Rockwell Automation 1336 8A-48A Fiber Industry - Manual (Page 77)

5–11 Programming
[Sync Time]
The time it takes for the drive to change from the old
frequency to the new frequency, once the Sync input
is given.
Parameter Number 22
Parameter Type Read and Write
Display Units / Drive Units 0.1 Second / Seconds x 10
Factory Default 0.0 Sec
Minimum Value 0.0 Sec
Maximum Value 6000.0 Sec
[Ride Thru Mode]
Selects one of five methods to detect/respond to a
line loss.
Parameters associated with [Ride Thru Mode]
include; [Line Loss Fault], [Low Bus Fault] and [Ride
Thru Time].
Parameter Number 213
Parameter Type Read and Write
Factory Default “LoBus>Off”
Units Display Drive
“LoBus>Off” 0 If bus voltage drops below line loss
threshold, output is disabled & line
loss alarm bit is set. See
“Input>Stop” for recovery profile.
“Input>Off” 1 Similar to “0,” pulse input is used as
signal for line loss instead of bus
voltage drop. If input is energized,
processor will be interrupted, output
disabled & line loss alarm bit set.
Also occurs if bus voltage drops
below 388V. If input is de-energized
& bus voltage > 388V, drive will
recover as in “0” above.
“LoBus>Decel” 2 Line loss alarm set as in “0,” but
output is not disabled. The bus
voltage is regulated by manipulating
the output frequency to regenerate
energy from the load. The bus
voltage is regulated to approximately
15% below the nominal bus voltage.
If drive reaches 0 Hz. or the bus
drops below minimum, output is
disabled. If bus rises above recovery
value, line loss alarm bit is cleared.
Drive attempts to accel back to the
commanded frequency.
“Input>Decel” 3 Similar to “2,” but uses the pulse
input as a signal for line loss.
“Input>Stop” 4 Similar to “3,” no attempt made to
regulate decel rate for a specific bus
voltage. Drive decels to stop using
[Ride Thru Time]. Intended for
multi-drive common bus applications.
This should be treated as a Stop
command, that is, it will not recover if
power returns.
[Ride Thru Time]
Used in conjunction with [Ride Thru Mode]. Sets the
decel time that will cause power to flow from the
motor to the drive (regeneration). Similar to [Decel
Time 1].
Rate of Deceleration = [Maximum Freq]
[Ride Thru Time]
Important: Only applies to (Input>Stop) above.
Parameter Number 214
Parameter Type Read and Write
Display Units / Drive Units 0.1 Second / Seconds x 10
Factory Default 0.0 Sec
Minimum Value 0.0 Sec
Maximum Value 6000.0 Sec
[Run/Accel Volts]
Reduces the voltage command by a percentage, when
the drive is at a steady state. This can be used to re-
move any boost applied when operating at low speeds.
The default value of 100% disables the feature.
Parameter Number 215
Parameter Type Read and Write
Display Units / Drive Units % / %
Factory Default 100%
Minimum Value 50%
Maximum Value 100%
Setup