CS Instruments VA 520 User manual

VA 520 Bi directional English V1.21 Page 1 of 45
EN –English
Instruction manual
Consumption counter VA 520
for bi-directional measurements
Stationary
Flow and consumption measurement for compressed air and gases

Foreword
VA 520 EN V1.21 page 2o 45
I. Foreword
Dear customer,
thank you very much for deciding in favour of the VA 520. Please read this
installation and operation manual carefully before mounting and initiating the device
and follow our advice. A riskless operation and a correct functioning of the
VA 520 are only guaranteed in case of careful observation of the described
instructions and notes
Sales Office South / Geschäftsstelle Süd
Zindelsteiner Str. 15
D-78052 VS-Tannheim
Tel.: [phone]
Fax: [phone]
Mail: [email protected]
Web: http://www.cs-instruments.com
Sales Office North / Geschäftsstelle Nord
Gewerbehof 14
D-24955 Harrislee
Tel.: [phone]
Fax: [phone]
Mail: [email protected]
Web: http://www.cs-instruments.com

Table of Content
VA 520 Bi directional English V1.21 Page 3 of 45
II. Table of Contents
I. Foreword ....................................................................................................................... 2
1Intended use.................................................................................................................. 5
2Instruments description............................................................................................... 5
3Safety instructions........................................................................................................ 6
4Technical data............................................................................................................... 7
5Scaling Analogue output Comprssed Air................................................................... 8
6Installation Description ................................................................................................ 9
6.1 Pipe/tube requirements ......................................................................................................... 9
6.2 Inlet / outlet runs .................................................................................................................... 9
6.3 Installation of VA 520.......................................................................................................... 10
6.4 Displayhead Position........................................................................................................... 10
7Flow measuring ranges...............................................................................................11
7.1 Flow for different gases....................................................................................................... 11
8Dimensions ..................................................................................................................12
8.1 With measurement section and screw-in thread.............................................................. 12
8.2 With measurement section and flange (Material stainless steel 1.4404):...................... 13
9Electrical wiring ...........................................................................................................14
9.1 Modbus RTU, 4…20mA, Pulse or MBus ............................................................................ 14
9.2 Connection diagrams .......................................................................................................... 15
9.2.1 Modbus............................................................................................................................ 15
9.2.2 Analogue output (4-20mA, Pulse).................................................................................... 15
9.2.3 MBus................................................................................................................................ 15
9.2.4 Ethernet (optional PoE) .................................................................................................. 16

Table of Content
VA 520 EN V1.21 page 4o 45
10 Operation...................................................................................................................17
10.1 Initialization .......................................................................................................................... 18
10.2 Main menu ............................................................................................................................ 18
10.3 Settings................................................................................................................................. 20
10.3.1 Sensor Setup................................................................................................................... 21
10.3.1.1 Input / change tube diameter.................................................................................... 21
10.3.1.2 Input / change consumption counter ........................................................................ 22
10.3.1.3 Definition of the units for flow, velocity, temperature and pressure ......................... 23
10.3.1.4 Advanced settings .................................................................................................... 24
10.3.1.4.1 Definition of the reference conditions................................................................... 24
10.3.1.4.2 Time setting for filtering ........................................................................................ 26
10.3.1.5 Setting of Zeropoint and Low-flow cut off................................................................. 27
10.3.2 Modbus settings............................................................................................................... 28
10.3.2.1 Modbus RTU Setup.................................................................................................. 28
10.3.2.2 Modbus TCP (Optional)............................................................................................ 29
10.3.2.2.1 Network Setup DHCP........................................................................................... 29
10.3.2.2.2 Network Settings static IP..................................................................................... 30
10.3.2.2.3 Modbus TCP Settings........................................................................................... 31
10.3.2.3 Modbus Settings register (2001…2005)................................................................. 32
10.3.2.4 Modbus Values Register (1001 …1500) .................................................................. 33
10.3.3 Pulse /Alarm..................................................................................................................... 35
10.3.3.1 Pulse output.............................................................................................................. 35
10.3.4 User Setup....................................................................................................................... 36
10.3.4.1 Password.................................................................................................................. 36
10.3.4.2 Language.................................................................................................................. 36
10.3.4.3 Display / Touch......................................................................................................... 37
10.3.5 Advanced......................................................................................................................... 37
10.3.6 4 -20mA ........................................................................................................................... 38
10.3.7 VA 520 Info...................................................................................................................... 40
10.4 MBus...................................................................................................................................... 41
10.4.1 Default Settings communication...................................................................................... 41
10.4.2 Default values transmitted ............................................................................................... 41
11 Status / Error messages...........................................................................................42
11.1 Status messages.................................................................................................................. 42
11.2 Error messages.................................................................................................................... 43
12 Maintenance..............................................................................................................44
13 Cleaning of the sensor head....................................................................................44
14 Re-Calibration...........................................................................................................44
15 Spare parts and repair..............................................................................................44
16 Calibration.................................................................................................................44
17 Warranty....................................................................................................................44

