Siemens 6DR55, SIPART PS2 PA Series Manual

Page 1
Manual Edition 03/2006
Electropneumatic Positioner
6DR55xx
p
sipart
Page 2
Page 3
SIPART PS2 PA
6DR55xx
Edition 03/2006
Manual
Electropneumatic Positioner for Linear and Part--Turn Actuators
SIPART PS2 PA Manual A5E00127926- -05
1
Page 4
Copyright e Siemens AG 2006 All rights reserved
Disclaimer of Liability
The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utility model or design, are reserved.
Siemens AG Bereich Automation & Drives Geschäftsgebiet Process Instrumentation and Analytics D--76181 Karlsruhe
We have checked the contents of this manual for agreement with the hardware and software described. Since deviations cannot be precluded entirely, we cannot guarantee full agreement. However, the data in this manual are reviewed regularly and any necessary corrections included in subsequent editions. Suggestions for improvement are welcomed.
e Siemens AG 2006 Technical data subject to change without notice
Trademarks
SIMATICe,SIPARTe,SIRECe, SITRANSe are registered trademarks of the Siemens AG
Third parties using for their own purposes any other names in this document which refer to trademarks might infringe upon the rights of the trademark owners.
SIPART PS2 PA Manual
2
A5E00127926- -05
Page 5

Contents

0 Information for the operator 7.............................................
0.1 General information 7...........................................
0.2 Classification of safety--related notices 8..........................
0.3 Qualified personnel 9...........................................
0.4 Use as intended 11..............................................
0.5 Technical documentation 1 1......................................
0.6 Warranty information 12..........................................
0.7 Delivery notes 12................................................
0.8 Standards and regulations 12.....................................
1 Introduction 13............................................................
1.1 General information about the positioner 13.........................
1.2 General information regarding PROFIBUS 17.......................
1.2.1 Transmission method 17.........................................
1.2.2 Topology 17....................................................
1.2.3 Properties of the PROFIBUS PA 18................................
1.2.4 Profile 19.......................................................
1.2.5 Interfacing 19...................................................
2 Design and method of operation 23.........................................
2.1 Overview 23....................................................
2.2 Design Rating Plate 25...........................................
2.3 Instrument components 25.......................................
2.3.1 Motherboard 26.................................................
2.3.2 Electrical connections 26.........................................
2.3.3 Pneumatic connections 27........................................
2.3.4 Mounting kit 29.................................................
2.3.5 Purge air switching (not in the explosion--proof version) 29............
2.3.6 Restrictors 29...................................................
2.4 Method of operation 30..........................................
2.5 State as supplied 31.............................................
2.6 Option modules 31..............................................
2.6.1 Installation of options modules in normal and intrinsically
safe versions 31................................................
2.6.2 Installation of options modules in explosion proof version 34..........
SIPART PS2 PA Manual A5E00127926- -05
3
Page 6
2.6.3 Iy module 36....................................................
2.6.4 Alarm module 37................................................
2.6.5 SIA module 38..................................................
2.6.6 Mechanical limit switch module 39.................................
2.6.7 EMC filter module 43............................................
2.6.8 Accessories 43.................................................
3 Preparing for operation 45.................................................
3.1 Instrument identification (type key) 45..............................
3.2 Dimensional drawings 45.........................................
3.3 Assembly 47....................................................
3.3.1 Instructions for using positioners in a wet environment 48.............
3.3.2 Instructions for using positioners which are exposed to great
accelerations or vibrations 50.....................................
3.3.3 Mounting kit ”linear actuator” 6DR4004--8V and 6DR4004--8L 53......
3.3.4 Assembly procedure (see figure 26, page 55) 53....................
3.3.5 Mounting kit ”part--turn actuator” 6DR4004--8D 56...................
3.3.6 Assembly procedure (see figure 27 and figure 28) 57.................
3.4 Electrical connection 62..........................................
3.4.1 Connection variant: options in positioner in non--intrinsically safe
and explosion--proof version 67...................................
3.4.2 Connection variant: options in the positioner in intrinsically safe
version 69......................................................
3.4.3 Connection variant: options in the positioner in type of protection
”n” version 71...................................................
3.5 Pneumatic connection 73.........................................
3.6 Commissioning 74...............................................
3.6.1 Preparations for linear actuators 75................................
3.6.2 Automatic initialization of linear actuator 76.........................
3.6.3 Manual initialization of linear actuator 78............................
3.6.4 Preparations for part--turn actuator 81..............................
3.6.5 Automatic initialization of part--turn actuator 81......................
3.6.6 Manual initialization of part--turn actuators 83.......................
3.6.7 Automatic initialization (structograms) 85...........................
3.7 Copying initialization data (positioner exchange) 89..................
4 Operation 91..............................................................
4.1 Display 91......................................................
4.2 Input keys 91...................................................
4.3 Operating modes 94.............................................
4.4 Parameters 97..................................................
4
SIPART PS2 PA Manual
A5E00127926- -05
Page 7
4.5 Diagnosis 113...................................................
4.5.1 Diagnostic display 1 13............................................
4.5.2 Meaning of the diagnostic values 1 14...............................
4.5.3 Online--diagnosis 118.............................................
4.6 Meanings of other display texts 122.................................
4.7 Optimization of the control data 126.................................
4.8 Fault correction 127..............................................
5 Functions/operation via PROFIBUS PA 131...................................
5.1 System integration 131............................................
5.2 Acyclic data transmission 131......................................
5.2.1 SIMATIC PDM 131...............................................
5.2.1.1 Allocate address 132.............................................
5.2.1.2 Load to device 132...............................................
5.2.1.3 Load to PG/PC 132...............................................
5.2.1.4 Read maintenance information 132.................................
5.2.1.5 Set maintenance information 133...................................
5.2.1.6 Operation 134...................................................
5.2.1.7 Reset 137.......................................................
5.2.1.8 Initialization parameters 138.......................................
5.2.1.9 Self--calibration 138...............................................
5.2.1.10 Write protection 139..............................................
5.3 Cyclic data transmission 139.......................................
5.3.1 Configuration 139................................................
5.3.1.1 Configuring the user data 139......................................
5.3.2 User data via PROFIBUS 141......................................
5.3.2.1 Status 148......................................................
5.3.2.2 Diagnostics 149..................................................
5.3.3 Diagnostics acc. to PROFIBUS DP (DDLM_Slave_Diag) 150...........
5.3.4 Condensed Status 152............................................
6 Service and maintenance 159...............................................
7 Technical data 161..........................................................
8 Scope of delivery 167.......................................................
8.1 Ordering data 168................................................
8.2 Scope of delivery of options 169....................................
8.3 Scope of delivery of accessories 169................................
8.4 List of Spare Parts 170............................................
9 Index 171..................................................................
10 Appendix 173..............................................................
10.1 Literature and catalogs 173........................................
10.2 Certificates 174..................................................
SIPART PS2 PA Manual A5E00127926- -05
5
Page 8
SIPART PS2 PA Manual
6
A5E00127926- -05
Page 9
Information for the operator

Information for the operator

Dear customer ,
Please read this manual before starting work!
It contains important information and data which, when observed, ensure full availability of the equipment and save service costs. This simplifies handling of this control instrument considerably and provides accurate measuring results.
You have purchased an instrument which can be installed in various configurations:
S SIPART PS2 without Ex--protection in a metal or plastic housing.
S SIPART PS2 with EEx ia/ib--protection in a metal or plastic housing.
S SIPART PS2 EEx n in a metal or plastic housing
S SIPART PS2 EEx d in flameproof enclosure (EEx d)
This manual takes each of these possibilities into consideration. Any differences between the devices are indicated specially.
Scope of delivery, see chapter 8, page 167.
0

0.1 General information

The product described in this manual left the factory in a perfectly safe and tested condition. To maintain this condition and to achieve perfect and reliable operation of this product, it must only be used in the way described by the manufacturer. Successful and safe operation of this equipment is dependent on proper handling, installation, operation and maintenance.
SIPART PS2 PA Manual A5E00127926- -05
7
Page 10
Information for the operator
This manual contains the information required for use as intended of the product it describes. It is addressed to technically qualified personnel specially trained or having relevant knowledge of instrumentation and control technology, hereafter called automation technology.
Familiarity with and proper technical observance of the safety notes and warnings contained in this manual are essential for safe installation and commissioning and for safety in operation and maintenance of the product described. Only qualified personnel as defined in Chapter 0.3 has the necessary specialist knowledge to interpret the general safety notes and warnings given in this document in specific cases and to take the necessary action.
The documentation supplied with the instrument is listed in Chapter
0.5.
This manual is not a permanent part of the scope of supply. For reasons of clarity, it does not contain every detail about every version of the product described and cannot take every eventuality in installation, operation, maintenance and use in systems into account. If you require further information or if problems occur that have not been dealt with in sufficient detail in this document, please request the required information from your local Siemens office or the office responsible for you.
Functionality, commissioning and operation are described in this manual.
Please pay special attention to the Warning and Note texts. These are separated from the remaining text by horizontal lines and specially marked with symbols (see Chapter 0.2).
0.2 Classification of safety--related notices
This manual contains notices which you should observe to ensure your own personal safety, as well as to protect the product and connected equipment. These notices are highlighted in the manual by a warning triangle and are marked as follows according to the level of danger:
DANGER
!
!
indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
SIPART PS2 PA Manual
8
A5E00127926- -05
Page 11
Information for the operator
CAUTION
!
used with the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
CAUTION
used without safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.
NOTICE
used without the safety alert symbol indicates a potential situation which, if not avoided, may result in an undesireable result or state.
.
NOTE
highlights important information on the product, using the product, or part of the documentation that is of particular importance and that will be of benefit to the user.

0.3 Qualified personnel

The result of unqualified intervention in the instrument or nonobservance of the warnings given in this manual or on product labels can be severe personal injury and/or serious material damage. Therefore only properly qualified personnel must make changes and settings in the instrument.
For the purpose of the safety information in this manual and on the product labels, qualified personnel are those who
S in the case of ex--proof equipment, are trained, instructed or
authorized to perform work on electrical circuits of equipment subject to explosion hazard.
S if they are configuration personnel, are familiar with the safety
concepts of automation technology
SIPART PS2 PA Manual A5E00127926- -05
S if they are operating personnel, have been instructed in the handling
of automation equipment and know the content of this manual relating to operation
S if they are commissioning and/or service personnel, are trained to
repair such automation equipment and authorized to energize, de--energize, clear ground and tag circuits and equipment according to safety engineering standards.
S and instructed additionally in first aid
9
Page 12
Information for the operator
WARNING
!
The instrument must only be installed and commissioned by qualified personnel.
The instrument is designed for connection to functional and safety extra low voltage.
The instrument is designed for connection to operate voltage or safety extra--low voltage.
Electrical safety depends only on the power supply equipment.
Pneumatic actuators exert considerable positioning forces. The safety precautions of the actuator used must therefore be scrupulously observed during installation and commissioning in order to prevent injuries.
We explicitly draw your attention to the necessity of observing safety regulations regarding operation in zones subject to explosion hazard, if applicable.
The specifications of the examination certificate valid in your country must be observed. Laws and regulations valid in your country must be observed for the electrical installation in explosions hazardous areas. In Germany these are for example:
-- Working reliability regulations,
-- Regulations for installing electrical equipment in hazardous areas, DIN EN 60079--14 (in the past VDE 0165, T1).
It should be checked whether the available power supply , insofar as this is required, is compliant with the power supply specified on the rating plate and specified in the examination certificate valid in your country.
Take care to avoid electrostatic discharges within the hazardous area, such as can arise if a dry cloth is used to clean the positioner in the plastic housing.
Devices with the protection type ”flameproof enclosure” may only be opened when the power is off.
WARNING
!
Devices with the protection type ”intrinsically safe” lose their certification as soon as they are operated with circuits that do not conform to the specifications laid down in the EC type examination certificate valid in your country.
The successful and safe operation of this equipment is dependent upon its proper handling, installation, operation and maintenance.
10
WARNING
!
The device may not be operated as long as the quick start guides are inside the housing.
SIPART PS2 PA Manual
A5E00127926- -05
Page 13

0.4 Use as intended

Use as intended for the purpose of this manual means that this product must only be used for the applications described in the technical description (see also Chapter 3 page 45 of this manual).
The product described in this manual has been developed, manufactured, tested and documented observing the relevant safety standards. If the handling rules and safety information for configuration, installation, use as intended and maintenance are observed, there is normally no danger with regard to material damage or for the health of personnel. Extra low voltages that are connected must be fed in by safe isolation.

0.5 Technical documentation

The instructions are a constituent part of the enclosed CD ”sipartp ps2 POSITIONERS” (order number A5E00214567). The manual and fur­ther documentations are available on the Internet at:
Information for the operator
.siemens.com/sipartps2
www
Click on ”More Info” and ”--> Instructions and Manuals”.
On the enclosed CD, you will find an extract of the catalog FI 01 ”Field devices for process automation” with the current order data. The entire FI 01 catalog is also available at the above Web address.
If you need more information or have particular problems which are not covered sufficiently by the operating instructions, contact your local Siemens office. You will find your local Siemens office on the Internet under:
.siemens.com/processinstrumentation
www
Click on ”Contact” and select your closest town.
SIPART PS2 PA Manual A5E00127926- -05
11
Page 14
Information for the operator

0.6 Warranty information

We should like to point out that the content of this manual is not part of and does not modify a previous or current agreement, undertaking or legal relationship. Siemens is bound solely by the contract of sale, which also contains the complete and exclusive warranty . The contractual warranty conditions are neither extended nor restricted by this document.

