Kracht SD 1 User manual

SD 1
Operating Instructions
Volutronic


Page 2BSD1-xxxP-09.99-GB
1. SAFETY 3
2. DESCRIPTION 4
3. CONNECTING THE SD1 5
3.1 Connecting the voltage supply 5
3.2 Connecting SD1 with rectangular output. 5
3.3 Connecting the SD1 with analog output 6
3.4 Connecting the SD1 with relay contacts. 7
3.5 How is the flow rate measurement activated ? 8
3.6 How is the volume measurement activated ? 9
3.7 Error display 10
4. SD1 PROGRAMMING 11
4.1 Overview of the input values 12
4.2 What must be programmed when connecting a volume counter? 13
4.3 How to change time on flow display ? 15
4.4 How to find out the flow rate? 16
4.5 What must be programmed when connecting the relay outputs ? 17
4.6 What must be programmed when connecting the analogue output ? 18
5. TECHNICAL DATA 19
6. TYPE CODE 20
7. CONNECTIONS 21

BSD1-xxxP-06.99-GB Page 3
1. Safety
The safety notes included in these operating instructions are indicated by
this ‘attention-getter’ symbol.
If the text accompanying this symbol is not heeded, danger to personnel
or equipment may result.
+Other instructions, which are not safety warnings, but which give advice
on optimum operation, are indicated by a hand.
General safety instructions
The electronic SD1 is constructed to the latest standards in technology. The SD1
should be operated only
nin technically sound condition,
nas instructed,
nwith awareness of the safety precautions, following these operating instructions.
The SD1 must only be operated as an item of equipment installed in an internal
area.
The SD1 must only be operated in the prescribed condition.
The stated limiting values (see also section on “Technical Data“) must, under no
circumstances, be exceeded.
Personnel engaged in the installation, operation and maintenance of the SD1 must
be appropriately qualified. This qualification can be obtained by appropriate training
or instruction. Such personnel must be familiar with the contents of these operating
instructions.
During all operations the relevant national regulations relating to safety
precautions in the work place and where applicable, internal regulations of
the operator must be observed, even if these are not detailed in these
operating instructions.
The SD1 must not be operated in hazardous areas, nor in areas where
medical apparatus is in use, nor in areas which are expressly named in
VDE 0411 Part 100.
If the SD1 is used for the control of machines or sequential processes
where damage to the machine or accident to operating personnel is
possible as a consequence of failure or faulty operation of the SD1, then
appropriate safety precautions must be implemented.
+
+
In the case of variations (including those relating to operating behaviour),
which prejudice safety, the SD1 must be switched off immediately.
During installation work on the SD1, the power supply must always be
disconnected. Installation work must only be carried out by appropriately
qualified personnel.

Page 4BSD1-xxxP-09.99-GB
2. Description
The plug-in display unit SD 1 may be used with any KRACHT volume counter which
uses a plug-in connection according to DIN 43650.
The display unit is simply inserted between the plug and the plug socket on the
volume counter. The displayed value will be the actual flow rate. The square wave
signals remains available for external processing.
Volume counters already supplied can be equipped with the plug-in display unit. To
achieve this the amplifier card must be removed from the plug socket.
The plug-in display unit is freely programmable. All necessary settings can be
achieved with two keys. The programmed data is stored on an EEPROM and
therefore saved in case of power failure.
As an option the plug-in display is available with an analogue output (0-20 mA, 4-20
mA) proportional to flow rate. The square wave signal is then not applicable.
The plug-in display unit works with 24 VDC or 12 VAC.
Due to it’s characteristics, possibilities and low costs this instrument will be your first
choice especially for measuring of flow and volume.
Manufacturers address:
KRACHT GmbH
Gewerbestraße 20
58791 Werdohl
Tel. 02392 / 935-0
Fax 02392 / 935209

BSD1-xxxP-06.99-GB Page 5
3. Connecting the SD1
This section deals with the layout of the connections on the SD1. The electrical
connection has to be made by a plug-in connection acc. to DIN 43650.
3.1 Connecting the voltage supply
The SD1 is operated with an voltage of 24 VDC or 12 VDC. The adjustment is
achieved by means of solder jumpers.
The connections are made as follows :
Terminal 1 +24 VDC (brown)
Terminal 2 GND (white)
3.2 Connecting SD1 with rectangular output.
The SD 1 is available in three versions:
- SD1 – R with two rectangular signals with a pulse offset of 90°.
- SD1 – I with analog output (0-20 mA/4-20 mA)
- SD1 – K with relay contact
Connections are different in each version.
Option with rectangular output:
Connection of rectangular output has to be made on clamps.
Terminal 3 Channel 1 (green)
Terminal Channel 2 (yellow)
If the SD1 works with a volume counter, which has 2 sensors, it is a 2-channel
version. The square wave pulses are displaced from one another by 90°. It is
therefore possible to detect the direction. This is referred to as a two channel layout.
If the SD 1 works with a volume counter, which has only 1 sensor, it is a 1-channel
version. Connection on clamp (channel 2) is not necessary.
+Single channel or two channel connection must be set on the SD1. The
settings required are made under menu reference „08“ at the “counter
input” position (see 4.1 overview of the input values).