Intended Use
VA 520 Bi directional English V1.21 Page 5 of 45
1 Intended use
The VA 520 consumption sensor for bi-directional measurements is used for continuous flow
measurement in both directions.
The VA 520 consumption sensor for bi-directional measurements is designed and constructed
exclusively for the intended purpose described here and may only be used accordingly.
The user must check whether the instrument is suitable for the selected application. It must be
ensured that the medium is compatible with the wetted parts. The technical data listed in the data
sheet are binding.
Improper handling or operation outside the technical specifications is not permitted. Claims of any kind
based on improper use are excluded.
Operating principle:
The VA 520 consumption probe operates according to the calorimetric measuring method.
The basis of this measuring method is the electrical heating of the mechanically protected built-in
sensor. The mass flow, the volume flow and the flow velocity can be measured and determined by the
resulting heat flow to the passing medium (gas).
With the calorimetric measurement method (based on the measurement principle), the operating
temperature and pressure of the medium have no influence on the measurement result, only the
material data of the gas component are decisive.
The integrated flow direction recognition allows the bi-directional flow measurement with display of the
flow values. The flow direction is indicated by arrows in blue and green.
A meter reading is available for each flow direction, displayed in the colours blue and green according
to flow direction.
2Instruments description
The VA 520 is a compact consumption counter for compressed air and gases.
Special features:
•Optimum accuracy due to compact design
•Intgrated Display showing Flow, consuption, velocity and temperature for two
directions
•Input inner tube diameter via display keys
•Units free selectable. m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm
•Modbus RTU (RS485) Interface, Ethernet( also PoE) and MBus optional
•2x Analogoutput 4..20mA
•2x Pulse output galv. isolated.
CS Instruments Service Software
•Analogaoutput 4...20 mA scaleabler
•Selection of gas type (Air, Nitrogen, Argon, Nitrous oxide, CO2, Oxygen, Natural gas)
•Read out Service data
•Sensordiagnoses

Safety instructions
VA 520 Bi directional English V1.21 Page 6 of 45
3 Safety instructions
Read this manual carefully before installing the VA 520. If the instructions
given in this manual, in particular the safety instructions, are not observed,
this may result in hazards for people, equipment and plants
Please read carefully before starting the device!
Warning: Do not exceed the pressure range of 16 bar!
Observe the measuring range of the sensor!
The screwed fixture must be pressure tight.
It is absolutely necessary to avoid condensation on the sensor element or water drops in the
measuring air as they may cause faulty measuring results.
The manufacturer cannot be held liable for any damage which occurs as a result of non-
observance or non-compliance with these instructions. Should the device be tampered with
in any manner other than a procedure which is described and specified in the manual, the
warranty is cancelled and the manufacturer is exempt from liability.
The device is destined exclusively for the described application.
We offer no guarantee for the suitability for any other purpose and are not liable for errors
which may have slipped into this operation manual. We are also not liable for consequential
damage resulting from the delivery, capability or use of this device.
We offer you to take back the instruments of the instruments family VA 520 which you would
like to dispose of.
Qualified employees from the measurement and control technology branch should only carry
out adjustments and calibrations.
Flammable gases
If this consumption sensor is used for measurement of flammable gases (e. g. natural gas
and so on) we expressly would like to point out that the sensor has no DVGW admission,
however, it can be used for measurements in natural gas. A DVGW admission is not
mandatory.
The consumption sensor corresponds with the current state of technology and basically it can be used
in any flammable and non-flammable gases.
If the sensor is used e.g. in the medium natural gas, the sensor will be adjusted for natural
gas. The calibration protocol (inspection certificate) will be included in the scope of delivery.
The area outside the pipeline (ambient area of the sensor) must not be an explosive area.
The installation has to be carried out by authorized professionals.
!

