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= Key 1
= Key 2
= Key 3
= Maximum or consumption = Minimum or supply
Example: Sum real power
On the internal analogue output of the UMG 503 the sum
of real power shall be given out as a current. As a
generator shall be switched on sometimes, the delivered
real power shall be retrieved as well. Real power supplied
is indicated by a "-" before the real power value.
The following settings are required:
Output range
= 0 .. 20mA
Measured value
= Sum real power
Scale start value
= -100kW (Delivery to energy
supplier)
Scale end value
= 400kW (Consumption)
With the selected settings, a power range of 100kW +
400kW = 500kW is covered. So is 500kW = 20mA.
1mA corresponds to 500kW/20 = 25kW.
If no real power is supplied or consumed, a current of
4mA is flowing.
If real power is supplied, a current smaller but 4mA is
flowing.
Example: cos(phi)
output range
= 4 .. 20mA
Scale start value
= 0.700inductive
Scale end value
= 0.900capacitive
So the scale range is devided from 0, 400 to 16mA, and
cos(phi)1.000 corresponds to 16mA.
0mA
4mA
20mA
10mA
0,700ind.
0,900kap.
1,000
16mA
CONF
Programming
The external analogue outputs can only be indicated and
programmed, when the protocol "06" (Modbus RTU Ma-
ster) is set at the UMG 503. The programming of the
internal and external analogue output is very similar
except some small exceptions.
If the protocol "06" (Modbus RTU Master) is selected,
the first external analogue output "01" is indicated besides
the internal analogue output. Otherwise the indication of
the menu for the pulse output appears.
To display the other
external analogue out-
puts "02" up to "06",
please press
key 2
. Con-
f i r m t h e s e l e c t e d
analogue output with
key 1
and program it.
The text"
AnLo
" flas-
hes.
0mA
4mA
20mA
10mA
-100kW
400kW
0kW
15mA
300kW
150kW
Consumption
Supply
If you are in the menu
CONF
,
you leaf to the
i n d i c a t i o n o f t h e
internal analogue output
using
key 3
.
With
key 1,
the selected
a n a l og u e o u t p u t i s
confirmed and can be
programmed. The text
"
AnLo
" is flashing.
CONF