IFM Electronic PY2954 Manuel utilisateur

Operating instructions

Combined pressure sensor

PY2954

80007012 / 00 12 / 2013

Contents

1 Preliminary note��3

1�1 Symbols used ��3

2 Safety instructions ��4

3 Function and features��5

4 Function��5

4�1 Evaluation��5

4�2 Switching function��6

4�3 Analogue function ��6

5 Installation��8

6 Electrical connection��8

7 Operating and display elements ��9

8 Menu��10

8�1 Menu structure��10

8�2 Explanation of the menu�� 11

9 Parameter setting ��12

9�1 Parameter setting general ��12

9�2 Setting the output signal ��14

9�2�1 Setting the output function��14

9�2�2 Setting the switching limits ��14

9�2�3 Scaling the analogue value ��14

9�3 User settings (optional)��15

9�3�1 Setting the unit of measurement for the system pressure ��15

9�3�2 Configuring the display ��15

9�3�3 Zero-point calibration��15

9�3�4 Setting the delay time for the switching outputs ��15

9�3�5 Setting the output polarity��16

9�3�6 Setting the damping for the switching outputs��16

9�3�7 Setting the damping for the analogue output��16

9�4 Service functions ��16

9�4�1 Reading the min�/max� values for the system pressure��16

10 Operation��17

10�1 Read the set parameter values ��17

1 Preliminary note

1.1 Symbols used

►Instruction

> Reaction, result

[…] Designation of buttons, switches or indications

→Cross-reference

Important note

Non-compliance can result in malfunctions or interference�

10�2 Fault indication ��17

11 Technical data and scale drawing ��17

11�1 Setting ranges��17

12 Factory setting ��18

2 Safety instructions

• Read this document before installing the unit� Ensure that the product is suita-

ble for your application without any restrictions�

• Non-adherence to the operating instructions or technical data can lead to

personal injury and/or damage to property�

• Improper or non-intended use may lead to malfunctions of the unit or to unwan-

ted effects in your application� That is why installation, electrical connection,

set-up, operation and maintenance of the unit must only be carried out by

qualified personnel authorised by the machine operator�

• In order to guarantee the correct condition of the device for the operating time it

is necessary to use the device only for media to which the wetted materials are

sufficientlyresistant(→Technicaldatasheet).

• The responsibility whether the measurement devices are suitable for the

respective application lies with the operator� The manufacturer assumes no

liability for consequences of misuse by the operator� Improper installation and

use of the measurement devices results in a loss of the warranty claims�

• Due to the behaviour of the elastomer seals when exposed to gases, use with

gaseous media is restricted to max� 25 bar� In the event of pressures above

25 bar, a differentiated consideration is necessary� In these cases it is absolu-

tely necessary to contact our technical sales experts!

3 Function and features

The pressure sensor detects the system pressure of machines and installations�

Applications

Type of pressure: relative pressure

Order no. Measuring range

Pressure resistance

(max. permissible

pressure)*

Bursting pressure

bar PSI bar PSI bar PSI

PY2954 -1��10 -14�5��145 75 1088 150 2 175

* in case of static overpressure

MPa = bar ÷ 10 / kPa = bar × 100

Static and dynamic overpressures exceeding the indicated overload pres-

sure are to be avoided by taking appropriate measures�

The indicated bursting pressure must not be exceeded� Even if the

bursting pressure is exceeded only for a short time, the unit can be destro-

yed� NOTE: Risk of injury!

Pressure Equipment Directive (PED): The units comply with section 3, ar-

ticle (3) of the Directive 97/23/EC and are designed and manufactured

for media of fluid group 2 (stable gases and non-superheated liquids) in

accordance with the sound engineering practice�

4 Function

4.1 Evaluation

• The unit shows the current system pressure on its display�

• It generates 2 output signals according to the parameter setting�

OUT1 •switching signal for pressure limit values�

OUT2 •switching signal for pressure limit values�

•analogue signal for pressure (4��20 mA or 0��10V)�

4.2 Switching function

OUTx changes its switching state if it is above or below the set switching limits

(SPx, rPx)� The following switching functions can be selected:

• Hysteresisfunction/normallyopen:[OUx]=[Hno](→fig.1).

• Hysteresisfunction/normallyclosed:[OUx]=[Hnc](→fig.1).

First the set point (SPx) is set, then the reset point (rPx) at the requested distance�

• Windowfunction/normallyopen:[OUx]=[Fno](→fig.2).

• Windowfunction/normallyclosed:[OUx]=[Fnc](→fig.2).

The width of the window can be set by means of the distance between SPx and

rPx� SPx = maximum value, rPx = minimum value�

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1 2

P = system pressure; HY = hysteresis; FE = window

4.3 Analogue function

• [OU2] defines whether the set measuring range is provided as a 4��20 mA

signal ([OU2] = [I]) or a 0��10 V signal ([OU2] = [U])�

• The analogue start point [ASP] determines at which measured value the output

signal is 4 mA or 0 V�

• The analogue end point [AEP] determines at which measured value the output

signal is 20 mA or 10 V�

Minimum distance between [ASP] and [AEP] = 25 % of the span�

Voltage output 0 ... 10 V

Factory setting Measuring range scaled

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P = system pressure, MEW = final value of the measuring range

In the set measuring range the output signal is between 0 and 10 V�

It is also indicated:

System pressure above the measuring range: output signal > 10 V�

Current output 4 ... 20 mA

Factory setting Measuring range scaled

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P = system pressure, MEW = final value of the measuring range

In the set measuring range the output signal is between 4 and 20 mA�

Also signalled:

• System pressure above the measuring range: output signal > 20 mA�

• System pressure below the measuring range: output signal 4��3�8 mA�

5 Installation

Before mounting and removing the sensor, make sure that no pressure is

applied to the system�

►Insert the unit in a G¾ process connection�

►Tighten firmly�

6 Electrical connection

The unit must be connected by a qualified electrician�

The national and international regulations for the installation of electrical

equipment must be adhered to�

Voltage supply to EN50178, SELV, PELV�

►Disconnect power�

►Connect the unit as follows:

2 x p-switching 2 x n-switching

L+

2: OUT2

4: OUT1 L

L+

2: OUT2

4: OUT1

1 x p-switching / 1 x analogue 1 x n-switching / 1 x analogue

L+

2: OUT2

4: OUT1 L

L+

2: OUT2

4: OUT1

Colours to DIN EN 60947-5-2

7 Operating and display elements

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1 to 8: Indicator LEDs

- LED 1 to LED 6 = system pressure in unit of measurement as indicated on the label�

- LEDs 4 to 6 not used for units with 3 adjustable units of measurement�

- LEDs 5 and 6 not used for units with 4 adjustable units of measurement�

- LED 7, LED 8 = switching state of the respective output�

9: Alphanumeric display, 4 digits

- Indication of the current system pressure�

- Indication of the parameters and parameter values�

10: Set pushbutton

- Setting of the parameter values (scrolling by holding pressed, incremental by pressing

briefly)�

11: Mode/Enter pushbutton

- Selection of the parameters and acknowledgement of the parameter values�

8 Menu

8.1 Menu structure

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