Siemens 6MD85, Manual

Page: 273 / 1256

Parameter:
Range active
•
Default setting
(_:107) Range active
=
false
If you do not activate the
Range active
parameter, the function assumes a range of -20 mA to +20 mA or
-10 V to +10 V. The setting of the range for the scaled value then assumes a usable range of -20 mA to +20
mA or -10 V to +10 V.
If you activate the
Range active
parameter, then 4 additional parameters
Upper limit, Upper limit
- SensorLower limit
, and
Lower limit - Sensor
appear.
Note that this setting is activated by either placing, or not placing the relevant check mark in DIGSI (see
Figure 5-73 ).
Parameter: Conversion factor
•
Default setting
(_:104) Conversion factor
=
1.00
With the parameter
Conversion factor
you can set the conversion factor for the measuring transducer.
Parameter: Upper limit, Upper limit - Sensor, Lower limit and Lower limit - Sensor
With the following parameters, you set the scaling of the measuring variables. By that, you can scale in an
application-specific way:
•
Default setting
Upper limit
=
20.00 mA
•
Default setting
Upper limit - Sensor
=
1.00
•
Default setting
Lower limit
=
-20.00 mA
•
Default setting
Lower limit - Sensor
=
1.00
With these setting parameters, you set the operating range of the measuring transducer as well as the conver-
sion of the values transmitted to the sensor values. Harmonize the operating range of the measuring trans-
ducer with the transmitter of the sensor. Using the free scalability of the system, you can meet different
requirements. The following figure shows the setting parameters in general terms.
Function-Group Types
5.7 Function-Group Type Analog Units
SIPROTEC 5, High-Voltage Bay Controller, Manual 273
C53000-G5040-C015-9, Edition 11.2017