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Unidrive User Guide 189
Issue Number: 9 www.controltechniques.com
* This is the maximum range, for further restrictions see below.
The range of this parameter is limited depending on the maximum speed
expected which is the maximum magnitude from Pr 1.06 or Pr 1.07.
The hard speed reference is a reference value which does not pass
through the ramp system (menu 2). It is added to the normal post ramp
speed reference. Its value may be written from the keypad, via serial
comms, from an analog input or from an encoder input. This parameter
can also be used by the position controller (menu 13) as the speed
correction input.
This parameter is similar to the analog input parameters (Pr 1.36 and Pr
1.37) in that if an analog input programmed in voltage mode is directed
to it, the scan rate of that analog input is increased (See menu 1). The
scaling will be the same as for bipolar mode on Pr 1.36 and Pr 1.37. It is
also possible to obtain a fast update rate if an encoder input is used to
derive this speed reference.
Enables connection of the hard speed reference.
3.19 Hard speed reference
RW Bi
CL
Ú
±30,000 rpm*
Ö
0
3.20 Hard speed reference select
RW Bit
CL
Ú
0 or 1
Ö
0
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