Schmidt MD 10.015 User manual

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SCHMIDT®LED Measured Value Display
MD 10.015
Instructions for Use

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 2
SCHMIDT®LED Measured Value Display
MD 10.015
Table of Contents
1Important Information ......................................................................3
2Application range.............................................................................4
3Mounting instructions.......................................................................4
4Electrical connection........................................................................6
5Operating modes.............................................................................8
6Signalizations ..................................................................................9
7Startup...........................................................................................10
8Configuration menu.......................................................................18
9Service information........................................................................24
10 Technical data ...............................................................................25
11 Declarations of conformity.............................................................26
Imprint:
Copyright 2022 SCHMIDT Technology GmbH
All rights reserved
Version: 531011.02D
Subject to modifications

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 3
1 Important Information
These instructions for use contain all required information for a fast com-
missioning and a safe operation of SCHMIDT®LED measured value dis-
plays:
These instructions for use must be read completely and observed care-
fully, before putting the unit into operation.
Any claims under the manufacturer's liability for damage resulting from
non-observance or non-compliance with these instructions will become
void.
Tampering with the device in any way whatsoever - with the exception
of the designated use and the operations described in these instruc-
tions for use - will forfeit any warranty and exclude any liability.
The unit is designed exclusively for the use described below (refer to
chapter 2). In particular, it is not designed for direct or indirect protec-
tion of personal or machinery.
SCHMIDT Technology cannot give any warranty as to its suitabilityfor
certain purpose and cannot be held liable for accidental or sequential
damage in connection with the delivery, performance or use of this unit.
Symbols used in this manual
The symbols used in this manual are explained in the following section.
Danger warnings and safety instructions. Read carefully!
Non-observance of these instructions may lead to injury of per-
sonal or malfunction of the device.
High voltage hazard –risk of life.
ESD susceptible elements (electrostatic discharge).
General note
All dimensions are indicated in mm.
!

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 4
2 Application range
The SCHMIDT®LED Measured Value Display MD 10.015 (article no.:
527330 and 528250) is used to display measured values which are trans-
mitted by up to two sensors via an analog signal (current or voltage).
The supply voltage of the sensors can be obtained from the LED display.
The sum function is used to determine the flow volume. In bidirectional
mode, a bidirectional flow signal can be generated from two unidirectional
flow sensors. Switching points for two alarm outputs can be derived from
the input signals and the quantity. The galvanically isolated analog output
allows the scalable output of the display values.
The SCHMIDT® LED Measured Value Display MD 10.015 can be used
for SCHMIDT® flow sensors as well as for other sensors (e.g. pressure,
temperature, humidity) which are equipped with standard analog outputs.
The SCHMIDT® LED Measured Value Display MD 10.015 is designed
for the use inside closed rooms and is not suitable for outdoor use (risk of
condensation on electronic parts). Moreover, the use in safety relevant
applications are not allowed.
3 Mounting instructions
Dimensions
Figure 1: Dimensions of housing
134
106
100
90
100
90
60
27 30
6,3 4,9
max. 120

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 5
Mounting
Typically, the MD 10.015 is fixed to a wall by means of four screws (pattern
of drilling see Figure 1).
Alternatively, SCHMIDT Technology offers a mounting kit that enables
an easy installation of the device at pipes using hose clamps (article no.
531394).
Generally, please make sure that there is enough space (ca. 11 cm) to
raise the upper part of the opened housing in order to establish electrical
connection.
Lateral compression fittings
After installation of the measured value display, the compression fittings
(included in delivery) can be mounted instead of the dummy plugs, if re-
quired.
Opening of housing
To establish electrical connection, the housing must be opened.
For this, loose the four screws of the housing completely. After that, the
screws should be pulled out as far as possible and fixed with another left
turn in the lid so that they do not block the opening of the lid.
Inside the open housing, some components that are susceptible to ESD
are not protected against unintentional contact. Though the terminals are
resistant to ESD, the other touchable parts of the electronic system (e.g.
cover board with configuration jumpers, see Figure 3) are susceptible.
Take respective protective measures to avoid damages due to
electrostatic discharge (ESD).
During electrical installation, ensure that no voltage is applied
and inadvertent activation is not possible.
!

