vse IO.flow User manual

Operating instructions

TABLE OF CONTENTS
Page
With the publication of these operating instructions, all information from previous publi-
cations becomes invalid. VSE reserves the right to make changes and deviations. VSE
accepts no liability for possible printing errors. Reproductions, including excerpts, are
only permitted with the written consent of VSE. VSE reserves the right to make technical
changes at any time. Status: 02/2023
1. Important information and legal notices ...............................3
2. Features ...........................................................4
3. Technical data ......................................................4
Electrical operating conditions ................................................4
Signal input specifications (flowmeter) ..........................................5
IO-link specification .........................................................5
Identification data of the device ...............................................6
Mechanical properties .......................................................6
4. Connection data ....................................................7
5. Initial setup ........................................................8
Example configuration .......................................................9
Data-storage mechanism (device replacement) ..................................9
6. Advanced features .................................................10
Linearization ..............................................................10
Frequency filter ............................................................11
Pulse filter function..........................................................11
Change of flow direction ....................................................11
Encoder properties – number of channels ......................................12
Peak flowrate monitoring ....................................................12
7. Events ............................................................12
Limits .....................................................................12
Flow monitoring............................................................12
Standstill detection .........................................................12
Negative flow detection.....................................................13
Maintenance and diagnostic data ............................................13
8. Errors ............................................................14
9. Parameter description..............................................14
Process data structure.......................................................14
Process data in ............................................................15
Process data out ...........................................................15
Device parameters .........................................................16
System commands..........................................................22
10. Revision history ...................................................23
11. Manufacturer declaration...........................................24

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1. IMPORTANT INFORMATION AND LEGAL NOTICES
Dear customer, dear user,
This operating instruction for the IO-Link converter „IO.flow®by VSE Volumentechnik GmbH (VSE) contains information
required to properly install and commission the device for the intended purpose.
Any installation, commissioning, operation, maintenance and testing may only be carried out by trained and authorized
personnel. The operating instructions must be read and followed carefully to ensure a trouble-free, proper and safe
operation of the device. In particular, the safety instructions are essential.
These operating instructions must be kept safe and accessible for the authorized personnel at all times. At no time
should contents of the operating instructions be removed. A missing manual or missing pages must be replaced im-
mediately if lost. The operating instructions can be requested at any time from VSE or downloaded from our website
www.vse-flow.com. The operating instructions must be passed on to each subsequent user of the IO-Link converter
„IO.flow®“.
This operating instruction is not subject to any modification service by VSE. VSE reserves the right to make technical
changes at any time without notice.
VSE makes no warranties, express or implied, with respect to commercial qualities and suitability for a particular
purpose.
VSE accepts no liability for damage and malfunctions resulting from operating errors, failure to observe these opera-
ting instructions, improper installation, commissioning or maintenance as well as improper use of the IO-Link converter
„IO.flow®“.
The opening of the IO-Link converter „IO.flow®“is absolutely not permitted. After an unauthorized opening or rebuil-
ding as well as after a single, incorrect connection of the flow circuits of the device, the warranty as well as the product
liability by VSE expire.
Operating manual–no.: E18-07-38-005 Vers. e

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The IO-Flow®Converter enables uncomplicated integration of all VSE
flow sensors into IO Link systems. The signals of the preamplifier are
measured by the module and converted into the desired unit so that
they are available to the IO-Link master or the programmable logic
controller (PLC) for direct further processing.
The compact module is connected „in-line“ between the flow meter
and the evaluation system. This means that it is integrated into the exis-
ting cabling with an additional M12 extension cable and thus repre-
sents a signal converter. The IO-Link protocol enables simultaneous
transmission of the process data volume and flow in the appropriate
unit, together with diagnostic and statistical data. Parameters can be
changed during operation or adapted to another flow sensor. In addi-
tion, integrated signal processing allows filtering and linearization of
the volume sensor‘s measured values.
Electrical operating conditions
2. FEATURES
3. TECHNICAL DATA
Main features:
• Accurate frequency measurement and volume counting
• Configurable signal filters (dynamic / smoothed / precise)
• Integrated calculation functions:
• Unit conversion (pulses, volume, mass)
• Linearization of flow and volume (20 linearization points)
• Recording of statistical data for maintenance notifications
• Data backup on power off
• Configurable events for flow monitoring (limit values, invalid states)
• Teach-in function for parameterization in the field
• Error messages
• Support for data storage for easy exchange of devices
• Two-channel SIO mode for quadrature signals (optional)
Parameter Symbol Value Unit Notes
Operating voltage Ub18 – 30 V Unenn = 24 V
Operating current IO-Link Mode Ib,IOL 15 mA at Ub= 24 V
Operating current SIO-Mode Ib,SIO 5mA at Ub= 24 V
Max. ambient temperature Tmax 50 °C
Burst (EN 61000-4-4) 2 kV Criterion A, 5/100 kHz
ESD (EN 61000-4-2) ±4 / ±8 kV Criterion B, contact and air
discharge
Conducted immunity
(EN 61000-4-6) 150 kHz - 80 MHz Criterion A, U0=10V
Radiated immunity EN 61000-4-3 80 Mhz - 6 GHz Criterion A, E0= 6 -10 V/m
Radiated emissions EN 55016-2-3 30 MHz - 1 GHz
Table 1: Operating conditions (electrical)

