hand end plate
6
Fig.1/1: Main components of the valve terminal MPA−L
1−4
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
The following operating modes can be used independently
of valve type:
Standard operation with one or more pressure zones
Reversible operation with compressed air supply via
connections (3), (5) and exhaust via port (1)
Low−pressure operation at 0 ... 3 bar
Vacuum operation at −0.9 ... 0 bar
1.3 Electrical multi−pin connection
The electrical connection of the solenoid coils is made cen
trally via a multi−pin plug in the left−hand end plate, which
is available in various variants for the he valve terminal MPA−L
(see Tab.1/1). One or two solenoid coils per v alve position
can be controlled. Each solenoid coil occupies one pin of
multi−pin plug.
the
Festo P.BE−MPAL−EN en 1008NH
1−5
1. Overview of components
1.3.1 Versions of the connector
Multi−pin connection,
Type of left−hand end plate
Plug type Number of controllable
solenoid coils
Sub−D with 9pins 1, 2, 3, ... 8
Sub−D with 25pins 1, 2, 3, ... 24
Sub−D with 44pins 1, 2, 3, ... 32
Terminal strip
1)
1, 2, 3, ... 32
Ribbon cable
1) Note that all cables to a cable harness must be grouped to ensure EMC conformity.
2) Note that all 0 V−/24V supply cables must be used and grouped to a cable harness.
2)
1, 2, 3, ... 32
Tab.1/1: Multi−pin plug types of the left−hand end plates
1−6
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
1.3.2 Versions of the IP protection class
For variants with sub−D plugs the multipin connection can
be implemented with various cover types (see Tab.1/2).
Multipin sub−base
Cover types for sub−D plug
IP65 cover:
closed cover, Protection class IP65, with pre−prepared cable
Exclusively for the sub−D plug with 25−/44 pins.
IP40 cover:
open cover, protection class IP40
(In this case: Sub−D with 25 pins
Tab.1/2: Multipin sub−base and cover types
.
Festo P.BE−MPAL−EN en 1008NH
1−7
1. Overview of components
1.4 Electrical connection via CPX terminal
The electrical interface of the solenoid coils on the CPX ter
minal is made centrally via the pneumatic interface (see
Fig.1/2). Per valve position one or two solenoid coils and
within the valve terminal MPA−L maximum 32solenoid coils
can be controlled via the CPX terminal.
1 CPX bus node
2 Pneumatic inter
face
1
3 Optional: addi
tional CPX
module
4
4 Multipin sub−
base of the
CPX terminal
2
3
Fig.1/2: Electric components of the valve terminal MPA−L with CPX terminal
1−8
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
1.5 Description of components
1.5.1 Valves
The valve terminal MPA−L can be fitted with 2x2/2−, 2x3/2−way
valves, 5/2−way valves and 5/3−way valves and further valve
types (see Tab. 1 /3 ).
Valve labelling The valves on the MPA−S valve terminal are marked by
identification codes (see Tab.1/3). By means of this identifi
cation on the top of the valve, you can ascertain the
ment fitted on your valve terminal MPA−L.
equip
ID code
B 5/3−way valve, mid−position open
D Two monostable 2/2−way valves, normally closed, pneumatic spring return
DS Two monostable 2/2−way valves, normally closed, pneumatic spring return
I 5/3−way valve, mid−position exhausted
R 5/3−way valve, mid−position closed
H Two monostable 3/2−way valves, control side 12 normally open, control side 14
HS Two monostable 3/2−way valves, control side 12 normally open, control side 14
I Tw o 2/2−way valves, normally closed, pneumatic spring return
J 5/2−way double pilot valve
K Two monostable 3/2−way valves, normally closed, pneumatic spring return
KS Tw o monostable 3/2−way valves, normally closed, pneumatic spring return
Valve
normally closed, pneumatic spring return
normally closed, pneumatic spring return
With dual−pressure operation:
Operating pressure via connection (1) or connection (5)
With vacuum operation:
Operating pressure at connection (1), Vacuum at connection (5) (e.g. for
vacuum switching with ejector pulse)
Festo P.BE−MPAL−EN en 1008NH
1−9
1. Overview of components
ID code Valve
M Monostable 5/2−way valve
N Two monostable 3/2−way valves, normally closed, pneumatic spring return
NS Two monostable 3/2−way valves, normally open, pneumatic spring return
W Monostable 3/2−way valve, open in basic position, external compressed air
X Monostable 3/2−way valve, closed in basic position, external compressed air
L Blanking plate for sealing an vacant valve position
supply via connection 2
supply via connection (4)
Tab.1/3: Identification codes of the valves
Further information on the valves can be found in
AppendixB.
1.5.2 Main and additional power supply
The main supply of the valve terminal with operating pressure
can be made via a pneumatic supply plate (see Fig.1/3) or
via the right−hand end plate with lateral ports (Tab.1/4
below).
1−10
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
1 Supply plate
2 Exhaust plate for
ducted exhaust
air
1.5.3 Pilot air supply
2
1
Fig.1/3: Pneumatic supply plate
The pneumatic supply plate can also be used for additional
power supplies. These are, forexample, necessary in the case
of valve terminals operated with several pressure zones or
when a large number of valves on the valve terminal are
switched simultaneously to flow.
Festo P.BE−MPAL−EN en 1008NH
The pilot control of the solenoid coils is supplied with internal
or external pilot air. This pilot air is made available for the
complete valve terminal (also via the pressure zones) via the
right−hand end plate (see Tab.1/4).
A selector plate on the right−hand end plate makes it possible
to branch the pilot
take it from the separate supply via the port (12/14).
Note
Internal pilot air supply is only permitted if the operating
pressure of the last pressure zone (at the right−hand end
plate) is between 3 and 8 bar .
air internally from the supply port (1) or to
1−11
1. Overview of components
End plate type Properties
End plate without
connections
at side
space−saving, low end plate with front, round selector
plate
separate pneumatic supply plate required for the valve
terminal
End plate with
exhaust ports
at side
high end plate with upper, square selector plate
supply connections (1), (3) and (5) are integrated at the
side
Tab.1/4: Right−hand end plate versions
The way in which the pilot control of your valve terminal
is set can be determined from Tab.1/5. The conversion
between the internal and external pilot air supply is described
in Chapter 5.3.5.
1−12
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
Pilot control variant
Properties Internal pilot air supply External pilot air supply
Identification on the end
plate/
Setting of the selector plate
Type of pilot air supply Internally from the supply
Requirement The operating pressure must be
Int" Ext"
port(1) distributed operating
pressure
in the range 3...8bar and be
free of pressure fluctuations.
Tab.1/5: Features of the pilot control variants
1.5.4 Exhaust air
The exhaust (3) and (5) of the air is exhausted together via
the flat plate silencer and the exhaust plate or separately via
the right−hand end plate with ports at the side.
The pilot exhaust air (82/84) is led to a connection on the
right−hand end plate and can either be ducted there
hausted via a silencer.
1.5.5 Sub−bases and pressure zone separation
Externally via the pilot connection
(12/14) supplied, separately
controllable pressure (3...8 bar )
The operating pressure can be
below 3bar and above 8bar ,
so long as separately controlled
pilot pressure (3...8bar) is
availabl e.
or ex
Festo P.BE−MPAL−EN en 1008NH
The valves of valve terminal MPA−L are supplied pneumati
cally via the sub−bases and via the electronic module that is
installed in the sub−base (see Fig.1/4).
In addition to the individual sub−bases there are also the 4 off
sub−bases with common 4 off electronic module.
1−13
1. Overview of components
1 Sub−base
2 Electronics
module
2
1
Fig.1/4: Sub−base with electronic module
In addition valves within a valve terminal MPA−L can be sup
plied with different pressures by creating different pressure
zones. The separation of the pressure zones is achieved by
special sub−bases. In each case the valve mounted to the
right of the special sub−base belongs to the next (following
to the right) pressure zone, which is the valve mounted on the
special sub−base in the current pressure zone.
The sub−bases with integrated pressure zone separation
are in various versions with corresponding identification
(see Tab.1/6):
on
1−14
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
Sub−base design MPA1
Supply duct (1) separated
Exhaust ducts (3) and (5) separated
Supply channel (1) and exhaust
ducts (3) and (5) separate
Type: VMPAL−AP−...−T1
Type: VMPAL−AP−...−T135
Type: VMPAL−AP−...−T135
Tab.1/6: Variants of the sub−bases with integrated pressure zone separation
Pressure zone separation of the pilot channels (12) and (14)
is not provided, as on the valve terminal MPA−L the air supply
for the pilot control of the valves is supplied centrally via the
right−hand end plate.
