Kobold **C30R Series, **C30M Series, **C3 Series, **C34N Series, **C34P Series Operating Instructions Manual

Operating Instruction

Supplement

for

Compact Electronics

Model:..C30R;..C30M

..C34P;..C34N

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1. Contents

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

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

3. Electrical Connection .................................................................................... 3

4. Programming ................................................................................................ 5

5. Maintenance ............................................................................................... 12

6. Technical Information .................................................................................. 12

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

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2.Note

This programming instruction is only a supplement to the operating
instruction for the sensor.

3. Electrical Connection

3.1. General

Attention! Make sure that the voltages in your plant correspond
with the instrument voltages

 Make sure that the supply wires are de-energized.
 Connect the supply voltage and evaluation of both output signals to the plug

connector PINs as shown in section 3.2 and 3.3.

 We recommend the use of wires with cross sectional area of min. 0,25 mm²

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

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3.2. Compact Electronics: (..C30R, ..C30M)

3.3. Compact Electronics: (..C34P, ..C34N)

Terminals 3 and 5 are linked internally and can therefore be used either for the
output signal or the power supply.

+ Vs

GND

GND

1

2

4

3

5

Switc h o u t 2

Switc h o u t 1

+ Vs

GN D

GN D

1

2

4

3

5

(0)4 -20 mA

Switc h o ut 1

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4. Programming

Connect the compact electronics according to the previous wiring diagram and
apply the specified voltage.

The measuring range (upper range value) is displayed for 3 seconds after
switch-on.

4.1. Key Function

Standard mode (measuring mode)

Set-up mode

4.2. Settings

The following values can be changed in the compact electronics:

Scale range Factory setting

Switching point (SPo, SP1, SP2)

0 - 999 0.00

Hysteresis (HYS)

-199 - 0 -0.00

Window point (duo)

Switching point ...999 --- (de-activated)

Filter (Filt)

1/2/4/8/16/32/64 1

Contact type (Con, Co1, Co2) N/O contact (no), N/C (nc)

or frequency (Fr)**

no (N/O contact)

Start current (S-C)*

000 - 999 000

End current (E-C)*

000 - 999 Upper range value

Start current selection (SCS)

0-- (0 mA), 4-- (4 mA) 4 mA

Change code (CCo)

000 - 999 000

* Lower and upper range values of the flow rate are based on 0/4-20 mA.
** only for sensors with impulse output (e.g. DPE)

: pressing 3 sec.

set-up mode

: switchpoint/window point

Standard mode

3 sec

or 20 sec

no key pressing

Anytime:

: Next level

: Set value

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4.3. Value Setting

You can select Value setting in the main menu item (for example: Switching point,
"SPo") by pressing the "" key. The structure shown below illustrates the
universal routine for changing individual parameters.

from the main menu item

1. Digit setting

2. Digit setting

3. Digit setting

Decimal point
setting

Choosed value
storing or new
setting

to the next main menu item

Storing

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4.4. Set-up Mode

Changing code

N/O

Storing

Contact 1
function

N/O

N/C

Frequency*

Storing

Filter

7 Levels

Value setting

Hysteresis

Switching
point 2

Swichting
point 1

Code=

3 sec

Code entering

Value setting

Value setting

Value setting

Value setting

Contact 2
function

Value setting

*Only for sensors with impulse output

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Code entering

Filter

Windowpoint

Hysteresis

Switching point

3 sec

Code=

Start current

7sec

7sec

Contact function

Value setting

Value setting

Value setting

Value setting

Value setting

7 levels

N/O

N/C

Frequency*

Value setting

Value setting

Storing

End current

*Onl

y

for sensors with impulse output

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Changing code

Value setting

Storing

7sec

4-20

m

A

0-20

m

A

Analog output

choosing

4.5. Main Menu Items

Switching point

The switching point is entered in menu item "SPo, SP1, SP2". A value in the
range 000 to 999 may be chosen. A decimal point position is also assigned to this
value. The position of the decimal point can be set after the first, second or last
position (no decimal point). If the indicated value exceeds the set switching point,
then the electronics switches and energizes the LED.
If the hysteresis is equal to zero and the window point is de-activated, the
electronic switches back whenever the indicated value falls below the switching
point.