Technical data
VA 520 Bi directional English V1.21 Page 7 of 45
4Technical data
Measurement: Flow and consumption
Reference Standard: Standard settings ex works:
DIN 1945, ISO 1217 at 20°C and 1000 mbar
Selectable Units m³/h (Standard settings ex works)
m³/min, l/min, l/s, ft/min, cfm, m/s, kg/h, kg/min, kg/s, °C, °F
Measuring principle: calorimetric measurement
Sensor: Pt45, Pt1000
Measuring medium: Air, gases
Operating temperature: -30 ... 80°C probe tube
-20 ... 70°C housing
Operating pressure: up to 16 bar, special version PN 40 (40 bar)
Power supply: 18 to 36 VDC
Power consumption: max. 5W
Digital output: RS 485 (Modbus RTU)
Optional Ethernet (also PoE) and MBus
Analog output: 4...20 mA (see chapter 4), max. burden < 500 Ohm
Pulse output: pulse outputs potential free (dry contact)
passive: max. 48Vdc, 150mA
1 pulse pro m³ resp. pro l,
Valency adjustable with the display keys
Accuracy: ± 1,5 % m.v., ± 0,3 % f. s.*
Display: TFT 1.8 Resolution 220 x 176
Mounting thread: R 1/4", R1/2", R3/4", R1", R 1 1/4" R1 1/2", R 2” DIN EN
10226 (ISO 7-1)
Material: Stainless steel 1.4301 / 1.4404
Version with flange DIN EN 1092-1: Stainless steel 1.4404
Protection calss: IP65
* m.v. = measured values
f.s. = full scale

Scaling Analogue output
VA 520 Bi directional English V1.21 Page 8 of 45
5Scaling Analogue output Comprssed Air
Reference DIN1945/ ISO 1217: 20°C, 1000 mbar (Reference during calibration)
Description
Version
Analogue output
VA 520 with integrated 1/4" meas. section
Low Speed
4… 20 mA =
0...25 l/min
Standard
0...50 l/min
Max
0...105 l/min
High Speed
0...130 l/min
VA 520 with integrated 1/2" meas. section
Low Speed
4… 20 mA =
0...20 m³/h
Standard
0...45 m³/h
Max
0...90 m³/h
High Speed
0...110 m³/h
VA 520 with integrated 3/4" meas. section
Low Speed
4… 20 mA =
0...45 m³/h
Standard
0...85 m³/h
Max
0...175 m³/h
High Speed
0...215 m³/h
VA 520 with integrated 1" meas. section
Low Speed
4… 20 mA =
0...75 m³/h
Standard
0...145 m³/h
Max
0...290 m³/h
High Speed
0...355 m³/h
VA 520 with integrated 1 1/4" meas.
section
Low Speed
4… 20 mA =
0...140 m³/h
Standard
0...265 m³/h
Max
0...530 m³/h
High Speed
0...640 m³/h
VA 520 with integrated 1 1/2" meas.
section
Low Speed
4… 20 mA =
0...195 m³/h
Standard
0...365 m³/h
Max
0...730 m³/h
High Speed
0...885 m³/h
VA 520 with integrated 2" meas. section
Low Speed
4… 20 mA =
0...320 m³/h
Standard
0...600 m³/h
Max
0…1195m³/h
High Speed
0...1450 m³/h
VA 520 with integrated 2 1/2" meas.
section
Low Speed
4… 20 mA =
0...550 m³/h
Standard
0...1025 m³/h
Max
0…2050m³/h
High Speed
0...2480 m³/h
VA 520 with integrated 3" meas. section
Low Speed
4… 20 mA =
0...765 m³/h
Standard
0...1420 m³/h
Max
0…2840m³/h
High Speed
0...3440 m³/h