0.7 Delivery notes

The scope of delivery is listed on the dispatch papers accompanying the delivery in accordance with the valid contract of sale.
When you open the packaging please observe the information on the packaging. Check that the delivery is complete and undamaged. If possible, compare the order number on the rating plates with the ordering data.
For the scope of delivery please see Chapter 8, page 167.

0.8 Standards and regulations

As far as possible, the harmonized European standards were used to specify and manufacture this equipment. If harmonized European standards have not been applied, the standards and regulations of the Federal Republic of Germany apply (see also Chapter 7 page 161 ”Technical Data”).
If this product is used outside the area of applicability of these standards and regulations, please observe the standards and regulations in force in the country where the product is operated.
12
SIPART PS2 PA Manual
A5E00127926- -05
Page 15
Introduction

Introduction

1.1 General information about the positioner

The positioner is used to adjust and control pneumatic actuators. The controller operates electropneumatically with compressed air as an energy supply.
The positioner together with the PROFIBUS PA communications interface are components in a digital process automation system. It communicates with the master as a slave via the PROFIBUS PS field bus. The field bus is used not only for communication but also to supply the positioner with electrical power.
Purpose
For example, the positioner can be used to control valves as follows:
S with linear actuator (figure 1, page 15) or
1
Versions
Housing
S with part--turn actuator VDI/VDE 3845 (figure 2, page 15)
Different mounting types are available for linear actuators:
S NAMUR or IEC534
S integrated mounting to ARCA
S integrated mounting to SAMSON (non explosion proof version)
This means the positioner can be installed and operated on all common actuator systems.
The positioner is available for the following actuators:
S double--acting and
S single--acting
For following applications:
S potentially explosive or
S not potentially explosive applications.
The electronics with display, position feedback and valve block are integrated in the housing.
SIPART PS2 PA Manual A5E00127926- -05
13
Page 16
Introduction
The housing is available in three versions:
S Plastic housing for single-- and double--acting actuators
S Metal housing for single--acting actuators
S Explosion proof housing for single and double--acting actuators
Degree of protection
Explosion Protection
SIL applications
Options
The device is designed with IP66/NEMA4x degree of protection.
The intrinsically safe version can be used in hazardous areas in zone 1 or zone 2. The explosion proof version can be used in hazardous areas in zone 1 or zone 2. Explosion proof type ”n” versions can be used in explosion hazard zone 2 areas.
The positioners (version 6DR551* for single acting actuators) are also suitable for positioning on fittings with pneumatic actuators, which sat­isfy the special requirements for safety devices up to SIL 2 to IEC 61508 part 1--7 and IEC 61511 part 1--3. For this the SIL safety instructions in the ”SIL Safety Manual (PA/FF)” order number A5E00489773 must be followed.
The positioner can be expanded with various options modules (chapter
2.6, page 31). The following modules are available in all:
S I
module: Two--wire current output 4 to 20 mA for position feedback
y
S Alarm module: three digital outputs and 1 binary input
Accessories
Environmental Protection
S SIA module: one binary output for fault messages, two binary
outputs for limit value alarms
S Mechnical limit switch module: one binary output for the output of a
group error message, two switches for signalling two limit values that can be set mechanically.
S Manometer block: 2 or 3 manometers for single and double--
acting positioners
S Connection block (NAMUR) for safety valve block
S Mounting kits for linear and part--turn actuator
For decentralized installation of the positioner and position sensor:
S External position detection system
S Non-Contacting Position Sensor (NCS)
Only environmentally friendly materials have been used in the construction of the positioner.
The technical manual is printed on chlorine--free bleached paper.
14
SIPART PS2 PA Manual
A5E00127926- -05
Page 17
Introduction
1
2
3
1 Actuator 2 Positioner, single--acting in metal housing 3 Lantern 4 Manometer block, single--acting 5Valve
Figure 1 Positioner mounted on linear actuator (single--acting)
4
5
1
2
1 Positioner in plastic housing 2 Part--turn actuator 3 Manometer block, double- -acting
Figure 2 Positioner mounted on part--turn actuator (double--acting)
3
SIPART PS2 PA Manual A5E00127926- -05
15
Page 18
Introduction
1
2
4
3
1 Actuator 2 Positioner, single--acting in explosion proof housing 3 Lantern 4 Manometer block, single--acting
Figure 3 Explosion proof positioner mounted on linear actuator (single--acting)
1
3
2
1 Positioner double--acting in explosion proof housing 2 Part--turn actuator 3 Manometer block, double- -acting
Figure 4 Explosion proof positioner mounted on part--turn actuator (double--acting)
16
SIPART PS2 PA Manual
A5E00127926- -05
Page 19

1.2 General information regarding PROFIBUS

The PROFIBUS PA (PA = Process Automation) is a variant of the PROFIBUS--DP (DP = Decentral Peripheral) which is widely used in manufacturing engineering.
The PROFIBUS (Process Field Bus) is an open communication system for automation engineering and thousands are used all over the world. It is specified in the European standard EN 50170.

1.2.1 Transmission method

The PROFIBUS PA has a special transmission method and therefore satisfies the requirements of process automation and manufacturing engineering. This transmission method is defined in the international standard IEC61158--2. The low transmission speed reduces the power loss compared to the PROFIBUS--DP and therefore enables an intrinsically safe technique for use in hazardous areas.

1.2.2 Topology

The bus topology can, to a large extent, be freely selected so that line, star and tree structures are possible, as well as mixtures of these. All kinds of field devices such as transformers, actuators, analyzers, etc. can be connected to the PROFIBUS PA
Introduction
The main advantage is in:
S the saving of installation costs
S the possibility of more extensive diagnostics with an increase in the
availability of system parts
S the possibility of automatic tracing of system documentation
S the possibility of system optimization in operation
In an automation system, several PROFIBUS PA channels are usually connected to the fast PROFIBUS--DP with coupling units. The process control system is also linked to this.
Both bus systems use a uniform protocol layer. This makes the PROFIBUS PA a communication--compatible extension of the PROFIBUS--DP into the field.
SIPART PS2 PA Manual A5E00127926- -05
17
Page 20
Introduction
Master
(class 1)
PROFIBUS-DP
Slaves
(Field devices, decentralized peripherals,
secondary controls, mains transfer to PROFIBUS PA)
Figure 5 Typical PROFIBUS automation system
Figure 5 shows the section of a typical PROFIBUS automation system. The control system consists of two masters with distributed tasks.
The class 1 master looks after the control and regulation functions, while the class 2 master enables operating and monitoring functions. A cyclic exchange of measuring and setting data takes place between master 1 and the field devices. Parallel to this data, the status data of the field devices is transmitted to and evaluated in the class 1master. No field device parameters are set or other device information read during cyclic operation.
Master
(class 2)
I
PROFIBUS PA
8x
The information necessary for establishing communication is available to the control system from the stored, device--specific device master data (GS*) files. The files are available on the Internet at:
.siemens.com/sipartps2
www
Click on “More Info” and “--> Instructions and Manuals”.
One or more class 2 masters can access the field devices acyclically in addition to the cyclic mode. With this communication type further information can be fetched from the devices or settings made in the devices.

1.2.3 Properties of the PROFIBUS PA

The PROFIBUS PA enables bi--directional communication between a bus master and the field devices via a shielded two--wire line. At the same time the power is supplied to the two--wire field devices on the same lines.
18
SIPART PS2 PA Manual
A5E00127926- -05
Page 21

1.2.4 Profile

Introduction
Supplementary to the EN standard 50170, the PNO (PROFIBUS Userorganisation) has defined the functionality of the individual field device types in a so--called profile description. This profile defines minimum functional requirements and optional extensions. The device--internal Device Management supplies all the basic information necessary for finding the profile parameters to the control system configuration tool. With this, a parametering tool can operate all profile--conforming devices regardless of type and manufacturer.
Depending on the size of the system and thus the number of field devices and the required timing, the system must be implemented with one or more PROFIBUS PA channels. A PROFIBUS PA channel consists of the components shown in Figure 6.
Control room Field
PROFIBUS-DP
Coupler
PLS, PC
Power supply
T Terminating resistor FD Field device PC Personal computer PLS Process control system
Figure 6 PROFIBUS PA architecture

1.2.5 Interfacing

The central process control system PLS or, in the case of low requirements, a PC, is responsible for the control.
As a rule the signal conversion DP/PA, bus feeding and bus termination functions are combined in a coupling module. Depending on the number of PROFIBUS PA field devices to be operated in the automation system and the required timing, a DP/PA coupler or, in the case of higher requirements, a more powerful DP/PA link is used.
PROFIBUS-PA
T
FD
FD
T
additional cable termination
SIPART PS2 PA Manual A5E00127926- -05
19
Page 22
Introduction
An additional terminating resistor T must be fitted at the far end of the bus for transmission--technical reasons. When using the recommended bus cable, the theoretically possible line length (sum of all line sections) is a maximum of 1900 mm. In addition, the voltage drop over the lines supplying the field devices must be taken into account in the planning.
However, the current requirements of the individual users and voltage drop on the cable must also be taken into account in the planning. The individual field devices FD can be connected almost anywhere in the bus system. Further information can be found in the ”PROFIBUS PPNO Guide A”.
DP/PA--coupler or DP/PA--link are supplied by a power supply unit with SELV (Safety Extra Low Voltage). This power supply must have adequate reserves for bridging brief power failures.
The maximum number of devices that can be connected to a bus channel depends on their current consumption and the respective conditions of use. When operating in a safe area, the couplers/links can feed up to 400 mA into the bus.
In zones subject to explosion hazard, intrinsic safety is only ensured if the maximum power fed into the bus does not exceed certain voltage and current values. See chapter 7 ”Technical Data” (page 161) device in intrinsically safe version.
WARNING
!
To power the intrinsically safe PROFIBUS only certified power supply units (DP/P A couplers or links) must be used. See the EC--Type Examination Certificate ”for use in Potentially Explosive Atmospheres”.
When explosion proof versions of positioners are used in areas where the atmosphere is potentially explosive, they may be supplied with auxiliary electrical power only within the enclosed housing.
The openings for the electronic connections must be executed with EEx--d--certified cable glands or sealed with EEx--d--certified plugs, or the ”Conduit Tube System” must be used to provide an explosion barrier at a maximum distance of 46 cm (18 inches) from the housing.
The number of devices which can be connected to a bus channel can be determined from the maximum current consumption of the devices connected (according to standards 10 mA per device) and the available current. A current reserve should be planned for safety reasons, otherwise there is a risk that a defective device could overload the bus with its increased current consumption and the power supply and communication with all unaffected users could collapse. The power reserve quantity depends on the current increase in the event of an error specified by the manufacturer.
20
Every device has its own address to distinguish between the connected process devices.
SIPART PS2 PA Manual
A5E00127926- -05
Page 23
Introduction
Before operation make sure that the positioner addresses of two or more field devices are set on the bus. So that the addresses are unique, each address must only be assigned once. In principle, an address range from 1 to 125 is possible. In its as--supplied state, address 126 is set. The lower addresses are usually assigned to the masters in PROFIBUS systems. We therefore recommend starting address assignment for the positioners with 30.
The address setting is made either on the positioner using operating keys or via the bus with the SIMATIC PDM software. In the latter case, a new positioner is always connected to the bus and the new address set via software. After that, the next positioner is connected to the bus and the same procedure followed.
We recommend that you write the set address on the positioner with a permanent felt--tip pen.
For more detailed information about the components, assembly guidelines and configuration, see the technical description of the field technology package /2/.
SIPART PS2 PA Manual A5E00127926- -05
21
Page 24
Introduction
22
SIPART PS2 PA Manual
A5E00127926- -05
Page 25
Design and method of operation

Design and method of operation

The following chapter describes the mechanical and electrical design, the instrument components and method of operation of the positioner.

