Vermes MDS 3010A-FA User manual

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B
I

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B
II
Index
1. Introduction........................................................................................................................................ 5
1.1. Preamble....................................................................................................................................... 5
1.2. Areas of applications..................................................................................................................... 5
1.3. Machining...................................................................................................................................... 6
1.4. Product line MDS 3000................................................................................................................. 6
1.5. List of abbreviations...................................................................................................................... 6
2. Important Information....................................................................................................................... 7
2.1. General ......................................................................................................................................... 7
2.2. Specified normal operation........................................................................................................... 7
2.3. Technical details........................................................................................................................... 7
2.4. Safety instructions......................................................................................................................... 8
2.5. Starting.......................................................................................................................................... 8
2.6. Dispensing medium ...................................................................................................................... 8
3. MDF 3070-FA-cyano-SSI................................................................................................................... 9
3.1. Overview....................................................................................................................................... 9
3.2. Important Information MDF 3070-FA.......................................................................................... 11
3.3. Functional principle..................................................................................................................... 11
4. Adjust and First Drop...................................................................................................................... 12
4.1. Definition Adjust and First Drop.................................................................................................. 12
4.2. Re-adjust the system for the exchange of nozzle insert............................................................. 12
4.3. Positioning of the First Drop ....................................................................................................... 14
4.4. Notice for the Adjust and the performing of the First Drop ......................................................... 16
5. Scope of supply............................................................................................................................... 16
5.1. Standard ..................................................................................................................................... 16
6. Micro Dispensing Valve MDV 3010A and MDV 3020A................................................................. 17
6.1. Technical data MDV 3010A/3020A............................................................................................. 17
6.2. Valve types/Options.................................................................................................................... 17
6.3. Special features MDV 3010A/MDV 3020A................................................................................. 17
6.3.1. Normally closed.................................................................................................................... 17
6.3.2. Quick-Change ...................................................................................................................... 17
6.3.3. Null-set dispensing............................................................................................................... 17
6.3.4. Modularity............................................................................................................................. 17
6.3.5. Position................................................................................................................................. 18
6.3.6. Handling ............................................................................................................................... 18
6.4. Material classification.................................................................................................................. 18
7. Control Unit MDC 3090A-FA........................................................................................................... 18
7.1. Description of the MDC module.................................................................................................. 18
7.2. Technical data MDC 3090A-FA.................................................................................................. 19
7.3. Control panel............................................................................................................................... 19
7.3.1. LC display............................................................................................................................. 19
7.3.2. Function keys....................................................................................................................... 20
7.4. Operation .................................................................................................................................... 20
7.4.1. Input of values...................................................................................................................... 20
7.4.2. Menu structure ..................................................................................................................... 21
7.5. Interfaces .................................................................................................................................... 22
7.5.1. Serial interface: Sub-D, 9-pin............................................................................................... 22
7.5.2. Instruction set for serial interface......................................................................................... 22
7.5.3. Error messages.................................................................................................................... 25
7.5.4. Handling Error 501 Valve Defect.......................................................................................... 25

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B
III
7.5.5. PLC-interface: Sub-D, 15-pin............................................................................................... 26
7.6. Control options............................................................................................................................ 27
7.7. Delay times................................................................................................................................. 28
7.7.1. PLC Trigger Delay................................................................................................................ 28
8. Connection/Mounting...................................................................................................................... 28
8.1. Assembling the valve.................................................................................................................. 28
8.2. Assembling the control unit......................................................................................................... 29
8.3. Electrical connections................................................................................................................. 29
8.4. Fluid box connections................................................................................................................. 29
8.4.1. Cartridge............................................................................................................................... 30
8.4.2. Pressure tank....................................................................................................................... 30
8.5. Shut down................................................................................................................................... 30
8.6. Mounting and demounting the valve........................................................................................... 31
8.6.1. Removal of fluid box (if applicable)...................................................................................... 31
8.6.2. Mounting of the fluid box (e.g. MDF 3070-CC) (if applicable).............................................. 31
8.6.3. MDT 301 Universal Tool ...................................................................................................... 31
9. Cleaning ........................................................................................................................................... 31
9.1. Common details.......................................................................................................................... 31
9.2. Cleaning methods....................................................................................................................... 32
9.3. Compatibility of sealing material (material) with selected fluids ................................................. 33
10. Selected applications explained step by step............................................................................ 34
10.1. Start-up and Dispensing ........................................................................................................... 34
10.2. Change of valve or control unit................................................................................................. 34
10.3. MDC Communicator 2 .............................................................................................................. 35
10.3.1. Introduction......................................................................................................................... 35
10.3.2. Pin setup and protocol ....................................................................................................... 35
10.3.3. Installation .......................................................................................................................... 35
10.4. PLC Interface connection chart ................................................................................................ 36
10.5. CE –Declaration of Conformity................................................................................................ 37