1.5.6 Vertical stacking
Festo P.BE−MPAL−EN en 1008NH
You can fit further pneumatic components to each valve
position between the sub−base and the valve. These vertical
stackings enable you to implement certain additional func
tions as desired.
1−15
1. Overview of components
Components
Tab.1/7 shows the main structure and possible components
of the vertical stacking.
Directional control
valves
Vertical stacking,
optional
Sub−base Type VMPAL−AP−... with electronics module
See chapter 1.5.1.
Pressure regulator plate
Type VMPA...B8−R... C2−C−... (Pressure
gauge optional), see Chapter 1.5.7
Pressure shut−off plate, Type VMPA1−HS
Tab.1/7: Components of the vertical stacking
1.5.7 Pressure regulating plates
Mode of operation A pressure regulator plate with adjustable pressure regulator
can be installed between the sub−base and the valve in order
to control the force of the connected actuators. This pressure
regulator maintains an essentially constant output pressure
(secondary side) independent of supply pressure (primary
side) and air consumption.
Identification The pressure regulator plates of
marked on the valve terminal MPA−L with the Ident. code.
This is marked on the side of the pressure regulator plate.
Using Tab.1/8 you can identify the pressure regulator plates.
1−16
the vertical stacking are
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
ID
Vertical stacking component
code
PF Pressure regulator plate for connection (1), supply pressure 6 bar
PH Operating pressure regulator plate for connection (2), supply pressure 6 bar
PG Work pressure regulator plate for connection (4), supply pressure 6 bar
PA Pressure regulator plate for connection (1), supply pressure 10 bar
PC Operating pressure regulator plate for connection (2), supply pressure 10 bar
PB Work pressure regulator plate for connection (4), supply pressure 10 bar
T Pressure gauge for pressure regulator plate
Tab.1/8: Identification of the regulator plates in the type code
The circuit symbol of the pressure regulating valve is
provided in appendix B, Tab.B/5.
P pressure regulating valve(identification PF, PA)
Supply process The P pressure regulating valve regulates the pressure in
front of the valve in duct (1)/(P). This provides the same
regulated air pressure in channels (2) and (4).
Exhaust procedure The exhaust flow is from channel (2) to channel (3) and from
channel (4) to channel (5) through the pressure regulator
the valve terminal.
plate to
The advantages of this pressure regulating valve are:
The pressure regulating valve is not affected by exhausting,
since the pressure is regulated upstream of the valve.
The pressure regulating valve can always be adjusted
because the pressure from the valve terminal is always
present.
Festo P.BE−MPAL−EN en 1008NH
1−17
1. Overview of components
Application examples:
An equal air pressure is required at working lines (2)
and (4).
A lower air pressure (e.g.3bar) than the operating pres
sure present on the valve terminal (e.g.8bar) is required.
A or B pressure regulator (identifier PH, PG, PC, PB)
Supply process The work or operating pressure regulator regulates the
relevant pressure of the air (see 1 in Tab.1/9) when the
pressure medium has flowed through the valve. The exhaust
air is passed through the pressure regulator plate and is
switched to the relevant exhaust duct in the valve (see 2
in Tab.1/9).
Exhaust
procedure During exhausting the air is passed unregulated through the
valve and the pressure regulator plate to the valve terminal
(see 3 in Tab.1/9).
Pressure
regulator
Pressurizing Exhaust process:
regulated
pressure
of the work
exhaust vented via the
pressure regulator plate 2
air 1
A pressure
regulating
valve
B pressure
regulating
valve
in channel (4) from channel (2) to channel (3) from channel (4) to channel (5)
in channel (2) from channel (4) to channel (5) from channel (2) to channel (3)
Tab.1/9: Mode of operation of the A and B pressure regulator
Restrictions:
The exhaust flow in the regulating direction is limited by
the pressure regulating valve.
1−18
unregulated exhaust
vented via the regulator 3
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
The pressure of the air in channel (2) can only be set and
read on the pressure gauge when the valve is in the
switch position: Flow from (1) to (2).
Application examples:
If different air pressures are required at ports (2) and (4)
instead of the operating pressure of the valve terminal.
Fig.1/5
shows the following switching position of the operat
ing pressure regulator:
The air is passed from channel (1) through the pressure regu
lator plate and the valve to the operating pressure regulator,
where it is regulated and then passed to connection (2) of
the sub−base. The unregulated exhaust air is then fed
channel (4) through the pressure regulator plate and then to
channel (5) and vented.
via
2
1
4
1 Control regulator within the pressure
regulator plate
2 Valve
Fig.1/5: B pressure regulating valve
Festo P.BE−MPAL−EN en 1008NH
3
3 Pressure regulator plate
4 Sub−base
1−19
1. Overview of components
1.6 Connecting elements
Pneumatic elements The following pneumatic connecting elements can be found
on the valve terminal MPA−L:
1
2
1 Common exhaust port (3/5) Valve"
2 Pilot air connections (12/14) and
(82/84) dependent on the design
of the right−hand end plate (see
Chapter1.5.3)
Fig.1/6: Pneumatic connecting elements
1−20
3
4
3
3 Supply connections Operating
pressure" (1)
4 Working lines (2) and (4), per valve
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
Electrical elements The following electrical connecting elements can be found
on the pneumatic components of the valve terminal MPA−L:
1 Sub−D multipin
plug with cable
2 Connection for
functional earth
3
3 Sub−D connection
(here: 25−Pin
versions)
2
Fig.1/7: Electric connecting elements of valve terminal MPA−L with multipin connection
1
Festo P.BE−MPAL−EN en 1008NH
1−21
1. Overview of components
1.7 Display and control elements
The following connecting and control elements can be found
on the valve terminal MPA−L:
1
5
1
switching status indicator (yellow LEDs)
of the valves
3 Inscription panel
4 Slot for inscription label holder
2 Manual override (per pilot solenoid
coil, non−detenting or detenting)
(see Chapter 2.4)
5 Pneumatic interface fault LED
(see Chapter 3.6.2)
Fig.1/8: Display and control elements on the example of the valve terminal with CPX
terminal
2
3
4
1−22
Information on the electrical connection and display compo
nents of the CPX bus node is provided in the corresponding
Electronics description" (see the system description for your
CPX terminal, table Descriptions of the CPX
terminal").
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
1.7.1 Identification system" (as per catalogue)
Alternatively or supplementary to the inscription labels
attached to sub−bases, inscription labels with large surface
areas can be attached to the pneumatic interface.
Information about corresponding accessories can be found
in the Festo Catalogue (see www.festo.com\catalogue).
1.7.2 Manual override (MO)
The manual override (MO) enables the valve to be actuated
when not electrically activated or energised. You only need
to switch on the compressed air supply. You should use the
manual override especially when commissioning the pneu
matic system, in order to check the function and operation
of the valve or the
Non−detenting actuation The valve is activated by pushing the manual override.
On release of the manual override the spring−loaded
valve switches automatically from the switch position to
the normally open position.
valve−actuator combination.
Detenting actuation By turning the manual override clockwise the switch position
by hand.
1−23
Festo P.BE−MPAL−EN en 1008NH
can be detented. It remains actuated until it is reset
These basic functions of the manual override can be changed
by installing a corresponding manual override cover cap:
With a cover for manual override, code: N, locking is pre
vented. The manual override can then only be operated by
non−detenting.
With a cover for manual override, code: V, the manual over
ride
can be safeguarded against undesired operation
The operation of the manual override is described in
Chapter4.2.
1. Overview of components
1.7.3 Pressure regulator
On the pressure regulator plate you will find the following
display and control elements:
Note
A manually actuated valve (by manual override) cannot be
actuated electrically. Conversely, an electrically actuated
valve cannot be activated using the mechanical manual
override. The valve only returns to the rest position when
both actuations are reset.
1 Adjusting screw
for pressure
regulator
plate MPA1
1
2
2 Pressure gauge
(optional)
3 Connection for
pressure gauge
(can be tilted 90)
3
Fig.1/9: Display and control element of the pressure regulator plates
1−24
Festo P.BE−MPAL−EN en 1008N H
1. Overview of components
1.7.4 Switching status displays for valves
There is an LED and a manual override for each solenoid coil.
The position of the LED and MO for the relevant solenoid coil
is as follows:
2
1
2
1
1 LED and manual override for valve
solenoid coil 14
Fig.1/10: The assignment of LEDs and manual overrides to the solenoid coils
12 12 12 12
14 14 14 14 14 14 14 14
2 LED and manual override for valve
solenoid coil 12
The switching states of the solenoid coils and their signifi
cance can be found in Chapter 4.4.1.