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 6
4 Electrical connection
The model 527330 uses low voltage (115 / 230 VAC).
If used improperly danger of life!
During electrical installation, ensure that no voltage is applied
and inadvertent activation is not possible.
Only trained and qualified personnel must carry out the electri-
cal installation.
Figure 2: Terminals
Terminal
Designation
Function
1 - 3
Relay 1
Alarm output 1 (max. 250 VAC / 5 A)
4
Sensor 1 In-
Analog input 1: GND1
5
Sensor 1 In+
Analog input 1: Sensor signal (set jumper Ch.1 for
configuration of signal modus)
6
Sensor 1 24V -
Supply voltage of sensor 1: GND
7
Sensor 1 24V+
Supply voltage of sensor 1: +24 VDC
8
Sensor 2 In-
Analog input 2: GND
9
Sensor 2 In+
Analog input 2: Sensor signal (set jumper Ch.2 for
configuration of signal modus)
10
Sensor 2 24V -
Supply voltage of sensor 2: GND
11
Sensor 2 24V+
Supply voltage of sensor 2: +24 VDC
12
Analog Out -
AGND (galvanically isolated from GND)
13
Analog Out+
Analog output (galvanically isolated)
14 - 15
Supply voltage display
Version DC: (14) +24V, (15) GND
Version AC: (14), (15)
16 - 18
Relay 2
Alarm output 2 (max. 250 VAC / 5 A)
Table 1: Pin assignment
The screwless spring terminals are designed for the reception of bare
braids (no tinned ends or vein sleeves) of up to 1.5 mm2.
1
The potential "GND" is internally electrically coupled (but not "AGND").
!
!

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 7
Operating voltage
For proper operation, the MD 10.015 requires depending of its version:
Material No. 527330: 85 … 250 VAC / 50 … 60 Hz
Material No. 528250: 23 … 29 VDC
Only operate the measured value display within the defined op-
erating voltage range and type.
The product can be destroyed; in worst case, life is in danger.
Supply voltage for sensor
The display provides a voltage source for the supply of a sensor (or even
several sensors). The supplied voltage USensor is nominal 24 VDC, its tol-
erance is type depending:
Material No. 527330: 𝑈𝑆𝑒𝑛𝑠𝑜𝑟 =24 𝑉 ± 15 %
Material No. 528250
2
: 𝑈𝑆𝑒𝑛𝑠𝑜𝑟 = 𝑈𝑂𝑝𝑒𝑟𝑎𝑡𝑖𝑛𝑔_𝐷𝑖𝑠𝑝𝑙𝑎𝑦 − (1.2 𝑉 + 25 Ω ∙ 𝐼𝑆𝑒𝑛𝑠𝑜𝑟)
The load current ISensor is limited to 160 mA.
Analog inputs
The jumpers in the housing cover set the analog inputs of the display to
the desired signal mode (current or voltage).
If the bridge is placed on the left contact pins (Voltage) a voltage signal is
expected. If the plug connects the right pair of pins (Current), a current
signal must be active.
Figure 3: Jumper in housing cover for selecting signal mode
The input resistance is mode dependent:
Current mode: RIN = 200 
Voltage mode: RIN = 12.5 k
2
Supply voltage of display is connected through, with a series diode & resistance of 25 .
!