2.1 Overview

Introduction
The electropneumatic positioner forms a control system in connection with an actuator. The current position of the positioner is detected by a servo potentiometer and fed back as actual value x. In addition a separate sensor can be fitted to the positioner for purposes of position detection. The setpoint and actual value are output simultaneously on the display.
The setpoint is set by the control system and passed to the positioner by the PROFIBUS P A digitally.
2
The PROFIBUS PA variant of the positioner differs from previous versions in the bus interface. The basic functions of the positioner including operation and display are virtually unchanged.
The positioner operates as a predictive five--point switch by the output variable ±∆y of which the integrated actuating valves are controlled with pulse length modulation.
These actuating signals cause fluctuations in pressure in the actuator chamber(s) and thus adjustment of the actuator until the control error is zero.
Operation (manual) and configuration (structuring, initialization and parameterization) is effected by three keys and a display with the housing cover removed.
The standard controller has one binary input (BI1). This can be configured individually and can be used for blocking the operating modes for example. A further input (Shut down) has the function of moving the actuator to a pre--set safety position (end stop).
With the I as a two wire signal I
In addition the actuator can be monitored for two programmable limit values which respond on exceeding or dropping below the stroke or angle of rotation.
-option module, the current actuator position can be output
y
=4to20mA.
y
SIPART PS2 PA Manual A5E00127926- -05
23
Page 26
Design and method of operation
The limit value alarms are output by the alarm option module which can monitor and report the function of the positioner and the actuator additionally through a fault message output. The value of the control difference dependent on the travel time is monitored in automatic mode. The fault signal is always set when the control error cannot be leveled after a certain time because for example the valve is blocked or the mains pressure is insufficient. The three binary outputs are implemented as semiconductor outputs and are error self--reporting, i.e. the outputs respond even when the power supply fails or the electronics are defective.
Theactuatorcanalsobeblockedordriventoitsfinalpositions depending on the configuration for example by an external event via a binary input (BI2) on the alarm module.
If you require electrically independent limit value messages from the standard controller, you will have to use the SIA module with the slot initiators instead of the alarm module.
To be able to use the positioner with a variety of different part-turn and linear actuators, it has a friction clutch and switchable gearing.
The switchable gearing allows you to adjust the positioner for small and large lifts. You can switch using the yellow switch (9, Fig. 8, page 25) between 33_ (as delivered) and 90_.
The friction clutch (8, Fig. 8, page 25) allows you to set the working range, particularly for linear actuators, after installation. You thus do not have to ensure symmetrical mounting during the installation.
As it is not allowed to open the housing of an explosion proof version in a potentially explosive atmosphere, the shaft has an externally fitted, additional friction clutch (8, Fig. 9, page 26).
NOTICE
for the explosion proof version:
Only adjust the outer friction clutch (8, Fig. 9, page 26). The internal friction clutch (9, Fig. 8 page 25) is fixed and, for the explosion proof version, must not be adjusted.
24
SIPART PS2 PA Manual
A5E00127926- -05
Page 27

2.2 Design Rating Plate

Design and method of operation
(2)
(8)
(3)
(4)
(5)
(6)
(1) Order number (5) Serial number (2) Manufacturer (6) Place of manufacture (3) Product name (7) Protection class (4) Technical data (8) Observe manual
Figure 7 Design rating plate, example with protection class EEx ia/ib

2.3 Instrument components

(7)(1)
8
1 Input: Supply air 8 Transmission ratio selector 2 Output: Actuating pressure Y1 9 Adjustment wheel for friction clutch 3 Display 10 Motherboard 4 Output: Actuating pressure Y2 5 Operating keys 12 Ground cable (only for plastic housing) 6 Restrictor 13 Bus cable
6.1 Restrictor Y1 14 Terminal plate on cover
6.2 Restrictor Y2 7 Silencer
*)
in double--acting actuators
*)
*)
11 Terminals option modules
15 Purging air switch
7
Figure 8 View of the positioner (cover open); plastic housing
SIPART PS2 PA Manual A5E00127926- -05
25
Page 28
Design and method of operation
9
1
10
3
---­++
10
1 Input: Supply air 7 Transmission ratio selector 2 Output: Actuating pressure Y1 (only possible with positioner open) 3 Display 8 Adjustment wheel for friction clutch 4 Output: Actuating pressure Y2 5 Operating keys 10 Terminals option modules
6.1 Restrictor Y1 12 Safety catch
6.2 Restrictor Y2
*)
in double--acting actuators
*)
*)
2121
6.1
138238 9
6.2
45
9 Terminals standard controller
7
8
Figure 9 View of the explosion proof version of the positioner

2.3.1 Motherboard

The motherboard contains all the electronic elements such as the CPU, memory, A/D converter. It also contains the display and the operating keys.
In addition, the terminal strips for connecting the option modules are also on the motherboard.

2.3.2 Electrical conn ectio n s

The terminals of the standard controller, the Iy--, SIA-- and alarm--option module are arranged at the left--hand front edges and offset against each other in staircase form.
A module cover protects the modules from being pulled out and prevents incorrect installation.
26
SIPART PS2 PA Manual
A5E00127926- -05
Page 29

2.3.3 Pneumatic connections

The pneumatic connections are on the right hand side of the positioner (figure 10 and figure 11).
1
2
3
4
5
1 Actuating pressure Y1 in single-- and double--acting actuators 2 Feedback shaft 3 Supply air P 4 Actuating pressure Y2 in double- -acting actuators 5 Exhaust air output E with silencer on the bottom of the instrument
Figure 10 Pneumatic connection in normal version
z
Design and method of operation
1
2
3
4
5
6
7
1 Restrictor Y2 *) 5 Actuating pressure Y1 2 Restrictor Y1 6 Exhaust air output E 3 Actuating pressure Y2 *) 7 Housing ventilation (2x) 4 Supply air PZ
*)
in double--acting actuators
Figure 11 Pneumatic connection in explosion proof version
In addition, there are pneumatic connections on the back of the positioner for integrated installation in single--acting linear actuators.
S Actuating pressure Y1
SIPART PS2 PA Manual A5E00127926- -05
S Exhaust air output E (not in explosion proof version)
In the ex--factory state, these connections are sealed by screws (see figure 20, page 45, figure 22, page 46 and figure 23, page 47).
27
Page 30
Design and method of operation
The exhaust air output E can be provided for supplying dry instrument air to the tapping chamber and spring chamber to prevent corrosion.
Figure 12, page 28 shows the pneumatic connection variants for the different actuator types, the positioning acting and the safety position after power failure.
Positioning pressure Connection
Y1
Y1
Y2
Y1
Y1
Y2
Closed
Closed
Actuator type
Open
Open
OpenClos ed
OpenClosed
Safety position after power failure”
electrical pneumatic
Closed Closed
Open Open
Open
Last position
(before power
failure)
Closed
In part--turn actuators the direction of rotation counterclockwise looking onto the actuating shaft of the valve is usually defined as
Open.
Open
Closed
Y1
up
Down Down
down
Y1
up
down
Up Up
Y2
Y1
up
down
Up
Y1
Y2
up
down
Down
Figure 12 Pneumatic connection positioning
Last position
(before power
failure)
up down
28
SIPART PS2 PA Manual
A5E00127926- -05
Page 31
Design and method of operation

2.3.4 Mounting kit

The positioner can be mounted on almost all actuators with the appropriate mounting kit.

2.3.5 Purge air switching (not in the explosion proof version)

The purge air switch is accessible above the pneumatic terminal strip with the housing open (figure 13). In the IN position the inside of the housing is purged with very small amounts of clean, dry instrument air. In the OUT position the purge air is fed directly to the outside air (for more information: see Chapter 3.3, page 47).
Figure 13 Purge air switch on the valve block, view of the positioner onto pneumatic connection side
with cover open

2.3.6 Restrictors

In order to achieve travel times of > 1.5 s in small actuators, the air rate can be reduced with the restrictors Y1 and Y2 (figure 14, in explosion proof version, see figure 11, page 27). By turning to the right the air rate is reduced up to shutting off. To set the restrictors it is advisable to close them and then open them slowly (see initialization RUN3).
In the case of double-acting valves make sure that both chokes are set approximately equal.
Hexagon socket 2.5 mm
Y1 Y2
Figure 14 Restrictors
SIPART PS2 PA Manual A5E00127926- -05
29
Page 32
Design and method of operation

2.4 Method of operation

The electropneumatic positioner forms a control circuit with the pneumatic actuator in which the actual value x is the position of the actuator bar in linear actuators or the position of the actuator shaft in part--turn actuators and the command variable w is supplied digitally via the PROFIBUS.
The stroke or part--turn movement of the actuator is transferred by the appropriate mounting accessories, the feedback shaft and a play--free switchable gearwheel to a high quality conductive plastic potentiometer and to the analog input of the microcontroller . The current position of the positioner can also be set using an external sensor. Determining the stroke distance or the angle of rotation is done by an external position detection system (e.g. non--contacting position sensor or a potentiometer) directly on the actuator.
The positioner may correct the angle error of the stroke tap, compares the actual value x with the setpoint w and calculates the manipulated variable increments Δy. Depending on the size and direction of the control error (x- -w) the piezo--controlled supply air or exhaust air valve is opened. The volume of the actuator integrates the positioning increments to actuating pressure y open which moves the actuator bar or actuator shaft approximately proportionally. These positioning increments change the actuating pressure until the control error becomes zero.
The pneumatic actuators are available in single and double--acting versions. Only one pressure chamber is aerated or deaerated in the single--acting version. The resulting pressure operates against a spring. In the double--acting version, two pressure chambers are counteractive. In this case the one volume is deaerated when the other volume is aerated.
The control algorithm is an adaptive predictive five--point switch (see figure 15, page 31). The valves are controlled with continuous contact at large control errors (fast step zone). At medium control errors the valve is controlled by pulse length modulated pulses (short step zone).
No actuating pulses are output in the small control error zone (adaptive dead zone). The dead zone adaptation and the continuous adaptation of the minimum pulse lengths in automatic operation cause the best possible control accuracy to be achieved at the lowest switching frequency. The start parameters are determined during the initialization phase and stored in a non--volatile memory. These are basically the real actuating path with the mechanical limit stops, the travel times, the size of the dead zone etc.
In addition the number of fault messages, changes in direction and the number of strokes are determined and stored every 15 minutes during operation. These parameters can be read out and documented by the communication programs such as AMS. Conclusions as to the wear on the fitting can be drawn (diagnostic function) especially by comparing the old value with the currently determined values.
30
SIPART PS2 PA Manual
A5E00127926- -05
Page 33
Design and method of operation
.
Figure 15 Method of operation five--point switch
NOTE
The exhaust air valve is always open when there is no current.

2.5 State as supplied

There are no mechanical mounting accessories on the controller in the state as supplied. These must be ordered and installed according to the ”operating instructions” depending on the application.
The respective connections for single or double--acting versions are prepared at the factory as ordered.
The pneumatic connections on the rear are sealed.
The input for the safety shut down is not activated.

2.6 Option modules

2.6.1 Installation of options modules in normal and intrinsically safe versions

The following option modules are available for the positioner in the standard and the intrinsically safe version:
module
-- I
y
-- Alarm module
SIPART PS2 PA Manual A5E00127926- -05
-- SIA module
-- Mechanical limit switch module
-- EMC filter module
31
Page 34
Design and method of operation
Installation
.
Opening the instrument
.
The option modules are secured by a assembly covering ((1), see fi­gure 16, page 33) and mechanically fixed.
NOTE
The housing must be opened to install the options modules. The degree of protection IP66 is not guaranteed as long as the positioner is open.
To open the positioner, the four screws of the housing cover must be loosened with a Phillips screwdriver.
Disconnect or isolate the power supply cables.
Remove the module cover (1). To do this, the two screws (1.1) must be removed with a screwdriver.
NOTE
To prevent premature wearing of the fixture by the self--tapping screws (1.1), the following method of mounting the module cover (1) has proven effective.
1. Turn the screws counterclockwise until you feel them snap into the thread
2. Tighten both screws carefully in clockwise direction
32
SIPART PS2 PA Manual
A5E00127926- -05
Page 35
Design and method of operation
6
1
1.1
5
2.1
1.1
2.1
2
12
10
4
7
11
3
7.2 7.3
7.1 8 9
1 Module cover 7 SIA-module and mechanical limit switch module
1.1 Fixing screws 7.1 Special screw 2 Motherboard 7.2 Actuating disc for A1 (terminals 41 and 42)
2.1 Fixing screws 7.3 Actuating disc for A2 (terminals 51 and 52) 3I
-module with ribbon cable (6) 8 Adjusting wheel for friction clutch
y
4 Alarm module with ribbon cable (5) 9 Transmission ratio selector 5 Ribbon cable for alarm module 10 Insulating cover 6 Ribbon cable for Iy-module 11 Pneumatic block
Figure 16 Installation of options modules in normal and intrinsically safe version
12 Actuating disc bearings
SIPART PS2 PA Manual A5E00127926- -05
33
Page 36
Design and method of operation

2.6.2 Installation of options modules in explosion proof version

The following option modules are available for the positioner in the explosion proof version:
module
-- I
y
-- Alarm module
Installation
.
The options modules are protected and mechanically fixed by a module cover ((1), see figure 17, page 36).
NOTE
The housing must be opened to install the options modules. The degree of protection IP66/NEMA4x is not guaranteed as long as the positioner is open.
WARNING
!
In areas in which the atmosphere may be potentially explosive, the explosion proof positioner may only be supplied with electrical auxiliary power when the housing is closed and when built--in, approved electronics are used.
The feed--though openings for the electronic connections must be sealed with EEX-d certified cable glands or EEx-d certified plugs or an ignition lock must be mounted at a maximum distance of 46 cm (18 inches) when using the “conduit”--system.
Open the positio­ner
34
See figure 17, page 36. Disconnect or isolate the power supply cables first.
To open the positioner, the safety catch (12) must be opened and the screw--on cover unscrewed.
After loosening the four fixing screws (13.1) the complete rack (13) can be removed. The actuator may have to be turned so that the clutch can be easily disengaged.
Remove the module cover (1). To do this, the two screws (1.1) must be removed with a screwdriver.
SIPART PS2 PA Manual
A5E00127926- -05
Page 37
Design and method of operation
.
NOTE
To prevent premature wearing of the fixture by the self--tapping screw (1.1) next to the display, the following method of mounting the module cover (1) has proven effective.
1. Turn the screws counterclockwise until you feel them snap into the thread.
2. Tighten both screws carefully in clockwise direction.
SIPART PS2 PA Manual A5E00127926- -05
35
Page 38
Design and method of operation
1.1
10
13.1
12
8
7
13.1
56
13
1
1.1
2
4
3
11
1 Module cover 7 Transmission ratio selector
1.1 Fixing screws 8 Adjusting wheel for friction clutch 2 PA module 10 Housing 3I
module with ribbon cable 11 Screw--on cover
y
4 Alarm module with ribbon cable 12 Safety catch 5 Ribbon cable for alarm module 13 Rack 6 Ribbon cable for I
module 13.1 Fixing screws
y
Figure 17 Installation of the options modules in the proof version

2.6.3 Iy module

Function
36
With the Iy-option module, the current actuator position can be output as a two wire signal I
= 4 to 20 mA – potentially isolated from the
y
standard controller. The dynamic control of the I error self--reporting.
module makes it also
y
SIPART PS2 PA Manual
A5E00127926- -05
Page 39
Design and method of operation
Installation