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The module uses a communication rate of 230,4 kBaud (COM3). The
IODD is compatible with the specification version V1.1 and can be
found in the download area of our homepage.
www.vse-flow.com/en/downloads
IO-link specification
Signal input specifications (flowmeter)
Parameter Symbol Value Unit Notes
Operating voltage (flowmeter) UVS UbVSame as operating voltage Ub
Max. allowed current consumption
(flowmeter) IVS,max < 200 mA Power supply dependent
Maximum input frequency
(IO-Link Mode) fmax,IO 125 kHz
Maximum input frequency
(SIO-Modus) fmax,SIO 250 kHz IO-Link Wakeup-Request only possible up
to 25 kHz with activated SIO-Passthrough
Measurement accuracy of frequency
(lower range: 10 kHz) er,10k
0.013
0.005
0.014
%
%
%
V_Filter = 2
V_Filter = 1
V_Filter = 0
Measurement accuracy of frequency
(upper range: 100 kHz) er,100k
0.018
0.034
0.300
%
%
%
V_Filter = 2
V_Filter = 1
V_Filter = 0
Settling time of frequency filter
(V_Filter) trise
1000
350
10
ms
V_Filter = 2
V_Filter = 1
V_Filter = 0
Parameter Value Notes
Manufacturer Name VSE Volumentechnik GmbH
Manufacturer ID 1654 HEX: 0x0676
Device Name IO.flow®
Device ID 4900 HEX: 0x1324
Communication rate 230,4 kBaud COM3
Minimum cycle time 1 ms
ISDU
DataStorage
Block Parameter
supported
Preoperate M-Seq. Type TYPE_1_V_8OD 8 byte OD
Operate M-Seq. Type TYPE_2_V_2OD
9 byte PDin,
1 byte PDout,
2 byte OD
M-Seq. Capability 43 HEX: 0x2B
SIO-Mode 2-channel passthrough mode (dependent on V_SIO-Passthrough) Pin 2: QA/Pin 4: QB
Table 2: Operating parameters (Signal input)
Table 3: IODD operating parameters for IO.flow®

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Each IO.flow®converter is equipped with a unique serial number
according to the scheme IO********. It can be found as a lasered
marking on the device’s housing and in digital form in the parameter
V_SerialNumber (Index 0x15). Additionally, the manufacturing date
of the device is stored in the read-only parameter V_MfgDate (0x4F).
If the device is paired/parametrized with a specific flowmeter, there is
a separate label on the back of the device housing. This label contains
the serial number and type of the paired flowmeter.
Identification data of the device
Mechanical properties
Figure 1: Parameter label for the paired flowmeter
Parameter Symbol Value Unit Notes
Length (total) lges 88.5 mm
Length (main body) lmain 60.4 mm
Diameter d25 mm
Weight m68 g
Protection against liquid penetration waterproof With mated connectors1
Table 4: Mechanical properties
1 Performed test: Device immersed in water (50 cm depth) for 30 min. No traces of liquid inside the device.
S/N: IOF1234ABCD
M1
2x1 (male)
60,4
88,5
M12x1 (female)
SW18 Ø25

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Figure 2: Connector specifications and cable assignment
The two 4-pin connectors are compatible with any existing cabling and
enable simple installation of the IO-Link module. Both shielded and
unshielded cables are suitable as connection cables.
The signal output side uses a male M12 connector and connects to the
IO-Link master. On the signal input side there is a female M12 con-
nector which usually connects to a flowmeter or other device with pul-
se signal output. In SIO-mode the pin assignment is identical on both
connectors. The supply voltage, which is connected to pins 1 and 3 of
the male connector, is passed through to the same pins of the female
connector. In IO-Link mode, pin 4 represents the communication line
and pin 2 is pulled to 0 V.
4. CONNECTION DATA
.
.
.
.
12
34
12
3
4
IO-FLOW
Signal input side
(Quadrature signal)
M12
FEMALE
M12
MALE
+24 V (brown)
1
2
3
4
QA (white)
0 V (blue)
C/Q/QB (black)
Signal output side
(IO-Link)

