Schmidt MD 10.010 User manual

SCHMIDT®LED Measured Value Display
MD 10.010
Instructions for Use

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 2
SCHMIDT®LED Measured Value Display
MD 10.010
Table of Contents
1Important information.......................................................................3
2Application range.............................................................................4
3Mounting instructions.......................................................................4
4Electrical connection........................................................................6
5Signalizations ..................................................................................8
6Startup.............................................................................................9
7Configuration menu.......................................................................15
8Service information........................................................................19
9Technical data ...............................................................................20
10 Declarations of conformity.............................................................21
Imprint:
Copyright 2022 SCHMIDT Technology GmbH
All rights reserved
Version: 531010.02E
Subject to modifications

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 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 suitability for
certain purpose and cannot be held liable for errors contained in these
instructions for use or for accidental or sequential damage in connec-
tion 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 10.010 Page 4
2 Application range
The SCHMIDT®LED Measured Value Display MD 10.010 (article no.:
527320 and 528240) is used to display measured values which are trans-
mitted by a sensor via an analog signal (current or voltage).
The supply voltage of the sensor can be obtained from the LED display.
Switching points for two alarm outputs can also be derived from the input
signal. The galvanically isolated analog output allows the scalable output
of the display values.
The SCHMIDT® LED Measured Value Display MD 10.010 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 10.010 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 is 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
6.3
4.9

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 5
Mounting
Typically, the MD 10.010 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 (approx. 11 cm)
toraise 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 a further left
turn in the lid so that they cannot slip back and thus 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 jumper, see Figure 3) are susceptible.
Take respective protective measures to avoid damages due to
electrostatic discharge (ESD).
During electrical installation, ensure that no operating voltage is
applied and its inadvertent activation is not possible.
!

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 6
4 Electrical connection
The model 527320 uses low voltage (115 / 230 VAC).
If used improperly danger of life!
During electrical installation ensure that no supply voltage is ap-
plied and inadvertent activation is not possible.
Only trained and qualified personnel must carry out the electrical
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: Sensor signal GND1
5
Sensor 1: In+
Analog input 1: Sensor signal (set jumper for
configuration of signal modus)
6
Sensor 1: 24V -
Supply voltage of sensor: GND
7
Sensor 1: 24V+
Supply voltage of sensor: +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 10.010 Page 7
Operating voltage
For proper operation, the MD 10.010 requires depending of its version:
Material No. 527320: 85 … 250 VAC / 50 … 60 Hz
Material No. 528240: 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 measurement display provides a voltage source for the supply of a
sensor (or even several sensors). The supplied voltage USensor is nominal
24 VDC, its tolerance is type depending:
Material No. 527320: 𝑈𝑆𝑒𝑛𝑠𝑜𝑟 =24 𝑉 ± 15 %
Material No. 528240
2
: 𝑈𝑆𝑒𝑛𝑠𝑜𝑟 = 𝑈𝑂𝑝𝑒𝑟𝑎𝑡𝑖𝑛𝑔_𝐷𝑖𝑠𝑝𝑙𝑎𝑦 − (1.2 𝑉 + 25 Ω ∙ 𝐼𝑆𝑒𝑛𝑠𝑜𝑟)
The load current ISensor is limited to 160 mA.
Analog input
The jumper in the housing cover (see Figure 3) selects the signal charac-
teristic (mode) of the analog input of the display (current or voltage).
If the bridge is placed on the left contact pin pair (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 input 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 10.010 Page 8
Analog output
The analog output of the MD 10.010 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 (24 V), 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 Signalizations
Main display
Initially, the main display (see Figure 4) 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
Flashing
Displayable range exceeded or undercut
Table 2 Initial status reports
Analog output
If the connected sensor indicates an error, the analog output of the display
MD 10.010 will also signal an error:
Signal area 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 area with offset (4 ... 20 mA):
The interface outputs 2 mA.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 9
6 Startup
Before switching on the SCHMIDT®Measured Value Display MD 10.010,
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 4: Operating and display elements
The labels included in the delivery can be attached to the unit field to in-
dicate the desired measuring unit (e.g. m/s, m³/h ...) of the main display.
Standard mode
After a successful initialization phase, the MD 10.010 enters its standard
operation mode as “Measured value display” (see Figure 4).
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 10.010 Page 10
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”, the stored
peak values (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 the measuring input (sensor signal), both
alarm outputs and the analog output (details see chapter 7).
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 in the auxiliary display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 11
Example application 1 –step by step
With a flow sensor (measuring range: 40 m/s; output signal: 4 ... 20 mA)
the flow velocity shall be indicated in m/s. The analog output of the display
shall signal a scaled measuring range from 1 m/s (≙4 mA) up to 20 m/s
(≙20 mA). If the flow velocity exceeds 15 m/s an alarm signal is issued
over relay 1, without hysteresis or delays.
- Install LED display at desired position
- Plug jumper in housing cover for “current measurement”
- Connect supply voltage of sensor to LED display
- Connect analog output of sensor to LED display
- 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


