Parameter
structure
Keypad and
display
Parameter
x.00
Parameter
description format
Advanced parameter
descriptions
Macros
Serial comms
protocol
Electronic
nameplate
Performance
Feature look-
up table
Menus 15 to 17
SM-Resolver
Unidrive SP Advanced User Guide 253
Issue Number: 7 www.controltechniques.com
Trips can be enabled/disabled using Pr x.17 as follows:
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).
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.
x.17 Error detection level
Drive modes Open-loop, Closed-loop vector, Servo
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 0 to 7
Default Open-loop. Closed-loop vector, Servo 0
Update rate Background read
Bit Function
0 Wire break detect
1 Not used
2 Not used
x.19 Feedback filter
Drive modes Closed-loop vector, Servo
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU
111
Range Closed-loop vector, Servo 0 to 5 (0 to 16ms)
Default Closed-loop vector, Servo 0
Update rate Background read
x.24 Encoder simulation source
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
21111
Range
Open-loop, Closed-loop vector, Servo,
Regen
Pr 0.00 to Pr 21.51
Default
Open-loop. Closed-loop vector, Servo,
Regen
Pr 0.00
Update rate Background read
x.25 Encoder simulation ratio numerator
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
4111
Range
Open-loop, Closed-loop vector, Servo,
Regen
0.0000 to 3.0000
Default
Open-loop. Closed-loop vector, Servo,
Regen
1.0000
Update rate Background read
http://nicontrols.com
To Next Page
Loading...
Need help?
General
