Rockwell Automation 1395 Digital Reference Adapter Board - Manual (Page 53)

Chapter 6
StartĆUp
6-7
For Analog Input #2, a 0 to 10 volt potentiometer will be used to adjust the
Drives torque reference from –100% to +100%. The Analog In #2 fast
parameter (Par 402) , has been linked to the torque reference fast parameter
(Par 157). Both the digital scale and offset parameters will need to be
adjusted in order to get the entire +/– 100% in the 0 to 10 volt range. As
seen in
Figure 6.4 , the digital offset voltage adds the corresponding value
to the input. In this case, an offset of –5 volts adds a digital of –1024 to the
range. This causes 0 volts on an Analog Input #2 to register as a –1024
digital value. It then can be scaled so that the result is a digital value of
–4096 for –100% torque reference.