VEGA VEGASEL 643 - Manual (Page 11)

VEGASEL 643 11
Set-up
• Mount the terminal socket.
• Wire the input terminals of the terminal socket acc.
to the above mentioned conditions.
• Cover the input terminals with the separating
chamber.
• Switch the output of the auxiliary level switch acc. to
the technical requirements.
• Adjust on the DIL-switch (11) the range of the
inputs.
• When connecting a sensor to the active current
input (terminals 1 and 2) set the DIL-switch to
4 … 20 mA.
• Select on the DIL-switch (11) the desired mode.
• Adjust the switch points acc. to “section 4.3”.
• Mount the module unit to the terminal socket.
• Switch on the supply voltage, the green LED (6)
lights.
4.3 Switch point adjustment
Single point control
With a single point control it is possible to generate at
one point of the input signal (0…10 V or 0/4…20 mA) a
switching signal.
Coded key
Coded keys (2 and 4) are located in the front plate by
which the switch point (with single point level
switches) as well as the switching hysteresis (with
double point level switches) can be adjusted.
The figures are given in % and relate to the current or
voltage input. By pushing the buttons „+“ or „–“ you
can adjust the requested values raising or falling in
1 % or 10 %-steps.
Signal lamps
Green (6)
- Supply voltage on, ready for operation
Yellow (5)
- Status indication of the relay output
(LED lights = relay energized,
LED extinguished = relay de-energized)
DIL-switch (13)
Laterally on top. When the signal conditioning instru-
ment is mounted, covered by the terminal socket.
Description of the individual functions
Adjustment possibility
- Current input 0 … 20 mA or 4 … 20 mA
voltage output 0 … 10 V or 2 … 10 V
- Mode A or B
A = overfill protection, B = protection against dry
running of pumps
12 13 14
t
12 13 14
79/80
%
100
0
Coded key
max. 80
Hysteresis
1 %
min. 79
Mode A
Mode B
0..
B
2..10V
4..20mA
A
4.2 Set-up sequence
The following list states the essential set-up steps in
short
Pre-requirement:
VEGASEL 643 auxiliary level switch is connected with
a measuring system (sensor and VEGAMET…) or
directly with a sensor (4 … 20 mA).
Procedure
• Adjust the switch point on both coded keys.
• As example min. = 79 %, max. = 80 %, with this
adjustment there is a hysteresis of 1 %.
• Possible adjustment range 1 % … 99 %.
• The auxiliary level switch is hence ready for opera-
tion. Please cover with the transparent cover (15).