Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
4. Representing the Reference Values in User Units
KSW-16
Analog signals
Signal Function Selector
Fieldbus
Image
Display
Parameter
Scaling
Master reference
value
The master reference value signal can be accessed
via analog input or fieldbus. This signal can be used
to implement a master-slave operation via an analog
coupling.
D140 D240 D340 -
4.5 Switching between Master/Slave Drive in Torque/Speed Mode
Information that you will find in
this section …
This section shows you how to scale a torque reference value in user units. Before you
can begin scaling you must have activated the torque reference value on page 1 of the
Assistant.
Scaling the reference value
Figure 4-13 shows page 2.5 of the Assistant. You can only scale this type of reference
value in % which means you don't need to do extensive scaling for speed and torque
mode.
With asynchronous motors a 100% torque reference value corresponds to the rated
torque. With servomotors a 100% torque reference value corresponds to the standstill
torque. Scaling of the speed is done in D87 and D88.
Proceed as shown below:
• Specify the accuracy of the representation in D86.
• Enter "%" in D89.
• Enter 100% in D56.
• Enter a percentage in D87 and parameterize the appropriate speed in D88.
Example:
D87= 50%, D88 = 1000
This gives you at reference value of 50% a speed of 1000 Rpm.
Figure 4-13 Scaling for reference value type "master/slave drive" in "speed/torque" mode