Festo DFPD-10 Manual

Festo Måling DFPD-10

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DFPD-...

Semi-rotary drive

Festo SE & Co. KG

Ruiter Straße 82

73734 Esslingen

Germany

+49 711 347-0

www.festo.com

Operating instruction

8202412

2023-11f

[8202414]

8202412

Translation of the original instructions

1 About this document

1.1 Purpose of the document

This document describes the use of the above-mentioned product. It contains

additional information for the use of the product in safety-related systems (safety

manual in accordance with IEC61508).

1.2 Applicable documents

All available documents for the product

èwww.festo.com/sp.

1.3 Target group

This document is targeted towards individuals who mount and operate the

product. It is additionally targeted towards individuals who are entrusted with

the planning and application of the product in a safety-oriented system.

1.4 Product version

This document refers to the standard version of the quarter turn actuator DFPD of

the following product versions.

–DFPD-10…-2300: product labelling without revision number

–DFPD-10…-300: product labelling with revision number [Rev.01]

This document does not apply to the variants DFPD-…-T4 and DFPD-…-T6 with

extended temperature range.

1.5 Specified standards

Version

IEC 61508-1:2010 IEC 61508-7:2010

IEC 61508-2:2010 IEC 61511:2016

IEC 61508-4:2010

Tab. 1: Specified standards

2 Safety

2.1 General safety instructions

–Only use the product in its original condition without unauthorised modifica-

tions.

–Only use the product if it is in perfect technical condition.

–Observe the identifications on the product.

–Before working on the product, switch off the compressed air supply and lock it

to prevent it from being switched on again.

–Take into account the ambient conditions at the location of use. Corrosive

environments reduce the service life of the product.

–Protect the product from fluctuations in pressure: use a pressure control valve.

Return to Festo

Hazardous substances can endanger the health and safety of persons and cause

damage to the environment. To prevent hazards, the product should only be

returned if explicitly requested by Festo.

–Consult your regional Festo contact.

–Complete the declaration of contamination and attach it to the outside of the

packaging.

–Comply with all legal requirements for the handling of hazardous substances

and the transport of dangerous goods.

2.2 Intended use

The quarter-turn actuator operates process valves in fluid systems, (e.g. ball

valves or butterfly valves).

NOTICE

The operating torque of the actuator must not be greater than the maximum

permissible torque specified in ISO5211 in relation to the size of the mounting

flange and coupling.

NOTICE

Depending on the design, part-turn actuators that are moved to a defined

switching position by spring force in a de-energised state lose at least 30% of

their calculated torque as a result of the relaxation of the spring assemblies and

friction.

• Take an appropriate safety factor into account in the application.

2.3 Training of qualified personnel

Work on the product may only be carried out by qualified personnel who can

evaluate the work and detect dangers. The qualified personnel have knowledge

and experience in process automation.

3 Additional information

–Contact the regional Festo contact if you have technical problems

èwww.festo.com.

–Accessories and spare parts èwww.festo.com/catalogue.

4 Information on functional safety

4.1 Achievable safety classification

The product is suitable for use as an element in a safety-related system in accord-

ance with IEC61511.

–In Low Demand Mode up to SIL2

–In High Demand Mode up to SIL1

Taking into account the required minimum hardware fault tolerance (HFT=1), the

product can also be used up to SIL3 in a redundant configuration of the entire

system.

NOTICE

The suitability for certain applications can only be determined in connection with

the assessment of further components of the subsystem. These must achieve the

same safety level.

4.2 Safety function

Double-acting semi-rotary drives DFPD-...-RD/-LD

The safety function is to switch the actuator to the defined safety switching

position. This switching movement is achieved by pressurising the corresponding

pressure chamber with compressed air. The value of the torque generated

depends on the pressure difference between the two pressure chambers sepa-

rated by the piston.

Single-acting semi-rotary drives DFPD-...-RS/-LS

The safety function is to switch the actuator to the defined safety switching

position when the compressed air is switched off and the spring chamber is

exhausted. This switching movement is achieved through the spring force of the

spring assembly.

4.3 Operating conditions

–General information on safe operation

è2Safety.

–Periodic tests (function test) è11Maintenance, è11.1 General.

–Ambient conditions and other technical specifications è15Technical data.

