IFM Electronic PI7093 Manuel utilisateur

Operating instructions

Electronic pressure sensor

PI709x

706064/00 06/2011

Contents

1 Preliminary note��3

1�1 Symbols used ��3

2 Safety instructions ��3

3 Functions and features ��4

3�1 Applications ��4

4 Function��4

4�1 Processing of the measured signals��4

4�2 Pressure monitoring / switching function ��5

4�3 Pressure monitoring/ analogue function ��5

4�4 Diagnostic function ��7

5 Installation��8

6 Electrical connection��10

7 Operating and display elements �� 11

8 Menu��12

8�1 Menu structure��12

8�2 Menu explanation ��13

9 Parameter setting ��14

9�1 Parameter setting general ��14

9�2 Configuring the display (optional) ��16

9�3 Setting the output signal ��16

9�3�1 Setting the output function��16

9�3�2 Setting the switching limits ��17

9�3�3 Scaling the analogue value ��17

9�4 User settings (optional)��18

9�4�1 Zero-point calibration��18

9�4�2 Setting the delay time for OUT1 ��18

9�4�3 Setting the output polarity for OUT1 ��18

9�4�4 Setting the damping for the switching signal ��18

9�4�5 Setting the damping for the analogue signal ��18

9�5 Service functions ��19

9�5�1 Reading the min�/max� values for the system pressure��19

9�5�2 Reset all parameters to the factory setting ��19

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�

2 Safety instructions

• Read this ducument 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�

• Inallapplicationscheckcomplianceoftheproductmaterials(→chapter12

Technical data) with the media to be measured�

• ForunitswithcULusapprovalandthescopeofvaliditycULus→chapter6

Electrical connection�

10 Operation��19

10�1 Read the set parameter values ��19

10�2 Fault indication ��19

10�3 Cleaning of the filter cover��20

11 Scale drawing ��21

12 Technical data��21

12�1 Setting ranges ��23

13 Factory setting ��24

3 Functions and features

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

3.1 Applications

Type of pressure: relative pressure

Order no. Measuring range Permissible

overload pressure Bursting pressure

bar PSI bar PSI bar PSI

PI7093 -1��25 -14�4��362�7 100 1 450 350 5 070

PI7094 -1��10 -14�5��145 50 725 150 2 175

PI7096 -0�124��2�5 -1�8��36�24 20 290 50 725

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 bur-

sting pressure is exceeded only for a short time, the unit can be destroyed�

NOTE: Risk of injury!

4 Function

4.1 Processing of the measured signals

• The unit displays the current system pressure�

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

OUT1

2 selection options

•switching signal for pressure limit values�

•diagnostic signal (in case of a fault output 1 becomes inactive)�

OUT2 •switching signal for pressure limit values�

4.2 Pressure monitoring / 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 Diagnostic function

Output 1 is used as a diagnostic output according to DESINA specification if OU1

= dESI�

• If there is no fault, the output is switched and carries UB+ (if P-n = PnP) or UB-

(if P-n = nPn)�

• In case of malfunctions the output becomes inactive� The following malfunc-

tions are detected:

- undervoltage (starting with 18 V); overvoltage (starting with 33 V);

- temperature at the process connection too high (> 150°C) / too low (< -30°C);

- intrinsic temperature of the unit too high (> 100°C) / too low (< -30°C);

- RAM fault�

5 Installation

Ensure that no pressure is applied to the installation while mounting or

removing the sensor� Please note: Display „0%“ does not mean that the

system is free of pressure!

Horizontal mounting recommended for high medium temperatures�

Aseptoflex adapters ensure that the

sensor can be connected to different

process connections�

(The adapters have to be ordered

separately as accessories�)

Mounting operation:

►Mount the adapter (C) to the

sensor�

►Fix sensor + adapter by means of a

coupling nut, a clamp flange or si-

milar (B) to the process connection�

If it is not possible to slide the fixing

element (B) down over the top of the

sensor: slide it up over the bottom

of the sensor before the adapter is

mounted�

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A = rotatable housing

Mounting the Aseptoflex adapter

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1 2

►Slightly grease the threads and sealing areas of the sensor and adapter with

lubricating paste (D)�

The paste must be suitable and approved for the application and compatible

with the elastomers used� Recommendation: Klüber paste UH1 84-201 with

USDA-H1 approval for the food industry�

►Make sure that the O-ring (E) is correctly positioned�

►Screw the sensor into the adapter until it is hand-tight� Do not damage the

sealing chamfers�

►Clamp sensor and adapter into a clamping device (F)� Tighten the clamping

device only slightly so that the adapter does not warp�

►Tighten the sensor using a spanner until you can feel the end stop (correspon-

ding to a maximum tightening torque of 25 Nm / 18 ftlb)� Note: Do not overtigh-

ten� This can have an adverse effect on the sealing�

NOTE: A guarantee for a long-term stable and maintenance-free fitting with no bug

traps in the hygienic sealing of the metal seal (Aseptoflex connection) is only valid

for once-only mounting�

Welding adapter

►First weld the adapter, then mount the sensor� Follow the instructions included

with the adapter�

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�

For units with cULus approval and the scope of validity cULus: The device shall

be supplied from an isolating transformer having a secondary Listed fuse rated as

noted in the following table�

Overcurrent protection

Control-circuit wire size Maximum protective device rating

Ampere

AWG (mm2)

26 (0�13) 1

24 (0�20) 2

22 (0�32) 3

20 (0�52) 5

18 (0�82) 7

16 (1�3) 10

The Sensor shall be connected only by using any R/C (CYJV2) cord, having suitable ratings�

►Disconnect power�

►Connect the unit as follows:

OUT1 p-switching OUT1 n-switching

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Pin 1 Ub+

Pin 3 Ub-

Pin 4 (OUT1) •binary switching output for pressure monitoring

•diagnostic output if [OU1] = [dESI]

Pin 2 (OUT2) •binary switching output for pressure monitoring

Core colours of ifm sockets:

1 = BN (brown), 2 = WH (white), 3 = BU (blue), 4 = BK (black)

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�

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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Ce manuel convient aux modèles suivants

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