Vermes MDS 3010A-FA - Control Options

Manual Micro Dispensing Systems MDS 3010A-FA and MDS 3020A-FA
VTK-VS-BA-002 Revision B 27
Pin 13
Output
0/+24 V,
Ra=2.2k
Error/nozzle unit “adjusted”
Not OK
Nozzle unit over screwed
(stroke limitation!)
“Health Pin”
MDC start/restart indicator
Pin 14
Output
0/+24 V,
Ra=2.2k
DosOK – ready for
dispensing (in [BURST]
mode after finishing the
entire pulse packet)
Pin 15
Digital
input/
output
0/+5 V
Starting the high speed
mode
7.6. Control options
The Micro Dispensing Systems of the MDS 3000 family work according to the control profile
shown below.
Figure 13: Control curve
Parameter
Description
Rising
The time span for opening the valve (0,1 ms)
Open Time
Time span the valve stays open (0,1 ms)
Falling
During this time the valve gets closed and the remaining medium from the
nozzle compression chamber gets repressed. (0,1 ms)
Delay
Two components of this delay: the adjusted value and the value of added
breaks through intrasystem processes. (0,1 ms)
Needle Lift
The movement range of the tappet. (%)
Table 11: Description of the Pulse-Parameters
There are several methods to initiate a dispensing impulse:
 per keypad: press ,
 per RS232: command VALVE:OPEN
 Normal Mode
per PLC-signal and predefined Open Time: (max. trigger frequency 200 Hz)
Raising Open Time
Falling
Delay
time
Stroke
valve is opened
valve is closed
Needle Lift
Valve is open
Valve is closed
Rising