VEGA VEGASON 54K…56K - Manual (Page 38)

38 VEGASON 54K … 56K
Set-up
6 Set-up
6.1 Adjustment methods
Series 50 ultrasonic sensors can be adjusted
with
- PC (adjustment program VVO)
- with detachable adjustment module
MINICOM
- with HART ® handheld.
The adjustment must only be carried out with
one adjustment device. If, for example you
try the parameter adjustment with the
MINICOM and the HART
® handheld, the ad-
justment will not work.
PC
With the adjustment program VVO (VEGA
Visual Operating System) on the PC you can
adjust the ultrasonic sensors very easily. The
PC communicates with the sensor via the
interface adapter VEGACONNECT 2. During
the process, a digital adjustment signal is
superimposed on the signal and supply
cable. The adjustment can be carried out
directly on the sensor or at any desired loca-
tion along the signal cable.
Adjustment module MINICOM
With the adjustment module MINICOM, you
adjust in the sensor or in the external indicat-
ing instrument VEGADIS 50. With a dialogue
text display and 6 keys, the module offers
the same adjustment functionality as the
adjustment software VVO.
HART ® handheld
VEGASON 50K ultrasonic sensors, like other
HART
® protocol-compatible instruments, can
be adjusted with the HART ® handheld. A
manufacturer-specific DDD (Data-Device-
Description) is not required. The ultrasonic
sensors are adjusted with the HART
® stand-
ard menus. All main functions are therefore
accessible.
Functions that are rarely used, such as for
example, the scaling of the A/D converter for
the signal output, or the adjustment with me-
dium, are not possible or are blocked with
the HART
® handheld. These functions must
be carried out with the PC or the MINICOM.
6.2 Adjustment with the PC
The adjustment with the PC and the adjust-
ment program VVO is no longer outlined in
this operating instructions manual but in the
„VEGA Visual Operating (VVO)“ manual.
Apart from the adjustment of the sensor, will
find further instructions on the functionality of
the adjustment media with the PC in the
VEGA Visual Operating manual.
PC on the sensor
To connect the PC to the sensor, the interface
converter VEGACONNECT 3 is required.
Make sure that the pins of VEGACONNECT 3
are completely inserted into the sensor sock-
ets, as new pins have a slightly increased
resistance to insertion. The pins should be
inserted up to a depth of approx. 13 mm to
15 mm.
PC on the signal cable
Connect the two-wire cable of
VEGACONNECT 3 to the signal cable of the
sensor. If the resistance of the systems (PLC,
current source etc.) connected to the signal
cable is less than 250
Ω
, a supplementary
resistor must be connected to the supply
cable during adjustment, in order to get a
signal cable load of 250
Ω
... 350
Ω
. Reason:
The digital signals superimposed on the
signal cable would be considerably damped
or even „short circuited“ due to insufficient
system resistance.
When using a sensor in conjunction with a
VEGA signal conditioning instrument, use a
communication resistor according to the
following schedule:
VEGA signal conditioning instr. Rx
VEGADIS 371 no additional
resistor
necessary
VEGASEL 643 150 … 200 Ohm
VEGAMET 513 S1, 514 S2
515 S1, S2, VEGALOG EA card
100 … 150 Ohm