GE AF-650 GP Programming Manual page 68

Parameter Descriptions
H-23 Motor Check At Start
Option: Function:
without any movement on ASM motors. For PM
motors, the check is performed as part of the position
detection.
H-24 Tracking Error Function
Option: Function:
This function is used to monitor that the
application follows the expected speed profile.
In closed loop, the speed reference to the PID is
compared to the encoder feedback (filtered). In
open loop, the speed reference to the PID is
compensated for slip and compared to the
frequency that is sent to the motor
(parameter DR-13 Frequency).
The reaction is activated if the measured
difference is more than the value specified in
parameter H-25 Tracking Error for the time
specified in parameter H-26 Tracking Error
Timeout.
A tracking error in closed loop does not imply
that there is a problem with the feedback
signal. A tracking error can be the result of
torque limit at too heavy loads.
[0] Disable
*
[1] Warning
[2] Trip
[3] Trip after
stop
Warning/Alarm 78, Tracking Error is related to the tracking
error function.
H-25 Tracking Error
Range: Function:
10 [1 - 600 Enter the maximum permissible speed error
RPM RPM] between the motor speed and the output
*
of the ramp when not ramping. In open
loop, the motor speed is estimated and in
closed loop, it is the feedback from
encoder/resolver.
H-26 Tracking Error Timeout
Range: Function:
1 s [0 - 60 s] Enter the timeout period during which an error
*
greater than the value set in
parameter H-25 Tracking Error is permissible.
H-27 Tracking Error Ramping
Range: Function:
100 [1 - 600 Enter the maximum permissible speed
RPM RPM] error between the motor speed and the
*
output of the ramp when ramping. In
open loop, the motor speed is estimated
DET-618D
AF-650 GP™ Programming Guide
H-27 Tracking Error Ramping
Range:
H-28 Tracking Error Ramping Timeout
Range:
1 s [0 - 60 s] Enter the timeout period during which an error
*
H-29 Tracking Error After Ramping Timeout
Range:
5 s [0 - 60 s] Enter the timeout period after ramping where
*
3.7.3 H-3# Speed Monitor
H-30 Motor Speed Monitor Function
Option:
02/2016 All rights reserved.
Function:
and in closed loop, the encoder measures
the speed.
Function:
greater than the value set in
parameter H-27 Tracking Error Ramping while
ramping is permissible.
Function:
parameter H-27 Tracking Error Ramping and
parameter H-28 Tracking Error Ramping Timeout
are still active.
Function:
NOTICE
This parameter is only available in the
flux control principle.
Select how the frequency converter reacts
when the motor speed monitor-function
detects overspeed or wrong rotation direction.
When the motor speed monitor is active, the
frequency converter detects an error if the
following conditions are true for a time period
specified in parameter H-32 Motor Speed
Monitor Timeout:
•
The actual speed differs from the
reference speed in
parameter DR-48 Speed Ref. After
Ramp [RPM].
•
The difference between the speeds
exceeds the value in
parameter H-31 Motor Speed Monitor
Max.
In speed closed loop, the actual speed is the
feedback from the encoder measured during
the time defined in parameter PI-06 Speed PID
Lowpass Filter Time. In open loop, the actual
speed is the estimated motor speed.
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