F302 – Toshiba H9 User Manual
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H9 ASD Installation and Operation Manual
Regenerative Power Ridethrough Mode
Program
⇒
Protection
⇒
Undervoltage/Ridethrough
This parameter determines the motor-control response of the drive in the event
of a momentary power outage or undervoltage 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
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
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 (during power failure)
3 — Synchronized ACC/DEC (TB)
4 — Synchronized ACC/DEC (TB + Power Off)
Ridethrough Setup Requirements
1.
Select the Ridethrough Mode at
2.
Select the Ridethrough Time at
.
3.
Select the Synchronized Stop/Start Times at
(if required).
Note:
and
are not functional while operating in the Torque
or Position control modes, or for the Jog Run function (
).
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
.
Direct Access Number — F302
Parameter Type — Selection List
Factory Default — Off
Changeable During Run — Yes