Festo SFAW Series Manual de usuario

en Operating

instructions

8049884

1602a

[8049886]

Flow sensor

SFAW

2Festo – SFAW – 1602a

Translation of the original instructions

SFAW

Installation and commissioning must be carried out only by properly qualified personnel in accordance

with these operating instructions.

Identification of hazards and instructions on how to prevent them:

Warning

Hazards that can cause death or serious injuries.

Note

Dangers that can result in material damage or failure of function.

Other symbols:

Recommendations or references to additional sources of information.

SFAW

Festo – SFAW – 1602a English 3

English – Flow sensor SFAW

Table of contents

1 Product description 5.......................................................

1.1 Overview 5................................................................

1.2 Key features 6.............................................................

2 Function and application 7...................................................

2.1 Operating statuses 8........................................................

2.2 Switching outputs 9.........................................................

2.2.1 Switching functions 9...............................................

2.2.2 Colour change 9...................................................

2.2.3 Volume pulse 10....................................................

2.3 Analogue output 10..........................................................

2.4 Filter 11...................................................................

2.5 Security code 11............................................................

2.6 Minimum/maximum value 11..................................................

3 Requirements for product use 12...............................................

4 Installation 13..............................................................

4.1 Inlet and outlet situation 13...................................................

4.2 Mechanical installation 14.....................................................

4.3 Fluid connection 15..........................................................

4.4 Electrical installation 15.......................................................

5 Commissioning 17...........................................................

5.1 Symbols on the display 17.....................................................

5.2 Switch on sensor (RUN mode) 20...............................................

5.3 Displaying parameters (SHOW mode) 21.........................................

5.3.1 Start SHOW mode 22................................................

5.3.2 Display minimum/maximum value and reset 22...........................

5.3.3 Display average and reverse related filter time constant 22..................

5.4 Configure sensor (EDIT mode) 23...............................................

5.4.1 Enter the security code 25............................................

5.4.2 Setting the switching characteristics of the switching outputs 25.............

5.4.3 Setting display units and analogue output 26.............................

SFAW

4Festo – SFAW – 1602a English

5.4.4 Changing sensor settings 27...........................................

5.4.5 Replicating parameters 27............................................

5.5 Teach switching points (TEACH mode) 28.........................................

5.6 Measuring volume manually (RECORDER mode) 28.................................

6 Operation 29...............................................................

7 Maintenance and care 29.....................................................

8 Disassembly 29.............................................................

9 Fault clearance 30...........................................................

10 Accessories 31..............................................................

11 Technical data 32............................................................

12 Hole patterns and dimensional drawings 35......................................

SFAW

Festo – SFAW – 1602a English 5

1 Product description

You can find detailed specifications for the product, the device description file (IODD)

with a description of the IO-Link parameters and the declaration of conformity at:

èwww.festo.com/sp www.festo.com.

The operating instructions describe the entire function range. The function range is lim

ited, depending on the product variant.

1.1 Overview

1Display, rotatable

2B key

3Edit button

4A key

5Electrical connection

6Fluid connection 1 (input), rotatable

7Fluid connection 2 (output), rotatable

Fig. 1 Control sections and connections

SFAW

6Festo – SFAW – 1602a English

1.2 Key features

Feature Value Description

Type SFAW Flow sensor for liquid media

Flow measuring range 32 Max. 32 l/min.

100 Max. 100 l/min.

Further measured variable Without temperature measurement

T Temperature

Connection type, input CClamped terminal connection

SFemale hose connector

TFemale thread

XUser connection (è4.3 Fluid connection)

Connection standard, input Without specification

S5 Clamped terminal connection in accordance with

DIN 32676:2009-05

Connection size, input G12 … G1 Thread G ½, G ¾, G 1

R12 … R1 Thread R ½, R ¾, R 1

N12 … N1 Thread NPT ½, NPT ¾, NPT 1

13, 19 Female hose connector 13 mm, 19 mm

15, 20 Clamped terminal connection DN 15, DN 20

Connection type, output CClamped terminal connection

SFemale hose connector

TFemale thread

EAs for input

XUser-provided connection (è4.3 Fluid connection)

Connection standard,

output

No specification

S5 Clamped terminal connection in accordance with

DIN 32676:2009-05

Connection size, output G12 … G1 Thread G ½, G ¾, G 1

R12…, R1 Thread R ½, R ¾, R 1

N12 … N1 Thread NPT ½, NPT ¾, NPT 1

13, 19 Female hose connector 13 mm, 19 mm

15, 20 Clamped terminal connection DN 15, DN 20

Type of mounting without mounting accessories

WWall mounting

Electrical output 1 PNLK PNP or NPN or IO-Link

Electrical output 2 PN PNP or NPN

PNVBA PNP or NPN or 0…10 V or 1…5 V or 4…20 mA

Electrical output 3 VBA 0…10 V or 1…5 V or 4…20 mA

Electrical connection M12 Plug connector M12, A-coded

Electrical accessories +2.5 S Straight socket, 2.5 m cable

+5 S Straight socket, 5 m cable

Protective devices GSafety guard

Tab. 1 Overview of variants

SFAW

Festo – SFAW – 1602a English 7

2 Function and application

The SFAW is intended for use in monitoring the flow, volume and temperature of liquid media in piping

or terminal devices in industry. The flow velocity is recorded in accordance with the vortex principle. The

flow rate and the accumulated volume are calculated from the flow velocity. An optional, integrated

temperature sensor records the medium temperature.