2.6.4 Alarm module

Function
The Iymodule (3) is pushed in to the bottom compartment of the mo­dule rack up to the stop and connected by the enclosed 6-wire ribbon cable (6) to the motherboard (see figure 16, page 33).
The alarm module contains
S 3 digital outputs and
S 1 digital input
The digital outputs serve to output fault messages and alarms. The configuration is described in chapter 4.4, page 98, with the parameters 44 to 54.
By an external signal applied at digital input (DI2) the actuator can be blocked or driven to its limit positions for example depending on the configuration. The configuration is described in chapter 4.4, page 98, with the parameters 43.
The alarm module is available in two versions:
S explosion protected for connecting to switching amplifier
EN 60947- -5--6
Installation
S non--explosion protected for connection to voltage sources with a
maximum 35 V
The semiconductor outputs of the alarm module report an alarm (signal state Low) by switching off with high resistance. They are conductive in the High state (without alarm). The dynamic control makes them error self--reporting.
The outputs are potentially isolated from the basic circuit and each other.
The digital input is double.
S one potential isolated for voltage level
S one not potential isolated for floating contacts
These two inputs are designed as logic OR links.
The alarm module (4) is pushed in underneath the motherboard into the module rack up to the stop and connected by the enclosed 8-wire rib­bon cable (5) to the motherboard (see figure 16, page 33).
SIPART PS2 PA Manual A5E00127926- -05
37
Page 40
Design and method of operation

2.6.5 SIA module

The SIA module contains three digital outputs.
Function
Installation
A collected fault message (see alarme module) is output via a digita­loutput. The floating digital output is implemented as a self error repor­ting semiconductor output.
The other two digital outputs are used for reporting two mechanically adjustable limit values (L1, L2) by slot initiators. The two binary outputs are electrically independent of the rest of the electronics.
(Slot Initiator Alarm module) Proceed as follows for installation:
1. Remove all the electrical connections from the motherboard (2).
2. Loosen the two fixing screws (2.1) of the motherboard.
3. Snap out the motherboard by carefully bending the four holders.
4. Insert the SIA-module (7) from above up to the top pcb rail of the container.
5. Push the SIA module in the pcb rail of the container about 3 mm to the right.
6. Screw the special screw (7.1) through the SIA module into the axle of the positioner (Torque: 2 Nm):
CAUTION
The pin pressed into the actuating disc bearing (12) must be adjusted to just before touching with the special screw. The actuating disc bea­ring and the special screw must then be turned simultaneously so that the pins slot into the special screw.
7. Place the insulating cover (10) over the SIA module underneath the surface of the motherboard at the container wall on one side. The recesses in the insulating cover must slot into the correspon­ding lugs on the container wall. Place the insulating cover on the SIA module by carefully bending the container walls.
8. Snap the motherboard into the four holders and screw it tight again with the two fixing screws (2.1).
9. Make all the electrical connections between the motherboard and the options with the ribbon cables provided and between the mo­therboard and potentiometers with the potentiometer cable.
10. Fix the enclosed module cover instead of the standard version with the two screws (1.1).
38
SIPART PS2 PA Manual
A5E00127926- -05
Page 41
1 1. Select the plates which already exist on the standard version of the
12. Make the electrical connections.
Setting the two limit values:
Design and method of operation
module cover from the set of plates enclosed. Stick the selected plates according to the standard version to the mounted module cover. In the case of the version which doesn’t feature explosion protection, stick the warning sign (figure 2) onto the side of the ground plate opposite the typeplate.
.
.
NOTE
Connect a suitable display instrument such as the Initiator--Tester type 2/Ex made by Peperl+Fuchs to the terminals 41 and 42 or terminals 51 and 52 of the SIA module to be able to see the switching state of the slot initiators.
1. Drive the actuator to the first desired mechanical position.
2. Adjust the top actuating disc (7.2) by hand until the output signal on terminals 41 and 42 changes.
3. Drive the actuator to the second desired mechanical position.
4. Adjust the bottom actuating disc (7.3) by hand until the output si­gnal on terminals 51 and 52 changes.
NOTE
If you turn the actuating disc beyond the switching point up to the next switching point, you can set a high-low or a low-high change.
To avoid the actuating discs being accidentally adjusted during opera­ting, they are relatively sluggish. The following remedy might be of help if you are having trouble with the adjustment: open and close the ac­tuator several times while holding the actuating discs. T his temporarily reduces the friction. This allows an easier and finer adjustment.

2.6.6 Mechanical limit switch module

The mechanical limit switch module contains the following:
S A binary output for the output of a group error message)
S Two switches for signaling two limit values that can be set mechani-
cally. These two switches are electrically independent from the rest of the electronic system
SIPART PS2 PA Manual A5E00127926- -05
39
Page 42
Design and method of operation
Installation
CAUTION
The following maximal values only refer to the clamps 41 and 42 as well as the clamps 51 and 52.
Maximal voltage (not Ex) AC 250 V or DC 24 V
Maximal current (not Ex) AC/DC 4 A
Maximal voltage (Ex) DC 30 V
Maximal current (Ex) DC 100 mA
When you supply one circuit breaker with extra--low voltage (AC < 16 V or DC < 35 V) and the other with low voltage, you ensure that the cable insulation is doubled.
When operating the switch with low voltage, you must position the low voltage circuits so that they are separated from the extra--low voltage circuits.
Follow the instructions below for installation:
1. Remove all electrical connections on the motherboard (2).
2. Loosen carefully both fixing screws (2.1) for the motherboard.
3. Insert the limit switch module (7) from above until it reaches the upper printed circuit board rail of the container.
4. Snap put the motherboard (2) by carefully bending the four hol­ders.
5. Push the mechanical limit switch module (7) in the printed circuit board rail of the container ca. 3 mm towards the right
6. Screw the special screw (7.1) through the mechanical limit switch module into the axle of the positioner (torque: 2 Nm).
CAUTION
The pin pressed into the actuating disc bearing (12) must be adju­sted just before it touches the special screw (7.1) In order that the pin slot into the special screw, you must then turn the actuating disc bearing and the special screw simultaneously
40
SIPART PS2 PA Manual
A5E00127926- -05
Page 43
Design and method of operation
7. Place the insulating cover (10) over the mechanical limit switch module underneath the surface of the motherboard onto the con­tainer on the wall. The recesses in the insulating cover must slot into the corresponding lugs on the container wall. Place the insula­ting cover on the mechanical limit switch module by carefully ben­ding the container walls.
8. Snap the motherboard board into the four holders and screw it tight again with the two fixing screws (2.1).
9. Make sure all electrical connections between the motherboard and the options using the ribbon cables provided and between the mo­therboard and potentiometer using the potentiometer cable.
10. Fix the enclosed module cover (1) instead of the standard version using the two screws (1.1).
.
.
NOTE
To prevent premature wearing of the fixture by the self--tapping screws (1.1), the following method of mounting the module cover (1) has pro­ven effective:
S Turn the screws counterclockwise until you feel them snap into the
thread.
S Tighten both screws carefully in a clockwise direction
NOTE
Before connecting up the limit contact module, ensure that:
S only qualified personnel connect and set the limit contact module. S all cables are de--energized. S the cables are stripped so that the insulation is flush with the termi-
nal when plugging in the wires.
S the ends of stranded wires have sleeves S the connection cables are insulated according to the permitted cur-
rent load.
S the permissible working temperature of the cables exceeds the ma-
ximal ambient temperature by minimum 25 _C.
S the Ex--version is only allowed to be operated in intrinsically safe
circuits with approved switching amplifiers.
SIPART PS2 PA Manual A5E00127926- -05
Connection
1. Loosen the screw (1) on the cover (2).
2. Push the cover (2) till it reaches the front stop.
3. Screw each cable tight in the appropriate terminal.
4. Push the cover (2) till it stops at the motherboard.
5. T ighten the screw (1) of the cover (2).
6. Fix the cables of each switch in pairs on the mounting eye using the cable binders provided (3).
41
Page 44
Design and method of operation
Figure 18 Cable connection
Setting the two limit values:
1. Drive the actuator to the first desired mechanical position.
2. Adjust the top actuating disc (7.2) by hand until the output signal on terminals 41 and 42 changes.
.
3. Drive the actuator to the second desired mechanical position.
4. Adjust the bottom actuating disc (7.3) by hand until the output si­gnal on terminals 51 and 52 changes.
NOTE
To avoid the actuating discs (7.2/7.3) being accidentally adjusted du­ring operation, they are relatively sluggish. The following remedy might be of help if you are having trouble with the adjustment: open and close the actuator several times while holding the actuating discs. This temporarily reduces the friction. This allows an easier and finer adjust­ment.
42
SIPART PS2 PA Manual
A5E00127926- -05
Page 45

2.6.7 EMC filter module

The positioner can also be driven by an external position sensor (po­tentiometer or NCS) (see page 50 ”3.3.2 Instructions for using positio­ners which are exposed to strong accelerations or vibrations”). An EMC filter module, order number C73451--A430--D23, is required for this.

2.6.8 Accessories

Design and method of operation
Y1
Y1
PZ
Figure 19 Manometer block (left for single-acting, right for double-acting actuators)
Manometer block
The manometer block for single-acting actuator contains two manometers which are screwed to the lateral pneumatic connection of the positioner with O-rings. The values for the input pressure (supply air PZ) and output pressure (actuating pressure Y1) are displayed.
The manometer block for double-acting actuators contains three manometers which are screwed to the lateral pneumatic connection of the positioner with O-rings. The values for the input pressure (supply air PZ) and output pressure (actuating pressure Y1 and Y2) are displayed.
PZ
Y2
SIPART PS2 PA Manual A5E00127926- -05
43
Page 46
Design and method of operation
44
SIPART PS2 PA Manual
A5E00127926- -05
Page 47
Preparing for operation

Preparing for operation

This chapter describes all the preparations necessary for operating the positioner.

3.1 Instrument identification (type key)

The order number of the positioner is printed on the rating plate and on the packaging. Compare this with the order number in chapter 8.1, page 168
Installation of any modules required is described in chapter 2.6, page 31 of this technical manual.

3.2 Dimensional drawings

3
60
50x4xM6
h9
7
9 deep
1
3729
48
M20 x 1.5 or NPT adapter
15
14,5
95
2
Y1
65
80
13,5
96,6
23
88,5
E
58
33
M8, 9 deep
182
8
7
38,5
Y1
PZ
Y2
All air connections G 1/4 or 1/4” NPT
29,5
72
29,5
11, 2
Figure 20 Dimensional drawing version plastic housing 6DR5xx0
SIPART PS2 PA Manual A5E00127926- -05
45
Page 48
Preparing for operation
14
25
12
10
5
3x G1/4or 1/4” NPT
9,5
90
79,5
2xM6
29,5
58,75
82
Thread depth 5.5
50
5,3
20,5
M4
3,5
9,5
9
5
Figure 21 Dimensional drawing terminal strip for plastic housing
50x4xM6
9 deep
2
Y1
65
E
M8, 9 deep
23
58
182
13,5
96,6
88,5
8
7
38,5
7
34,5
M20 x 1.5 or NPT--adapter
h9
1
14,5
84
29
27,5
All air connections G 1/4 or 1/4” NPT
15
12
6,5
Y1
29,5
29,5
11, 2
59
14
PZ
Figure 22 Dimensional drawing version metal housing 6DR5xx1
46
SIPART PS2 PA Manual
A5E00127926- -05
Page 49
Preparing for operation
M8, 14 deep (4x)
43
65
M6, 11 deep (4x)
129,5
23
7,75
50
60
3,5
All air connections
1/
G
or1/4”NPT
4
25
34
4,5
M6, 8 deep (2x)
M20, M25 or
1/
”NPT (2x)
2
10,25
19,25
1)
7,5
25,7
1)
Connection 238/Y2 only in
E
12
87,2
14,3
33,5
7
33,5
double--acting version
158,5
82,5
136.5
235,3
8h9
Figure 23 Dimensional drawing for positioner with metal housing in explosion proof version 6DR5xx5

3.3 Assembly

General
WARNING
!
To avoid injury or mechanical damage to the positioner/mounting kit, the following order must be observed for assembly:
1. Mechanical fitting of positioner this chapter
2. Connection of electric power supply see chapter 3.4, p. 62
3. Connection of pneumatic power supply see chapter 3.5, p. 73
4. Put into operation see chapter 3.6, p. 74
Please also observe the warning on page 10 and 62!
SIPART PS2 PA Manual A5E00127926- -05
47
Page 50
Preparing for operation
.
!
NOTE
The positioner will be equipped at the factory and delivered complete with the necessary options at the customer’s request. Options modules may only be retrofitted by our service technicians.
The positioner must be assembled -- especially in a moist environment
-- in such a way as to rule out freezing of the positioner axle at low ambient temperature.
The operating keys must be covered to prevent liquid getting in.
WARNING
In the combination of components it must be ensured that only positioners and options modules are combined which are approved for the respective area of application. This applies especially for safe operation of the positioner in areas in which the atmosphere is potentially explosive (zone 1 and 2). The instrument categories (2 and
3) of the instrument itself and those of its options must be observed.
In addition, you must always make sure that no water gets into an open housing or screw--type gland. This may be the case for example when the positioner cannot be finally assembled and connected immediately.
It generally applies that the positioner may only be operated with dry compressed air. Therefore use the normal water traps. An additional drying unit may even be necessary in extreme cases. This is particularly important when operating the positioner at low ambient temperatures. Please set the purge air switch (on the valve block above the pneumatic terminals) additionally to the ”OUT” position.
Use a sufficiently rugged console (e.g. plate thickness > 4 mm with reinforcements) for part--turn actuators and the mounting kit ”linear actuator” or integrated connection for linear actuators.