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 5
1. Introduction
1.1. Preamble
By buying a VERMES Micro Dispensing System of the MDS 3000 line you are provided with a
high-quality system manufactured with greatest care.
In this manual you will in general become acquainted with VERMES Microdispensing services and
in detail with the use of your system. We will show you, how easy and simple the start-up and use
of your Micro Dispensing System is.
We kindly ask you to take a close look at this manual before you start operating your system. If
there are any questions about the use of the Micro Dispensing System after having read the
manual, please get in touch with our customer service.
VERMES Microdispensing GmbH
You get us all year round from Monday to Friday 9 a.m. to 5 p.m.
Tel: [phone]
Fax: [phone]
[email protected]
www.vermes.com
Or at all our agencies and partners abroad.
1.2. Areas of applications
Dispensing
Typical examples of high quality and highly dynamic dispensing requirements appear in the area
of pharmaceutics, medicine, and biotechnology. So far, only low viscous media could be
dispensed due to the nozzle and valve technologies being mainly made for the intake and output
of analysis fluids in micro-titter plates.
Micro adhesion
The wide field of adhesives which has become increasingly significant, especially during the past
years, experiences an additional dynamic by the enlargement in the direction of micro-adhesion.
As there have been only time-consuming contact techniques, delivering smallest adhesive drops,
the micro dispensing of adhesive products is accelerated by the elimination of feed motion in z-
direction in terms of high multiplication.
Micro lubrication
In the fine mechanics appliance area, components and devices –for example mechanical clocks
or small gears of hard drives –the exact dispensing of lubricants in micro dispensing techniques
represent a considerable progress to accelerate the production process. In such cases, we talk
about micro lubricating.
Micro marking
In the area of marking technologies in industrial processes the Micro Dispensing System MDS
3000 family is the ideal addition to automated marking within individual processes. The marks are
applied contact less with high speed precisely to mostly extreme small-sized parts.
Special industrial appliances –Micro Dispensing by free jet method
In numerous industrial applications smallest reproducible drops of different media need to be
placed on a target with difficult to reach POD (point of dispensing). This can often only be
processed with a Micro Dispensing System of the MDS 3000 family allowing industrial automation
and sufficient speed and precision.
With the possibility of external triggering a Micro Dispensing System is seamlessly integrated into
almost every superior control system (e.g. PLC).

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 6
1.3. Machining
All components of Micro Dispensing Valves, control units and heating are manufactured by state-
of-the-art production machines and are carefully monitored by most modern measuring
instruments. The long-term experience of VERMES Microdispensing and its staff dealing with
piezo-based electronic actuators and controllers guarantees highest functionality and product
quality.
All components of the MDS 3000 series are subject to extensive final checks following the
manufacturing; furthermore they undergo a thorough cleaning process.
All finished Micro Dispensing System components are bedded dust-proof and protected against
harmful environmental influences.
1.4. Product line MDS 3000
The Micro Dispensing Systems of the MDS 3000 family are composed of various piezo-based
Micro Dispensing Valves (MDV line), a Micro Dispensing Control Unit (MDC line) and optional
supply units (MDX line).
Figure 1: Micro Dispensing System MDS 3000
To cover a wide range of viscosity VERMES Microdispensing developed three different types of
valves which can be used depending on the viscosity of the media.
MDV 3010A: for low viscous fluids (water-like fluids)
MDV 3020A: for medium viscous fluids (e. g. ink, honey-like fluids)
MDV 3200A: for high viscous fluids (e. g. grease, pastes)
1.5. List of abbreviations
Abbreviation
Full Name
NI
Nozzle insert
NU
Nozzle unit
NU-fix
Nozzle unit with fixation
NAN
Nozzle adjustment nut
NAN-fix
Nozzle adjustment nut with fixation
MDC
Micro Dispensing Controller
MDF
Micro Dispensing Fluid box
MDS
Micro Dispensing System
MDV
Micro Dispensing Valve
MDX
Supply unit
POD
Point of Dispensing
PLC
Programmable logic controller
TG
Tappet Guidance
Table 1: Abbreviations