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 8
Analog output
The analog output of the MD 10.015 is galvanically isolated from its own
energy supply and the sensor supply (pin 13: Analog Out+; pin 12: Analog
Out–≙AGND; see Figure 2).
When using the display version with DC supply, the mass of the analog
output (AGND) can be connected to that of the operating voltage (GND).
However, the galvanic isolation is lost and a possible mass offset in the
connecting cable can lead to a distortion of the output signal.
When using the display version with AC supply, the analog output must
not be in contact with the supply voltage under any circumstances.
The load resistance RLhas to be connected to AGND:
Current mode: RL≤400 
Voltage mode: RL≥1 k
In the configuration menu, beginning of signalization range without (0 mA
or 0 V) or with offset (signal transmitting zero point: 4 mA) can be selected.
5 Operating modes
The LED measured value display can be operated in three different modes
(parameter in configuration menu: “Selection of operating mode”).
Standard mode
In standard mode (setting: ) up to two sensor signals can be configured
independently of each other. The volume quantitiy can be determined from
the measured value of “Sensor 1”or the sum as well as the difference of
both sensor flow velocity signals.
Bidirectional modes
The SCHMIDT®LED Measured Value Display MD 10.015 and two uni-
directional SCHMIDT®chamber head flow sensors can be used in addition
to determine flow direction as well as flow volume from both directions.
The two sensors must be installed in the same tube at a distance of 10
times of the inner tube diameter and at an angle of 180° towards each
other (see Figure 4).
Flows in measuring direction of “Sensor 1”are evaluated by the measured
value display as positive flows.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 9
Figure 4: Bidirectional measurement
The measured value display can be configured for two measurement ver-
sions in bidirectional mode:
Version 1 (setting ): Positive and negative flows are displayed. To de-
termine the quantity, the positive flows are summed up and negative flows
are subtracted.
Version 2 (setting ): Positive flows are displayed, negative flows are
suppressed. For determination of quantity, only positive flows are used.
6 Signalizations
Main display
Initially, the main display (see Figure 5) shows the status of the device:
Main display
State

Initialization of measured value display
Duration approx. 5 s (after switch-on of supply voltage)

Key lock activated

Error message from “Sensor 1”

Error message from “Sensor 2”
Flashing
Displayable range exceeded or undercut
Table 2 Initial status reports
Analog output
If one of the connected sensors indicates an error, the analog output of
the MD 10.015 will also signal an error:
Signal range without offset (0 ... 20 mA / 0 ... 10 V):
In current mode the interface outputs 0 mA.
In voltage mode the output switches to 0 V.
Signal range with offset (4 ... 20 mA):
The interface outputs 2 mA.
Sensor 1
Sensor 2
Positive flow
Supply
Negative flow
Return
10 x inner tube diameter

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 10
7 Startup
Before switching on the SCHMIDT®Measured Value Display MD 10.015,
check whether the device is intact as well as installed correctly, both me-
chanically and electrically.
If the display is in the correct operational state, it is ready for operation
approx. 5 seconds after switching on the supply voltage.
Operating and display elements
Figure 5: Operating and display elements
The labels included in the delivery can be glued to the unit field to indi-
cate the desired measuring unit (e.g. m/s, m³/h ...) of the main display.
Standard mode
After a successful initialization phase, the MD 10.015 enters its standard
operation mode as “Measured value display” (see Figure 5).
The main display shows the actual standard measurement value, the sta-
tus of the alarm outputs are depicted in the auxiliary display (see Table 3).
Main display:
- Standard: Meas. value
- Menu: Parameter
Auxiliary display:
- Standard: Status of
alarm outputs
- Menu: Identification of
the selected
menu items
Arrow key up