Installation
VA 520 Bi directional English V1.21 Page 9 of 45
6Installation Description
6.1 Pipe/tube requirements
•Correctly sized gaskets
•Correct aligned flanges and gaskets
•Diameter mismatch at the pipe junctions should be avoided but must be less than 1mm. For
further information see ISO 14511
•Ensure clean pipes after installation
6.2 Inlet / outlet runs
The principle of thermal Mass flow measurement is very sensitive against disturbances. Therefore, it is
necessary to ensure the recommended inlet and outlet runs.
Table of additionally required inlet sections
Flow obstruction in front of the
measuring section
Minimum length inlet
section (L1)
Minimum length
outlet section (L2)
Slight curve
(bend < 90°)
12 x D
5 x D
Reduction
(pipe narrows towards the meas. section)
15 x D
5 x D
Expansion
(pipe expands towards the meas. section)
15 x D
5 x D
90° bend
or T-piece
15 x D
5 x D
2 bends á 90°
on one level
20 x D
5 x D
2 bends á 90°
3-dimensional change of direction
35 x D
5 x D
Shut-off valve
45 x D
5 x D
15 x D 5 x D
15 x D 5 x D15 x D
15 x D 5 x D
20 x D 5 x D
35 x D 5 x D
5 x D45 x D
The respective minimum values required are indicated here. If it is not possible to observe the
stipulated equalising sections, considerable deviations in the measuring results must be expected.
Attention:
The dimensions of the VA 520 consumption counter measuring sections do not fullfill the required
minimum lengths of the input and outlet runs.
Please ensure recommended in - and outlet distances, dimensions for measuring sections see page
12 and 13.

Installation
VA 520 EN V1.21 page 10 o 45
6.3 Installation of VA 520
The sensor VA 520 is pre-supplied with the measuring section.
An installation at customer site is only allowed in the unpressurized state of the
system
The connecting nut is tightened to a torque of 25 -30 Nm.
Tightness of the connection must be checked and ensured.
6.4 Displayhead Position
Fastening screws
The Position of the Displayhead is twistable by 180 e.g. in
case of reverse flow direction.
For this purpose the 6 fastening screws are to be released
and the displayhead rotated 180°.
Caution:
It must be ensured that the connection plugs are still plugged
and the gasket is installed correctly.

Measuring ranges
VA 520 Bi directional English V1.21 Page 11 of 45
7Flow measuring ranges
7.1 Flow for different gases
1/4"
1/2"
3/4"
1"
1 ¼"
1 ½"
2"
2 ½"
3"
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
Analog
output
20mA
l/min
[m³/h]
[m³/h]
[m³/h]
[m³/h]
[m³/h]
[m³/h]
[m³/h]
[m³/h]
Reference DIN1945/ ISO 1217: 20°C, 1000 mbar (Reference during calibration)
Air
Low Speed
25
20
45
75
140
195
320
550
765
Standard
50
45
85
145
265
365
600
1025
1420
Max
105
90
175
290
530
730
1195
2050
2840
High Speed
130
110
215
355
640
885
1450
2480
3440
Adjustment to DIN 1343: 0°C, 1013,25 mbar
Air
Low Speed
25
20
40
70
130
180
295
505
705
Standard
50
40
80
135
240
335
550
945
1305
Max
100
80
160
270
485
670
1100
1885
2610
High Speed
120
100
195
325
590
815
1330
2280
3165
Argon
(Ar)
Low Speed
45
35
75
120
220
305
505
865
1200
Standard
85
70
135
230
415
570
935
1605
2225
Max
170
140
275
460
830
1140
1870
3205
4440
High Speed
205
170
335
555
1005
1385
2265
3880
5380
Carbon dioxide
(CO2)
Low Speed
25
20
45
75
140
195
320
545
760
Standard
50
45
85
145
260
360
590
1015
1405
Max
105
90
175
290
525
720
1185
2030
2810
High Speed
130
105
210
350
635
875
1430
2455
3405
Nitrogen
(N2)
Low Speed
25
20
40
70
130
180
295
505
705
Standard
50
40
80
135
240
335
550
945
1305
Max
100
80
160
270
485
670
1100
1885
2610
High Speed
120
100
195
325
590
815
1330
2280
3165
Oxygen f
(O2)
Low Speed
25
20
45
75
135
185
305
525
730
Standard
50
40
80
140
250
345
570
980
1355
Max
100
85
165
280
505
695
1140
1955
2710
High Speed
125
105
205
340
610
845
1380
2365
3280
Nitrous oxide
(N2O)
Low Speed
25
20
45
75
140
190
315
540
750
Standard
50
40
85
140
260
355
585
1005
1395
Max
105
85
170
285
520
715
1170
2010
2785
High Speed
125
105
210
345
630
865
1420
2435
3375
Natural gas
(NG)
Low Speed
15
15
25
45
85
115
190
325
450
Standard
30
25
50
85
155
215
355
605
840
Max
60
50
105
170
310
430
705
1210
1680
High Speed
75
65
125
210
380
520
855
1465
2035
Other gases on request
Please note:
The consumption sensor corresponds with the current state of technology and basically it can be used
in any flammable and non-flammable gases.
If this consumption sensor is used for measurement of flammable gases (e.g. natural gas and so on)
we expressly would like to point out that the sensor has no DVGW admission, however, it can be used
for measurements in natural gas. A DVGW admission is not mandatory.
The area outside the pipeline (ambient area of the sensor) must not be an explosive area.