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VTK-VS-BA-002 Revision B 7
2. Important Information
To ensure security the Micro Dispensing System MDS 3000 and its necessary accessories should
only be operated by competent, special trained persons, which have read and understood this
instruction manual and are in good knowledge about the possible dangers.
Each person being involved in the installation or the maintenance of this system has to be
qualified for such jobs.
2.1. General
Please pay attention to the danger and safety data sheets of the liquids to be dispensed.
Wear protective clothing, face protection, glasses and gloves when dispensing aggressive,
reactive or toxic fluids.
Wear protective clothing, face protection, glasses and gloves when dispensing with high supply
pressure.
2.2. Specified normal operation
Additional heating may only be carried out with a heating system by VERMES
Microdispensing.
The Micro Dispensing System MDS 3010A/MDS 3020A can be used in a laboratory or
production environment.
Provided highest frequencies (up to 450 Hz) and parameter settings have to be followed.
The dictated maintenance rates have to be followed.
Please avoid the usage of media which affect the functioning of the Micro Dispensing
System.
2.3. Technical details
The usage of the Micro Dispensing System MDS 3010A/MDS 3020A is only allowed at up
to an elevation of 2000 m above sea level.
Relative humidity: maximum 80 % at 31 °C, decreasing linear until 50 % at 50 °C.
Fluctuation of the line voltage is not allowed over ± 10 % of the nominal voltage.
Transient over voltage according to IEC 60364-4-443 will be tolerated: degree of pollution
II is allowed.
The employed power cords have to be accompanied by a grounding equipment
conductor. The power sockets have to be within safety regulations. When using cables not
supplied by VERMES Microdispensing, the warranty of the Micro Dispensing System
MDS 3010A/MDS 3020A will only range till the operator interface.
During installation and operation attention needs to be paid to sufficient air circulation:
minimum distances above and below the system are 1.5 cm. VERMES Microdispensing
advises a separate housing build according to fire prevention regulation as covered in
EN 61010-1.
During the usage of a heated system, please note, that the tangible surfaces can be hot
and lead to severe burns.
The safety of the apparatus can be affected by using parts/units not advised by VERMES
Microdispensing. The same can be considered for the usage of dangerous substances or
the operation in an explosive environment, for which the Micro Dispensing System MDS
3010A/MDS 3020A is not designed.

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 8
2.4. Safety instructions
Please check whether all fluid box connections are attached and sealed.
Attention!!!
Make sure all connections and connectors are mounted according to instructions and all
components are specified for use with the intended pressure.
Attention!!!
Make sure the supply pressure does not exceed the admissible range (depending on the
configuration either 5 bar or 7 bar).
Attention!!!
Make sure the maximum possible system pressure ranges between the valve limit and the
connection supplies limit –in no case above it.
Attention!!!
Regulate the pressure of your pressure supply before pressure admission.
Attention!!!
Setting the pressure too high is dangerous. EXPLOSION HAZARD!
Please check whether all electrical connections are attached, locked and screwed.
Attention!!!
The triggering of dispensing impulses without connection to the Micro Dispensing Valve may
lead to extreme voltage transients due to the high inductivities. This may ultimately cause a
dangerous flashover voltage and damage the control unit.
Attention!!!
The control unit may only be switched on when a valve is connected to it. Otherwise there will be
damages to the valve and the control unit.
In reference to the security the Micro Dispensing Systems MDS 3010A/MDS 3020A and their
necessary accessories should be used only by competent, special trained persons.
2.5. Starting
Avoid rapid switching between on and off state. The control unit takes time to shut down the
system without voltage.
Attention!!!
Switching the control unit on and off in a fast way may cause damage to the control unit and the
valve. Avoid this kind of fast voltage changes.
In case you get an error during start-up, please refer to chapter 7.5.3.
2.6. Dispensing medium
Before filling up the fluid box system with aggressive fluids, please make sure that all parts
contacting the fluid are resistant against it. In case of doubt please consult our Technical Support.
VERMES Microdispensing GmbH
Palnkamer Straße 18
D-83624 Otterfing
You get us all year round from Monday to Friday 9 a.m. to 5 p.m.
Tel: [phone]
Fax: [phone]
[email protected]
www.vermes.com
Or at all our agencies and partners abroad.

