Kobold PDD Series User manual

Operating Instruction
for
Electronic Pressure Switch
Model: PDD

PDD
Page 2 PDD K04/0217
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. EU Declaration of Conformance..................................................................20
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

PDD
PDD K04/0217 Page 3
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 EC-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
Page 4 PDD K04/0217
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 1/2 A
R 16
z
* min.
S
ealing
(
DIN
16288)
Flat sealing
7 +0,2
G 1/2 A
R 16
z
* min.

7 +0,2
21,3-0,2
G 1/4 A
R 16
z
* min.
7
20
,5
14
5
14
5
19
24
5
24
5
13
16
5
9
+0,2
-
0,5 -
0,5 -
0,5
+1
+1 +1

PDD
PDD K04/0217 Page 5
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
Plug
Accessories Plug
Plug with cable ZUB-KAB-12K002
PDD-1 PDD-2
not connected not connected
+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
Page 6 PDD K04/0217
PNP Wiring
Plug
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.

PDD
PDD K04/0217 Page 7
8.1.Function Keys
In Normal mode (Measuring mode)
PDD-1x and PDD-2x
PDD-5x and PDD-7x
In set up mode
9.Set-Up
The following parameters may be changed:
Display range
Standard
factory pre-set
Switch point (Spo, SP1, SP2) -199...999 50 % f.s.
Hysteresis (HYS, HY1, HY2) -199...0 000
Window point (duo, only PDD-1/-2) Switch point ...999 --- (inactive)
Filter (Filt) 1/2/4/8/16/32/64 1
Time response (dS1, dS2, dr1, dr2)
->PDD –5/7 (dSE,drE) -> PDD –1/2 0,0...99,5 sec. 0,0
Contact type (Con, Co1, Co2) (N.O.) or (N.C.) contact N.O. contact
Zero-point (S-A, Start adjust) 000 is adjusted
Code (CCo, change code) 000...999 000
3 sec.
Normal Mode
Any time:
or 20 sec.
W
ithout pressing any
key
: Next level
: Change value
: Press 3 sec set-up mode
: Switch point/display window point
: Switch point/display hysteresis

PDD
Page 8 PDD K04/0217
Save
9.1.Parameter setting
From main menu option (e.g. Switching point, "SPo"), press "" key in order to
go to Parameter set up. The following flow diagram shows the sequence of steps
required to change a single parameter.
[from main menu option]
1. Set position
2. Set position
3. Set position
Adjust decimal point
Save selected value or
set new value
[To next main menu option]

PDD
PDD K04/0217 Page 9
9.2.Set-up for PDD-1x and PDD-2x
Contact type
N/O contact
N/C contact Sav
e
Off-Delay
Setting parameter
Setting parameter
On-Delay
Duo-Point
Setting parameter
Hysteresis
Setting parameter
Switch pt. 1
Setting parameter
Code input
3 sec
Code=
Setting parameter

PDD
Page 10 PDD K04/0217
Seite 2 von 2
Change code
Setting parameter
Setting parameter
Set-up
Startpoint 7sec
Filter
7 levels
Setting parameter 1..2..4...64