Siemens SINAMICS S120 Commissioning Manual page 138

Diagnosis
3.2 Diagnostics via STARTER
r0077
r0078
Scaling
Scaling specifies how the measuring signal is processed. A straight line with 2 points must
be defined for this purpose.
Example:
x1 / y1 = 0.0% / 2.49 V x2 / y2 = 100.0% / 4.98 V (default setting)
– 0.0% is mapped onto 2.49 V
– 100.0% is mapped onto 4.98 V
– 100.0% is mapped onto 0.00 V
Offset
The offset is applied additively to the signal to be output. The signal to be output can thus be
displayed within the measuring range.
Limitation
● Limitation On
● Limitation off
Example of a measurement
Assumption:
The actual speed (r0063) is to be output for a drive via measuring socket T1.
How do you do it?
1. Connect and set the measuring device.
2. Interconnect the signal (e.g. STARTER).
3. Parameterize the signal characteristic (scaling, offset, limitation).
Function diagrams (see SINAMICS S List Manual)
● 8134 measuring sockets
138
If signals are output outside the permissible measuring range, the signal is limited to
4.98 V or to 0V.
The output of signals outside the permissible measuring range causes a signal overflow.
In the event of an overflow, the signal jumps from 0 V to 4.98 V or from 4.98 to 0 V.
Interconnect the connector input (CI) belonging to the measuring socket with the desired
connector output (CO).
CI: p0771[1] = CO: r0063
CO: Torque-generating current setpoint
CO: Torque-generating actual current
Commissioning Manual, (IH1), 07/2007 Edition, 6SL3097-2AF00-0BP7
Commissioning