VEGA VEGASON 71 - D - Manual (Page 32)

VEGASON 71 - D 32
7 Output results
7.7 Level module
The pulse-echo measuring system can be equipped with a
level module. This module is provided with two relays.
Mode coordination
Relay Coordination Switching command
output ON OFF
1 Mode 0 - 53 Mode 0 - 55 Mode 0 - 56
2 Mode 0 - 54 Mode 0 - 60 Mode 0 - 61
7.7.1 Coordinations and their relations
For each relay or relay output the coordination can be
programmed separately.
Relay Measur- Measur- Coordination Linearization
ing result ing unit Mode Mode
1 Distance
in m
0 - 53 = 1 0 - 18 = 1
Level
in %
0 - 53 = 2 0 - 18 = 1
Volume Flow
propor- in % 0 - 53 = 2 0 - 18 =
tional 4 … 12
2 as above, however 0 - 54 = … 0 - 18 = …
7.7.2 Switching commands
Mode 0 - 53 defines the measuring result and its
measuring unit coordinated to the relay output.
Acc. to the sequence of the switching commands it is
possible to program the respective relay output as overfill
protection or protection against dry running of pumps
(A/B-function).
The min-
∆
for the switching commands is 10 mm or 0,5 %.
Mode 0 - 55 means switching command on, i.e.
- the relay of output 1 is energized
- the LED-indication extinguishes
Mode 0 - 56 means switching command off, i.e.
- the relay of output 1 is de-energized
- the LED-indication lights
Same procedure for relay output 2, however mode 0 - 60
and
0 - 61
.
Diagram for overfill protection
Two point level switch: switching command off above
switching command on means overfill protection
(function A)
0
25
75
100
50
% m
off
on
0
25
75
100
50
% m
on
off
Programming example for relay output 1
- coordination to measuring unit level in % corresponds
to
0 - 53 = 2
- two-point level switch as overfill protection
Coordination
•
Enquire mode 0 - 53 in the MODEFIELD
• Program figure 2 in the PARAMETER FIELD
• Then store with STO
Switching command on
•
Enquire mode 0 - 55 in the MODEFIELD
• Program 025.0 % in the PARAMETER FIELD
• Then store with STO
Switching command off
•
Enquire mode 0 - 56 in the MODEFIELD
• Program 050.0 % in the PARAMETER FIELD
• Then store with STO
Same procedure for relay output 2, however mode 0 - 60
and 0 - 61 .
Level
propor-
tional
switching
command off
Mode 0 - 56
switching
command on
Mode 0 - 55
switching
command on
Mode 0 - 55
switching
command off
Mode 0 - 56
Diagram for protection against dry running of
pumps
Two point level switch: switching command off above
switching command on means protection against dry
running of pumps (function B)