3.3.1 Instructions for using positioners in a wet environment

This information gives you important instructions for the assembly and operation of the positioner in a wet environment (frequent, heavy rain and/or prolonged tropical condensation) in which the IP66 degree of protection is no longer sufficient and especially when there is a danger that water may freeze.
To prevent water getting into the instrument in normal operation (e.g. through the exhaust air openings) or the display being poorly legible, please avoid the unfavorable installation positions illustrated in figure 24.
48
SIPART PS2 PA Manual
A5E00127926- -05
Page 51
Figure 24 Favorable and unfavorable installation positions
If conditions oblige you to operate the positioner in a unfavorable installation position, you can take additional precautionary measures to prevent penetration by water.
Preparing for operation
Procedure
.
NOTE
Never clean the positioner with a high pressure water jet because the IP66 degree of protection is inadequate protection for this.
The necessary additional measures to prevent penetration by water depend on the installation position chosen and you may additionally require:
S screw--type gland with sealing ring (e.g. FESTO: CK --1 / 4--PK--6)
S plastic hose approx. 20 to 30 cm (e.g. FESTO PUN-- 8X1,25 SW)
S cable straps (number and length depends on local conditions)
S Connect the pipes in such a way that rain water which runs along the
pipes can drip off before it reaches the terminal strip of the positioner.
S Check the electrical connections for perfect firm contact.
S Check the seal in the housing cover for damage and contamination.
Clean and replace if necessary.
S Mount the positioner if possible so that the sinter bronze silencer faces
downwards on the underside of the housing (vertical installation position). If this is not possible, the silencer should be replaced by a suitable screw--type gland with a plastic hose.
SIPART PS2 PA Manual A5E00127926- -05
49
Page 52
Preparing for operation
Assembly of the screw--type gland with plastic hose
S Unscrew the sinter bronze silencer from the exhaust air opening on
the underside of the housing.
S Screw the screw--type gland mentioned above into the exhaust air
opening.
S Mount the above mentioned plastic hose on the screw--type gland
and check the good fit.
S Fix the plastic hose with a cable strap to the fitting so that the
opening faces downwards.
S Make sure that the hose has no kinks and the exhaust air can flow
out unhindered.

3.3.2 Instructions for using positioners which are exposed to great accelerations or vibrations

NOTICE
for explosion proof versions:
Only adjust the outer friction clutch (8, Fig.17, page 36). The internal friction clutch (8, Fig.16 page 33 ) is fixed and, for the explosion proof version, must not be adjusted.
The electro--pneumatic positioner features a friction clutch and a swit­chable drive and is, therefore, universally applicable for part--turn and linear actuators. That’s why it is not necessary to take a zero--point into consideration when implementing part--turn actuators. Similarly, there is no need to ensure that the extension is symmetrically attached when implementing linear actuators. In both cases, the work space can be adjusted afterwards via the friction clutch.
The switchable drive can be used to adjust the positioner for short or long strokes.
Large accelerating forces can occur on fittings subject to heavy mecha­nical wear and tear, such as openings which could break off, valves subject to heavy vibrations as well as beating blast pipes. In some ca­ses, these forces can far exceed the specifications. In extreme cases, these forces could even cause the friction clutch to shift.
For these cases, the positioner is equipped with a position--securing device for holding the friction clutch in place. Furthermore, it is also possible to lock the transmission ratio selector into position, thus pre­venting it from shifting due to the influences stated above.
50
Both setting options are designated accordingly by icons on additional signs (see Fig. 25 page 51).
SIPART PS2 PA Manual
A5E00127926- -05
Page 53
Preparing for operation
Procedure
After you have mounted the positioner and commissioned it completely, you can set the friction clutch torque as follows:
S Plug a conventional 4 mm wide screwdriver into a slot in the yellow
wheel.
S Then turn the yellow wheel to the left with the screwdriver until it
snaps in audibly. This increases the torque of the friction clutch.
S A fixed friction clutch is recognizable from an approx. 1 mm wide
gap between the yellow and black wheel.
S If you have to make a zero point setting, e.g. after changing the
drive, please reduce the torque first by turning the yellow wheel to the right stop. After the zero point setting, you can fix the friction clutch as described above.
To lock the transmission ratio selector, takt the unit as factory set and do as follows:
S Using a conventional flat headed screwdriver (approx. 4 mm wide)
turn the yellow wheel underneath the clamps to the left or right according to your chosen setting (either 33_ or 90_) until it snaps in audibly.
S In order to set the transmission ratio selector any locks in place
must first be released. Hence the yellow wheel must first be put into the original factory set position in order to reset the transmission ratio selector if necessary, e.g. after replacing the actuator.
90_
(1)
90
33
33_
(1) Transmission ratio switch interlock (2) Open (3) Friction clutch (4) Close
Figure 25 Adjustable retaining device for the friction clutch
(2)
(3)
(4)
SIPART PS2 PA Manual A5E00127926- -05
51
Page 54
Preparing for operation
External position detection
Applications in which the measures described above are inadequate are also conceivable. This applies for instance with continuous and heavy vibration, increased or too low ambient temperatures and in the case of nuclear radiation.
The separate attachment of position displacement sensor and controller unit can help here. A universal component is available which is suitable both for linear and part--turn actuators.
You require the following:
S The position detection system (order no. C73451--A430--D78). This
consists of a SIPART PS2 housing with integrated friction clutch, built--in potentiometer and various dummy plugs and seals.
S or a Non--Contacting Position Sensor (e.g. 6DR4004--6N)
S The controller unit, any positioner version.
S The EMC filter module, this is a set together with cable clips and
M--20 screw- -type cable gland and has the order number C73451--A430--D23. The EMC filter module must be installed in the positioner. The installation instructions enclosed with the EMC filter module explain how to assemble the components.
S A 3- -wire cable for connecting the components.
This EMC filter module always has to be used for the controller unit whenever the external position detection unit C73451-A430-D78 is to be replaced by a random drive--mounted potentiometer (resistance va­lue 10 kOhm) or if a NCS sensor is to be installed.
WARNING
!
The explosion proof version may not be run together with the external position detection syst em.
52
SIPART PS2 PA Manual
A5E00127926- -05
Page 55
Preparing for operation
3.3.3 Mounting kit ”linear actuator” 6DR4004--8V and 6DR4004--8L
The scope of delivery of the mounting kit” linear actuator IEC 534 (3 mm to 35 mm)” are contained (ser. no. see figure 26, page 55):
Ser. no. pieces Designation Note
1 1 NAMUR mounting kit bracket
IEC534
2 1 Pick--up bracket Guides the roller with carrier pin and turns lever
3 2 Clamping assembly Mounting of pick--up bracket on actuator spindle
4 1 Carrier pin Assembly with roll (5) on lever (6)
6 1 Lever NAMUR Forstrokerange3mmto35mm
7 2 U bolt Only for actuators with columns
8 4 Hexagon head screw M8 x 20 DIN 933--A2
9 2 Hexagon head screw M8 x 16 DIN 933--A2
10 6 Lock washer A8 -- DIN 127--A2
11 6 Flat washer B 8,4 -- DIN 125--A2
12 2 Flat washer B 6,4 -- DIN 125--A2
14 1 Spring washer A6 -- DIN 137A--A2
15 1 Lock washer 3.2 -- DIN 6799--A2
16 3 Spring washer A6 -- DIN 127--A2
17 3 Socket cap screw M6 x 25 DIN 7984--A2
18 1 Hexagon nut M6 -- DIN 934--A4
19 1 Square nut M6 -- DIN 557--A4
21 4 Hexagon nut M8 -- DIN 934--A4
Standardized connection for mounting console with ledge, column or plane surface
arm
For stroke ranges> 35 mm to 130 mm (special delivery), lever 6DR4004--8L is required additionally

3.3.4 Assembly p rocedu re (see figure 26, page 55)

1. Mount clamping assembly (3) with hexagon socket cap screws (17) and lock washer (16) on the actuator spindle.
2. Insert the pick--up bracket (2) into the recesses of the clamping assembly. Set the necessary length and tighten the screws so that the pick--up bracket can still be shifted.
3. Insert the premounted pin in the lever (6) and assemble with nut (18), spring washer (14) and washer (12).
4. The value of the stroke range specified on the actuator or if this does not exist as a scaling value, the next greatest scaling value is set. The center of the pin must be in line with the scaling value. The same value can be set later under parameter 3.YWAY in commissioning to display the way in mm after initialization.
5. Assemble the hexagon socket cap screw (17), spring washer (16), washer (12) and square nut (19) on the lever .
6. Push the premounted lever onto the positioner axle up to the stop and fix with the hexagon socket cap screw (17).
7. Fit the mounting bracket (1) with two hexagon head screws (9), lock washer (10) and flat washer (1 1) on the rear of the positioner.
SIPART PS2 PA Manual A5E00127926- -05
53
Page 56
Preparing for operation
8. Selection of the row of holes depends on the width of the actuator yoke. The roll (5) should engage in the pick--up bracket (2) as close as possible to the spindle but may not touch the clamping assembly.
9. Hold the positioner with the mounting bracket on the actuator so that the pin (4) is guided within the pick--up bracket (2).
10. Tighten the pick--up bracket.
1 1. Position the mounting parts according to the type of actuator.
-- Actuator with ledge: Hexagon head screw (8), flat washer (11) and lock washer (10).
-- Actuator with plane surface: Four hexagon head screws (8), flat washer (11) and lock washer (10).
-- Actuator with columns: Two U bolts (7), four hexagon nuts (21) with flat washer (11) and lock washer (10).
12. Secure positioner onto the yoke using the previously positioned mounting parts.
.
NOTE
Set the height of the positioner so that the horizontal lever position is reached as close to the stroke center as possible. You can use the lever scale as orientation. If no symmetrical mounting is possible it must be guaranteed that the horizontal lever position is passed through within the stroke range.
54
SIPART PS2 PA Manual
A5E00127926- -05
Page 57
Preparing for operation
2
16
17
1)
3
Without explosion proof version
11
10
9
1
17
16
12
19
2)
18
14
12
6
4
3)
Explosion proof version:
11
10
9
1
4)
11
10
9
11
10
9
Figure 26 Assembly procedure (linear actuator)
SIPART PS2 PA Manual A5E00127926- -05
55
Page 58
Preparing for operation
1
10
8
Mounting on yoke
11
with ledge
5)
11
Mounting on yoke with plane surface
11
Mounting on yoke with columns
10
8
10
7
21
as required
Figure 26 Assembly procedure (linear actuator) continued
3.3.5 Mounting kit ”part--turn actuator” 6DR4004--8D
The scope of delivery of the mounting kit ”part--turn actuator” contains (ser. no. see figures 27 and 28):
Ser. no. Pieces Designation Note
2 1 Coupling wheel Mounting on position feedback shaft of the
SIPART PS2 3 1 Carrier Mounting on end of actuator shaft
4 1 Multiple plate Indication of actuator position, comprising 4.1
and 4.2
4.1 8 Scales Different divisions
4.2 1 Pointer mark Reference point for scale
14 4 Hexagon head screw DIN 933 -- M6 x 12
15 4 Lock washer S6
16 1 Fillister head screw DIN84--M6x12
17 1 Washer
DIN 125 -- 6.4
18 1 Hexagon socket head screw Premounted with coupling wheel
19 1 Allen key For item 18
56
SIPART PS2 PA Manual
A5E00127926- -05
Page 59

3.3.6 Assembly p rocedu re (see figure 27 and figure 28)

1. Attach VDI/VDE 3845 mounting console ((9), actuator--specific, scope of delivery actuator manufacturer) onto rear of positioner and secure using hexagon head screws (14) and lock washers (15).
2. Adhere pointer (4.2) onto mounting console in the center of the centering hole.
3. Push the coupling wheel (2) onto positioner axle, pull back by about 1 mm and tighten the hexagon socket head screw (18) with the Allen key provided.
4. Place the carrier (3) onto the end of the actuator and secure using Fillister head screw (16) and washer (17).
5. Carefully place positioner with mounting console onto the actuator such that the pin of the coupling wheel engages in the driver.
6. Align the positioner/mounting console assembly in the center of the actuator and screw tight. (Screws not included in delivery; they are part of the actuator mounting console!)
Preparing for operation
7. Following startup as described in Chapter 3.6, page 74: Drive the actuator to the end position and adhere scale (4.1) on the coupling wheel (2) according to direction of rotation and part--turn actuator.
The scale is self--adhesive!
SIPART PS2 PA Manual A5E00127926- -05
57
Page 60
Preparing for operation
9
1)
3
15
14
2
18
2)
16
17
3)
2
3
4)
Figure 27 Assembly procedure (part--turn actuator)
2
4.1
0%20 40 60 80 100%
5)
58
SIPART PS2 PA Manual
A5E00127926- -05
Page 61
Preparing for operation
15
14
9
1)
16
17
3
2)
18
2
3)
2
4.1
2
0%20 40 60 80 100%
3
4)
5)
Figure 28 Assembly procedure for explosion proof version (part--turn actuator)
SIPART PS2 PA Manual A5E00127926- -05
59
Page 62
Preparing for operation
CUT A -- B
4.2 14,15
Positioner
part--turn actuators
2 Clutch wheel 10 Feedback shaft 3 Driver 14 Hexagon--head screw M6×12 4 Multiple--purpose plate 15 Retaining washer S6
4.1 Scale 16 Round--head screw M6×12
4.2 Pointer mark 17 Washer 9 VDI/VDE 3845 mounting bracket 18 Socket--head cap screw
Figure 29 Mounted positioner for part--turn actuators
60
SIPART PS2 PA Manual
A5E00127926- -05
Page 63
fastening level positioner
Preparing for operation
4mm
M6
4
part- -turn actuator
4 35
F05--Lkr.-- 4 50
+0,1
25
4
12
6,5
Figure 30 Attachment of part--turn actuator, mounting console (scope of delivery actuator manufacturer),
dimensions
SIPART PS2 PA Manual A5E00127926- -05
61
Page 64
Preparing for operation

