Control Techniques unidrive sp User Manual

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Menu 7
Unidrive SP Advanced User Guide 143
Issue Number: 7 www.controltechniques.com
1.37) or as a hard speed reference (Pr 3.22) the sample time affects the resolution. The nominal resolution is given by Pr 7.26 x -500 x 10
3
, therefore
the default setting gives approximately 12 bit resolution.
If an analog input is used with 4-20mA or 20-4mA current loop modes the respective bit (Pr 7.28 - analog input 2 and Pr 7.29 -3) is set to one if the
current falls below 3mA. If the current is above 3mA with these modes or another mode is selected the respective bit is set to zero.
An offset can be added to each analog input with a range from -100% to 100%. If the sum of the input and the offset exceeds ±100% the results is
limited to ±100%.
This offers a simple control of Pr 7.19 to change the source for the analog output for use from Menu 0. When this parameter is set to 0 or 1 the drive
constantly writes Pr 5.01 or Pr 4.02 to Pr 7.19 respectively.
7.28 T5/6 analog input 1 current loop loss
7.29 T7 analog input 2 current loop loss
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Update rate Background write
7.30 T5/6 analog input 1 offset
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
211
Range
Open-loop, Closed-loop vector, Servo,
Regen
±100.00 %
Default
Open-loop, Closed-loop vector, Servo,
Regen
0.00
Update rate Background read
7.31 T7 analog input 2 offset
7.32 T8 analog input 3 offset
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111
Range
Open-loop, Closed-loop vector, Servo,
Regen
±100.0 %
Default
Open-loop, Closed-loop vector, Servo,
Regen
0.0
Update rate Background read
7.33 T9 analog output 1 control
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1 111
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to 2
Default
Open-loop, Closed-loop vector, Servo,
Regen
2
Update rate Background read
Parameter value Parameter string Action
0 Fr Write Pr 7.19 = Pr 5.01
1 Ld Write Pr 7.19 = Pr 4.02
2 AdV No action
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Control Techniques unidrive sp Specifications

General

Brand	Control Techniques
Model	unidrive sp
Category	Controller
Language	English