Reconfiguring The Analogue Outputs; Without Hardware Setting Change - Gossen MetraWatt SINEAX DME 440 Mode D'emploi

• Power system check: Display of all the system values,
ideal as a wiring check (RS 232 only)
• The simulation of the analogue outputs for test purposes
(RS 232 only)
• Printing of nameplates.
The "METRAwin10 Software" for the SINEAX DME 440 has
been especially developed for evaluating measured varia-
bles that are uploaded via the MODBUS interface (RS 485).
The main features of the software are:
• Simultaneous processing of up to 10 measured variables
that have been uploaded from selected transducers and
time and date stamped
• Provision for recording minima and maxima
• Continuous recording of up to 4 measured variables
(y/t plot)
• Digital display of up to 4 measured variables with provision
for switching to an analogue display.
Fig. 15. Digital display.
• Adjustable measurement scanning interval
• Printing of measurements in tables or as curves
• Transfer of measurements to other Windows programs
• Simple setting of parameters
• Provision for saving measurements for subsequent
evaluation
• Provision for saving device configurations for reuse of
settings.

8. Reconfiguring the analogue outputs

The alternative configurations for the analogue outputs can
be seen from Table 1.
38
Table 1:
Action
Change the current full-
scale value from, for
example, 20 mA to 10 mA
(a hardware setting always
has to be made when
changing from a lower to
a higher value)
Unauthorized repair of alteration of the unit
invalidates the warranty!

8.1 Without hardware setting change

The PC software DME 4 (Order No. 146 557) and a
programming cable (Order No. 980 179) are needed in order
to reprogram the device. The reduced accuracy resulting
from this change can be determined by printing a type label
(see Fig. 16 and 17).
100V 2.5A (16.8 kV/100V 2500A/2.5A) 50Hz
 0.25* c 
15+ 16 –
A
P1 –85MW –20mA
85MW 20mA
 0.25* c 
C 19+ 20 –
I3 0A 0mA
3000A 20mA
1: P
R
2: P
G
000
3: Q L
4: Q
C
Fig. 16. Example of a type label with the present 20 mA output
and an accuracy class of 0.25 c.
100V 2.5A (16.8 kV/100V 2500A/2.5A) 50Hz
 0.45* c 
15+ 16 –
A
P1 –85MW –20mA
85MW 10.0mA
 0.25* c 
19+ 20 –
C
I3 0A 0mA
3000A 20mA
1: P
R
2: P
G
000
3: Q L
4: Q
C
Fig. 17. Example of a type label with the new output of 10 mA
and an accuracy class of 0.45 c.
Procedure
Reconfigure the software,
but do not change the
hardware setting.
Accuracy is reduced
(see Section 8.1)
 0.25* c 
17+ 18 –
B
U12 0kV 0mA
18.5kV 20mA
0.15+0.03*c
D 21+ 22 –
F 49Hz –20mA
51Hz 20mA
RS485
23 25
Tx+/Rx+ GND
24 26
MODBUS Tx–/Rx–
9600 Baud
 0.25* c 
17+ 18 –
B
U12 0kV 0mA
18.5kV 20mA
0.15+0.03*c
21+ 22 –
D
F 49Hz –20mA
51Hz 20mA
RS485
23 25
Tx+/Rx+ GND
24 26
MODBUS Tx–/Rx–
9600 Baud