3.4 Electrical connection

.
!
NOTE
Any necessary options modules must be installed before electrical connection (see chapter 2.6, page 31).
N.B.: The transmission ratio selector can only be set when the positioner is open. Therefore check this setting before closing the positioner.
WARNING
The specifications of the examination certificate valid in your country must be observed.
Electrical connection in hazardous areas
Laws and regulations valid in your country must be observed for the electrical installation in explosions hazardous areas. In Germany these are for example:
-- Working reliability regulations,
-- Regulations for installing electrical equipment in hazardous areas, DIN EN 60079--14 (in the past VDE 0165, T1).
-- The certificate of conformity
If the intrinsically safe version is operated with a higher operating voltage by mistake, the positioner must no longer be used for intrinsically safe application.
The explosion proof positioner may only be supplied with electrical power in areas in which the atmosphere may be potentially explosive when the housing is closed.
The feed--though openings in the explosion proof version for the electronic connections must be sealed with EEX--d certified cable glands or EEx--d certified plugs or an ignition lock must be mounted at a maximum distance of 46 cm (18 inches) when using the ”conduit”--system.
The plastic housing is metal lined to increase the electromagnetic compatibility (EMC) against high frequency radiation. This screen is connected electrically to the threaded bushes shown in figure 31, page
63.
The specified noise immunity and noise emission are only ensured if the bus shield is fully effective.
This includes connecting the shields with the metallic connections of the positioner with PROFIBUS PA, but also routing the shield to the terminal boxes, distributors, DP/PA coupler or DP/PA link.
62
SIPART PS2 PA Manual
A5E00127926- -05
Page 65
Preparing for operation
CAUTION
!
To discharge impulses under fault conditions, the positioner must be connected via a low resistance to an equipotential bonding (ground potential). For this the positioner in plastic housing is provided with an additional cable. Connect this cable using the cable clip to the PROFIBUS cable shield and to the equipotential bonding.
Devices in metal housings have a corresponding terminal on the outside of the housing, which also must be connected to equipotential bonding.
Provide for suitable potential equibonding between the hazardous and non--hazardous areas for applications in areas where there is a risk of explosions.
Figure 31 Base plate
Fitting the bus cable
Normal, intrinsically safe and zone 2 versions.
1. Isolate the bus cable as shown in figure 32, page 64.
2. Open the positioner housing by undoing the four cover screws.
3. Insert the prepared bus cable through the cable gland.
4. Secure the shield with the cable clip and the two screws to the housing.
Shield
Explosion proof version
1. Isolate the bus cable as shown in figure 32, page 64.
2. To open the positioner, the cover catch (12) must be undone and the screw cover unscrewed.
3. Insert the prepared bus cable through the Ex--d--certified cable gland *)
4. Secure the shield with the cable clip and the two screws to the housing.
SIPART PS2 PA Manual A5E00127926- -05
63
Page 66
Preparing for operation
5. Tighten the cable gland. 5. Tighten the Ex--d--certified cable gland. *)
6. Connect the red and green wires as shown in figure 33, page 65 to terminals 3 and 7 of the motherboard (the polarity is immaterial).
for positioner in normal version and in explosion proof version
10
6. Connect the red and green wires as shown in figure 35, page 66 to terminals 6 and 7 of the motherboard (the polarity is immaterial).
*) if the Conduit Tube System is being used, refer to the
relevant instructions.
a
5
Buscable 6XV1 830--5AH10
or 6XV1 830--5BH10
a = 80 in normal version (without Ex and without Ex i) a = 120 in explosion proof version (Ex d)
Figure 32 Preparation of bus cable
For error--free communication the bus must be terminated at both ends with a bus terminator. At the end nearest the control system, this is already assured by the terminator contained within the coupling or link. At the far end of the bus this must be achieved by fitting an additional terminator.
So as to avoid potential differences between individual equipment parts and thus the risk of functional impairment, a suitable potential bonding is to be provided. Information regarding dimensions and types can be found in DIN VDE 0100 parts 410 and 540.
.
NOTE
Use standard M20 x 1.5 cable gland nuts to ensure leakage (IP- ­protection of the housing) and for the necessary tensile strength use only cables with a cable diameter 8 mm, or for smaller diameters use a suitable sealing insert.
For the NPT version, the positioner will be delivered with an adapter. Make sure that when fitting a part into the adapter, that the maximum permissible torque of 10 Nm is not exceeded.
Cable shield
64
NOTE for use in zone 2:
Non--sparking equipment for Zone 2 may not be connected or disconnected under power in normal operation.
However, during installation or repair work the positioner may be connected or disconnected even under power (see also certificate for zone 2).
SIPART PS2 PA Manual
A5E00127926- -05
Page 67
for positioner in normal version:
1 Bus cable 2 Cable clip 3BasicPCB 4 Module cover 5Plate 6 Terminal block 7 Ground potential 8 Cable glands
Preparing for operation
Figure 33 Bus cable connection
for positioner in explosion proof version
Base plate
Cable shield
Cable clip
Figure 34 Bus cable connection for positioner in explosion proof version
Bus cable
EEx d certified cable inlets
SIPART PS2 PA Manual A5E00127926- -05
65
Page 68
Preparing for operation
Non--hazardous area
Approved associated apparatus or barrier
+
30 V
--
EEx
PROFIBUS PA
EEx
DP/PA coupling
Figure 35 Electric connection of basic device with in intrinsically safe version
Non--hazardous area
24 V
+
--
30 V
Hazardous area zone 1
81
Input: Safe position
82
6 7 8
+
9
10
81 82
3V
Hazardous area
Input: Safe position
Positioner
Binary input 1
32 V
10
6 7 8
+
9
3V
PROFIBUS PA
DP/PA coupling
Figure 36 Electric connection for positioner in explosion proof version or in type of explosion protection ”n”
version
Safety position
The positioner is equipped with an additional input (terminal 81 [+] and
Positioner
Binary input 1
terminal 82 [--]) for driving to the safety position. After activating this function this input must be supplied with uninterrupt +24 V, to allow normal positioning operation.
If this power supply is switched off or drops out, the air exhaust valve is automatically opened and the drive will move to the pre- -arranged safety position, so that the drive cannot be activated using the keys on the control unit or by means of the master switch. The communication with the Master is still possible.
This function is activated by the coding bridge on the motherboard. This is accessible after removing the module cover and must be moved from the right position (as delivered) to the left position.
66
SIPART PS2 PA Manual
A5E00127926- -05
Page 69
Preparing for operation
3.4.1 Connection variant: options in positioner in non--intrinsically safe and explosion proof version
Current output
+
U
Figure 37 I
35 V
H
+
module 6DR4004--8J, non Ex
y--
Binary inputs and outputs
+13 V
+
30 V
+4.5 V
+
35 V
616261 62
Alarm module 6DR4004--8A
11 12
+
21 22
1K
31 32
E
J
Iy--module: 6DR4004--8J
3V
1
Fault message
Binary input 2
+
35 V
+
35 V
Figure 38 Alarm module 6DR4004--8A, non Ex
SIPART PS2 PA Manual A5E00127926- -05
41 42
51 52
1K
Limit A1
1K
Limit A2
67
Page 70
Preparing for operation
SIA module
SIA module: 6DR4004--8G
+
<35V
+
8.2 V
+
8.2 V
Figure 39 SIA module 6DR4004--8G, non Ex
31 32
41 42
51 52
Mechnical limit switch module
+
<35V
=
31 32
1K21
10K
Limit switch module 6DR4004-8K
1K21
10K
Fault message
Limit A1
Limit A2
Fault message
+
max. AC 250 V
DC 24 V
Figure 40 Mechanical limit switch module 6DR4004--8K, non Ex
AC/DC 4 A
+
max. AC 250 V
DC 24 V
AC/DC 4 A
41 42
51 52
Limit A1
Limit A2
68
SIPART PS2 PA Manual
A5E00127926- -05
Page 71
Preparing for operation

3.4.2 Connection variant: options in the positioner in intrinsically safe version

Current output
Non--hazardous area
EEx
U
J
U
H
30 V
+
Intrinsically safe power sources
Figure 41 I
module 6DR4004--6J, EEx i
y
Binary inputs and outputs
Hazardous area zone 1 or zone 2
+
616261 62
+
E
J
Iymodule: 6DR4004--6J
Hazardous area zone 1 or zone 2Non--hazardous area
Alarm module 6DR4004--6A
+
25.2 V
EEx
EEx
EEx
EEx
+
8.2 V
+
8.2 V
+
8.2 V
Intrinsically safe Switching amplifier to EN 50227
Figure 42 Alarm module 6DR4004--6A, EEx i
11 12
21 22
31 32
41 42
51 52
2K1
10K
2K1
10K
2K1
10K
1
Binary input 2
3V
+
Fault message
Limit A1
Limit A2
SIPART PS2 PA Manual A5E00127926- -05
69
Page 72
Preparing for operation
SIA module
Non--hazardous area
EEx
+
8.2 V
Intrinsically safe Switching amplifier to EN 50227
+
8.2 V
EEx
+
8.2 V
EEx
Figure 43 SIA module 6DR4004--8G, EEx i
Mechnical limit switch module
Hazardous area zone 1 or zone 2
SIA module: 6DR4004--6G
2K1
31 32
41 42
51 52
10K
2K1
10K
2K1
10K
Fault message
Limit A1
Limit A2
Non-hazardous area
Hazardous area zone 1 or zone 2
Intrinsically safe Switching ampli­fier to
Mechanical limit switch module 6DR4004-6K
EN 60947--5--6
+
EEx
max. DC 8.2 V
31 32
10K
+
41 42
= I
U
max
max
DC 30 V
100 mA
+
51 52
=
U
I
max
max
DC 30 V
100 mA
Figure 44 Mechnical limit switch module 6DR4004--6K, EEx i
2K1
Fault message
Limit A1
Limit A2
70
SIPART PS2 PA Manual
A5E00127926- -05
Page 73
Preparing for operation

3.4.3 Connection variant: options in the positioner in type of protection ”n” version

Current output
Non--hazardous area
+
U
H
30 V
Figure 45 I
module 6DR4004--6J, EEx n
y
Binary inputs and outputs
+
+
25,2 V
Hazardous area zone 2
+
616261 62
E
J
Iymodule 6DR4004--6J
Hazardous area zone 2Non--hazardous area
Alarm module 6DR4004--6A
11 12
1
BI2
+
8.2 V
+
8.2 V
+
8.2 V
Switching amplifier to EN60947--5--6
Figure 46 Alarm module 6DR4004--6A, EEx n
SIPART PS2 PA Manual A5E00127926- -05
21 22
31 32
41 42
51 52
10K
10K
10K
2K1
2K1
2K1
3V
+
Alarm
Limit A1
Limit A2
71
Page 74
Preparing for operation
SIA module
Non--hazardous area
+
8.2 V
+
8.2 V
+
Switching amplifier to EN60947--5--6
8.2 V
Figure 47 SIA module 6DR4004--6G, EEx n
Hazardous area zone 2
SIA module 6DR4004--6G
2K1
31
10K
32
41 42
51 52
Fault message
Limit A1
Limit A2
72
SIPART PS2 PA Manual
A5E00127926- -05
Page 75

3.5 Pneumatic connection

WARNING
!
For reasons of safety, the pneumatic power may only be supplied after assembly when the positioner is switched to operating mode P manual operation with electrical signal applied (as--delivered state, see figure 57, page 94).
Preparing for operation
.
NOTE
Note the air quality! Oil--free industrial air, solid content < 30 μm, pressure dew point 20 K below the lowest ambient temperature (chapter 7 ”Technical Data”, page 161).
S Connect a manometer block for supply air and actuating pressure if
necessary.
S Connection by female thread G 1/4 DIN 45141 or 1/4” NPT:
P
Z
Y1 actuating pressure 1 for single-- and double--acting
Y2 actuating pressure 2 for double--acting actuators E exhaust air outlet (remove silencer if necessary) see figure 10 and 11, page 27.
Supply air 1.4 to 7 bar
actuators
S Safety position when the electric power supply fails:
single--acting: Y1 deaerated double--acting: Y1 Max. actuating pressure
(supply air pressure)
Y2 deaerated
S Connect actuating pressure Y1 or Y2 (only in double--acting
actuators) according to the desired safety position.
.
SIPART PS2 PA Manual A5E00127926- -05
S Connect supply air to P
NOTE
In order for spring- -loaded pneumatic actuators to be able to reliably exploit the maximum possible actuating path, the supply pressure must be sufficiently greater than the maximum required final pressure of the actuator.
After installing the device, check the pneumatic connections of the entire assembly for leakage. Any leakage would cause not only continuous consumption of compressed air but also would cause the positioner to continually endeavor to compensate for the variance in position, leading in time to premature wear of the whole control mechanism.
.
Z
73
Page 76
Preparing for operation

