Control Techniques unidrive sp Advanced User's Manual page 254

Parameter Keypad and Parameter
structure display x.00
x.17 Error detection level
Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Range Open-loop, Closed-loop vector, Servo
Default Open-loop. Closed-loop vector, Servo
Update rate Background read
Trips can be enabled/disabled using Pr x.17 as follows:
Bit Function
0 Wire break detect
1 Not used
2 Not used
x.19 Feedback filter
Drive modes Closed-loop vector, Servo
Bit SP
Coding
Range Closed-loop vector, Servo
Default Closed-loop vector, Servo
Update rate Background read
A sliding window filter may be applied to the feedback. This is particularly useful in applications where the feedback is used to give speed feedback
for the speed controller and where the load includes a high inertia, and so the speed controller gains are very high. Under these conditions, without a
filter on the feedback, it is possible for the speed loop output to change constantly from one current limit to the other and lock the integral term of the
speed controller. The filter is not active if the parameter value is 0ms(0) or 1ms(1), but operates over the defined window for parameter values of
2ms(2), 4ms(3), 8ms(4) and 16ms(5).
x.24 Encoder simulation source
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop. Closed-loop vector, Servo,
Default
Regen
Update rate Background read
x.25 Encoder simulation ratio numerator
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop. Closed-loop vector, Servo,
Default
Regen
Update rate Background read
Pr x.24 = Pr x.05
Encoder simulation output is derived from the resolver input via hardware. The resolution multiplier can be set up using Pr x.25 as shown in the table
below. The marker output is active when the resolver position is zero, therefore the marker pulse width is equivalent to one encoder count if the ratio
is 1, but is reduced if the ratio is less than 1. Some ratios are not possible when the resolver resolution is reduced below 14 bits as shown in the
following table.
Unidrive SP Advanced User Guide
Issue Number: 7
Parameter Advanced parameter
description format descriptions
FI DE Txt VM DP ND
0 to 7
0
FI DE Txt VM DP ND
0 to 5 (0 to 16ms)
0
FI DE Txt VM DP ND
2
Pr 0.00 to Pr 21.51
Pr 0.00
FI DE Txt VM DP ND
4
0.0000 to 3.0000
1.0000
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Serial comms
Macros
protocol
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1 1
RA NC NV PT US RW BU
1 1
Electronic Feature look-
Performance
nameplate up table
PS
1
1
PS
1
PS
1
Menus 15 to 17
SM-Resolver
253