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 251
Issue Number: 7 www.controltechniques.com
Provided the set-up parameters for the position feedback are correct this parameter shows the speed feedback in rpm.
These parameters effectively give the position with a resolution of 1/2
16
ths of a revolution as a 32 bit number as shown below.
Provided the set-up parameters are correct, the position is always converted to units of 1/2
16
ths of a revolution, but some parts of the value may not
be relevant depending on the resolution of the feedback device. For example if 10 bit resolution is selected the resolver produces 4,096 counts per
revolution, and so the position is represented by the bits in the shaded area only.
When the feedback device rotates by more than one revolution, the revolutions in Pr x. 04 increment or decrement in the form of a sixteen bit roll-over
counter.
x.02 Option software version
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
2111 1
Range Open-loop, Closed-loop, Servo, Regen 00.00 to 99.99
Update rate Write on power-up
x.03 Speed
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
11111
Range
Open-loop, Closed-loop vector, Servo,
Regen
±40,000.0 rpm
Update rate Combined update time. This module adds 4ms to the combined update time.
x.04 Revolution counter
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
11111
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to 65,535 revolutions
Update rate Combined update time. This module adds 4ms to the combined update time.
x.05 Position
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
11111
Range
Open-loop, Closed-loop vector, Servo,
Regen
0 to 65,535 (1/2
16
ths of a revolution)
Update rate Combined update time. This module adds 4ms to the combined update time.
31 16 15 0
Revolutions Position
31 16 15 4 3 0
Revolutions
Position
x.10 Equivalent lines per revolution
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
0 to 50,000
Default
Open-loop. Closed-loop vector, Servo,
Regen
4,096
Update rate Background read
http://nicontrols.com
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