Control Techniques unidrive sp Advanced User's Manual page 54

Parameter Keypad and Parameter
structure display x.00
3.04 Speed controller output
Drive modes Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Update rate 4ms write
The output of the speed regulator is a torque demand given as a percentage of rated motor torque. This is then modified to account for changes in
motor flux if field weakening is active, and then used as the torque producing current reference.
3.05 Zero speed threshold
Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Default Closed-loop vector, Servo
Update rate Background read
If the speed feedback (Pr 3.02) is at or below the level defined by this parameter in either direction the Zero speed flag (Pr 10.03) is 1, otherwise the
flag is 0.
3.06 At speed lower limit
Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Default Closed-loop vector, Servo
Update rate Background read
3.07 At speed upper limit
Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Default Closed-loop vector, Servo
Update rate Background read
"At speed" flag (Pr 10.06) is set if the speed feedback (Pr 3.02) is on the boundaries or within the at speed window. Flags Pr 10.07 and Pr 10.05 are
set if the reference is above or below the window respectively.
If Pr 3.09 = 0 reference window mode is used and the "at speed" condition is true if
(|Pr 1.03| - Pr 3.06) ≤ |Pr 3.02| ≤ (|Pr 1.03| + Pr 3.07)
(If the lower limit is less than zero then zero is used as the lower limit.)
If Pr 3.09 = 1 absolute window mode is used and the "at speed" condition is true if
Pr 3.06 ≤ |Pr 3.02| ≤ Pr 3.07
Unidrive SP Advanced User Guide
Issue Number: 7
Parameter Advanced parameter
description format descriptions
FI DE Txt VM DP ND RA NC NV
1 1 1 1
±TORQUE_PROD_CURRENT_MAX %
FI DE Txt VM DP ND RA NC NV
0 to 200 rpm
5
FI DE Txt VM DP ND RA NC NV
0 to 40,000 rpm
5
FI DE Txt VM DP ND RA NC NV
0 to 40,000 rpm
5
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Serial comms Electronic
Macros
protocol nameplate
PT US RW BU
1 1
PT US RW BU
1 1 1
PT US RW BU
1 1 1
PT US RW BU
1 1 1
Feature look-
Performance
up table
PS
PS
PS
PS
Menu 3
Closed-loop
53