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Operation VTK - TR -BA- 171e - 1 - User Manua l MDS 3080 -V 81 7.15 Switch ing OFF the Mic rodispen sing System – Step 1: The c urrent di spensing cycle m ust b e completed , so th at the v alve is in hom e posi tion. – …
Operation
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VTK-TR-BA-171e-1 - User Manual MDS 3080-V
IMPORTANT NOTE
Confirming adjust while green LED is ON
Confirming the successful adjust by pressing [enter] is only possible, if the green LED is on.
INFORMATION
Further adjust information
• You can always leave the adjust by pressing the [esc]-key.
• After the successful adjust, the green LED will go off after approx. 3 s.
Operation
VTK-TR-BA-171e-1 - User Manual MDS 3080-V
81
7.15 Switching OFF the Microdispensing System
– Step 1: The current dispensing cycle must be completed, so that the valve is in home position.
– Step 2: Lower the supply pressure to atmospheric pressure (because in initial position, the
valve is still opened). Disengage the pneumatic supply. If required, close the cartridge by
using locking pin MDT 309.
– Step 3: Switch OFF the control unit (ON/OFF button at the rear end). After switching OFF the
control unit, please wait a few seconds.
– Step 4: Disconnect the valve from fluid supply.
– Step 5: Remove all cables from the valve.
– Step 6: Unscrew the screws used for fixing the valve in place.
After working with self-curing substances, immediate cleaning is advisable in order to avoid
clogging. This concerns the valve itself and all parts in contact with the fluid. The valve and its
subcomponents have to be dismantled and cleaned (see chapter 9, page 129).
Communication Interfaces
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VTK-TR-BA-171e-1 - User Manual MDS 3080-V
8 Communication Interfaces
The control unit has three communication interfaces. There is a 9-pin serial interface, RS-232C, a
15-pin PLC-interface and an AUX socket.
8.1 Serial Interface RS-232C: 9-Pin Sub-D
Fig. 30: Serial interface
The local interface is structured according to SCPI Standard.
These “Standard Commands for Programmable Instruments” represent a standardized set of
instructions used for control and programming, transmitted in form of ASCII text. They can be
generated by any selectable programming language in any environment. The serial interface
operates by means of software handshake. The hardware handshake communications are not in
use.
INFORMATION
Communication while triggering
Do not send instructions through this interface in the course of a running dispensing cycle.
Communication is only possible between distinct sequences (signal DosOK on “high”). This is
especially important during start-up of a heater.
After sending data or parameters to the control unit, you have to wait for the “OK” signal before
you can start further actions. You only can send data while the MDC is in the main menu.