3.6 Commissioning

Once the positioner has been fitted to a pneumatic actuator, it must be provided with electrical and pneumatic auxiliary power.
The electrical auxiliary power can be provided via a bus interface or separate power source with 15 to 30 V DC. Then you can then adapt the positioner to the respective actuator by parameterizing and initializing it and setting the bus address. Communication with a master is not necessary for this.
If the positioner has not been initialized it will be in the ”P Manual Mode” operating mode (which can also if necessary be attained by ”PRST”) -- ”NOINI” will flash.
This initialization can be effected in three different ways:
S Automatic initialization
Initialization takes place automatically. Hereby the positioner determines the direction of action, the stem path and the angle of rotation, the adjusting times of the actuator one after the other and adapts the control parameters to the dynamic behavior of the actuator.
.
S Manual initialization
The stem travel or angle of rotation of the actuator can be set manually, the other parameters are determined as in automatic initialization. This function is useful in actuators with soft limit stops.
S Copying initialization data (positioner exchange)
The initialization data of a positioner can be read out and copied to another positioner. This enables a defective device to be changed without having to interrupt an ongoing process by initialization.
Only a few parameters need to be set in the positioner prior to initialization. The others are defaulted so that they do not normally need to be adjusted. You will have no problems with commissioning if you observe the following points.
The possible operating modes and parameters, together with the adjustment capabilities and their effects are described in chapter 4 page 91 ”Operation”.
NOTE
N.B.: The operating pressure should be at least one bar greater than is necessary for closing/opening the valve during initialization. Jedoch darf der Betriebsdruck nicht größer sein als der maximal zulässige Be­triebsdruck des Antriebs.
74
N.B.: The transmission ratio selector can only be set when the positioner is open. Therefore check this setting before closing the housing.
SIPART PS2 PA Manual
A5E00127926- -05
Page 77

3.6.1 Preparations for linear actuators

1. Assemble the positioner with the appropriate mounting kit (see chapter 3.3.3, page 39).
Preparing for operation
.
NOTE
Particularly important is the position of the transmission ratio selector (7, figure 8, page 25) in the positioner:
Stroke Lever Position of the transmission ratio
selector
5to20mm short 33° (i.e. down) 25 to 35 mm short 90° (i.e. up) 40 to 130 mm long 90° (i.e. up)
2. Push the carrier pin (4, figure 26 (page 55) 2) onto the lever (6, figure 26, 2) to the scale position corresponding to the rated stroke or next highest position and screw the carrier pin tight with the nut (18, figure 26, 2).
3. Connect the actuator and the positioner with the pneumatic lines and supply pneumatic power to the positioner (figure 10 and 11, page 27 ).
4. Connect the positioner to the PROFIBUS line (figure 35, page 66 and figure 36, page 66).
5. The positioner is now in the operating mode ”P--manual operation” The current potentiometer voltage (P) is displayed in percent in the top line of the display, e.g.: ”P12.3”, and ”NOINI” flashes in the bottom line:
.
SIPART PS2 PA Manual A5E00127926- -05
6. Check the free running of the mechanics in the whole actuating range by moving the actuator with the keys to the respective end position.
NOTE
You can move the actuator quickly by pressing the other direction key additionally whilst keeping the direction key selected first pressed.
7. Now move the actuator to the horizontal position of the lever. A value between P48.0 and P52.0 should be visible in the display. If this is not the case, adjust the friction clutch (8, figure 16, page 33) until ”P50.0” is displayed with a horizontal lever . The more accurately you hit this value, the more exactly the positioner can determine the path.
and and driving
75
Page 78
Preparing for operation
NOTICE
for the explosion proof version:
Only adjust the outer friction clutch (8, Fig. 9, page 26). The internal friction clutch (9, Fig. 8 page 25) is fixed and, for the explosion proof version, must not be adjusted.

3.6.2 Automatic initialization of linear actuator

If you can move the actuator correctly, leave it standing in a central position and start automatic initialization:
.
1. Press the operation mode key you to the Configuration operating mode. Display:
2. Switch to the second parameter by pressing the operation mode
key Display:
NOTE
It is vital that this value corresponds to the setting of the transmission ratio selector (8, figure 8, page 25) (33° or 90°).
briefly.
for longer than 5 s. This brings
or
76
3. Switch on to the following display with the operation mode key :
You only need to set this parameter if you want to have the total stroke in mm displayed at the end of the initialization phase. To do this, select the same value in the display to which you have set the carrier pin to the scale on the lever.
SIPART PS2 PA Manual
A5E00127926- -05
Page 79
Preparing for operation
4. Switch on to the following display with the operation mode key :
5. Start initialization by pressing the key for longer than 5 s. Display:
During the initialization phase ”RUN1”to”RUN5” appear one after another in the bottom display (see also structograms figures 49, page 85 to figure 52, page 88).
.
NOTE
The initialization process may last up to 15 minutes depending on the actuator.
The initialization is complete when the following display appears:
The following display appears after pressing the operation mode key
briefly:
To e x i t t h e Configuration mode, press the operation mode key for longer than 5 s. The software version is displayed after about 5 s. The instrument is in manual operation after releasing the operation mode key.
.
SIPART PS2 PA Manual A5E00127926- -05
NOTE
You can abort an ongoing initialization at any time by pressing the operation mode key. Your previous settings are retained. All the parameters are reset to the factory setting only after performing a ”Preset”.
77
Page 80
Preparing for operation

3.6.3 Manual initialization of linear actuator

The positioner can be initialized with this function without the actuator being driven hard against the limit stop. The start and end positions of the stem path are set manually. The other initialization steps (optimization of the control parameters) run automatically as in automatic initialization.
Manual initializ-­tion procedure in linear actuator
.
1. Make preparations as described in chapter 3.6.1, page 75 for
linear actuator. In particular, make sure by manuallydriving the whole stem path that the displayed potentiometer setting moves in the permissible range between P5.0 and P95.0.
Press the operation mode key you to the Configuration mode. Display:
3. Switch to the second parameter by pressing the operation mode
key
NOTE
It is vital that this value corresponds to the setting of the transmission ratio selector (33_ or 90°).
briefly. One of the following displays appears:
for longer than 5 s. This brings
or
78
4. Switch on to the following display with the operation mode key:
You only need to set this parameter if you want to have the total stroke in mm displayed at the end of the initialization phase. To do this, select the same value in the display to which you have set the carrier pin to the scale on the lever or the next highest position in intermediate positions.
SIPART PS2 PA Manual
A5E00127926- -05
Page 81
Preparing for operation
5. Switch on to the following display by pressing the operation
mode key twice:
6. Start initialization by pressing the increment key for longer
than5s. Display:
7. After 5 s the display changes to:
.
(The display of the potentiometer setting is shown here and below as an example only). Now move the actuator to the position which you want to define as
the first of the two end positions with the increment
decrement accepts the current position as end position 1 and switches on to
the next position.
NOTE
If the message ”RANGE” appears in the bottom line, the selected end position is outside the permissible measuring range. There are several ways to correct the error:
S Adjust the friction clutch until ”OK” appears and press the operation
mode key again or
S move to another end position with the increment and decrement key
or
S abort initialization by pressing the operation mode key. You then have
to change to P manual operation and correct the stem path and the displacement detection according to step 1.
key. Then press the operation mode key .This
and
SIPART PS2 PA Manual A5E00127926- -05
79
Page 82
Preparing for operation
8. If step 7 was successful, the following display appears:
Now move the actuator to the position which you want to define as the second end position with the increment
decrement key. Then press the operation mode key .This enters the current position as end position 2.
and
.
NOTE
If the message ”RANGE” appears in the bottom line, the selected end position is outside the permissible measuring range. There are several ways to correct the error:
S move to another end position with the increment and decrement key
or
S abort initialization by pressing the operation mode key. You then have
to change to P manual operation and correct the displacement path and the displacement detection according to step 1.
If the message ”Set Middl” appears, the lever arm must be driven to horizontal position using the increment and decrement key and then the operation mode key pressed. This sets the reference point of the sine correction in linear actuators.
9. The rest of the initialization now runs automatically. ”RUN1” to
”RUN5” appear one after another in the bottom line of the display. The following display appears on successful completion of initialization:
80
The first line additionally contains the determined stroke in millimeters if the set lever length was specified with parameter 3 YWAY.
5 INITM appears in the bottom line again after pressing the operation mode key operating mode.
To exit the Configuration mode, press the operation mode key longer than 5 seconds. The software version is displayed after about
5 seconds. The instrument is in manual operation after releasing the operation mode key.
briefly. This brings you back to the Configuration
SIPART PS2 PA Manual
A5E00127926- -05
for
Page 83
3.6.4 Preparations for part--turn actuator
Preparing for operation
.
NOTE
Very important: Switch the transmission ratio selector in the
positioner (8, figure 8, page 25) to position 90° (normal angle for part--turn actuator).
1. Mount the positioner with the appropriate mounting kit (see chapter
3.3.5, page 56).
2. Connect the actuator and the positioner with the pneumatic lines and supply pneumatic power to the positioner (figure 10 and 11, page 27).
3. Connect the positioner to the PROFIBUS line (Figure 35, page 66 and Figure 36, page 66).
4. The positioner is now in the operating mode ”P-manual operation” The current potentiometer voltage (P) is displayed in % in the top line of the display, e.g.: ”P12.3”, and ”NOINI” flashes in the bottom line:
5. Check the free running of the mechanics in the whole actuating range by moving the actuator with the keys to the respective end position.
and and driving
.
NOTE
You can move the actuator quickly by pressing the other direction key additionally whilst keeping the direction key selected first pressed.
3.6.5 Automatic initialization of part--turn actu ator
If you can move the actuator correctly through the actuating range, leave it standing in a central position and start automatic initialization:
1. Press the operation mode key brings you to the Configuration mode. Display
for longer than 5 seconds. This
SIPART PS2 PA Manual A5E00127926- -05
81
Page 84
Preparing for operation
2. Set the parameter with the key to ”turn” Display:
3. Switch to the second parameter by pressing the operation mode key Display:
4. Switch on to the following display with the operation mode key :
briefly. This has set automatically to 90°.
.
5. Start initialization by pressing the key for longer than 5 seconds. Display:
During the initialization phase ”RUN1”to”RUN5” appear one after another in the bottom display (see also structograms in figure 49, page 85 to figure 52, page 88).
NOTE
The initialization process may last up to 15 minutes depending on the actuator.
The initialization is complete when the following display appears:
82
The top value indicates the total angle of rotation of the actuator (example 93.5°).
SIPART PS2 PA Manual
A5E00127926- -05
Page 85
Preparing for operation
The following display appears after pressing the operation mode key
briefly:
To e x i t t h e Configuration mode, press the operation mode key for longer than 5 seconds. The software version is displayed after about 5 seconds. The instrument is in manual operation after releasing the operation mode key.
.
NOTE
You can abort an ongoing initialization at any time by pressing the operation mode key. Your previous settings are retained. All the parameters are set to the factory setting only after performing a ”Preset”.
3.6.6 Manual initialization of part--turn actuators
The positioner can be initialized with this function without the actuator being driven hard against the limit stop. The start and end positions of the displacement path are set manually. The other initialization steps (optimization of the control parameters) run automatically as in automatic initialization.
Manual initializa-­tion procedure in part--turn actuators
1. Make preparations as described in chapter 3.6.4, page 81 for
part--turn actuators. In particular, make sure by manually driving the whole displacement path that the displayed potentiometer setting moves in the permissible range between P5.0 and P95.0.
SIPART PS2 PA Manual A5E00127926- -05
2. Press the operation mode key
brings you to the Configuration mode. Display:
3. Set the parameter YFCT to ”turn” with the decrement key.
Display:
for longer than 5 seconds. This
83
Page 86
Preparing for operation
4. Switch to the second parameter by pressing the operation mode
key Display:
briefly.
.
NOTE
Make sure that the transmission ratio selector is in position 90 °!
5. Switch on to the following display by pressing the operation mode
key
The following steps are identical with the steps 6) to 9) for initialization of linear actuators.
After successful initialization the determined part--turn range appears in the top display.
”5.INITM” appears in the bottom line again after pressing the operation mode key Configuration operating mode.
To exit the Configuration mode, press the operation mode key for longer than 5 seconds. The software version is displayed after
about 5 seconds. The instrument is in manual operation after releasing the operation mode key.
twice:
briefly. This brings you back to the
84
SIPART PS2 PA Manual
A5E00127926- -05
Page 87

3.6.7 Automatic initialization (structograms)

Preparing for operation
Linear actuator
Up Down
Figure 48 Direction of action of the actuators
The initialization procedure should be taken from the following structogram (figure 49 to figure 52). The terms Open/Closed and up/down in the structogram refer to the direction of action of the actuators as illustrated in figure 48.
configure
start: press
>5s
1
Part--turn actuator
Closed
Open
move the actuator
into the travel range
with:
piezo valve 1 opens
RUN 1
dy > 4 % ?
yes
no
piezo valve 2 opens
dy > 4 % ?
yes
Figure 49 Automatic initialization, part 1
continue with:
no
t>60s?
yes
no
2
t>60s?
no
yes
manual intervention
SIPART PS2 PA Manual A5E00127926- -05
85
Page 88
Preparing for operation
2
actuator
tolerance band
4% < dw < 10%
RUN 2
actuator moves
up--dw > 25 % ?
moves
into closed
position
?
yes
into open
position
hard stop
up < 97 % ?
yes
span
no
no
no
continue with:
turn friction clutch
until 0 appears
in the bottom line
of the display
continue with:
check
mechanics
1
yes
3
continue with:
Figure 50 Automatic initialization part 2 (in part--turn actuators)
86
manual intervention
SIPART PS2 PA Manual
A5E00127926- -05
Page 89
Preparing for operation
2
set lever vertical to stem with:arm
continue with:
actuator
tolerance band
RUN 2
actuator moves
moves
into closed
position
4% < dw
?
yes
into open
position
hard stop
up < 97 % ?
yes
no
no
continue with:
continue with:
correct height adjustment or
turn friction clutch
until 0 appears
in the bottom line
of the display
set the next lowest travel value on the lever and check the setting of the transmission ratio selector
no
yes
has friction
clutch
been
moved?
continue with:
1
span
up--dw > 25 % ?
yes
was the
vertical position
(to stem) of the lever
driven through
?
yes
3
no
continue with:
no
Figure 51 Automatic initialization part 2 (in linear actuators)
SIPART PS2 PA Manual A5E00127926- -05
set the next highest travel value on the lever and check the setting of the transmission ratio selector
manual intervention
1
87
Page 90
Preparing for operation
3
determine travel times
display travel times
flashes
alternating
RUN 3RUN 4RUN 5
yes
within
5s?
no
yes
within
5s?
no
determine minimum
positioning increments
if leakage test of actuator is desired
if setting of travel times is desired
flashes
alternating
actuator comes to standstill
after
1 minute
continue with:
continue with:
or
set restrictor(s) to change the travel
times
display of travel times in s
display of leakage in % / min
optimizing of transient behavior and
determining of prediction horizon
or
continue with:
configure
Figure 52 Automatic initialization, part 3
88
display of stroke in mm or angle of rotation in degrees, is also the identification for complete initialization
manual intervention
SIPART PS2 PA Manual
A5E00127926- -05
Page 91
Preparing for operation