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 9
3. MDF 3070-FA-cyano-SSI
3.1. Overview
This description is showing the MDF 3070-FA-cyano-SSI Fluid Box.
It is also available without Solvent reservoir for processing anaerobe glue.
Figure 2: MDF 3070-FA (front side)
Figure 3: MDF 3070-FA (back side)

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 10
This description is showing the body of the fluid box system:
Picture is showing the Fluid Box mounted to the
valve
Solvent reservoir (used if the dispense material is
cyanoacrylate)
The fluid box removed from the valve
Distance metal plates (in different sizes) to
realize a stable adjust position.
Solvent area
Dispense area
Tappet Sealing
O-Ring 7x1
Tappet Sealing
Screw M2,5x8
Fluid Box mounted on valve complete with:
Cartridge 10 ccm (Material supply)
Hose connection for solvent reservoir (blue)
Solvent (e.g. D-Bonder) screw to refill the reservoir

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 11
3.2. Important Information MDF 3070-FA
Important notes before starting the dispense process.
Attention!!! The System is already pre-assembled and adjusted by VERMES Microdispensing!
Please do not dismount it.
Do not try to re-adjust it, if it is not required to change the nozzle insert.
The MDV calibration and adjust is already done by VERMES Microdispensing.
To start the dispense process please perform the following steps first:
1. Connect the MDC to the MDV (Actuator and sensor cables (red and yellow))
2. Switch on the control unit.
3. Fill in your solvent material (D-Bonder) in the solvent reservoir.
4. Connect the cartridge and flush the dispense level first with D-Bonder material (press the F1
button on the control unit to flush).
5. Now you can perform the first drop for the system:
Please find the detailed explanation “Positioning of first drop”in chapter 4.4.
6. Flush again the dispense level with air to get it clean.
7. Now you can fill in the cyanoacrylate material.
8. Before starting with the process please try to dispense a few thousand shots to remove all of
the remaining D-Bonder.
Please be sure that you have the same supply pressure for the solvent level and the cyano
level!
3.3. Functional principle
The following picture shows the working principle of the cyano system.
Figure 4: The working principle
(cyanoacrylator)
(D-Bonder)

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VTK-VS-BA-002 Revision B 12
4. Adjust and First Drop
The System 3090A-FA has no switch mode functionality. The FA abbreviation stands for Fixed
Adjust.
4.1. Definition Adjust and First Drop
The adjust process is needed to get a precise calibration of the valve stroke and therefore to get a
standardization between different systems.
With this process the nozzle insert is positioned in relation to the tappet. This is essential for the
initial operation or after the change of the nozzle insert. It also may occur that the nozzle insert
moves in mounted condition. This may be caused by external influences like pushing by accident
or during the dispense process.
If the Micro Dispensing Valve is properly adjusted, the green LED lightens up on the front display.
If it is not on, the adjust process has to be executed. Otherwise the dispense result will vary.
Figure 5: First Drop LED on the front panel of the MDC (left); Green LED on the front panel of the MDC (right)
With a precise fixing of the First Drop the tappet is situated in the correct position with the nozzle
insert.
4.2. Re-adjust the system for the exchange of nozzle insert
In general every fluid box system is mounted to the valve.
That means it is already adjusted and mounted together with the nozzle insert and the control
unit.
It is possible to change the nozzle insert and re-adjust the system.
Before changing the nozzle insert it is recommended to clean the solvent and dispense areas.
The following description explains the change of the nozzle insert step by step.
Before starting please note that
the fluid box system has to be
dry and clean.
To remove the
nozzle insert it is
recommend to use:
MDT 301 universal
tool and
MDT 303 nozzle
changing tool
Unscrew the
nozzle unit.
Use the MDT 303.
To remove the
nozzle insert use
the backside of the
pin tool MDT 301.

