Kobold TDD User manual

Operating Instructions
for
Electronic Temperature Switch
Model: TDD

TDD
page 2 TDD K09/1022
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 4
5.Operating Principle ........................................................................................ 4
6.Mechanical Connection ................................................................................. 5
7.Electrical Connection .................................................................................... 6
7.1Connector pin assignment TDD-153, TDD-353 ................................... 6
7.2Connector pin assignment TDD-553, TDD-753 ................................... 7
8.Commissioning.............................................................................................. 8
8.1Button function ..................................................................................... 8
9.Adjustments .................................................................................................. 9
9.1Value setting ........................................................................................ 9
10.Set-up Mode ............................................................................................... 10
10.1Adjustments for TDD-1… and TDD-3… ............................................. 10
10.2Adjustments for TDD-5… and TDD-7… ............................................. 11
11.Main Menu Options ..................................................................................... 13
11.1Switching point ................................................................................... 13
11.2Hysteresis .......................................................................................... 13
11.3Window point (Double Point), (only for TDD-1… and TDD-3…) ........ 13
11.4Switching behaviour ........................................................................... 14
11.5Filter (only for TDD-1… and TDD-3…)............................................... 15
11.6Transient response (only for TDD-5… and TDD-7…) ........................ 15
11.7Contact model .................................................................................... 15
11.8Change code ..................................................................................... 16
12.Maintenance ............................................................................................... 17
13.Technical Information .................................................................................. 18
14.Order codes ................................................................................................ 19
15.Dimensions ................................................................................................. 20
16.Disposal ...................................................................................................... 21
17.EU Declaration of Conformance ................................................................. 22
18.UK Declaration of Conformity ...................................................................... 23
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

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TDD K09/1022 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 instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
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 Temperature Switch model: TDD

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4. Regulation Use
Any use of the device, which exceeds the manufacturer’s specification, may
invalidate its warranty. Therefore, any resulting damage is not the responsibility of
the manufacturer. The user assumes all risk for such usage.
5. Operating Principle
The KOBOLD Model TDD temperature sensor is used for economical measuring
and monitoring of temperature. It can be used for any application in which
temperatures must be monitored with great accuracy.
The sensor element is a semiconductor that outputs a digital signal to the electronic
processor in 0.5 °C steps. The measured values are shown on a 3-digit LED
display. The switch setpoint can be adjusted as required within the measuring
range.

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6. Mechanical Connection
Before installation:
 Please check, if the switching temperature and switching function of TDD
device is in agreement with your system requirements (specifications).
 Ensure that the maximum operating pressure or temperature for the device
is not exceeded.
Installation:
 This device is installed in a matching sleeve. Use sealing tape (i.e. Teflon
tape) or a flat gasket to seal the threaded connections.
 The mounting position should be selected so that the sensor tip is always
immersed in the liquid being monitored, thus ensuring optimal heat
exchange between the liquid and the temperature sensor.
 Note that deposits that build up on the sensor tip or dirty liquids can have
an insulating effect and cause invalid measurements.
 Whenever possible, after the mechanical installation is complete, the joint
at the threaded connector and the supply piping should be checked to
ensure that it is tight and does not leak.

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7. Electrical Connection
Attention! Make sure that the supply voltage of your system
corresponds with the voltage of the measuring unit specified on
the nameplate.
 Make sure that the supply wires are de-energized.
 Make the connection using the M12x1 connector socket, as shown in the
accompanying diagram.
 Appropriate connectors with different cable lengths are optionally available.
Attention! Incorrect wiring will lead to damage the unit’s
electronics.
7.1 Connector pin assignment TDD-153, TDD-353

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7.2 Connector pin assignment TDD-553, TDD-753

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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 temperature switch according to the figure shown on the previous
page, and supply the device with the specified voltage.
8.1 Button function

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TDD K09/1022 page 9
9. Adjustments
The following values can be changed at the temperature transmitter:
9.1 Value setting
From main menu option (e. g. Switching point, "SPo"), press " " key in order to
go to Parameter Adjustment. The following structure shows the sequence of steps
required to change a single parameter.
[From main menu option]

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10. Set-up Mode
10.1 Adjustments for TDD-1… and TDD-3…

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10.2 Adjustments for TDD-5… and TDD-7…