Dimensions
VA 520 Bi directional English V1.21 Page 12 of 45
8Dimensions
8.1 With measurement section and screw-in thread
A
A
L1 L
ØAD
ØID
H1
H
76,5 75,0
Pipe size
AD / ID
(mm)
L
(mm)
L1
(mm)
H
(mm)
H1
(mm)
R
A
(mm)
VA 520 1/4"
DN 8
13,7 / 8,5
194
137
176,6
166,3
R 1/4"
15
VA 520 1/2“
DN 15
21,3 / 16,1
300
210
177,0
166,3
R 1/2“
20
VA 520 3/4“
DN 20
26,9 / 21,7
475
275
179,8
166,3
R 3/4“
20
VA 520 1“
DN 25
33,7 / 27,3
475
275
183,2
166,3
R 1“
25
VA 520 1 1/4"
DN 32
42,4 / 36,0
475
275
187,5
166,3
R 1 1/4"
25
VA 520 1 1/2“
DN 40
48,3 / 41,9
475
275
190,5
166,3
R 1 1/2“
25
VA 520 2“
DN 50
60,3 / 53,1
475
275
196,5
166,3
R 2“
30

Dimensions
VA 520 EN V1.21 page 13 o 45
8.2 With measurement section and flange (Material stainless steel 1.4404):
Flange DIN EN 1092-1
Pipe size
AD/ID
(mm)
L
(mm)
L1
(mm)
H
(mm)
H1
(mm)
Ø D
in mm
Ø K
in mm
nxØL
in mm
VA 520 1/2“
DN 15
21,3 / 16,1
300
210
213,8
166,3
95
65
4 x 14
VA 520 3/4“
DN 20
26,9 / 21,7
475
275
218,8
166,3
105
75
4 x 14
VA 520 1“
DN 25
33,7 / 27,3
475
275
223,8
166,3
115
85
4 x 14
VA 520 1 1/4"
DN 32
42,4 / 36,0
475
275
263,3
166,3
140
100
4 x 18
VA 520 1 1/2“
DN 40
48,3 / 41,9
475
275
2 40,7
166,3
150
110
4 x 18
VA 520 2“
DN 50
60,3 / 53,1
475
275
248,2
166,3
165
125
4 x 18
VA 520 2 1/2“
DN 65
76,1 / 68,9
475
275
268,2
175,7
185
145
8 x 18
VA 520 3“
DN 80
88,9 / 80,9
475
275
275,7
175,7
200
160
8 x 18

Electrical wiring
VA 520 Bi directional English V1.21 Page 14 of 45
9Electrical wiring
9.1 Modbus RTU, 4…20mA, Pulse or MBus
Attention: Not required connections NC must not be connected to a voltage and/or to protection
earth. Cut and insulate cables.
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Connector plug A
+VB
RS 485 (A)
RS 485 (+)
-VB
RS 485 (B)
RS 485 (-)
I+ (Ch1)
4..20 mA
Connector plug B
Pulse output (standard)
I+ (Ch2)
4..20 mA
Pulse (Ch2)
galv. isolated
Pulse (Ch2)
gavl. isolated
Pulse (Ch1)
galv. isolated
Pulse (Ch1)
gavl. isolated
Connector plug B
Option MBus
NC
GND
DIR
MBus
MBus
Colours pulse cables
0553 0106 (5 m)
0553.0107 (10 m)
brown
white
blue
black
grey
Legend:
-VB
Negative supply voltage 0 V
Pulse
Pulse for consumption
+VB
Positive supply voltage 18...36 VDC smoothed
NC
Must not be connected to a voltage
and/or to protection earth. Please cut
and isolate cables.
I +
Current signal 4...20 mA –selected measured
signal
RS 485 (A)
RS 485 (B)
Modbus RTU A / Modbus RTU (+)
Modbus RTU B / Modbus RTU (-)
MBus
MBus (reverse polarity protected)
If no connection cable/ pulse
cable is ordered the sensor will
be supplied with a M12
connector plug. The user can
connect the supply and signal
cables as indicated in the
connection diagram.
.
M12 Connector plug
View from back side
(terminal side)
- Connector plug A
- Connector plug B