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Before doing the adjust,
the tappet has to be
exposed without any
drag and nozzle insert.
Switch on the
Control Unit: The
display shows the
message:
READY
Press the adj button to
start the adjust
procedure.
On the screen the
message
RELEASE NU
ATT(ention)
FLUID!!!!!
is shown.
Confirm with enter
The display shows the
message:
ENTER FOR
500 SHOTS
Please confirm with the
enter button.
The display shows
the message:
Calibration please
wait
The calibration
process can take a
few minutes so
please wait.
Once the Calibration
process is finished, the
actual position of the
tappet in µm is shown
on the display.
Use the tool
MDT 301 to insert
the nozzle insert
into the peek bore
of the tappet outlet.
The nozzle insert is
fixed inside the bore and
has contact to the
tappet.
On the display the
message should
have changed to a
smaller value.
The tappet is
closer to the nozzle
insert now.
Use the Nozzle
Changing Tool MDT 303
to screw in the nozzle
unit up to the marking.
If the nozzle unit is
screwed complete
inside the Fluid
Box, the µm value
will change into the
green LED area
(meaning adjust
positive).

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 14
The positive adjust level
(green LED) is from 0 to
50 µm.
Confirm the message
with Enter.
If you have
performed the
adjust successfully,
the display shows:
READY
TNLmax = 0%
The green LED in
the right window
“adjust”is on.
Notice:
Do not try to make the adjust without removing the
nozzle insert. This will damage the actuator sensor
system.
For the change of the nozzle insert it is not required
to remove the whole Fluid Box.
Notice:
By screwing in the nozzle unit you reduce the
stroke of the tappet and therefore make sure
that you have the right distance between tappet
and nozzle insert. The adjusted value in µm is
specifying the position of the tappet.
This adjustable value is already included in the
total stroke and has no influence on the
effective Needle Lift.
4.3. Positioning of the First Drop
To adjust the First
Drop, please
press the F2
button.
The Display shows the
message:
FILL UP WITH
MEDIUM!!!!!
Please mount the
cartridge with the
dispense Material
(D-Bonder) and
set the required
pressure: 0.5-1
bar, depending on
fluid viscosity
Confirm the message
with the enter button.
Now it is required
to dispense 1000
shots.
Place a adequate
container under
the nozzle insert.
Confirm the message:
ENTER FOR 1000
SHOTS by using the
enter button.

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 15
After processing
the dispense
sequence you
have to clean the
nozzle.
Clean the nozzle with a
proper fabric.
Make sure that the
lower surface is dry and
that no further drops
appear after cleaning.
To confirm the
message CLEAN
NOZZLE please
press the enter
button.
The display shows the
message for the
adjustment of the
Needle Lift setting.
The Needle Lift in %
describes on which
position the tappet
opens and the fluid
comes out of the nozzle
insert.
First you can set a
start value which
defines on which
stroke the
movement of the
tappet begins to
move.
Use the arrow
keys.
Confirm your
setting with enter.
Notice:
The calibration starts with a 15 % NL value.
The viscosity of the fluid has influence on the value
of the First Drop in percent.
With using of watery media the value for the First
Drop is between 20 % and 35 % Needle Lift. If you
set the start point and the drop is already visible, you
have to start again and chose a lower start value.
To set the First Drop you go upwards in 1 % steps
after the start value until a visible drop is shown
under the nozzle insert.
The display shows
the message:
DROP VISIBLE?
Confirm the start
value with the adj
button. With every
using of the adj
button the tappet
moves upward in
1% steps.
If there is a visible drop
on the lower surface of
the nozzle, you have
reached the point of the
first drop for the tappet.
Confirm your
setting with the
enter button.
The Display shows the
Message:
TNL max = 50%
And the red LED for “first
drop”is off.
Notice: TNL stands for True Needle Lift.
It is also possible to set the Needle Lift over 50 %. You can do this in the menu “Pulse
Parameters”.
However this has an influence on the dispense accuracy and the accuracy from valve to valve.
The calibration of the first drop is invalid in this case, and the red LED for the first drop is on.