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 11
Auxiliary display
State

Alarm output 1: Not activated
Alarm output 2: Not activated

Alarm output 1: Activated
Alarm output 2: Not activated

Alarm output 1: Not activated
Alarm output 2: Activated

Alarm output 1: Activated
Alarm output 2: Activated
Table 3 Alarm indication
Handling
The device can be operated by means of two different menus which are
activated from standard mode using the parameter key :
Shortly press the parameter key to open the display menu.
In this menu, the actual measured values of “Sensor 1”and “Sensor
2”, the quantity, the stored peaks (minimum and maximum) of the
standard value as well as the switching points of the alarm outputs can
be sequentially displayed by further pressing of the parameter key.
If the key isn’t pressed for more than 2 minutes, the device returns
automatically to standard mode.
If the parameter key is pressed for more than 2 seconds, the configu-
ration menu opens.
It can be used to configure both measuring inputs (sensor signals), bi-
directional mode, calculation of volume flow and quantity, the analog
output and both alarm outputs (details see chapter 8).
The menu items are selected sequentially by using the parameter key
(short press). The settings of the currently selected menu item can be
modified using the arrow keys ( ).
The configuration menu is closed after the last menu item or, if no key
is pressed for more than two minutes, it is exited automatically. It can
also be quitted at any time by pressing the parameter key for a longer
time (more than 2 seconds).
Table 4 shows an overview of the presentation and meaning of the differ-
ent menu items.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 12
Example application 1 –step by step
A flow sensor (meas. ranges: wN= 0 ... 60 m/s and TM= -40 … +85 °C;
both output signals: 4 … 20 mA) is installed into a tube with DN 50.
Using the measured flow velocity wN, the volume flow shall be calculated
as primary value (in m³/h), and the flow quantity as a further result (in m3).
Furthermore the medium temperature TMof the sensor is recorded, both
measured values are unfiltered.
The analog output of the display shall use 4 … 20 mA to signal a scaled
volume flow in m³/h: 4 mA = 0 m³/h and 20 mA = 200 m³/h.
In addition, a switching signal, delayed by 5 seconds is required as soon
as 150 m³/h are exceeded, the hysteresis is 1 m3/h.
- Determination of the maximum volume flow based on the maximum flow
velocity and the (inner) pipe diameter: 60 m/s ≙ 343 m3/h
Available from the sensor’s instruction manual or by means of the
SCHMIDT®flow calculator:
www.schmidt-sensors.com/stroemungsrechner/volumenstrom-geschwindigkeit.html
- Install LED display at desired position
- Plug both jumpers for “current measurement”in housing cover
- Connect supply of sensor to LED display
- Connect analog outputs of sensor to LED display (analog output flow:
“sensor 1”; analog output temperature: “Sensor 2”)
- Connect analog output and relay output 1 of LED display
- Connect supply voltage of LED display and close its housing
- After switching on the supply voltage:
Initialization, followed by indication of an “unconfigured” measurement
value on the main display
Call-up configuration menu by pushing for 2 seconds
Auxiliary
display
Main
display
Description


Operating mode: Standard (only one flow sensor)


Main display: Measuring value of input “Sensor 1”


Averaging of measurement values: Deactivated
Configuration of analog input 1


Signal mode: 4 ... 20 mA (volume flow)

.
Accuracy of indication: 1 decimal

.
Start value: 0 m³/h (≙4 mA)

.
End value: 343 m³/h (≙20 mA)

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 13
Auxiliary
display
Main
display
Description
Configuration of analog input 2


Signal mode: 4 ... 20 mA (temperature TM)

.
Accuracy of indication: 1 decimal

.
Start value: -40 °C (≙4 mA)

.
End value: +85 °C (≙20 mA)
Configuration of volume quantity


Summation: Measuring value “Sensor 1”


Time base: Hour (unit m³/h)

.
Deadzone: 0.1 % of final measuring value (here:
0.343 m²/h) will not be added

.
Accuracy of indication: 2 decimals
Configuration of alarm output 1


Signal source: Measuring value of “Sensor 1”


Switching mode: Active when exceeding switching point

.
Switching point: 150 m³/h

.
Switching hysteresis: 1 m³/h
(relais drops out when falling below 149 m³/h)

..
Response delay: 5 s

..
Release delay: 5 s
Configuration of alarm output 2


Alarm output: Deactivated
Configuration of analog output


Signal source: Measuring value of “Sensor 1”


Signal mode: 4 ... 20 mA

.
Start value: 0 m³/h (≙4 mA)

.
End value: 200 m³/h (≙20 mA)


Control panel lock: Deactivated
After the final menu item, the configuration menu is left automatically for
changing to the main display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 14
Verification of indication values in display menu (short press of )
Auxiliary
display
Main
display
Description

