Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 222)

Chapter 7
Programming Parameters
7-56
Parameter 691 – Tach Switch Select [TACH SWITCH SEL]
Internal units : None
Programming Terminal units: None
Minimum Value: 0
Maximum Value: 1
Default Value: 0
Function: Tach Loss Recovery
Description: This parameter selects the automatic Tach Switchover to
Armature Voltage Feedback feature. When set to a one, a
malfunction of the selected velocity feedback device will cause a
warning to be reported and the drive will continue to run using
Armature Voltage feedback. When set to a zero (default value), a
tach loss condition will cause a soft fault to occur and the drive will
coast stop.
Parameter 692 – Kn Filter
Internal units :
Programming Terminal units:
Minimum Value: –32767
Maximum Value: +32767
Default Value: 512
Description: When using a lead/lag filter and Parameter 631 = 3, the
gain of the filter can be selected. The transfer function G (s) =
[(kn/256) s +
ω
n] / (s +
ω
n) describe the filter.
Parameter 693 – Wn Filter
Internal units :
Programming Terminal units:
Minimum Value: 1
Maximum Value: 500
Default Value: 300
Description: Filter Frequency Break Point (–3db). When using a
lead/lag filter and Parameter 631 = 3, the natural frequency of the
filter can be selected. The transfer function G(s) = [(kn/256) s +
ω
n] /
(s +
ω
n) describe the filter.
Parameter 698 – Auto Tune Current Limit [Auto Tune I Lim]
Internal units : 4096 = 1000H = 100%
Programming Terminal units: %
Minimum Value: .0244%
Maximum Value: 100%
Default Value: 25%
Description: This parameter specifies the armature current that is
applied to the motor during the Velocity motor test and Velocity
system test.
Available in Version 5.01
and Later Firmware