Kobold PDD Operating Manual

Operating Instruction

for

Electronic Pressure Switch

Model: PDD

PDD

1. Contents

1. Contents ........................................................................................................ 2

2. Note .............................................................................................................. 3

3. Instrument Inspection .................................................................................... 3

4. Regulation Use .............................................................................................. 3

5. Operating Principle ........................................................................................ 4

6. Mechanical Connection ................................................................................. 4

7. Electrical Connection .................................................................................... 5

8. Commissioning .............................................................................................. 6

8.1. Function Keys ...................................................................................... 7

9. Set-Up ........................................................................................................... 7

9.1. Parameter setting ................................................................................ 8

9.2. Set-up for PDD-1x and PDD-2x ........................................................... 9

9.3. Set-up for PDD-5x and PDD-7x ......................................................... 11

10. Main Menu Options ..................................................................................... 13

10.1. Switch point ....................................................................................... 13

10.2. Hysteresis .......................................................................................... 13

10.3. Window point (Duo point) (only PDD-1 and PDD-2) .......................... 13

10.4. Switching behaviour ........................................................................... 14

10.5. Filter ................................................................................................... 15

10.6. Time response ................................................................................... 15

10.7. Contact type ....................................................................................... 15

10.8. Set-up start point ............................................................................... 16

10.9. Code .................................................................................................. 16

11. Maintenance ............................................................................................... 16

12. Technical Information .................................................................................. 17

13. Order Codes ............................................................................................... 18

14. Dimensions ................................................................................................. 19

15. Declaration of Conformance ....................................................................... 20

Manufactured and sold by:

Kobold Messring GmbH

Nordring 22-24

D-65719 Hofheim

Tel.: [phone]

Fax: [phone]

E-Mail: [e-mail]

Internet: www.kobold.com

Page 2 PDD K03/0507

PDD

2. Note

Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.

When used in machines, the measuring unit should be used only when the
machines fulfil the EWG-machine guidelines.

3. Instrument Inspection

Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.

Scope of delivery:

The standard delivery includes:

• Electronic Pressure Switch model: PDD

• Operating Instructions

4. Regulation Use

Pressure switches serve for the regulation and monitoring of pressure in
containers, hydraulic and pneumatic systems, and refrigeration technology etc.
This instrument may only be used with liquids that are compatible with the wetted
parts.

PDD K03/0507 Page 3

PDD

S

16288)

∅

5. Operating Principle

KOBOLD pressure sensors / switches series PDD are cost effective electronic
pressure switches with digital indication of actual pressure. Two switch points, on
/ off-switch delay and hysteresis that are within the measuring range are
programmable.
A piezo resistive ceramic sensor is used. The units can be used where high
switching accuracy is needed. Long-term stability, repeatability and the compact
and robust design makes it an ideal unit for use in OEM applications.

6. Mechanical Connection

The pressure tappings should be prepared according to the following
specification for the screw-in holes.
For the purpose of sealing, disc-sealing (DIN 16 258) or profile sealing may be an
adequate choice. The correct torque depends on the material, and the form of the
seal and the pressure connection of the pressure sensor.
The mounting place should be free from strong vibrations and radiant heat.
The admissible site conditions of pressure sensors are to be maintained.
After making pressure connection and electrical connection, the sensors are
ready for use.

G 1/4 A

R 16

z

ealing (DIN

* min.

­+1

0,5

9

16

Flat sealing

R 16

z

G 1/2 A

* min.

­0,5

+1 +1

14

24

R 16

z

∅

21,3

G 1/2 A

-0,2

14

* min.

­0,5

20
,5

24

+0,2

∅

7

+0,2

7

+0,2

∅

7

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PDD

7. Electrical Connection

Attention! Ensure that the voltage levels of your supply system are
in agreement with the voltage levels given on this manual.

• Make sure that the supply wires are de-energised.

• The connection is via an M 12x1 plug, as shown below.

• Matching couplings with different cable lengths are available optionally.

Attention! Incorrect wiring will lead to damage of the unit’s
electronics.

Plug connections

PDD-1 PDD-2

not connected not connected

Plug

Accessories Plug
Plug with cable ZUB-KAB-12K002

+24 VDC +24 VDC

PNP-Output NPN-Output

0 V / GND 0 V / GND

0 V / GND 0 V / GND

PDD-5 PDD-7

PNP-Output 1 NPN-Output 1

+24 VDC +24 VDC

PNP-Output 2 NPN-Output 2

0 V / GND 0 V / GND

0 V / GND 0 V / GND

PDD K03/0507 Page 5

PDD

Plug

PNP Wiring

NPN Wiring

Plug

8. Commissioning

Attention! Please take note that during operation at high
temperatures, the surface and the elements within the unit may
become very hot!

Connect the pressure switch according to the figure shown on the previous page,
and supply the device with the specified voltage.

After switching the unit on, the measuring range (full scale) is displayed for
3 seconds.

Page 6 PDD K03/0507