Festo P.BE−MPAL−EN en 1008NH
1−25
1. Overview of components
1−26
Festo P.BE−MPAL−EN en 1008N H
Mounting
Chapter 2
2−1Festo P.BE−MPAL−EN en 1008NH
2. Mounting
Contents
2. Mounting 2−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 General instructions on mounting/dismantling 2−3 . . . . . . . . . . . . . . . . . . . . . . .
2.2 Installation/removal on an H−rails 2−4 . . . . . . . . . . . . . . . .
2.3 Wall installation/removal 2−9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 Standard mounting points of the valve terminal 2−9 . . . . . . . . . . . . . . .
2.3.2 Additional mountings of the valve terminal 2−11 . . . . . . . . . . . .
2.4 Fitting/removing optional inscription label holders 2−13 . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . .
. . . . . . .
2−2
Festo P.BE−MPAL−EN en 1008N H
2. Mounting
2.1 General instructions on mounting/dismantling
Warning
Uncontrolled movements of the connected actuators and
loose tubing can cause injury to persons and/or damage to
property .
Before carrying out mounting, installation and maintenance
work, switch off the following:
Compressed air supply
The operating and load voltage supplies.
Note
Handle all modules and components of the valve terminal
MPA−L with great care. Note especially the following:
The specified torques must be complied with.
Electrostatically sensitive devices.
Therefore, do not touch any contact surfaces.
Festo P.BE−MPAL−EN en 1008NH
Note
Mount the valve terminal MPA−L so that there is sufficient
space for heat dissipation and ensure that the maximum
limits for temperatures are observed (see Technical
specifications").
2−3
2. Mounting
2.2 Installation/removal on an H−rails
The valve terminal MPA−L is suitable for fitting onto an H−rail
(support rail as per EN 60715). There is a guide groove on the
back for hanging the valve terminal onto the H−rail.
Caution
H−rails with mounted valve terminals can break if they are
subjected to vibration exceeding severity level 1:
0.15 mm Amplitude at 15 ... 58 Hz
2g acceleration at 58 ... 150 Hz
This can damage the valve terminal, your machine or your
system.
· In this case use wall mounting.
· Note the permitted values for vibration and shock
(see Tab.A/2 in Appendix A).
2−4
Caution
H−rail mounting without an H−rail clamping unit is not per
mitted.
· Secure the valve terminal MPA−L using the H−rail clamping:
against sliding down with the retaining screw intended for
this purpose (see Tab.2/1 and Fig.2/1)
against unintentional loosening/opening.
In order to mount the valve terminal onto an H−rail you will
require the following mounting kits:
for valve terminal MPA−Ls with multi−pin plug connection:
Mounting,
type CPA−BG−NRH. This kit contains 2 M4x10
screws and 2 clamping elements.
for valve terminal MPA−Ls with CPX terminal: Mounting,
type VMPAF−FB−BG−NRH. This set consists of 3 clamping
components, two M4x12 screws and one M4x10 screw.
Festo P.BE−MPAL−EN en 1008N H
2. Mounting
Valve terminal variant Mounting points
MPA−L with multi−pin plug connection
1
MPA−L with CPX terminal
1
2
Tab.2/1: Mounting points for H−rail mounting
Mounting Proceed as follows:
1. Make sure that the mounting surface can support
the weight of the valve terminal MPA−L (weights see
appendix A, Tab.A/1).
Required mounting of the H−rail
clamping units:
In the right−hand end plate
and the multipin sub−base:
each with one M4 screw 1
and each with a clamping
1
component
Required mounting of the H−rail
clamping units:
In the end plates:
each with one M4 screw 1
and each with a clamping
component
1
In the pneumatic interface:
one M6 screw 2 and a
clamping component
Festo P.BE−MPAL−EN en 1008NH
2. Mount the H−rail (DIN mounting rail EN60715 − 35x7.5;
width 35mm, height 7.5mm). Make sure there is suffi
cient space for connecting the power supply
cables and
tubing. Fasten the H−rail(see Fig.2/1) to the mounting
surface approximately every 100 mm.
3. Mount the H−rail clamping units at all required mounting
points (see Tab.2/1). Make sure that the clamping ele
ment (see Fig.2/1, 3) lies horizontally to the H−rail.
2−5
2. Mounting
1 H−rail
2 Retaining screw
of the H−rail
clamping unit
3 Clamping
component of the
H−rail clamping
unit
4 Mounting surface
4. Hang the valve terminal MPA−L onto the H−rail
(see Fig.2/1, arrow A).
5. Swing the valve terminal MPA−L onto the H−rail
(see Fig.2/1, arrow B).
(A)
1
2
3
Fig.2/1: Fitting the valve terminal MPA−L onto a H−rail
6. Turn the clamping components to the mechanical lock
vertically behind the H−rail (see Fig.2/2, Arrow A) and
tighten the locking screws of the H−rail clamping compo
nent with1.3Nm ±10%, to protect the v alve terminal
MPA−L against slipping or sliding down.
2−6
4
(B)
Festo P.BE−MPAL−EN en 1008N H
2. Mounting
1 H−rail
2
2 MPA−LConnection
blocks
3 Vertically rotated
clamping compo−
nent of the H−rails
clamping units
1
(A)
3
Fig.2/2: Rear view: Fitting the valve terminal M PA−L onto a H−rail
Additional information on H−rail mounting of the valve
terminal MPA−L with CPX terminal can be found in the
CPX system description.
Dismantling Proceed as follows:
Festo P.BE−MPAL−EN en 1008NH
1. Loosen the retaining screw of the H−rail clamping unit
(for position of the screws, see Tab.2/1). Make sure that
the clamping components
2. Swing the valve terminal MPA−L forwards from the H−rail
(see Fig.2/3, arrow A).
3. Lift the valve terminal MPA−L off the H−rail (see Fig.2/3,
arrow B).
are horizontal to the H−rail.
2−7
2. Mounting
1 H−rail
2 Retaining screw
of the H−rail
clamping unit
3 Clamping
component of the
H−rail clamping
unit
4 Mounting surface
(A)
1
2
3
4
(B)
Fig.2/3: Dismantling the valve terminal MPA−L
2−8
Festo P.BE−MPAL−EN en 1008N H
2. Mounting
2.3 Wall installation/removal
Note
Installation on uneven, flexible surfaces can damage the
valve terminal MPA−L.
· Mount the valve terminal MPA−L only on flat, torsionally
rigid surfaces.
Note
The overloading of mounting holes or natural resonance
when vibrating can cause damage.
· In addition to the information about standard mounting
points in Chapter 2.3.1 also observe the information
about additional mounting points in Chapter 2.3.2.
2.3.1 Standard mounting points of the valve terminal
The end plates, the multipin sub−base and pneumatic
interface contain holes for fitting the terminal onto a wall
(see Tab.2/2).
Festo P.BE−MPAL−EN en 1008NH
2−9
2. Mounting
Variant Mounting points
Valve terminal MPA−L with multi−pin plug connection
2
1
2
1
Valve terminal MPA−L with CPX terminal
2
1
2
1
3
Tab.2/2: Standard mounting points for wall mounting
Mounting Proceed as follows:
1. Make sure that the mounting surface is flat and that it
can support the valve terminal MPA−L (weights see
appendix A, Tab.A/1).
Multipin sub−base:
two M4 1 or M6 screws 2
2
each
Right end plate:
two M4 1 or M6 screws 2
1
each
2
1
End plates:
two M4 1 or M6 screws 2
2
each
Pneumatic interface:
two M6 screws 3
1
2
1
2−10
2. Make sure there is sufficient space for connecting the
power supply cables and tubing.
3. Drill mounting holes in the mounting surface.
4. Fasten the
sufficient length to the mounting surface (see Tab.2/2).
valve terminal MPA−L with M4 or M6 screws of
Festo P.BE−MPAL−EN en 1008N H
2. Mounting
Dismantling Proceed as follows:
1. Prevent a hanging−mounted valve terminal MPA−L from
falling down before you loosen it from the mounting
surface.
2. Loosen the mounting screws (see Tab.2/2).
3. Remove the valve terminal MPA−L from the mounting
surface.
2.3.2 Additional mountings of the valve terminal
Valve terminal MPA−L The valve terminal MPA−L has standard mounting points for
wall mounting.