Dimensions
VA 520 EN V1.21 page 15 o 45
9.2 Connection diagrams
9.2.1 Modbus
Connector plug A (M12 - A-coding)
3
4
5
1
2
+ VB
- VB
Blau / Blue
Weiss / White
Schwarz / Black
Modbus (B)
Modbus (A)
Braun / Brown
Remark: If the sensor is placed at the end of the Modbus system a termination is required. The sensors have an
internal switchable termination, therefore the 6 fastening screws from the lid are to be released and set
the internal DIP Switch to “On”. It must be ensured that the connection plugs are still plugged and the
gasket is installed correctly.
Alternatively, a 120R resistor can be installed in the plug between pin 2 and pin 4.
9.2.2 Analogue output (4-20mA, Pulse)
Connector plug A (M12 A-coding) Connector plug B (M12 A-coding)
3
4
5
1
2
+ VB
- VB
4 … 20mA
+ -
Grau / Grey
Blau / Blue
Braun / Brown
4 … 20mA
+
-
3
4
5
1
2
Grau / Grey
Blau / Blue
Weiss / White
Schwarz / Black
Braun / Brown
Pulse CH1
Pulse CH2
Channel 2
Channel 1
9.2.3 MBus
Connector plug A (M12 A-coding) Connector plug B (M12 A-coding)
3
4
5
1
2
Blau / Blue
Grau / Grey
Schwarz / Black MBus
MBus
3
4
5
1
2
+ VB
- VB
Blau / Blue
Braun / Brown

Dimensions
VA 520 EN V1.21 page 16 o 45
9.2.4 Ethernet (optional PoE)
Connector plug B Connection cable
M12 x-coded 8 pole M12 x-coded to RJ45
Data LINES: 1,2 und 3,4
PoE LINES: 5,6 und 7,8
2
81
3
5 4
6
7
M12 x 1
Connection cable: Cat 6.
*PoE: Power over Ethernet
- Connector plug A
- Connector plug B (M12 X-coded 8 pole)

Operation
VA 520 Bi directional English V1.21 Page 17 of 45
10 Operation
“Up“ ( ) “OK“ ( )
The operation of the VA 520 is done by the two capacitive key buttons Up () and Enter ()

Operation
VA 520 EN V1.21 page 18 o 45
10.1 Initialization
10.2 Main menu
HW Version Modbus Id Page No
SW Version
Gas /
Status Info
0.000
Switching to pages 2-5 or back by pressing key „“
After switching on the VA 520, the initialized
screen is displayed followed by the main
menu.
0.0
Counter Direction green
Counter direction blue
Total counter
Actual flow

Operation
VA 520 EN V1.21 page 19 o 45
AV-Time ( Period for average value calculation) could be changed under Sensor Setup.-Advanced–AV-Time
Flow direction blue ( Average, max. Value)
Flow direction green( Average, max. Value)
Total counter
Velocity. Direction blue (Average, max. Value)
Velocity. Direction green (Average, max. Value)
Temperature Medium (actual and min. vaslue)
Temperature Medium (Average and max. value)
8177

Operation
VA 520 EN V1.21 page 20 o 45
10.3 Settings
The settings menu could accessed by pressing the key „OK“.
But the access to the settings menu is password protected.
Selection of a menu item or to change a value
is done with the key „“,a final move to the
chosen menu item or takeover of the value
change needs the confirmation by pressing the
key „OK“
Factory settings for password at the time of
delivery: 0000 (4 times zero).
If required the password could be changed at
Setup–User setup-Password.
.