134
H9 ASD Installation and Operation Manual
Regenerative Power Ridethrough Mode
Program
Protection
Under-Voltage/Ridethrough
This parameter determines the motor control response of the drive in the event
of a momentary power outage or under-voltage condition.
During a
Ridethrough
, regenerative energy is used to maintain the control
circuitry settings for the duration of the
Ridethrough
; it is not used to drive the
motor. The motor(s) of the system are stopped and then restarted automatically
if so configured.
In a multiple-motor application, there will be a requirement to synchronize the
stopping and restarting of the motors as not to cause breakage in the product
being processed by the motors stopping/starting at different times (e.g., wire
spools, bobbin winder for textile machines, etc.). Parameters
F317
and
F318
must be setup to synchronize motor operation as to avoid breakage in these
types of applications.
Note:
If used to restart the motors, the Retry setup of
F301
is required.
Note:
The
Jog
function will not operate while in the
Synchronized
Decel/Accel
mode.
Settings:
0 — Off
1 — Ridethrough On
2 — Decel Stop
3 — Synchronized ACC/DEC (TB)
4 — Synchronized ACC/DEC (TB + Power Off)
Ridethrough Setup Requirements
1.
Select the
Ridethrough Mode
at
F302
.
2.
Select the
Ridethrough Time
at
F310
.
3.
Select the
Synchronized Stop/Start Times
at
F317
/
F318
(if required).
Note:
F317
and
F318
are not functional while operating in the
Torque
or
Position
control modes, or for the
Jog Run
function (
F260
).
4.
Set a discrete input terminal to
Power Failure Synchronized Signal
and
activate the terminal to enable the
Synchronized Accel/Decel
function.
5.
Select the
Ridethrough Control Level
at
F629
.
Direct Access Number — F302
Parameter Type —
Selection List
Factory Default —
Off
Changeable During Run —
Yes
F302
F302
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