The use of addit i o n a l mountings, type VMPAL−BD, is necessary
under the following conditions (Tab.2/3):
For increased vibration/shock loads (limits for vibrations
and shock see Appendix A, Tab. A/2
and:
CPX terminal A
Festo P.BE−MPAL−EN en 1008NH
For valve terminal MPA−Ls that are longer than 200 mm,
additional mountings must be used every 130 mm.
CPX terminal on the valve terminal MPA−L with four or more
interlinking blocks must be fitted with additional mounting
clips, type CPXBG−RW−..., (see CPX system description).
2−11
2. Mounting
Variant Mounting points
Valve terminal MPA−L with multi−pin plug connection
1
Valve terminal MPA−L with CPX terminal
1
Tab.2/3: Additional mounting for wall mounting
Mounting Proceed as follows:
For each mounting,
type VMPAL−BD, half of which
is clipped into two neighbour
ing sub−bases (see also
Information in Appendix A,
Tab.A/2):
one M6 screw 1
2−12
1. Attach the mounting to the rear lower surface in such a
way that each half of it lies on two adjacent connection/
supply plates.
2. Rotate (1.) the mounting in the direction of the slots of the
connection/supply plates (see Fig.2/4).
3. Press up (2.) the mounting on
the connection/supply
plates until the hooks snap into the slots.
Festo P.BE−MPAL−EN en 1008N H
2. Mounting
1 Mounting,
Type VMPAL−BD
2 Slots in
connection and
supply plates
1
2
Fig.2/4: Assembly of an additional mounting
1.
2.
2.4 Fitting/removing optional inscription label holders
For identification of the valves or the working ports labels
can be attached to the sub−bases, if corresponding Inscrip
tion label holders type VMPAL−ST−AP−10, are fitted.
Information about accessories can be found in the Festo
Catalogue (see www.festo.com\catalogue).
Mounting Proceed as follows:
Festo P.BE−MPAL−EN en 1008NH
2−13
2. Mounting
1
1. Press the label holder in the recess of the sub−base
(see Fig.2/5), until it engages.
2. Press the label from above into the label holder.
1 Support for label
holder on the
sub−base
2 Label holder, type
VMPAL−ST−AP−10
3 Label,
Type IBS 6x10
Fig.2/5: Fitting the identification plate
Dismantling Proceed as follows:
· Remove the label holder from the sub−base, using a cross
slot screwdriver if necessary, (see Fig.2/6) by suppor ting
on the valve located above.
1 Label holder with
label
3
1
2
Fig.2/6: Dismantling the label holder
2−14
Festo P.BE−MPAL−EN en 1008N H
Installation
Chapter 3
3−1Festo P.BE−MPAL−EN en 1008NH
3. Installation
Contents
3. Installation 3−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Compressed air preparation 3−3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 Operation with unlubricated compressed air 3−3 . . .
3.1.2 Operation with lubricated compressed air 3−3 . . . . . . . . . . . . . . . . . . . .
3.2 General instructions on installation 3−6 . . . . . . . .
3.3 Connecting the valve terminal MPA−L 3−7 . . . . . . . . . . . . . . . . . . . . .
3.3.1 Pilot control of the solenoid coils (pilot air supply) 3−7 . . . . . . . . . . . . .
3.3.2 Valve terminal MPA−L with pressure zone separation 3−8 . . . . . . . . . . .
3.3.3 Setting
3.3.4 Vacuum/low pressure operation 3−11 . . . . . . . . . . . . . . . . . . . .
3.4 Connecting the pneumatic lines 3−13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1 Installation/replacement of the threadless cartridges 3−15
3.4.2 Laying the tubing 3−18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.3 Common pneumatic lines 3−20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Connecting the electric cables 3−21 . . . . . . . .
3.6 Address assignment of the valves 3−24 . . . . . . . . . . . . . . . .
3.6.1 Valve terminal MPA−L with multi−pin plug connection 3−28 . . . . . . . . . . .
3.6.2 Valve terminal MPA−L with CPX terminal 3−28 . . . . . . . . .
the pressure regulating valve 3−10 . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .
. . . . . . . . . .
. . . . . . .
. . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . .
. . . . . . . . . .
3−2
Festo P.BE−MPAL−EN en 1008N H
3. Installation
3.1 Compressed air preparation
Caution
Unfiltered or incorrectly lubricated compressed air will
reduce the service life of the valve terminal.
3.1.1 Operation with unlubricated compressed air
Caution
Too much residual oil content in the compressed air will
reduce the service life of the valve terminal.
If bio−oils are used (oils with synthetic ester or true ester
basis, e.g. rape or methylester), the residual oil content
must not exceed 0.1mg/m
When using mineral oils (e.g. HLP oils to DIN 5 1524,
parts1 to 3) or similar oils based on poly−alpha−
olefins (PAO), the maximum residual oil content of
3
5mg/m
This avoids operative malfunction of the valves.
must not be exceeded (see ISO8573−1 Class4).
3
(see ISO8573−1 class2).
Excessive residual oil is not permissible irrespective of the
compressor oil, as otherwise the basic lubrication will be
washed out with time.
3.1.2 Operation with lubricated compressed air
Operate system equipment with unlubricated compressed air,
if possible. This is better for the environment. Festo pneu
matic valves and actuators have been designed so that, if
used as intended, they will not require additional lubrication
and will still achieve a long service life.
Festo P.BE−MPAL−EN en 1008NH
3−3
3. Installation
Caution
Operation with lubricated compressed air will cause the
life−time lubrication, which is necessary for unlubricated
operation, to be washed out".
Note the following instructions if lubricated compressed air
must be used:
The compressed air prepared with the compressor must
correspond in quality to unlubricated compressed air. If
possible, do not operate all of
your equipment with lubricated
compressed air. If possible, always install the lubricators
directly upstream of the consuming actuators.
Caution
Unsuitable additional oil and an excessive oil content in
the compressed air reduce the service life of the valve ter
minal.
Use Festo special oil OFSW−32 or the alternatives listed
in the Festo catalogue (as specified in DIN51524−HLP32;
basic oil viscosity 32CST at40 °C).
The additional lubrication must not exceed 25 mg/m
3
(ISO8573−1 class 5).
Make sure that the lubricator setting is correct
(see following section)
This avoids operative malfunction of the valves.
Setting the lubricator: With the machine running (typical operating status) 0.2 to
max. 1 drops/min. or 0.5 to 5 drops/1000l of air .
Checking the setting: The procedure described below can be used for checking
setting of the lubricator.
Proceed as follows, in order to check the service units with
respect to condensate and lubricator settings two times per
week.
3−4
Festo P.BE−MPAL−EN en 1008N H
the
3. Installation
1. Ascertain the actuator which is furthest from the lubricato r.
2. Ascertain the valve terminal which controls this cylinder.
3. Remove the silencer, if fitted, from port (3/5).
4. Hold a piece of white cardboard 10cm in front of the
exhaust port.
5. Let the system run for a short period.
There must be only a slight yellow
colouring on the card
board.
If oil droplets appear, this is an indication that too much oil
has been used. Another indicator is the coloration or the
condition of the exhaust air silencer. Distinctly yellow colour
ing of the filter element or drops of oil on the silencer indicate
that the lubricator setting is
too high.
Festo P.BE−MPAL−EN en 1008NH
3−5
3. Installation
3.2 General instructions on installation
Warning
Uncontrolled movements of the connected actuators and
loose tubing can cause injury to persons and/or damage
to property.
Before carrying out mounting, installation and mainten
ance work, switch off the following:
Compressed air supply
The operating and load voltage supplies.
Pay attention to the following:
The components of the valve terminal contain electrostatically
sensitive components.
if you touch the contact surfaces of the plug connectors or
if you do not observe the handling specifications for electro−
statically sensitive devices.
The components will be damaged
Note
Handle all modules and components of the valve terminal
MPA−L with great care.
Note especially the following:
Screws must be fitted accurately (in particular to avoid
damage to threads on plastic housing parts) and
screwed in by hand
The specified torques must be observed
Clean connecting services (avoidance of leaking and
contact faults) and intact seals and sealing surfaces
Close unused connections with blanking plugs to avoid
contamination and maintain reliability.
back pressure When exhausting large volume actuators or if the exhaust
performance is too small, back pressures can build up in the
valve terminal exhaust ducts. The back pressures can lead to
pneumatic actuation of other valves, especially
with un
switched 3/2−way valves that are normally closed.