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 16
4.4. Notice for the Adjust and the performing of the First Drop
Description of problem:
Possible reason:
Solution:
The LED in the window “first
drop” is still on, after a
successful calibration of the
first drop has been done.
The Needle Lift set in the menu
“Pulse Parameters” is more than
the maximum value of the True
Needle Lift.
You have to set the
Needle Lift to the value
of the TNL max or
lower.
After the calibration of the
stroke of the tappet the
display shows the message:
MAX NEEDLE LIFT XX%.
The maximum stroke measured by
sensor is under the standard
tolerance value.
For the optimal
dispense result the
valve has to be rebuild
at VERMES
Microdispensing.
The LED in the window
“adjust”is suddenly red while
doing the first drop process.
The position of the tappet is
unstable after the indication of the
1000 shots.
A non-professional mounting or
fixation or abrasion of the tappet is
a possible reason.
You have to clean the
nozzle insert, the
tappet and the tappet
guidance and then
repeat the procedure.
Table 2: Notice for the Adjust
5. Scope of supply
Please check after receipt of your Micro Dispensing System if the delivery is complete.
5.1. Standard
Please check after receipt for sufficiency.
The following components are part of the standard scope of supply for the MDS 3000 family:
Micro Dispensing Valve MDV 3010A/3020A
Actuator cable (red)*
Control unit MDC 3090A-FA
Sensor cable (yellow)*
Fluid box MDF 3070FA-Ciano-SSI*
Power cord (black)
Nozzle insert*
MDT 301 Universal tool*
MDT 303 nozzle changing tool*
Protection for tappet
Manual
Decontamination certificate
*Must be ordered separately
Figure 6 : MDV 3020A with MDF 3070FA-cyano SSI; MDT 301; MDT303
Recommended:
Optional available:
CTK - Cleaning Tool Kit
Various fluid boxes
For additional information and special requirements please contact VERMES Microdispensing.

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 17
6. Micro Dispensing Valve MDV 3010A and MDV 3020A
6.1. Technical data MDV 3010A/3020A
Property
Value
Unit/Explanation
Dispensing quantity range
from 9
nl per cycle
Supply air pressure range
0.1 to 7
bar (relative) (0,1 –73 psi)
Dynamic viscosity of dispense media
Low and middle viscous media (depending on thixotrophy)
Response time
about 1
ms
Accuracy of dispensing quantity
< 1
% (at p, T = const)
This property is strongly
fluid-dependent
Maximum dispensing frequency
450
1/s
Continuous load dispensing frequency
200
1/s
Operating temperature range
10 to 50
°C
Corrosion resistance
all aqueous media, organic solvents, weak acids and
alkaline
Dimensions (basic version)
115 x 39.5 x 10
mm
Weight
220
g
Table 3: Technical data MDV 3010A/3020A
6.2. Valve types/Options
Types:
MDV 3010A: low viscous, ceramic tappet
MDV 3020A: low viscous, ceramic tappet
MDV 3200A: high viscous, ceramic tappet
Optional:
Nozzle heater
Nozzle fixing unit
Fluid box module heating
Cartridge connectors
6.3. Special features MDV 3010A/MDV 3020A
6.3.1. Normally closed
In static condition the valve is closed. No uncontrolled leaking of dispensing medium.
6.3.2. Quick-Change
The fast adjustment of the nozzle orifice allows a quick change. The exact position of the new
nozzle insert is controlled by reliable electronics.
6.3.3. Null-set dispensing
Dispensing without medium (inflow disconnected) leads to stronger wearing, mainly of the nozzle
insert. This application has to be avoided.
6.3.4. Modularity
All Micro Dispensing Valves are configured modular. Several components can be exchanged
quickly. Therefore repair time and costs are reduced significantly.