Averaging of measuring value: Deactivated
Configuration of analog input


Signal mode: 4 ... 20 mA

.
Accuracy of indication: 2 decimals

.
Start value: 0 m/s (≙4 mA)

.
End value: 40 m/s (≙20 mA)
Configuration of alarm output 1


Alarm output: Activated


Switching mode: Active when exceeding

.
Switching point: 15 m/s

.
Switching hysteresis: 0 m/s

..
Response delay: 0 s

..
Release delay: 0 s
Configuration of alarm output 2


Alarm output: Deactivated

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 12
Auxiliary
display
Main
display
Description
Configuration of analog output


Analog output: Activated


Signal mode: 4 ... 20 mA

.
Start value: 1 m/s (≙4 mA)

.
End value: 20 m/s (≙20 mA)


Control panel lock: Deactivated
After the final menu item, the configuration menu is left automatically going
back to the main display.
Verification of indication values in display menu (short press of )
Auxiliary
display
Main
display
Description

.
Actual measured value of sensor: 12.80 m/s

.
Actual raw signal value of sensor : 9.120 mA

.
Peak-value memory:
- Maximum measured value of sensor: 35.80 m/s
- Deletion of stored value by using for approx. 5 s

.
Peak-value memory:
- Minimal measured value of sensor. 1.80 m/s
- Deletion of stored value by using for approx. 5 s

.
Switching point of alarm output A1: 15.00 m/s


Alarm output A2: Deactivated
After the final menu item, the display menu is left automatically going back
to the main display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 13
Example application 2 –step by step
A flow sensor (measuring range: 60 m/s; output signal: 4 … 20 mA) is
installed into a tube with DN 50. Using the unfiltered measurement value
of flow velocity wN, the volume flow shall be calculated and displayed as
primary value (in m³/h).
The analog output of the display shall use 4 … 20 mA to signal a scaled
volume flow: 4 mA ≙0 m³/h and 20 mA ≙200 m³/h.
In addition, a switching signal, delayed by 30 seconds is required as soon
as 150 m³/h are exceeded, the hysteresis is 10 m3/h.
- Determination of the maximum volume flow based on the maximum
flow velocity and the 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 in desired position
- Plug jumper in housing cover for “current measurement”
- Connect supply voltage of sensor to LED display
- Connect analog output of sensor to LED display
- 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 of configuration menu by pushing for 2 seconds
Auxiliary
display
Main
display
Description


Averaging of measurement value: Deactivated
Configuration of analog input


Signal mode: 4 ... 20 mA

.
Accuracy of indication: 1 decimal

.
Start value: 0 m³/h (≙ 4 mA )

.
End value: 343 m³/h (≙ 20 mA )
Configuration of alarm output 1


Alarm output: Activated


Switching mode: Active when exceeding

.
Switching point: 150 m³/h

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 14
Auxiliary
display
Main
display
Description

.
Switching hysteresis: 10 m³/h
(relay declines in case of a decrease below 140 m3/h)

..
Response delay: 30 s

..
Release delay: 30 s
Configuration of alarm output 2


Alarm output: Deactivated
Configuration of analog output


Analog output: Activated


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 going
back to the main display.
Verification of indication value on display menu (short press of )
Auxiliary
display
Main
display
Description

.
Actual measured value of sensor: 120.8 m³/h

.
Actual raw signal of sensor: 9.635 mA

.
Peak-value memory:
- Maximum measured value of sensor: 305.0 m³/h
- Deletion of stored value by using for approx. 5 s

.
Peak-value memory:
- Minimum measured value of sensor: 10.7 m³/h
- Deletion of stored value by using for approx. 5 s

.
Switching point of alarm output A1: 150.0 m3/h


Alarm output A2: Deactivated
After the final menu item, the display menu is left automatically going back
to the main display.

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 15
7 Configuration menu
Information regarding presentation
Menu item is only displayed if the respective
configuration is selected
Flow diagram
Call-up of configuration menu


Averaging of input signal:
 / ./ ./ ... / .(s)
Modification by pressing arrow keys


Selection of input signal characteristic:
 (mA) / (V) / (mA)
Modification by pressing arrow keys 
.

Number of decimal places of measured value:
. /./. /. /.
Modification by pressing arrow keys
.

Start value of measuring range of sensor:
(e.g.: 0 ... 20 m/s → 0)
Modification by pressing arrow keys
.

End value of measuring range of sensor:
(e.g.: 0 ... 20 m/s → 20)
Modification by pressing arrow keys


Activation of alarm output 1:
 / 
Modification by pressing arrow keys
2 s

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 16


Switching behaviour of alarm output 1:
(switches when switching point is exeeded) /
(switches when dropping below switching point)
Modification by pressing arrow keys
.

Switching point of alarm output 1:
Modification by pressing arrow keys
.

Hysteresis of alarm output 1 (four digits):
Modification by pressing arrow keys
..