3−6
Festo P.BE−MPAL−EN en 1008N H
3. Installation
To avoid back pressures:
· Optimise the ventilation and exhaust performance of
the valve terminal e.g. by using lar ger pipe diameters or
additional compressed air supply via pneumatic supply
plates with exhaust via silencers and exhaust plate.
· Separate exhaust ducts by using pressure zones if
necessary (see Chapter 1.5.3).
3.3 Connecting the valve terminal MPA−L
Connections on the following components are available for
supplying the valve terminal:
To the pneumatic supply plate, type VMPAL−SP
To the right−hand end plate, type VMPAL−EPR−SP
3.3.1 Pilot control of the solenoid coils (pilot air supply)
Internal pilot air supply If the operating pressure lies between 3 ... 8 bar , you can
operate the pilot control of the solenoid coils with an inter
nally branched pilot air supply.
Note
· Internal pilot air supply is branched centrally from sup
ply connection(1) for all solenoid coils. When operating
the valve terminal with several pressure zones the inter
nal pilot air supply is taken from the pressure zone,
which is directly adjacent to the right−hand end plate
(see Fig.3/1 and Fig.3/2).
Festo P.BE−MPAL−EN en 1008NH
3−7
3. Installation
External pilot air supply If the operating pressure lies below 3bar or abo ve 8 bar,
pilot control of the solenoid coils must be operated with
an external pilot air supply.
Note
· Use preferably closed−loop regulated external pilot air.
Reliable faultless operation of the valve terminal is then
possible, e.g. even with fluctuating operating pressure.
· The external pilot air supply is supplied centrally for all
solenoid coils via pilot connections(12/14) on the right−
hand end plate. This also applies when the valve ter
minal is operated with two pressure zones.
· For external pilot air supply the pilot air pressure must
be adapted to the operating pressure, but only within
the values of 3 ... 8bar.
The conversion between the internal and external pilot air
supply is described in Chapter 5.3.6.
3.3.2 Valve terminal M PA−L with pressure zone separation
The pressure zones are separated from each other by special
sub−bases (see Chapter 1.5.5). Each pressure zone must be
supplied by pneumatic supply plate and via a right−hand end
plate with side connections with compressed air. The position
of the supply plate within the pressure zone (left, centre or
right) is arbitrary.
By fitting a second
can provide additional supply air and exhaust air to optimise
the ventilation and exhaust performance of the valve ter
minal.
For each additional pressure zone a special sub−base is re
quired for separation and a special pneumatic supply plate is
required for supply (see Fig.3/1 and
3−8
supply plate within a pressure zone you
Fig.3/2).
Festo P.BE−MPAL−EN en 1008N H
3. Installation
The following diagrams show as an example the assignment
of the supply and exhaust ports to the valves on a valve ter
minal with three and four pressure zones and blocked chan
nels (1), (3) and (5) and with blocked channel (1).
1
Zone 1
6
5
1 Pressure zone1
2 Pressure zone2
3 Pressure zone3
4 Right−hand end plate (here: Version
without side connections)
23
Zone 2
Zone 3
5 Supply plate (here: for pressure
zone1)
6 Identification of the special sub−base
with integrated pressure zone
separation (here: for the separation of
channels (1) and (3/5) between
pressure zone 1 and pressure zone 2)
4
Fig.3/1: Example: Valve terminal MPA−L with three pressure zones
Festo P.BE−MPAL−EN en 1008NH
3−9
3. Installation
5
1
Zone 1
7
6
1 Pressure zone1
2 Pressure zone2
3 Pressure zone3
4 Pressure zone4
5 Right−hand end plate with supply
connection (1) and exhaust ports (3)
and (5) for pressure zone 4
2
Zone 2
34
Zone 3
Zone 4
6 Supply plate (here: for pressure
zone1)
7 Identification of the special sub−base
with integrated pressure zone
separation (here: for the separation of
channel (1) between pressure zone 1
and pressure zone 2)
Fig.3/2: Example: Valve terminal MPA−L with four possible pressure zones
3.3.3 Setting the pressure regulating valve
Using the adjusting screw on the pressure regulator plate (see
Fig.3/3) you can change the flow (see also Flow diagrams of
the pressure regulator valve plates" in Appendix A).
3−10
Festo P.BE−MPAL−EN en 1008N H
3. Installation
Proceed as follows:
· Turn the adjusting screw clockwise to increase the flow.
· Turn the adjusting screw anti−clockwise to decrease the
flow.
1 Adjusting screw
2 Pressure gauge
connection
Fig.3/3: Setting the pressure regulator plate
3.3.4 Vacuum/low pressure operation
Note
The 2x2/2−way valves with Ident. code D, I and the 2x3/2−way
valves with Ident. code N, K, H are not suitable for vacuum or
low pressure operation.
· For the abovementioned valves use a separate pressure
zone for mixed operation with other valves in vacuum oper
ation on the same valve terminal.
· The operating pressure for this pressure zone must be
set in accordance with the diagram in Fig.A/1.
If valves are used for switching a vacuum, then filters must
be used in the suction line to avoid operative malfunctions
caused by foreign matter sucked into the line.
1
2
Festo P.BE−MPAL−EN en 1008NH
3−11
3. Installation
Valve sub−bases
The following conditions must be fulfilled in order that you
can operate the valve terminal at supply connection (1) with
vacuum or low pressure between −0.9 ... 3 bar:
The pilot control of the solenoid coils is operated with a
regulated external pilot air supply.
The valve terminal is fitted with the following valve sub−
(see Tab.3/1) and sometimes has additional pres
bases
sure zones.
Pressure zone with vacuum or
low pressure supply via supply
connection (1)
Pressure zone with excess
pressure supply
port (1)
1) The valve plates with Ident. code D, H, K, N and I are not vacuum or low−pressure operation!
2) In accordance with diagrams in Appendix A, Fig.A/3
3) In accordance with diagrams in Appendix A, Fig.A/1
1)
3)
via supply
The pressure zone must be fitted only with the following valve
sub−bases:
5/2−way valve, monostable (Ident. code M)
5/2−way double pilot valve (Ident. code J)
5/3−way valves (Ident. codes B, E and G)
3/2−way valve (Ident. code W and X) see
note.
2 x 3/2−way valves (Ident. code HS, KS and NS)
2x 2/2−way valve (Ident. code DS)
The pressure zone can be fitted additionally with the following
valve sub−bases:
2x3/2−way valves (ident. code H, K and N)
2 x 2/2−way valves (Ident. code D, I), see also following instruc
tions
2)
and the following
Tab.3/1: Valve sub−bases, suitable for vacuum and low pressure
The pressure ranges of individual valve types can be found
Tab.A/4 in the T echnical Specification..
3−12
Festo P.BE−MPAL−EN en 1008N H
3. Installation
Note
Valves with Ident. code I, 2 x 2/2−way valves:
With these valves, vacuum is supplied at connection (5).
Solenoid coil 14 switches the vacuum to connection (4)
The operating pressure at supply connection (1) can be
used as an ejector pulse at connection(2). The operating
pressure is switched to connection2 with solenoid coil
If the valve terminal is also equipped with other valves,
then operate these vacuum and low pressure valves in a
separate pressure zone with a separate exhaust duct (5).
Valves with Ident. codes W and X, 3/2−way valves:
These valves can be supplied individual l y and therefore
operated in the pressure range of
−0.9 ... 10bar . They are
independent of supply connection (1) of the valve terminal.
The connections via which these valves are supplied with
compressed air or vacuum and via which exhaust air is
removed are shown in Tab. 3/ 2 .
The pilot air is supplied via the valve terminal.
12.
3/2−way valve
Ident. code X (4) (3)
Ident. code W (2) (5)
Tab.3/2: Connections to the valves with Ident. code X and W
3.4 Connecting the pneumatic lines
As pneumatic connection elements, terminal screws and
threadless cartridges with safety slot and and clamp strap
are used in the MPA−L valve (seeFig.3/4 and Tab.3/3).
Festo P.BE−MPAL−EN en 1008NH
Compressed air
or vacuum via
connection
Exhaust via port
3−13
3. Installation
(3/5)
Clamps straps are used for the positive−locking connection of
cartridges and can be mounted both form above and from
below on sub−bases (seeFig.3/5). For pneumatic supply
plates a clamp strap is fitted from above and for the exhaust
plate from below.
If elbow connectors or multiple distributors are used, the air
flow will be
reduced slightly.
