Siemens 7SJ82, Manual

Page: 247 / 1638

A serial communication module optionally uses 2 channels. With the
Channel number
setting, you specify
the channel number (1 or 2) used to connect the 20-mA unit to the device. The communication module inputs
are labeled with the channel numbers.
Parameter: Slave address
•
Default setting
(_:2311:106) Slave address
=
1
Use the
Slave address
setting to define the device address of the 20-mA unit. If only one 20-mA unit is
connected to the serial bus, the default value
1
can be used. Set the same device address as used with the 20-
mA unit. The device address is important for distinguishing several 20-mA units that are connected to a serial
bus. Set an unambiguous device address on every 20-mA unit, for example, 1, 2 and 3 when connecting 3 of
the 20-mA units. On every 20-mA unit, set for the
Slave address
setting in the 3 functions 20-mA Unit
Serial the same device address for each.
Parameter: Unit
•
Default setting
(_:13111:103) Unit
=
°C
You use the setting
Unit
to specify which physical unit of measurement the measured values represent. The
possible setting values are listed in the settings table.
Parameter: Conversion factor
•
Default setting
(_:13111:104) Conversion factor
=
100
The
Conversion factor
setting allows you to set the conversion factor for the measuring transducer.
Parameter: Resolution
•
Default setting
(_:13111:108) Resolution
=
0.1
The
Resolution
setting is used to specify the measured value resolution.
Parameter: Range active
•
Default setting
(_:13111:107) Range active
=
false
If you do not activate the
Range active
setting (no x in the check box), the function operates over the
range 0 mA to 20 mA. The setting of the range for the scaled value goes from a usable range of 0 mA to 20
mA.
If you activate the
Range active
setting, then 4 additional settings
Upper limit
,
Upper limit -
Sensor
,
Lower limit
and
Lower limit - Sensor
appear.
Parameter: Upper limit, Lower limit, Upper limit - Sensor and Lower limit - Sensor
•
Default setting
(_:13111:105) Upper limit
=
20 mA
•
Default setting
(_:13111:109) Upper limit - Sensor
=
100
•
Default setting
(_:13111:106) Lower limit
=
4 mA
•
Default setting
(_:13111:110) Lower limit - Sensor
=
100
If you activate the
Range active
setting, then 4 additional settings
Upper limit
,
Lower limit
,
Upper
limit - Sensor
and
Lower limit - Sensor
appear. The setting
Upper limit - Sensor
is the
calculated measured value if the input current corresponds to the value in the
Upper limit
setting. The
setting
Lower limit - Sensor
is the calculated measured value if the input current corresponds to the
value in the
Lower limit
setting.
The following settings and information table shows only 1 of the 12 channels, as the setting possibilities of
the 12 channels do not differ.
Function-Group Types
5.6 Function-Group Type Analog Units
SIPROTEC 5, Overcurrent Protection, Manual 247
C53000-G5040-C017-8, Edition 07.2017