Interfacing to the higher-level systems is provided by 2 switching outputs, an analogue output and/or

an IO-Link interface, depending on the type. The outputs can be configured as appropriate to the ap

plication.

The switching outputs can be configured to monitor a threshold value or a range. For each output, PNP

or NPN and normally open (NO) or normally closed (NC) can optionally be set. Via the IO-Link interface,

process values can be read out and parameters changed and transmitted to additional devices.

Flow rate

Temperature

InA

analogue Q

InB

analogue T

InC

Volume pulse VP

InD

Volume recorder V

OutA

binary Q/BDC1

OutC

binary VP/BDC3

OutB

binary T/BDC2

OutD

binary Q/BDC4

Pin 4

Q or VP

Pin 2

T or Q

InA

analogue Q/PDV1_2byte

InB

analogue T/PDV2_2byte

InD

analogue V/onReq_4byte

Fig. 2 SFAW-…PNLK-PNVBA-…: Signal structure

SFAW

8Festo – SFAW – 1602a English

Flow rate

Temperature

InA

analogue Q

InB

analogue T

InC

Volume pulse VP

InD

Volume recorder V

OutA

binary Q/BDC1

OutC

binary VP/BDC3

OutB

binary T/BDC2

OutD

binary Q/BDC4

Pin 4

Q or VP

InA

analogue Q/PDV1_2byte

InB

analogue T/PDV2_2byte

InD

analogue V/onReq_4byte

Pin 2

T or Q

Pin 5

Q or T

Fig. 3 SFAW-…PNLK-PN-VBA-…: Signal structure

2.1 Operating statuses

Operating status Function

RUN mode – Basic status after the operating voltage is switched on

– Display of the current measured value

– Display of the selected inputs and outputs

– Switchover between the measured variables of flow rate, volume and

temperature

SHOW mode – Display of current settings of the switching outputs and analogue output

– Display and resetting of the minimum and maximum values

Edit mode – Setting or modification of parameters

TEACH mode – Acceptance of the current measured value to determine switching points

RECORDER mode – Manual measurement of the accumulated volume

Tab. 2 Operating statuses of the SFAW

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Festo – SFAW – 1602a English 9

2.2 Switching outputs

2.2.1 Switching functions

Threshold value comparator in the flow measurement for OutA or OutD and in the temperature meas

urement for OutB

Function NO (normally open) NC (normally closed)

Switching function:

– 1 switching point (SP)

TEACH mode1):

– 2 teach-in points (TP1,

TP2)

– SP = ½ (TP1+TP2)

OUT

TP1 TP2

OUT

TP1 TP2

1) Only with flow measurement

Tab. 3 Threshold value comparator: setting of switching point SP and hysteresis HY

Window comparator in the flow measurement for OutA or OutD and in the temperature measurement

for OutB

Function NO (normally open) NC (normally closed)

Switching function:

– 2 switching points

(SP.Lo, SP.Hi)

TEACH mode1)2):

– 2 teach-in points (TP1,

TP2)

– TP1 = SP.Lo, TP2 = SP.Hi

HY HY

OUT

TP1=SP.Lo TP2=SP.Hi

OUT

HY HY

TP1=SP.Lo TP2=SP.Hi

1) Only with flow measurement

2) SP.Lo = smaller value, SP.Hi = larger value, independent of the Teach sequence

Tab. 4 Window comparator: setting of switching points SP.Lo and SP.Hi and hysteresis HY

2.2.2 Colour change

A red colour change in the display can be set for OutA, OutB and OutD. As a result, the system status

can be identified over a large distance.

The measured variable that first caused the colour change always appears in the display. The unit and

the corresponding output OutA/OutC/OutD flash in the sub display. The display remains red until all

switching outputs are in the blue status again.

SFAW

10 Festo – SFAW – 1602a English

2.2.3 Volume pulse

A threshold value for the volume can be set in the accumulated volume measurement. If the configured

threshold value is reached, a switching impulse is emitted at the output OutC for an adjustable period

of time. With each switching impulse, the volume measurement is started again (èFig. 4).

Volume pulse with accumulated volume measurement

Setting NO (normally open) Setting NC (normally closed)

OUT C

0Pulse

OUT C

Pulse

Fig. 4 Volume pulse

2.3 Analogue output

Analogue signal

The signal of the analogue output can be assigned the physical measured variables of flow rate or tem

perature. The physical measured value of flow rate is configured as standard.

Output signal

The analogue output can be operated either as a voltage output 0 … 10 V or 1 … 5 V or as a current

output 4 … 20 mA. The voltage output 0 … 10 V is set at the factory.

Scaling of the analogue signal

The analogue output signal 0 … 10 V, 1 … 5 V or 4 … 20 mA is assigned to the complete sensing range at

the factory. If only part of the sensing range is to be used, the analogue value output can be scaled to

this partial range.

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