(1)
(2)
(4)
(12/14)
(82/84)
(3)
(1)
(5)
Fig.3/4: Pneumatic connections of the valve terminal MPA−L (here: End plate for fitting
in exhaust ports)
3−14
Festo P.BE−MPAL−EN en 1008N H
3. Installation
Line Connection code
(ISO 5599)
Compressed air or
vacuum,
Exhaust air (3), (5)
External pilot air
supply
ducted pilot
exhaust air
Air or vacuum (2) or (4) QSPKG10 Cartridge in the sub−base
1) Depending on what you have ordered, the valve terminal may already be fitted with cartridges/
screw connectors.
(1)
(12/14)
(82/84)
Port size
(ISO 228)
QSPKG20 Cartridge in the pneumatic supply
G¼" Fitting in the right−hand end plate
M7 Fitting in the right−hand end plate
1)
Port
plate and in the exhaust plate
Tab.3/3: Assignment of the connections
3.4.1 Installation/replacement of the threadless cartridges
Installation Proceed as follows:
1. For selecting the correct cartridge use: Tab.3/3
2. Press in and turn the cartridge to the stop in the port.
Festo P.BE−MPAL−EN en 1008NH
3. Keep the cartridges in the pressed in state and inser t a
suitable clamp strap in the slot (see Fig.3/5). Obser ve the
guide steps on both sides.
The clamp strap must slot into
the end position.
3−15
3. Installation
Caution
Danger of injury by automatic loosening of parts under
pressure.
On pneumatic actuation cartridges can loosen and be
ejected at high speed, if the clamp strap is not inserted
securely in the safety slot.
After installation check each cartridge for secure seating.
3−16
Festo P.BE−MPAL−EN en 1008N H
3. Installation
Fig.3/5: Assembly of clamp straps for positive locking of the cartridges
Festo P.BE−MPAL−EN en 1008NH
3−17
3. Installation
Replacement Proceed as follows:
1. Check that the installed clamp straps can be seen from
the underside of the valve terminal.
If not: First loosen the screws of the valve that is mounted
over the sub−base concerned and remove the valve so
that the clamp strap can be removed from above.
2. For pneumatic supply plates:
the screws on the upper part (exhaust plate and
Loosen
cover plate of the silencer) and remove it.
3. Using a narrow slotted screwdriver lever the clamp strap
over the lugs and remove it.
4. Pull the cartridge out and replace it with a suitable type
(see Tab.3/3).
3.4.2 Laying the tubing
Note
· Seal unused connections with a blanking plugs to
ensure the reliability of the valve terminal.
Mounting Proceed as follows:
1. Press the hose into the hose connector as far as the stop
(see Fig.3/6).
2. Check the secure attachment of the hose to the cartridge.
3. For reasons of clarity, bundle the tubing together with:
Tube straps or
Multiple tubing holders
1 Cartridge fitting
1
2 Locking ring
Fig.3/6: Fitting the tubing
3−18
2
Festo P.BE−MPAL−EN en 1008N H
3. Installation
Dismantling Proceed as follows:
Warning
If the pneumatic tubing is under pressure when
dismantled, it may move suddenly and unexpectedly,
causing injury to persons. Carry out the following steps
before disconnecting the pneumatic tubing on the valve
terminal MPA−L:
· Switch off the compressed air supply.
· Make sure that all pneumatic tubing is unpressurized.
· Exhaust all actuators controlled by valves which are
closed in normal or mid−positions.
Note
To disconnect the hoses from the cartridges, use releasing
tool type QSO from Festo, or a screwdriver.
When using a screwdriver:
· Press down the locking ring only with the broad side of
the blade.
1. Identify all pneumatic hoses to avoid confusion when
reconnecting.
2. Press down the locking ring of the cartridge e.g. with a
screwdriver or Festo QSO releasing tool (see Fig.3/7).
3. Remove the tubing from the cartridge.
1 Cartridge fitting
1
2 Locking ring
Fig.3/7: Disconnecting the tubing
Festo P.BE−MPAL−EN en 1008NH
2
3−19
3. Installation
3.4.3 Common pneumatic lines
Note
In the case of several systems with centrally ducted ex
haust:
· Use non−return valves in the common exhaust lines (3/5)
or (82/84) in order to prevent functional impairment due
to back pressures.
1 First valve
terminal MPA−L
1
2 Common exhaust
lines (3/5)
3 Central pilot air
exhaust
tubing(82/84)
4 Central exhaust
line (3/5)
5 Second valve
terminal MPA−L
6 Common exhaust
lines (82/84)
Fig.3/8: Common lines with non−return valves
34 5
2
6
2
6
2
3−20
Festo P.BE−MPAL−EN en 1008N H
3. Installation
3.5 Connecting the electric cables
Warning
· Use only PELV circuits as per IEC/EN 60204−1 for the
electric power supply (protective extra−low voltage,
PELV).
Also observe the general requirements for PELV circuits
in accordance with IEC/EN 60204−1.
· Use only power sources that guarantee reliable
electrical isolation of the operating voltage as per
IEC/EN 60204−1.
Protection against electric shock (protection against direct
and indirect contact) is guaranteed in accordance with
IEC/EN 60204−1 by using PELV circuits (electrical equipment
of machines, general requirements).
Festo P.BE−MPAL−EN en 1008NH
Note
Ascertain which measures, in line with your EMERGENCY
STOP procedures, are necessary for putting your machine/
system into a safe state in the event of an EMERGENCY
STOP(e.g. switching off the operating voltage for the
valves and output modules, switching off the compressed
air).
Valve terminal MPA−L with multi−pin plug connection:
Information on the
electrical connection of the valve terminal
with one of the multi−pin plug connections can be found in the
in User’s manual, enclosed with the product.
Valve terminal MPA−L with CPX terminal:
Instructions on connecting the operating voltage can be
found in the CPX system manual.
Detailed instructions on connecting the CPX modules (bus
node,
I/O modules etc.) can be found in the relevant descrip
tions for the CPX module (see CPX system description, table
Descriptions of the CPX terminal").
3−21
3. Installation
Load voltage supply The load voltage supply of the valves for the valve terminal
MPA−L is exclusively via the multi−pin plug connection and via
the CPX terminal.
Earthing the valve terminal MPA−L
Note
Earth your valve terminal MPA−L!
· For multi−pin plug connection:
Connect one of the earth connections (see Tab.2/1) with
low impedance to the earth potential, by choosing the
shortest possible line with the largest cross section.
· For CPX terminal:
Connect both earth connections (see Tab.2/1) with low
impedance to the earth potential, by choosing the
shortest possible line with the largest cross section.
Observe in addition the supplementary information in
the CPX system description.
This serves to avoid interference due to electromagnetic
influences and and ensures electromagnetic compatibility
in accordance with
EMC directives.
3−22
Festo P.BE−MPAL−EN en 1008N H
3. Installation
Valve terminal variant Earth terminals
MPA−L with multi−pin plug connection
1
MPA−L with CPX terminal
1
Tab.3/4: Earth connections of the valve terminal MPA−L
to the left−hand end plate 1
or
2
to the right−hand end plate 2
to the left−hand end plate 1
2
and
to the right−hand end plate 2
Festo P.BE−MPAL−EN en 1008NH
3−23
3. Installation
3.6 Address assignment of the valves
Addresses are allocated in ascending order without gaps,
from left to right (see the following example). A valve position
consisting of a sub−base with electronics module, occupies
according to the integrated electronic module the following
number of addresses (see Tab.3/5):
Electronics module Number of
Type Housing colour
Individual electronic module
VMPA1−EVAP−10−1 grey one address
VMPA1−EVAP−10−2 black two addresses
4 off electronic module
VMPA1−EVAP−10−1−4 grey one address (4x)
addresses per
valve position:
3−24
VMPA1−EVAP−10−2−4 black two addresses (4x)
Electronic module of the pneumatic supply plate
VMPA1−EVAP−20−SP black none, looped
through
Tab.3/5: Available electronic module address assignment
Note
Address assignment does not depend on whether blanking
plates or valve plates are fitted.
If a valve position occupies 2 addresses, the following
applies:
Pilot solenoid 14 occupies the less significant ad
dress.
Pilot solenoid coil 12 occupies the more significant
address
Festo P.BE−MPAL−EN en 1008N H
3. Installation
For controlling the valves, each solenoid coil is assigned to a
certain pin of the multi−pin plug socket (see Tab.3/6).
Note
Use a uniform method of control within a multi−pin plug:
Preferably, all control signals should be positive switching
(0 −> 1/off −> on), otherwise all control signals negative−
switching (1 −> 0/on −> off).
Mixed mode control is not permitted!