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The male connector of the device is usually connected to the IO-Link
master via a M12 extension cable (male/female). On the signal input
side, the preamplifier of the flowmeter is connected with another
extension cable to the female connector. The maximum cable length for
either side must be below 20 m.
At start-up, the device works in SIO-mode, in which both quadrature
signals of the flowmeter are passed through to the IO-Link side (if SIO-
Passthrough is activated, see page 19). A wake-up request from the
IO-Link master switches the device to IO-Link mode.
Using the IODD (Download → page 5) the device can be added to
the master’s configuration software, where parameters can be adjusted
and process data can be read.
Before using the device, certain parameters must be set. The setting
values depend on the specific flowmeter which is connected on the si-
gnal input side. If a flowmeter is purchased together with an IO.flow®
converter, the pairing process and configuration can be done by VSE.
The following table lists the parameters that are checked for validity.
Relevant parameters should be set when commissioning the device.
5. INITIAL SETUP
Figure 3: Schematic overview of the IO-Link system with a VSE flowmeter and IO.flow®
Note
The IO.flow®converter is unshielded per IO-Link specification. For this reason, the connected flowmeter must be grounded via the
hydraulic piping or using the earth terminal of the flowmeter.

9
The “param error” flag in the process input data will be cleared when
a valid configuration is detected. After a successful configuration of
these parameters, the device status changes to “Device is operating
properly”.
Parameter Index (HEX) Unit Requirement
V_KFactor 0x45 Imp/l KFactor ≥ 1 (V_Unit=Hz)
KFactor > 1 (V_Unit≠Hz)
V_IPF 0x46 IPF > 0
V_Qmax 0x5A l/min Qmax > 0 (V_Unit≠Hz)
V_Lin_enable 0x63 Linenable > 0,
but no lin.-points set
Parameter Description Value
V_FM-SN Flowmeter serial number 060 / 24 / 110
V_FM-Type Flowmeter type VS 0,1/16 GPO 12V-42R11/X
V_CalDate Flowmeter calibration date 21.06.2022 12:00:00
V_Unit Process data unit 1 (volume / unit: litre)
V_KFactor Calibration factor (K-Factor) 160000 Imp/l
V_IPF Interpolation factor 16
V_Qmax Maximum allowed flowrate 10 l/min
V_EncProp Number of input channels 0 (2-channel flowmeter)
Table 5: Parameters with validity check
If the IO.flow®converter is purchased together with a flowmeter, the in-
itial setup is performed by VSE and all necessary parameters regarding
the paired flowmeter are already pre-set.
In case of a separate purchase for retrofitting existing systems, the pa-
rametrization is usually carried out by the customer using an existing
IO-Link master.
If data storage is activated, all parameters that are not affected by the
connected flowmeter are backed up in the IO-Link master. In the event
of a flowmeter defect, a seamless device replacement is thus possible
without manual reconfiguration. This also enables device replacement
with a different type of flow meter. All application-specific settings such
as filter, unit and limit values are restored. After connecting a new con-
verter to the IO-Link master, the data storage download is started, and
the device is ready for use again.
Example configuration
Data-storage mechanism (device replacement)
An example configuration is shown in the following table:
Table 6: Example configuration for a VSE VS 0,1

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Every flowmeter based on the positive displacement principle has a K-
factor which represents its resolution in the unit of pulses per litre. How-
ever, mechanical tolerances, wear and operating conditions, such as
low fluid viscosity, mean that this K-factor is not constant over the entire
flow range. This can result in measurement errors if not taken care of. To
quantify these deviations, a flowmeter can be calibrated. The results of
the calibration can then be used to eliminate the device-specific devi-
ations using a linearization table. Using this mathematical correction,
the measurement error gets eliminated which leads to a higher measu-
rement quality over the entire measuring range.
By entering the linearization data into the IO.flow converter and enab-
ling it via the parameter V_Lin_enable, the measured flow and volume
values will be output as corrected process data values. Depending on
the available calibration data, two modes of linearization can be se-
lected (K-Factor or Flowrate). The linearization table supports up to
twenty entries. All intermediate values will be linearly interpolated.
6. ADVANCED FEATURES
Figure 4: Typical error curve of a positive displacement flowmeter at low fluid viscosity
Figure 5: Linearization principle
Name Index Data type Value = 0 Value = 1 Value = 2
V_Lin_enable 0x63 SingleValue Linearization disabled (gray) f-K table (green) f-Q table
Subindex 1 .. 20
Contains X-coordinates of the linearization points.
This is the measured frequency value that serves as a reference for the corresponding Y-coordinate.
Unit in Hz.
Subindex 1 .. 20
Contains Y-coordinates of the linearization points.
Each coordinate represents the frequency dependent process value
of the attached flowmeter.
Depending on the table type it can contain K-factors or the
actual flowrate values.
f-K-Linearization: Unit in pulses per litre
f-Q-Linearization: Unit in litre per minute
Linearization
Linearization table X
Linearisierungstabelle Y
Error (%) Precision (%)
Flowrate (ml/min)
Flowrate
Frequency