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3.3 Connecting the SD1 with analog output
The SD1 is available in 3 versions
-SD1-R with two rectangular signals with a pulse offset of 90°,
-SD1-I with analog output (0-20 mA/4-20 mA),
-SD1-K with relay contact.
Connections are different in every serial-model modification.
Option with analog output (0-20mA/4-20 mA):
Connection of analog output has to be made on clamps.
Terminal 3 Analog Output (+) (green)
Terminal 2 GND (white)
+In accordance with the software, the settings 0-20 mA and 4-20 mA are
available for signal selection. The selection is carried out by programming
the SD1 under menu reference “8“ at the “Analogue output“ position. The
functions are set using “0“ or “1“ (see 4.1 Overview of the input values).
How does the analogue output function ?
The function of the analogue output can be freely selected, i.e. it can be assigned to
the measurement parameters of flow rate or volume.
+For adjusting volume-/flow measurement please see chapter 3.5 and 3.6.
A maximum value can be programmed for the analogue output. The maximum value
corresponds to an output of 20 mA.
+The details of programming the maximum value are given in section 4.6
What must be programmed when connecting the analogue output ?

BSD1-xxxP-06.99-GB Page 7
3.4 Connecting the SD1 with relay contacts.
The SD1 is available in 3 models:
-SD1-R with two rectangular signals with a pulse offset of 90°,
-SD1-I with analog output (0-20 mA/4-20 mA),
-SD1-K with relay contact.
Connections are different in every serial-model modification.
Option with relay contact:
The SD1 has two relay contacts. The relay contacts are connected to the supply
potential. That means the contacts switch the supply voltage to external processing.
Connection has to be made on clamps.
The relays are provided with normally-open contacts. The switching
voltage is 30 V, maximum switching current is 1A.
Connection of relay contact has to be made on clamps.
Terminal 3 Relay 1 (green)
Terminal Relay 2 (yellow)
How do the relays operate ?
The function of the relays can be set as required, i.e. each relay can be allocated to
the flow rate or volume measurement parameters.
An on and an off switching value can be programmed for each relay. The relay
switches when the switch-on value is exceeded. When the switch-off value is
undershot, the relay drops out again. The relays can be programmed as normally-
open or normally-closed.
+The programming of the switch-on and switch-off values is given in
section 4.5 What must be programmed when connecting the relay
outputs?.
Wird das SD1 in der Betriebsart Volumenmessung betrieben, entfällt das Relais 2.
+For adjusting volume and flow measurement please see chapter 3.5 and
3.6.

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3.5 How is the flow rate measurement activated ?
+The SD1 can be switched to flow measurement or volume measurement.
This will be made by programming SD1 under menu “7” at step “display”.
The flow rate will be adjusted by “0” and the volume by “1”. (see 4.1 for
overview of input values).
As soon as a medium flows through the volume counter a flow rate indication
appears. No special action is required. The instantaneous flow rate is indicated, as a
rule in litres per minute.
+The SD1 must be adjusted to the actual volume counter that is connected.
The procedure is given in section 4.2 What must be programmed when
connecting a volume counter?

BSD1-xxxP-06.99-GB Page 9
3.6 How is the volume measurement activated ?
+The SD1 can be switched to flow measurement or volume measurement.
This will be made by programming SD1 under menu “7” at step “display”.
The flow rate will be adjusted by “0” and the volume by “1”. (see 4.1 for
overview of input values).
By volumetric measurement is implied the summation of the amount of a medium
which has flowed through a volume counter. As a rule the indication is in litres.
+When the limiting frequency has been passed and a release signal has
been given a summation will be made. To programm limiting frequency
under menu “10” you have to take the volume counter’s impulse
frequency in hertz (Hz). Usually the limiting frequency has to be set to
0.000.
Connection of release signal output has to be made on clamps:
Terminal summation enable (yellow)
+If there is a voltage of 24 V at the enable input, summation of the volume
commences. The measured values on the display change.
If there is a voltage of 0 V at the enable input, summation of the volume is
stopped. The measured values on the display do not change.
When the voltage at the enable input is changed from 0 V to 24 V the
summation is reset to zero. The determination of the volume starts again.

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3.7 Error display
On two channel volume counters it is possible to monitor the correct pulse sequence
on the channels. Faulty pulses are not counted and thus do not change the volume
measurement.
If an error is established by the SD1, the character sequence “FAUL“ appears in the
display.
+The error display can also be completely isolated. This is carried out
under the menu reference “08“ at the “ counter input“ position. The error
display is enabled with a “0” and blocked with a “1” (see 4.1 Overview of
the input values).