Pin Address Val ve
position
Solenoid
coil
Electronics module
number
1
0
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
9
10
11
12
13
14
15
1)
10
11
12
13
14
15
16
17 16 8 14 VMPA1−EVAP−10−1
0 14
1 14
2 14
3 14
4 14 VMPA1−EVAP−10−2−4
5 14
6 14
1)
7
1)
12
12
12
12
12
12
VMPA1−EVAP−10−2−4
(black, for 4 MPA1 valves
each with two solenoid
coils)
(black, for 4 MPA1 valves
each with two solenoid
coils)
(grey, for an MPA1 valve
with a solenoid coil)
Festo P.BE−MPAL−EN en 1008NH
3−25
3. Installation
Pin Electronics moduleSolenoid
Address
Val ve
position
coil
number
181917
18
... ... ... ... ...
25 0V/24V
1) Address is for a solenoid coil reserved by the electronic module,
not used in the current example.
2) Mixed operation is not permitted.
9 14
2)
12
VMPA1−EVAP−10−2
(black, for an MPA1 valve
with two solenoid coils)
Tab.3/6: Example: Address assignment of an valve terminal
MPA−L with 25 pin multi−pin plug connection and
10valve positions
Note
Addresses may be shifted if the valve terminal is extended.
3−26
Festo P.BE−MPAL−EN en 1008N H
3. Installation
1
234
8
1 Addresses of the solenoid coils 14
(manual override 14)
2 Addresses of the solenoid coils 12
(manual override 12)
3 LED for solenoid coil 12
5
8
6
79
6 Sub−base with VMPA1−EVAP−10−2
electronic module assigned two
addresses per valve position
7 Sub−base with VMPA1−EVAP−10−1
electronic module assigned one
address per valve position
4 LED for solenoid coil 14
5 Unused/reserved valve position
8 Four sub−bases with four
VMPA1−EVAP−10−2−4 electronic
modules assigned two addresses per
valve position
9 Supply plate with MPA1−EVAP−20−SP
electronic module (no address
assigned)
Fig.3/9: Example: Address assignment for valve terminal MPA−L with multi−pin plug
connection (view)
Festo P.BE−MPAL−EN en 1008NH
3−27
3. Installation
1
3.6.1 Valve terminal M PA−L with multi−pin plug connection
For an valve terminal MPA−L with a multi−pin plug connection
the maximum number of controllable solenoid coils is related
to the plug type used (see Chapter.1.3).
3.6.2 Valve terminal M PA−L with CPX terminal
Pneumatic interface The pneumatic interface of the valve terminal MPA−L creates
the mechanical and electrical connection between the CPX
terminal and MPA pneumatic modules.
Display and connecting elements
The pneumatic interface has the following display and con
necting elements (Fig.3/10):
1 Connecting plug
to the MPA
pneumatic
modules
5
4
2 Rotary switch
under a cover cap
(torque: 0.5Nm
±10%)
3 Inscription field
4 Fault LED (red)
5 Connecting plug
to the CPX
interlinking
blocks
Fig.3/10: Display and connecting elements on the pneumatic interface
3−28
Festo P.BE−MPAL−EN en 1008N H
2
3
3. Installation
Error LED Error messages are displayed on the one hand via the red LED
on the pneumatic interface and on the other hand transferred
from the pneumatic interface to the CPX bus nodes. These
error messages to and from the pneumatic interface can be
inclusively suppressed by parameterisation on the CPX ter
minal (module
code: 70d).
Fault LED
Procedure Status Error
(red)
ON
OFF
off
ON
OFF
LED lights up
Faultless operation. None
Fault in load voltage for valves
Load voltage for the valves (V
missing or too low.
VAL
)
Tab.3/7: Statuses of the error LED of the pneumatic interfaces
Configuration of the address space
From the point of view of the CPX terminal the pneumatic
interface is seen as an electrical module with a variable
(configurable via the rotary switch) number of digital outputs
for the control of the attached valves
For a valve terminal MPA−L with CPX terminal a maximum of
32solenoid coils are controllable, independently
tion of the rotary switch (see Tab.3/8).
Note
On conversion or expansion of the valve terminal MPA−L
the number of output addresses assigned by the pneu
matic system via the rotary switch on the pneumatic inter
face must be checked and adapted if necessary.
This is not necessary if previously a sufficiently large ad
dress space for the expansion has been
Error handling
number
5 Apply and
increase voltage
of the posi
reserved.
Festo P.BE−MPAL−EN en 1008NH
3−29
3. Installation
Rotary switch Switch position Maximum
number of
controllable
Solenoid coils
0 4
1 8
2; 3 16
4; 5; 6; 7 24
8
(condition upon de
livery)
9 32
32
Tab.3/8: Configuration of address space size
Adjustment rules for the size of the address space
If the number of solenoid coils fitted is less than the
number of output addresses set with the rotary switch,
the superfluous addresses will be reserved for later ex
tensions (if the maximum number of valves is fitted, out
put addresses will then remain unused).
Modifications to the configuration will not become effec
tive
until the operating voltage is switched on again.
Further instructions on addressing the pneumatic modules of
the valve terminal MPA−L with CPX terminal can be found in
the electronics manual for the module (see CPX system de
scription, table Manuals on the CPX terminal").
3−30
Festo P.BE−MPAL−EN en 1008N H
Commissioning
Chapter 4
4−1Festo P.BE−MPAL−EN en 1008NH
4. Commissioning
Contents
4. Commissioning 4−1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 General Information 4−3
4.1.1 Prior to commissioning 4−3 . .
4.1.2 Pressure build−up in the overall supply 4−3 . . . . . . . . . . . .
4.2 Checking the valves and the valve/actuator combination 4−6 . . . . . . . . . . . . . . .
4.3 Mounting/removing the optional manual override cover cap 4−11 . . . . . . . . . . .
4.4 Troubleshooting 4−13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.1 Switching
4.4.2 Impairment of functions 4−13 . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.3 Operating states of the pneumatic system 4−15 . . . . . . . . . . . . . . . . . . .
status indicator of the solenoid coils 4−13 . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .
.
. . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4−2
Festo P.BE−MPAL−EN en 1008N H
4. Commissioning
4.1 General Information
4.1.1 Prior to commissioning
· Switch off the power supply before connecting or discon
necting plug connectors (otherwise functional damage).
· Only commission a valve terminal that has been mounted
and wired completely.
· Make sure that there is a sufficient supply of fresh air
(cooling) for the following operating conditions:
When the maximum number of valves are fitted
When the maximum operating voltage is applied
When the solenoid coils are constantly under stress
· Note the specifications concerning the medium.
4.1.2 Pressure build−up in the overall supply
Warning
If the pressure build−up of the pilot air supply is too slow
or delayed, this may cause the actuators to perform
sudden unexpected movements under the following condi
tions:
When the compressed air is connected via a soft−start
valve (gradual pressure build−up) and
If there are electric signals (e.g. after EMERGENCY STOP)
This can
injury to persons.
· Operate the valve terminal with an external pilot air
Festo P.BE−MPAL−EN en 1008NH
cause damage to the machine or system and even
supply (3 ... 8 bar). Branch the pilot air supply before
the soft−start valve (see Fig.4/1).
4−3
4. Commissioning
The pilot air supply must reach a pressure of 3 ... 8 bar.
Otherwise it is not ensured that the valve will switch directly
(see Fig.4/1).
If the pressure is less than 3 bar, there may be a delay before
the valve is switched, in spite of an electric signal being pres
The gradual pressure build−up of the overall supply does
ent.
not affect the actuator in that case. The actuator would react
suddenly (e.g. a cylinder would extend or retract suddenly ,
depending on the valve function).
82/84
42
14 12
12/14
1
53
2
4−4
3
1
12/14
1
1 Externally supplied pilot air supply (3 to 8 bar),
branched before the soft−start valve
2 Soft−start valve (slow build up in pressure of complete
supply)
Fig.4/1: Example of valve−cylinder combination with slow
pressure build−up of the complete system
Festo P.BE−MPAL−EN en 1008N H
2
4. Commissioning
The table below shows the effects of gradual start−up
pressurisation when there are electric signals present:
External pilot
air supply
Branched down
stream of the soft−
start valve
Branched up
stream of the soft−
start valve
Pressure rise
in overall
supply
slowly slowly after pressure
slowly fast before pressure
Pressure rise in
the pilot air
supply (12/14)
Tab.4/1: Effects of slow start−up pressurisation
Time when a
valve reverses
rise at (1)
rise at (1)
Movement of
the actuator
fast
slowly
Festo P.BE−MPAL−EN en 1008NH
4−5
4. Commissioning
4.2 Checking the valves and the valve/actuator combination
The valve terminal MPA−L should be commissioned as follows:
Commissioning variants
Preliminary test of the pneuma
tic tubing connection
Complete commissioning of the
overall system
Activity
Test the valve−actuator combina
tion by means of the manual
override
Installing and connecting the
overall system.
