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Analog input scaling

Analog input scaling function

With the scaling of the analog input the analog value can be converted with a factor, offset and backlash to the process variable. The illustration shows how the scaling function works. Entering the desired voltage range produces the parameter value for the gain
P 0428 ANA0/1 and the offset P 0429 ANA0/1 Gain.

• Change to input voltage range of analog torque scaling
• Change to input voltage range of speed override function
• Change to switching threshold of a digital input function
  
  
  

Bild: Scaling of an analog channel

Example: Analog torque weighting

Default setting (standard controller function):
An input voltage range of the torque scaling from
0 V to +10 V corresponds to 0% - 100%.
-10 V to 0 V corresponds to 0%.

Setting of input and offset gain:

• Input voltage range (+10 V/-10 V)
  -10 V corresponds to 0%
  +10 V corresponds to 100% of the torque scaling
• Settings:
  -10 V Input voltage: Torque scaling = 0%
  In_min = -10 corresponds to 0 V Output voltage: Out_min = 0 V
  
  
• +10 V input voltage: Torque scaling = 100%
  In_max = +10 V corresponds to +10 V output voltage, OUT_max = 10 V
  
  
• Result:
  Gain: G = 0.5
  Offset: O = 5 V