.
Main display (standard measurement value): 12.8 m3/h

.
Actual measured value of “Sensor 1”: 12.8 m3/h

.
Actual measured value of “Sensor 2”: 23.9 °C

.
Actual volume quantitiy: 0.2 m3
Reset to 0 by using for approx. 5 s

.
Actual raw value “Sensor 1”: 4.597 mA

.
Actual raw value “Sensor 2”: 12.179 mA

.
Peak-value memory:
- Maximum measured value of parameter that is selected
for main display: 45.8 m3/h
- Deletion of all maximum peak values of sensor by
using for approx. 5 s

.
Peak-value memory:
- Minimum peak value of parameter that is selected for main
display: 1.8 m3/h
- Deletion of all minimum peak values of sensor by
using for approx. 5 s

.
Switching point of alarm output 1: 150 m3/h


Alarm output 2: Deactivated
After the final menu item, the dispaly menu is left automatically for chang-
ing to the main display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 15
Example application 2 –step by step
In a circular pipeline with DN 80 the consumption (m3) has to be measured
with two chamberhead flow sensors (measuring ranges: 0 … 60 m/s, an-
alog outputs: 4… 20 mA) according to Figure 4. Exceeding a flow volume
of 100,000 m³ shall be signalized by alarm output 1 without delays, using
a hysteresis of 15 m3. The complete volume flow range that can be meas-
ured, from maximum negative to maximum positive values, should be sig-
naled at the display’s analog output in mode “current interface with offset”.
- Determination of volume flow measuring range: 60 m/s ≙920 m³/h
Available from the sensor’s instruction manual or by means of the
SCHMIDT®flow calculator:
www.schmidt-sensors.com/stroemungsrechner/volumenstrom-geschwindigkeit.html
- Install LED display in required position
- Plug both jumper for “current measurement”in housing cover
- Install Sensor 1 and 2 according to Figure 4 in circular tube system
- Connect voltage supply of both sensors to LED display
- Connect analog flow outputs (wN) of both sensors to LED display
- Connect analog output and relay output 1 of LED display
- Connect current supply of LED display and close its housing
- After switching on the supply voltage:
Initialization followed by indication of an “unconfigured” main value
Call-up configuration menu by pushing for 2 seconds
Auxiliary
display
Main
display
Description


Operating mode: Bidirectional (both directions are counting)


Main display measurent value: Flow volume (m3)


Averaging of measurement values: Deactivated
Configuration analog input 1


Signal mode: 4 ... 20 mA

.
Accuracy of indication: 2 decimals

.
Start value: 0 m³/h (≙4 mA)

.
End value: 920 m³/h (≙20 mA)
Configuration analog input 2


Signal mode: 4 ... 20 mA

.
Accuracy of indication: 2 decimals

.
Start value: 0 m³/h (≙4 mA)

.
End value: 920 m³/h (≙20 mA)

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 16
Auxiliary
display
Main
display
Description
Configuration volume measurement


Time base: Hour (unit m³/h)

.
Neutral zone (dead zone):
If a flow is indicated without any flow rate, a false volume
measurement can be prevented using a neutral zone.
A neutral zone of 0.5 % corresponds to 4.6 m³/h in case
of a measuring range of 920 m³/h.
A volume flow < 4.6 m³/h is not considered in volume
measurement.

.
The maximum volume shall be indicated on the 6-digit
display => without any positions after the decimal point,
there is the largest possible measuring range.
Configuration alarm output 1


Signal source: Flow volume (m3)


Switching mode: Active when exceeding switching point


Switching point: 100,000 m³


Switching hysteresis: 15 m³
(relais drops out when falling below 99,985 m³)

..
Response delay: None

..
Release delay: None
Configuration alarm output 2


Alarm output: Deactivated
Configuration analog output


Signal source: Flow volume (m3/h)


Signal mode: 4 ... 20 mA

.
Start value: -920 m³/h (≙4 mA)

.
End value: +920 m³/h (≙20 mA)