Program control via PLC/indu
strial PC.
Tab.4/2: Commissioning variants
Commissioning the pneumatic components by means of the
manual override is described below.
Commissioning of the CPX terminal is described in the
appropriate description for the CPX bus node (see CPX
system description, table Descriptions of the CPX terminal").
4−6
Festo P.BE−MPAL−EN en 1008N H
4. Commissioning
Warning
Before actuating the manual overrides:
Uncontrolled actuation of solenoid coils can cause the
actuators to perform sudden unexpected movements
which may cause personal injury and material damage.
· Disconnect the power supply for the solenoid coils at
the relevant connections on the valve terminal MPA−L.
This prevents accidental actuation of the solenoid coils.
Before switching on the power supply:
During commissioning, manual overrides that are in the
switched state can cause actuators to perform sudden
unexpected movements. These movements can cause
injury to persons and damage to property.
· Make sure that all manual overrides are reset to their
initial position.
You will thereby avoid undefined switching states of the
valves.
Festo P.BE−MPAL−EN en 1008NH
Warning
Before testing the valve/actuator combination:
Make sure that nobody is in the danger zone.
Note
A valve that has been switched by an electric signal cannot
be reset by the manual override. The electric signal is
dominant in this case.
· Reset the electric signal before actuating the manual
override.
Proceed as follows:
1. Switch on the compressed air supply.
4−7
4. Commissioning
2. Check the functioning and operation of each individual
valve/actuator combination by actuating the manual over
ride as shown in the following diagrams.
Note
Incorrect actuation of the non−detenting manual override
can lead to malfunctioning or damage to the manual over
ride.
· Use a screwdriver (blade width max.3mm) to actuate
the manual override.
· Operate the manual override to max. 25 N.
3. With a detenting manual override: After testing the valves,
make sure that all manual overrides are in their initial
positions again.
Caution
Valves with manual overrides in switch position can move
actuators unintentionally during commissioning. This can
cause injury to people and damage to property.
· Prior to commissioning, reset all manual overrides to
their initial positions again.
If the manual override is in the actuated state, it is not
possible to reset the valve to its neutral position with an
electric signal. The manual override is dominant in this
case.
4−8
4. Switch off the compressed air supply after testing the
valves.
Festo P.BE−MPAL−EN en 1008N H
4. Commissioning
Non−detenting operation of manual override (return: automatic)
Operation Valve response
· Use a screwdriver (max. blade
width 3 mm) to press down the
plunger of the manual override
until the valve switches.
Note:
In the case of manual overrides
without a cover cap, do not turn the
pressed−down plunger as otherwise
the manual override will lock.
· Press and hold in the stem of
the manual override.
· Put down the screwdriver. The spring force presses the stem
The pilot valve switches and sets
the power valve to the switch posi
tion.
The valve remains switched.
of the manual override back to the
neutral position.
Pilot valve returns to the neutral posi
tion and so too does the monostable
power valve (not for bistable valves,
codeJ).
Tab.4/3: Non−locking operation of the manual override
Festo P.BE−MPAL−EN en 1008NH
4−9
4. Commissioning
Note
The detenting operation of the manual override is only
possible if a manual override cover cap is not fitted.
Detenting operation of the manual override (return: manual)
Operation Valve response
· Use a screwdriver (max. blade
width 3mm) to press down the
plunger of the manual override
until the valve switches.
· Then turn the plunger a quarter
turn in a clockwise direction.
· Put down the screwdriver. The valve maintains its switching
· Using the screwdriver rotate
the stem anti−clockwise a quarter
turn backwards.
· Put down the screwdriver.
The pilot valve switches and sets
the power valve to the switch posi
tion.
position.
The spring force presses the stem of
the manual override back to the neu
tral position.
Pilot valve returns to the neutral posi
tion and so too does the monostable
power valve (not for bistable valves
codeJ).
Tab.4/4: Detenting operation of the manual override
4−10
Festo P.BE−MPAL−EN en 1008N H
4. Commissioning
4.3 Mounting/removing the optional manual override cover cap
Mounting Proceed as follows:
1. Make sure that the relevant manual overrides are in a
non−actuated state. If necessary set a detenting manual
override back to the initial position (see Tab.4/4).
2. Place the cover cap on the manual override so that the
snap hooks of the cover can grip into the recess on the
manual override.
3. Clip the manual override cover caps into the recesses in
the manual overrides (see Fig.4/2).
1 Manual override
cover caps
1
2 Manual override
(MO)
Fig.4/2: Mounting the MO cover caps
Festo P.BE−MPAL−EN en 1008NH
2
4−11
4. Commissioning
Note
The manual override cover caps serve for limiting the
function of the manual override and are constructed
so that they can only be removed with a great deal of
strength. During dismantling the snap hooks of the
manual override cover cap will be damaged.
Dismantling Proceed as follows:
· Use a suitable screwdriver to lift the manual override
cover caps out of the manual overrides (see Fig.4/3).
4−12
Fig.4/3: Dismounting the manual override cover caps
Further information can be found in the assembly instructions
enclosed with the cover caps.
Festo P.BE−MPAL−EN en 1008N H
4. Commissioning
4.4 Troubleshooting
4.4.1 Switching status indicator of the solenoid coils
The LEDs on the valves show the switching statuses of the
solenoid coils.
LED (yellow)
Switching position
of the valve
Neutral position Logical 0 (signal not applied)
off
Switching position (normal
case)
LED lights up
Neutral position (error) logical 1 (signal is present, valve has not
Tab.4/5: Meaning of the LED display
4.4.2 Impairment of functions
After switching on the compressed air supply or when subse
quently testing the individual valves, you can learn the following
about the operating status of the pneumatic system:
Meaning
Logical 1 (signal is present, valve has switched)
switched):
Load voltage of the valves lies below the
permitted tolerance range
Compressed air supply not OK
or
Pilot exhaust air blocked
or
Servicing required
Festo P.BE−MPAL−EN en 1008NH
4−13
4. Commissioning
Operating status of
the pneumatic system
Error handling when the compressed air supply has been
switched off
Air escapes from ...
Common line or working
· Check assembly of the tubing
line connections
Valve or pneumatic system...
Does not react as expected
Not
· Check the installation of the tubing lines
· Check the electric cables
· Bring the detenting manual override into the basic position
· After switching on again check the operating pressure (if necessary
for each pressure zone). Set operating pressure in accorda n ce with
instructions in chapter 3.
· Servicing required
For valve terminals which must be operated with closed−loop regulated
external pilot air:
· After switching on again, check the pilot pressure (if necessary ,
set as a factor of the operating pressure, see chapter 3)
Tab.4/6: Function impairment of the pneumatic system
4−14
Festo P.BE−MPAL−EN en 1008N H
4. Commissioning
4.4.3 Operating states of the pneumatic system
The following conditions should be fulfilled, in order that
the desired pneumatic operating states listed below can be
achieved:
Desired pneumatic
Requirement Description
operating status
Zero leakage Tubing connected with care
Fast reaction Sufficient pressure supply by means
Trouble−free Non−return valves in common ex
Two or more pressure
zones
Vacuum or low−pres
sure operation
EMERGENCY STOP of
pressure zones
Slow start−up after
EMERGENCY STOP
Regulated pilot air supply
of pressure supply modules
haust line
Limiting the pressure zones by
means of separating seals with
blocked channels
Appropriate number of pneu
matic air supply plates for
supplying the different pressure
zones.
Externally supplied regulated pilot
air supply (3 ... 8 bar)
Guaranteeing the controller function
for the pilot air supply despite the
overall supply being switched off
If control signals are present, the pi
lot air supply must have a pressure
of 3 ... 8 bar immediately after being
switched on
Exhaust the valve terminal MPA−L
via all the exhaust plates or via the
flat plate silencer
This applies when several systems
with centrally ducted exhaust air are
used
Subsequent conversion possible
(see Chapter 5)
Vacuum/low−pressure operation not
with 3/2−way valves
The controller regulates the pilot air
supply to all the valve plates on a
valve terminal MPA−L
Tab.4/7: Pneumatic operating states
Festo P.BE−MPAL−EN en 1008NH
4−15
4. Commissioning
4−16
Festo P.BE−MPAL−EN en 1008N H
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