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SPX advanced – description of parameters
SPX ADVANCED APPLICATION MANUAL
SVCH0203—October 2017 www.eaton.com
Code
ID
Description
Notes
P1.1.9
631
Identification
P1.8.5.1
649
PMSM shaft position
6. Data logger trigger word
There is a special trigger word in application level that can
be used to trigger data logger. This word can be used for
triggering when source is selected from Application and
original SPX Advanced application vcn is used. Variable is
called “DataLoggerTrigWord”
DataLoggerTrigWord ID97
Function
Comment
b0
Fault status
Logger is triggered when there is a fault
b1
Warning status
Logger is triggered when there is a warning
b2
Auto reset warning
Logger is triggered when there is a fault
that has been defined to be automatically
reset. This bit can be used to get the first
fault situation.
b3
Fault status OR
warning status
B0 OR B1 triggering situation has happened
b4
Fault status OR
auto reset warning
B0 OR B2 triggering situation has happened
b5
b6
b7
b8
b9
b10
b11
b12
b13
b14
b15
7. Identification function for permanent
magnet synchronous motor
PM Motor has several zero positioning identification
modes. This chapter explains what kind of identification
mode is needed to select when using different kind of
hardware configuration.
This chapter is addition to P1.1.9 Identification parameter
description and P1.8.5.2 Start Angle Identification
mode description.
7.1 Zero position identification with
absolute encoder.
When using absolute encoder identification is made only
once. Remade is needed if encoder and rotor position
changes related to each other.
Motor needs to be able to rotate freely that magnet
positions can be identified.
Identification mode in this case is selected by “P1.1.9
Identification” selection “3/Enc.ID Run”.
During identification drive feeds DC current to motor
(~90 % of motor nominal), this causes motor to move
zero position, there may be oscillatory movement on the
shaft. When identification is successful “P1.8.5.1 PMSM
Shaft Position” is updated, if not successful value is set to
zero and identification warning is displayed for 10 seconds
(W57). If identification is made several times, result may be
different; there are as many positions as there are pole pairs
in the motor.
Benefit to use absolute encoder is that magnet position is
always known thus motor can be fully loaded from the start.