Response delay of alarm output 1:
.. ... ..(h.mm.ss)
Modification by pressing arrow keys
..

Release delay of alarm output 1:
.. ... ..(h.mm.ss)
Modification by pressing arrow keys


Configuration of alarm output 2:
Identical to alarm output 1 (menu items:  …)


Activation of analog output:
 / 
Modification by pressing arrow keys


Signal mode of analog output:
 (mA) / (V) / (mA)
Modification by pressing arrow keys

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 17
.

Start value for displayed range of analog output:
Number of decimal places is defined by configuration of
the reference signal for main display (menu item )
Modification by pressing arrow keys
.

End value for displayed range of analog output:
Number of decimal places is defined by configuration of
the reference signal for main display (menu item )
Modification by pressing arrow keys


Key lock:
 / 
Modifications in configuration menu as well as reset of
peak value memory are locked
Modification by pressing arrow keys , even if “key lock”is
active
.

Return to main display

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 18
Menu overview
The following Table 4 shows the representation of all possible menu items
in the auxiliary display (see Figure 4).
Auxiliary
display
Display / parameter

Indication main display: Actual measured value [m/s, m3/h, °C …]

Indication display menu: Switching point of alarm output 1

Indication display menu: Switching point of alarm output 2

Decimals of input signal

End value of input signal

End value of output signal

Value averaging

Operation lock

Signal mode of input signal

Signal mode of analog output

Indication display menu: Minimum measured peak value

Activation of analog output

Indication display menu: Maximum measured peak value

Indication display menu: Raw value of input signal

Start value of input signal

Start value of analog output

Indication display menu: Activation of alarm output 1

Switching behaviour of alarm output 1

Indication display menu: Switching point of alarm output 1

Hysteresis of alarm output 1

Response delay of alarm output 1

Release delay of alarm output 1

Indication display menu: Activation alarm of output 2

Switching behaviour of alarm output 2

Indication display menu: Switching point of alarm output 2

Hysteresis of alarm output 2

Response delay of alarm output 2

Release delay of alarm output 2
Table 4

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 19
8 Service information
Eliminating malfunctions
The following Table 5 lists possible errors (error images).
A description of the way to detect errors is given. Furthermore, the possi-
ble causes and measures to be taken to eliminate errors are listed.
Error image
Possible causes
Troubleshooting
Displays off &
analog output to zero
Supply voltage UB:
No UBpresent
UB(DC) wrong polarity
UB too low
LED Display defective
Supply voltage:
Check if connected cor-
rectly to power supply
Check voltage type
(DC, AC)
Check if there is supply
voltage at the terminal
(cable break)
Measuring range too large
/ small
Incorrect configuration of
sensor's measuring range
Check if analog measured
value is correct ()
Check configuration of
start () and end value
() of sensor's measur-
ing range
Analog measuring value
() too large / small
Jumper of signal mode ana-
log input
Set jumper according
signal mode
Input configuration
Check input configuration
() according to input
signal
Analog signal too large /
small
Output configuration
Check configuration
Unexpected values at
alarm output
Configuration alarm output
Check configuration
Table 5

Instructions for Use –SCHMIDT®LED Measured Value Display MD 10.010 Page 20
9 Technical data
Technical data
Displays
Main display: 7-segments LED red; 14.2 mm; 6 digits
Sub display: 7-segments LED red; 7 mm; 2 digits
Input signal
Current: 0 / 4 … 20 mA (RIN = 200 Ω)
Voltage: 0 … 10 V (RIN = 12,5 kΩ)
Analog output
Galvanically isolated, short-circuit protected
Permissible load resistance RLin signal mode:
Voltage3(0 … 10 V): RL ≥1 kΩ
Current (0 / 4 … 20 mA): RL ≤400 Ω
Accuracy of analog output
±0.2 % of measured value
Relay outputs
2 x relay with changeover contacts (SPDT, potential-free)
Max. 250 VAC / 5 A
Voltage supply for sensor
Short-circuit protected; current limited to max. 160 mA
Mat.-no. 527320: 24 VDC ± 15 %
Mat.-no. 5282404: See “Supply voltage for sensor”(p. 7)
Supply voltage of display
Mat. no. 527320: 85 … 250 VAC / 50 ... 60 Hz
Mat. no. 528240: 23 … 29 VDC
Power consumption of display
Max. 8 VA
Operating temperature
-20 … +60 °C
Storage/transport temperature
-40 … +70 °C
Environmental conditions
Up to 95 % RH (non-condensing)
Connection
14 x spring clamps, bare braid, Ø ≤ 1.5 mm²
4 x compression fittings
Operating position
Arbitrary
Ingress protection
IP65 (housing and screw connections tightly sealed)
Protection class
II (touch proofed)
Housing material
Polyamide, glass-fibre reinforced (PA6-GF 15/15),
colour similar to RAL 7001
Weight
Approx. 370 g
Table 6
3
Current limited
4
Supply voltage of display is connected through, with a series diode & resistance of 25 .