4.4 Limitations of use

If used in a safety-related system, the service life is limited to 8years subject to

compliance with the operating conditions.

–Recommended interval for a complete function test: 1year

–Maximum permissible interval for a complete function test: 3years

When a function test is negative, maintenance work must be carried out immedi-

ately.

5 Product overview

5.1 Product structure

Fig. 1: Product structure (taking DFPD-2300 as an example)

Mounting thread for limit switch

or position sensor in accordance

with VDI/VDE 3845-1

Transmission shaft

Mounting thread for NAMUR

interface

Mounting thread for coding pin

Thread for transport lugs

(DFPD-2300 only)

Supply port 4 when the NAMUR

interface is used

End-position adjustment on both

sides

Mounting thread for process

valve in accordance with

ISO 5211

Coupling for process valve in

accordance with ISO 5211

Centering ring for mounting on

adapter bridge, DFPD-...-C only

Leakage slot

Supply port 2 when the VDE2

interface is used

Supply port 4, when the VDE2

interface is used

Mounting thread for

adapter in accordance with

VDI 3847-2 , DFPD-...-VDE2 only

Supply port 2 when the NAMUR

interface is used

A shaft projects outward through the housing on both sides. It transmits the

reaction torque to a process valve and, if applicable, a limit switch or position

sensor. The end stops can be adjusted in the range of 5° thanks to end-position

adjustment on both sides.

5.2 Function

The piston movement of the quarter-turn actuator is converted into a swivel move-

ment of the transmission shaft by Rack & Pinion kinematics (gear rack/pinion).

The swivel angle is 90° to a maximum of 180°, depending on the product version.

DFPD-... -RD -LD -RS -LS

Mode of operation Double-acting,

closes to the right

Double-acting,

closes to the left

Single-acting

(spring return),

closes to the right

Single-acting

(spring return),

closes to the left

Symbol on product

label

Tab. 2: Product version and mode of operation

Double-acting quarter-turn actuator: DFPD-...-RD/-LD

Fig. 2: Symbol for double-acting quarter-turn actuator

The switching movement is achieved by pressurising the corresponding pressure

chamber with compressed air. The value of the torque generated depends on the

pressure difference between the two pressure chambers separated by the piston.

Single-acting quarter-turn actuator: DFPD-...-RS/-LS

Fig. 3: Symbol for single-acting quarter-turn actuator

The switching movement is achieved through the spring force of the spring

assembly.

6 Transport

WARNING

Danger of crushing. Danger of shearing.

Body parts can be crushed or severed if the product falls.

• Use appropriate load handling equipment.

• For DFPD-2300: screw suitable transport lugs into the specified threaded holes.

Lift the drive by the transport lugs.

When dispatching used products, comply with all legal requirements for the han-

dling of hazardous substances and the transport of dangerous goods

è2Safety.

7 Storage

–Remove all attachments.

–Store the product in a cool, dry environment protected from UV and corrosion.

Keep storage times short.

–Note the ambient and storage conditions.

–When storing for a long period, test that the product is working at regular

intervals.

–Seal the pneumatic ports.

–Protect the coupling parts with grease or protective oil.

–Store the product on a level wooden pallet to prevent damage to the coupling

flange.

8 Assembly

8.1 Assembly without adapter bridge

Fig. 4: Assembly without adapter

bridge

Quarter-turn actuator

Process valve

1. Prepare the process valve.

Adjust the control shaft of the process valve to implement the desired oper-

ating method for opening and closing.

2. Place the quarter-turn actuator on the control shaft of the process valve.

ÄThe control shaft must sit in the coupling of the quarter-turn actuator

without tilting è5.1 Product structure.

3. Mount the quarter-turn actuator on the connecting flange of the process valve

using 4 corrosion-resistant screws and retaining rings.

4. Tighten the screws crosswise to the tightening torque. Note the flange type of

the quarter-turn actuator.

DFPD-... -F03 -F04 -F05 -F07

Tightening torque for the

screws

[Nm] 5.5±0.5 5.5±0.5 9.5±0.5 23±1

Tab. 3: Tightening torques for the flange, DFPD-...-F03…-F07

Produkt Specifikationer

Mærke:	Festo
Kategori:	Måling
Model:	DFPD-10

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