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11. Main Menu Options
11.1 Switching point
In menu option "SP0", “SP1” and “SP2” the switching point is entered. A setting
value between -199 and 999 can be selected. This value can also include a decimal
point. The decimal point can be set at two points (e. g. 10.0 or 100). If the
measuring value is the set switch point, the temperature switch is activated and is
signalised by a lightning LED.
If the hysteresis is zero and the window point is inactive, the temperature switch
will be reacted if the temperature is below the switch point.
11.2 Hysteresis
After the setting of switching point, the hysteresis can be entered as a negative
value in the "HYS", “HY1” and “HY2” menu. The standard hysteresis value is zero.
In operation condition this can lead to ambiguous switching behaviour if the reading
fluctuates around the switching point or window point. Aid can be given here by
increasing the hysteresis. The hysteresis relates to the switching point and the
window point (switching point minus hysteresis; window point plus hysteresis).
Example: Switching point 100 °C; Hysteresis: -2.5 °C
The temperature switch switches when 100 °C is exceeded and
switches back when the reading drops below 97.5 °C.
11.3 Window point (Double Point), (only for TDD-1… and TDD-3…)
As well as the switching point, it is also to define a "duo" (duo-point), the window
point. This must be higher than the switching point. Using the window point and the
switching point it is possible to monitor the measurement value in a certain range.
The switching point limits the measurement range to smaller values and the
window point to larger values.
If the window point (duo-point) is less than or equal to the
switching point, an error report (Er4) will be indicated on the
display and its value is deleted and its function is invalid (in the
case that the window point and switching point out of adjustment).
The value is set in the same way as the switching point.
The window point is needed for process, monitoring of a certain temperature range.
Example: Switching point: 50 °C; window point: 70 °C; hysteresis: -2 °C
The temperature contact switches when 50 °C is exceeded.
If the temperature remains between 48 °C (50-2) and 72 °C (70+2), the contact will
also remain in active switching condition (LED on). If it exceeds 72 °C or drops
below 48 °C the temperature switch switches back.

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11.4 Switching behaviour
The following diagram clarifies the switching behaviour of the temperature switch.
The contact closes (contact type: no) when it drops below the switching point or
the window point. It only opens again if the window point plus hysteresis is
exceeded or if it drops below the switching point minus hysteresis. An LED
indicates the switching condition of the switching point.

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11.5 Filter (only for TDD-1… and TDD-3…)
The filter function "Filt" makes the measured value for switching purposes the
running average from the measured value samples. The following values can be
adjusted (see section 9. Adjustments):
1 / 2 / 4 / 8 / 16 / 32 / 64 samples
The filter value determines the dynamic behaviour of the display value. The larger
the Filt value, the more dampened the display response. With the adjustment of
the filter value " 1 " the filter is switched off, i. e. the display value is equal to the
unfiltered measured value.
The integrated overshoot detector reacts to a step change of approx. 6.25% of
the measurement range (full scale). During a detected measured value overshoot
of >6.25%, the instantaneous measured value is transferred directly to the display
without filtering.
11.6 Transient response (only for TDD-5… and TDD-7…)
Using the menu items “dS1”, “dS2”, “dr1” and “dr2” it is possible to set the delay
set and the delay reset.
The delay set causes delayed switching of the output if the switching threshold is
exceeded.
The delay reset causes a delayed resetting of the output if it drops below the
switching threshold – hysteresis.
The setting range for both parameters is 0.0 ... 99.5 seconds. The step rate is 0.5
seconds.
With these two functions it is also possible to suppress temporary disturbances.
11.7 Contact model
In menu option "Con", “Co1” and “Co2” the transistor switching output function is
set. The switching function changes from
N/O contact
to
N/C contact, and back.
N/O contact means: Contact closes on exceeding the switching point. N/C contact
means: Contact opens on exceeding the switching point.

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11.8 Change code
The code change "CCo" protects the device against unauthorised changes in
adjusted device parameters. If the code is different from 000, the user must input
the adjusted code in order to perform any programming changes.

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12. Maintenance
This device is maintenance-free when properly installed. However, deposits from
dirty liquids can lead to invalid measured values.

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13. Technical Information
Housing cover: St. steel 1.4305
Housing: St. steel 1.4404 (compact version)
St. steel 1.4305 (separate version)
Connection compact version:
G½ or G¾ male thread
St. st. 1.4404
Option: ½ NPT or ¾ NPT
Connection separate version:
Sensor: 100 mm, 6 mm; st. st. 1.4404
Cable: 2.5 m PTFE with M12x1 plug
Housing: M25x1.5 with counter nut
Principle of measurement: Semiconductor
Display: TDD-1,-3,-5,-7: 3-digit LED, digit-height: 7 mm
Resolution: TDD-1,-3,-5,-7: 0.5 °C to 100 °C
1 °C up to 100 °C
Max. temperature
of measured medium: 20...+120 °C (compact version)
-50...+125 °C (separate version)
Max. ambient temp.: -20...+50 °C
Max. pressure: 80 bar
Power supply: 24VDC ± 20%
Current intake: TDD-1,-3,-5,-7: approx. 50 mA
(without switching output);
Electrical connection: Plug M12x1 or
PVC-cable (cable tmax: 90 °C)
Switching output: Semiconductor
PNP or NPN (factory set),
max. 300 mA, short-circuit proof
Contact function: N/O / N/C, window, adjustable
Switch. point adjustment: programmable
Switching display: programmable
Switching state display: 1 (2) LED
Hysteresis: programmable
ON/ OFF- switching delay: 0.5....99.5 (separately adjustable)
(only TDD-5, TDD-7)
Measuring cycle: 0.5 s
Accuracy (sensor): ± 0.5 °C (between –10...+85 °C)
± 2 °C (between +85...125 °C)
± 2 °C (between -50...-10 °C)
Protection cat: IP 65

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14. Order codes

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15. Dimensions