3.7 Copying initialization data (positioner exchange)

With this function you have the possibility of starting up a positioner without running the initialization routine. This allows for example a positioner to be changed on a running system in which automatic or manual initialization cannot be performed without disturbing the process.
NOTICE
Initialization (automatic or manual) should be performed as soon as possible afterwards because only then can the positioner be optimally adapted to the mechanical and dynamic properties of the actuator.
Data are transmitted from the positioner to be replaced to the replacement instrument via the HART®--communication interface.
The following steps must be performed to exchange a positioner:
1. Read in and save instrument parameters and initialization data (determined in initialization) of the instrument to be replaced with PDM (Process Device Manager) or HART®--Communicator. This step is unnecessary if the instrument has been parameterized with PDM and the data have already been stored.
2. Fix the actuator in its momentary position (mechanical or pneumatic).
3. Read and note the current position actual value of the positioner to be changed. If the electronics are defective, determine the current position by measuring on the actuator or valve.
4. Disassemble the positioner. Mount the lever arm of the positioner on the replacement instrument. Mount the replacement instrument on the fitting. Move the transmission ratio selector to the same position as the defective instrument. Copy the instrument data and initialization data from the PDM or handheld.
5. If the displayed actual value does not match the noted value of the defective positioner, set the correct value with the friction clutch.
6. The positioner is now ready to operate.
The accuracy and dynamic behavior may be restricted in relation to correct initialization. The position of the hard stops and the related maintenance data may show deviations in particular. Therefore initialization must be performed at the earliest opportunity.
SIPART PS2 PA Manual A5E00127926- -05
89
Page 92
Preparing for operation
90
SIPART PS2 PA Manual
A5E00127926- -05
Page 93
Operation

Operation

4.1 Display

.
4
The following chapter describes the operation of the positioner.
The LC display has two lines whereby the lines have different segmentation. The elements of the top line consist of 7, those of the bottom line of 14 segments. The display depends on the selected operating mode (see chapter 4.3, page 94)
NOTE
If the positioner is operated in ranges with temperatures below --10 °C the liquid crystal display becomes sluggish and the display refresh rate is reduced considerably.

4.2 Input keys

.
Figure 54 shows you the various display options.
The meaning of further display capabilities is detailed in chapter 4.6 page 122.
The positioner is operated by three keys (figure 55, page 93) the function of which depends on the selected operating mode. In the explosion proof version of the positioner the input keys are underneath a key cover which can be lifted up after loosening the cover screw.
NOTE
The input keys of the explosion proof version must be covered to prevent liquid getting in. The IP66/NEMA4x degree of protection is not guaranteed when the housing is open or the key cover is open.
The housing cover must be removed to operate the keys in the normal and intrinsically safe versions of the positioners.
SIPART PS2 PA Manual A5E00127926- -05
91
Page 94
Operation
Figure 54 Meaning of the various display options
92
SIPART PS2 PA Manual
A5E00127926- -05
Page 95
1
23 4
1 Display 2 Operation mode key 3 Decrement key 4 Increment key
Figure 55 Display and input keys of the positioner
Explanations of the input keys
S The operation mode key (manual key) serves to switch over the
operating mode and pass on parameters.
Operation
.
Firmware version
NOTE
By pressing and holding the operation mode key and additionally pressing the decrement key , you can select the parameters in reverse order.
S The decrement key serves to select parameter values in
configuration and to move the actuator in manual operation.
S The increment key serves to select parameter values in
configuration and to move the actuator in manual operation.
The current firmware state is displayed when you exit the configuration menu.
Figure 56 Firmware version
SIPART PS2 PA Manual A5E00127926- -05
93
Page 96
Operation

4.3 Operating modes

The positioner can be operated in five operating modes.
1. P--manual mode (ex--factory state)
2. Configuration and initialization
3. Manual mode (MAN)
4. Automatic (AUT)
5. Diagnostic display
Figure 57 gives you an overview of the possible operating modes and the change between them.
Figure 57 Change between the operating modes
94
SIPART PS2 PA Manual
A5E00127926- -05
Page 97
Operation
P--manual mode (ex--factory state)
Configuration and initialization
.
The display of the positioner shows you the current potentiometer setting in the top line and ”NOINI” flashes in the second line. You can
move the actuator with the decrement and increment key . In order to adapt the positioner to your actuator, you have to change to the
Configuration menu. See also chapter 3.6, page 74 ”Commissioning”.
Manual and automatic mode or output of alarms and position feedback are possible after successful initialization.
To go to the Configuration menu, press the operation mode key at least 5 seconds. In the Configuration menu you can adapt the
positioner individually to your actuator and start initialization. Only a few parameters need to be set in the positioner prior to initialization. The others are defaulted so that they do not normally need to be adjusted. You can block the Configuration menu against manipulation by an appropriately parameterized and activated binary input. Which parameters you need to set and all other parameters are explained in chapter 4.4, page 97 Parameterization.
The configuration mode can be reported by outputting a parameterizable fault message, a position feedback or output of limit values A1 and A2 is not possible in configuration mode.
NOTE
If the electric power supply fails during configuration, the positioner switches back to the first parameter after recovering the power supply, values which have already been parameterized are retained. When doing this, please note that the new value will only be saved when leaving the configuration menu or when another parameter is selected.
for
Without a power failure you re-enter the configuration menu at the point you exited it when you call the Configuration menu again.
SIPART PS2 PA Manual A5E00127926- -05
95
Page 98
Operation
to
Figure 58 Overview: Configuration
Manual mode (MAN)
.
In this operating mode you can move the actuator with the decrement
) and increment keys ( ) and the current position is held
( regardless of the setpoint current and any leakages.
NOTE
You can move the actuator quickly by pressing the other direction key additionally whilst keeping the direction key selected first pressed.
at the same time
at the same time
at the same time
at the same time
.
Automatic (AUT)
Diagnostic display
The manual mode can be reported by outputting a parameterizable fault message, a position feedback or output of limit values A1 and A2 is only possible in automatic mode.
NOTE
The positioner switches over to automatic mode automatically after an electrical power failure.
The automatic mode is the normal mode. In this mode the positioner compares the setpoint current with the current position and moves the actuator until the control deviation reaches the parameterizable dead zone. Error messages are output if this is not possible for various reasons.
In this operating mode you can have the current operating data (such as number of strokes, number of changes in direction, number of faults messages, etc.) displayed (see table 1, page 114).
From the automatic or manual mode you go to the diagnostic display by simultaneously pressing all three keys for at least two seconds.
See chapter 4.5, page 113 for further information.
96
SIPART PS2 PA Manual
A5E00127926- -05
Page 99
Operation
.

4.4 Parameters

NOTE
The respective operating mode (MAN or AUT) of the positioner is retained when you switch to the diagnostic display, i.e. in automatic operation the specified setpoint is still used for controlling and in manual operation the position last reached is retained.
All the parameters of the positioner are listed in this chapter. Figure 59 shows an overview of the parameters.
The parameter name is shown once in plain text and once as it appears in the display. The function of the parameter is described briefly in the ”Function” column. In addition, the possible parameter values, the physical unit and the factory setting of the parameters are shown.
The configuration block diagram (figures 60 page 99) shows the effects of the parameters.
SIPART PS2 PA Manual A5E00127926- -05
97
Page 100
Operation
SIPART PS2 PA configurations (PROFIBUS version)
Parameter­name
1. YFCT Type of actuator:
2. YAGL
3. YWAY
4. INITA Initialization (automatic
5. INITM Initialization (manual
6. SDIR Setpoint direction rising
7. TSI Setpoint ramp OPEN Auto
8. TSD Setpoint ramp CLOSED 0 to 400 s
9. SFCT Setpoint function
10. SL0
30. SL20
31. DEBA Controller dead zone Auto
32. YA Start of manipulated variable
33. YE End of manipulated variable
34. YNRM Manipulated variable scaling
35. YCLS "Tight shut-off" with man. var.
36. YCDO
37. YCUP Value for "tight shut-off", up 0.0 to 100.0 %
38. BIN1 4)Function of binary input 1
Function Parameter values Dimen-
part-turn/linear
- Part-turn actuator
- Linear actuator
- Linear actuator without sine-wave correction
- Part-turn actuator with NCS
- Part-turn actuator with NCS, reverse direction
- Linear actuator with NCS
1)
Rated angle of feedback 90 °
2)
Travel range 5 to 130 mm (0.20 to 5.12 inch)
-None
- Short lever 33°
- Short lever 90°
- Long lever 90°
turn
WAY
LWAY
ncST
-ncST ncSL
33 °
OFF
5/10/15/20
25/30/35
40/50/60/70/90/
110/130
no
commissioning)
###.#
Strt
FINISH
no
commissioning)
###.#
Strt
FINISH
riSE
Setpoint direction falling
FAL L
0 to 400 s
-Linear
- Equal percentage
- Equal percentage, reversed
- Freely adjustable
3)
Setpoint interpolation points
.
with free characteristic
.
0 %, 5 %, 10 % ... 100 %
Lin
1-25, 1-33, 1-50
n1-25, n1-33,
n1-50
FrEE
0.0 to 100.0 %
0.1 to 10.0 %
0.0 to 100.0 %
limit
limit
mech. travel/flow
-None
- Only up
- Only down
- Up and down
Value for "tight shut-off", down
None
0.0 to 100.0 %
MPOS FLOW
no
uP:
do
uP do
0.0 to 100.0 %
OFF
NO Only signal Block configuring Block config. and manual Drive valve to ye Drive valve to ya Block movement
NC Only signal Drive valve to ye Drive valve to ya Block movement
Figure 59 Parameter table of the positioner
on bLoc1 bLoc2
uP
doWn
StoP
-on
-uP
-doWn
-StoP
sion
De­grees
mm
Parameter­name
39. BIN2
Function Parameter values Dimen-
4)
Function of binary input 2 None NO
Only signal Drive valve to ye Drive valve to ya Block movement
OFF
on uP
doWn
StoP
sion
NC Only signal Drive valve to ye Drive valve to ya Block movement
40. AFCT5)Alarm function
41. A1
42. A2
43. FCT
44. TIM Monitoring time for setting of
None min : max: normal
min : min: normal
max : max: normal
inverted
inverted
inverted Response threshold for alarm 1 Response threshold for alarm 2
5)
Function of alarm output Fault:
normal inverted
Fault + not Automatic:
normal inverted
Fault + not Automatic + BI:
normal
inverted (+ means logical OR operation)
fault signal "Control devia-
-on
-uP
-doWn
-StoP
oFF Mi:MA Mi:MA
Mi:Mi
Mi:Mi MA:MA MA:MA
0.0 to 100.0 %
0.0 to 100.0 %
-
nA
- nA
nAb
- nAb
Auto
0 to 100
s
tion"
45. LIM Response threshold of fault signal "Control deviation"
Auto
0.0 to 100.0 %
46. STRK Limit for travel integral 0 to 1.00E9
47. DCHG Limit for change in direction OFF
1 to 1.00E9
48. ZERO Limit for zero limit monitoring OFF
%
%
49. OPEN Limit for open limit monitor-
50. DEBA Limit for dead zone monitor-
ing
ing
0.0 to 100.0 OFF
0.0 to 100.0 % OFF
0.0 to 10.0
51. PRST Preset (factory setting) no Strt
oCAY
52. FSTY Safety setting:
53. FSTI Monitoring time for setting of
Parameterized safety
setpoint Last setpoint Open exhaust air valve
FSVL FSSP
FSAC
0 to 100 s
safety position
54. FSVL Safety setpoint 0 to 100.0 %
55. STNR Station number 0 to 126
56. IDENT Device mode (Ident No.)
1
) Parameter only visible with "turn" or "WAY"; if "turn" is selected,
33 ° cannot be set.
2
) Parameter not visible if 1. YFCT = "turn", "LWAY" or "-ncST"
has been selected.
3
) Interpolation points only appear if 9.SFCT=FrEE has been selected.
4
) NC means: action with opened switch or Low level.
NO means: action with closed switch or High level.
5
) Normal means: High level without fault.
- Multi-vendor
- Full functionality
0 1
Inverted means: Low level without fault.
98
SIPART PS2 PA Manual
A5E00127926- -05
Loading...