User
Manual
Bed
‐
GK
1+2e
Rev.
03.04.2019
Page
51
/
143
B.
Wiring
diagram:
C.
Measuring
values:
The
rated
measuring
range
of
the
flow
meter,
e.g.
2
‐
80
m³/h
will
be
measured
by
linear
measuring
signal
0
‐
20
mA.
This
means:
1
mA
=
4
m³/h.
The
correct
function
of
the
transducer
can
be
checked
by
measuring
the
voltage
across
Pin
19
and
20
of
the
VCU.
During
maximum
flow,
in
this
example
80
m³/h,
the
voltage
drops
from
24
V
to
approx.
17
V.
At
the
same
time
the
voltage
between
earth
and
Pin
20
goes
up
by
the
same
amount.
D.
Greenkeeper
The
value
arrived
at
in
C.
above,
in
this
example
4m³/h
per
mA,
will
be
typed
in
the
"Scale"
entry
field
for
S5
in
the
"External
VCU
interface"
dialog
box.
Offset
‐
999.9
to
999.9
This
is
a
correction
value
affecting
only
the
Scale
factor
for
the
analogue
and
frequency
inputs.
The
correction
value
will
be
either
deducted
from
or
added
to
the
Scale
factor
entered.
The
corrected
scale
factor
is
then
used
for
the
calculations.
The
following
error
messages
can
be
encountered
with:
Code:
002
‐
xxx
below
limit
(the
value
is
too
low)
Code:
003
‐
xxx
above
limit
(the
value
is
too
high)
Code:
005
‐
xxx
is
not
valid
input
(invalid
value
entered)
The
above
data
is
specified
during
installation.
Do
not
change
any
data
without
discussing
it
first
with
the
installer
of
the
irrigation
system.
Summary of Contents for Greenkeeper Feedback
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Page 123: ...User Manual Bed GK 1 2e Rev 03 04 2019 Page 123 143 VCU...
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Page 136: ...User Manual Bed GK 1 2e Rev 03 04 2019 Page 136 143...
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