Control panel lock: Deactivated
After the final menu item the configuration menu is left automatically for
changing to the main display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 17
Verification of indication values in display menu (short press of )
Auxiliary
display
Main
display
Description


Main display measurement (standard) value: 1,280 m3

.
Bidirectional signal (volume flow): 250.80 m3/h


Actual quantity: 1,280 m3
Reset to 0 by using for approx. 5 s

.
Actual raw value “Sensor 1”: 8.362 mA

.
Actual raw value “Sensor 2”: 13.232 mA


Peak-value memory:
- Maximum value of parameter that is selected for main
display: 1,280 m3
- Deletion of all maximum peak values by using
for approx. 5 s


Peak-value memory:
- Minimum value of parameter that is selected for main
display: 18 m3
- Deletion of all mimimum peak values by using
for approx. 5 s


Switching point of alarm output 1: 100,000 m3


Alarm output 2: Deactivated
After the final menu item, the dispaly menu is left automatically for
changing to the main display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 18
8 Configuration menu
Information regarding the display
Menu item is only displayed if the respective
configuration is selected
Flow diagram
Call-up of configuration menu


Selection of operating mode:
(“Standard”) /
(“Bidirectional”) /
 (“Bidirectional”, only positive direction)
Modification by pressing arrow keys


Selection of input parameter for main display:
(measured value “Sensor 1”) /
(measured value “Sensor 2”) /
 (operating mode “Bidirectional”)
(flow volume, quantity)
Modification by pressing arrow keys


Averaging of (both) input signals:
 / ./ ., ... .(s)
Modification by pressing arrow keys


Selection of signal mode “Sensor 1”:
 (mA) / (V) / (mA)
Modification by pressing arrow keys 
.

Decimal places of measured value “Sensor 1”:
. /./. /. /.
Modification by pressing arrow keys
2 s

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 19
.

Start value for measuring range “Sensor 1”:
(e.g.: 0 ... 200 m³/h → 0)
Modification by pressing arrow keys
.

End value for measuring range “Sensor 1”:
(e.g.: 0 ... 200 m³/h → 200)
Modification by pressing arrow keys


Selection of signal mode “Sensor 2”:
 /  (mA) / (V) / (mA)
Modification by pressing arrow keys 
.

Decimal places of measured value “Sensor 2”:
. /./. /. /.
(Only if input “Sensor 2” is activated)
Modification by pressing arrow keys
.

Start value for measuring range “Sensor 2”:
(e.g.: -40 ... +85 °C → -40.00)
(Only if input “Sensor 2” is activated)
Modification by pressing arrow keys
.

End value for the measuring range of “Sensor 2”:
(e.g.: -40 ... +85 °C → 85.00)
(Only if input “Sensor 2” is activated)
Modification by pressing arrow keys


Signal from which the volume will be calculated:
 (measured value “Sensor 1”)/
 (difference: “Sensor 1”–“Sensor 2”)/
 (sum: “Sensor 1”+ “Sensor 2”)
(not available in operating mode “Bidirectional”)
Modification by pressing arrow keys

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.015 Page 20


Time base unit for flow volume measurement:
(second) / (minute) / (hour)
Modification by pressing arrow keys
.

Neutral zone “Sensor 1”:
….(% of measuring range)
Values within the neutral zone are not used for calculation
of measuring volume
(only available in operating mode “Standard”)
Modification by pressing arrow keys
.

Neutral zone “Sensor 2”:
….(% of measuring range)
Values within the neutral zone are not used for calculation
of measuring volume
(only available if the measured value of “Sensor 2”are
used for calculation of the volume)
Modification by pressing arrow keys
.

Neutral zone in operating mode “Bidirectional”:
….(% of measuring range)
Values within the neutral zone are not used for calculation
of measuring volume
Modification by pressing arrow keys
.

Number of decimal places of the measured volume:
. /./. /. /.
Setting:
.: Maximum quantity is “9999E9”,
minimum quantity is “-999E9”
Others: Quantity is limited by indication area
Modification by pressing arrow keys