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
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6.3.5. Position
The Micro Dispensing Valves are operable in any mounting position. The integration of the Micro
Dispensing Valves into production process is very simple.
6.3.6. Handling
Remote control via PC of all valve functions is possible. The control unit MDC 3090A-FA can be
easily integrated into your system.
6.4. Material classification
VERMES Microdispensing only uses high-quality materials.
All fluid contact parts consist of high-alloyed, rust-proof and acid-resistant stainless steels
as well as modifications of the high performance polymer families of polyetheretherketone
(PEEK) and of polyethylene (PE).
You can get sealings alternatively in NBR, EPDM, VITON or Silicone.
Our nozzle inserts are adapted to the particular dispense media and consist alternatively
of various materials like stainless steel, plastics, ceramics or technical glass.
7. Control Unit MDC 3090A-FA
7.1. Description of the MDC module
The control unit MDC 3090A-FA consists of:
switch-mode power supply to provide all voltage
microprocessor-based control unit for the Micro Dispensing Valve
display
key panel
4 LED-displays on the front panel
various interfaces on the back side
rubber connector for lead-out to 230V power supply system
on/off-switch for voltage supply
Figure 7: Control unit MDC 3090A-FA

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 19
7.2. Technical data MDC 3090A-FA
Property
Value
Unit/Explanation
Number of parameter storage spaces
10
Lines on display
2
16 characters each
Colour of display
white
Backlighting
Push buttons
12
Maximum heating temperature
-
-
Heating circuits
1
No function
Pilot lamps (front side)
3
First Drop
Adjust ok (green)
Adjust not ok (red)
Pilot lamps (back side)
1
Mains on
Interfaces
8
Power plug (230 VAC)
9 pin Sub-D RS-232C (EIA-232)
15 pin. Sub-D PLC
4 x multi pin sockets
1 x thermo couple socket
Operating temperature range
10 to 50°C; for high precision operation is a temperature
constancy of ± 1°C in the field of 20-30 °C mandatory.
Housing colour
black
Button colour
yellow and
grey
Ventilation concept
Convection airing
No forced ventilation needed
Line voltage
230
V AC/DC
Line frequency
50/60
Hz
Maximum current consumption
300
mA
Housing design
Insert for 19 inch plug-in module
Weight
1350
g
Dimensions
Width 101 mm
Height 128 mm
Depth 173 mm (without cables)
Depth about 180 mm (with cables)
3 height units
20 depth units
Table 4: Technical data of MDC 3090A-FA
7.3. Control panel
7.3.1. LC display
The LC display contains two lines with up to 16 characters each. In the upper line, the current
menu item is displayed. The lower line shows the menu item that is in selection or the current
numeric value which can be changed.
Figure 8: Front panel

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 20
7.3.2. Function keys
Function keys
Meaning
manual trigger key
dispensing according to current adjustments
saving the current parameters (10 sets may be saved)
Every memory cell contains the parameters, the cal. Piezo value, sensor
slope value and the adjustments for the heating and key lock.
Use the arrow key to choose the memory cell
press to confirm
press to terminate
recalling saved parameters (10 sets may be saved)
Use the arrow key to choose the memory cell.
press to confirm
press to terminate
adjustment of the nozzle
level down (menu) or affirming an input (causes level up (menu))
level up (menu –values are not saved) or stopping an action
level up (menu) or increasing numeric values
level down (menu) or decreasing numeric values
last menu-item or one digit to the left or changing a parameter
next menu-item or one digit to the right or changing a parameter
valve opens with adjusted parameters of rising and falling
The valve is open until another key is pressed. But after 2 minutes it will be
closed to avoid damage of the actor
Fist Drop Adjust
Table 5: Function keys and their intent
7.4. Operation
7.4.1. Input of values
Numeric inputs are always processed according to the same scheme:
The definition of the input is shown in the upper LCD line. The current value to be changed is
shown in the lower LCD line. The “one”-column is blinking, it is active and can be changed.
Arrow up causes an increase by one
Arrow down causes a reduction by one
Arrow right causes a shift of the active figure to the right
Arrow left causes a shift of the active figure to the left