Hysteresis

After the switching point, hysteresis can be entered as a negative value in the
menu "HYS". The default hysteresis value is zero. However this can lead to
confused switching, when the measuring signal fluctuates around the switching
point or window point. This problem can be cured by increasing the hysteresis.
The hysteresis is based on the switching point and the window point (switching
point minus hysteresis; window point plus hysteresis).

Example: switching point 100 l/min; hysteresis: -2.5 l/min
The electronics switches when 100 l/min is exceeded and switches

back when the flow rate falls below 97.5 l/min.

Window point (duo point)

A window point "duo" (duo point) can be defined in addition to the switching
point. The window point must be greater than the switching point. The measured
value can be monitored within a set range by means of the window point and
switching point. The switching point marks the lower end of the range of values
and the window point the upper end.

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If the window point (duo point) is lower than or equal to the switching point,
an error message is displayed (Er4), its value is then deleted and thus its
function is disabled (applies to window point and switching point setting).

Value setting is similar to switching point setting.
The window point serves to monitor the measured value within a set range.

Example: Switching point: 100 l/min; window point: 150 l/min; hysteresis: -1 l/min
The electronics switches when 100 l/min is exceeded. When the measured value
stays within the limits 99 l/min (100-1) and 151 l/min (150+1), then the electronics
also remains in the activated switch state (LED on). Should the measured value
exceed 151 l/min or drop below 99 l/min, then the electronics switches back.

Switching performance

The switching performance of the electronics is illustrated in the diagram below.
The contact closes (N/O contact) when the switching point is exceeded or when
the value drops below the window point. It opens when the window point plus
hysteresis is exceeded or when the value drops below the switching point minus
hysteresis. The switch state of the electronics is indicated by an LED.

Time / t

Display
bar (°C)

Hysteresis

LED on

Time / t

Display
bar (°C)

Switchpoint

Hysteresis

LED on

Hysteresis

Window point

LED on

Flow

Flow

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Filter
The filter function "Filt" generates the sliding average value from the measured
values. The following values are available (see section 6.2 Settings):

1 / 2 / 4 / 8 / 16 / 32 / 64

The filter value determines the dynamic behaviour of the indicated value: high
values result in a slow display response. The filter is disabled if a filter value of "1"
is selected. In other words, the indicated value is equal to the unfiltered measured
value.

The integrated step detector responds to a measured-value step change greater
than approximately 6.25% of the upper range value. When a measured-value
step change is detected, the actual measured value is displayed immediately.

Contact Model
The function of the transistor switching output is set in menu item "Con, Co1 or
Co2". The switching function switches from
no - N/O contact to
nc - N/C to
Fr – frequency (Con and Co1 only and

for sensors with impulse

output)
and back.
N/O contact means: contact closes when switching point is exceeded
N/C means: contact opens when switching point is exceeded
Frequency means: frequency output synchronized with vane frequency

Current output

The current output is selected in menu items
"S-C" Start current indicated value < > 0(4) mA
"E-C" End current indicated value < > 20 mA
"SCS" Start current selection (0-20 mA or 4-20 mA).
The indicated value at which 0(4) mA flow is entered in menu item Start current.
The indicated value at which 20 mA flow is entered in menu item End current.

Change Code

The change code option "CCo" secures the unit against unauthorised tempering.
If the code is different from 000, the user must input the code immediately after
entering the adjustment mode.

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5. Maintenance

Work on the electronics should only be carried out by the supplier, otherwise the
guarantee is nullified.

6. Technical Information

Display: 3-segment LED
Display case: stainless steel
Analogue output: (0)4 - 20 mA scalable (...C34 only)
Transistor output: 1 (2) semiconductor PNP or NPN,
set at the factory.
Frequency output: 1 transistor output
vane frequency (see sensor)
Max. switching current: 300 mA
Function: N/C / N/O contact programmable
Setting: with 2 buttons
Supply: 24 V

DC ±20%, 3-wire technology

Electrical connection: plug connector M12x1