128 HX7+ ASD Installation and Operation Manual
Ridethrough Time
Program Protection Retry/Restart
In the event of a momentary power outage, this parameter determines the length
of the Ridethrough time. During a Ridethrough, regenerative energy is used
to maintain the control circuitry settings; it is not used to drive the motor.
The Ridethrough will be maintained for the number of seconds set using this
parameter.
Note: The actual Ridethrough Time is load-dependent.
Direct Access Number — F310
Parameter Type — Numerical
Factory Default — 2.00
Changeable During Run — Ye s
Minimum — 0.00
Maximum — 320.0
Units — Seconds
Disable Forward Run/Disable Reverse Run
Program Frequency Setting Forward/Reverse Disable
This parameter Enables/Disables the Forward Run or Reverse Run mode.
If either direction is disabled (box checked), commands received for the
disabled direction will not be recognized.
If both directions are disabled (both boxes checked), the received direction
command will determine the direction of the motor rotation.
Settings:
0 — Disabled
1 — Enabled
Direct Access Number — F311
Parameter Type — Check Box
Factory Default — Disabled
Changeable During Run — No
Scan Rate
Program Protection Retry/Restart
In the event of a momentary power outage, the output signal of the drive will
cease. Upon restoration of power, the drive will output a low-level signal that
will be used to determine the rotation speed of the rotor.
The low-level signal will start scanning the motor at FH and decrease until it
reaches 0.0 Hz or it matches the signal produced by the turning rotor. Once the
rate of rotation is determined, the drive will provide the normal output to
engage the motor from its present speed.
This parameter determines the rate at which the scanning signal goes from FH
to 0.0 Hz. See
F301 for additional information on this parameter.
Direct Access Number — F312
Parameter Type — Numerical
Factory Default — (ASD dependent)
Changeable During Run — No
Minimum — 0.50
Maximum — 2.50
Lock-on Rate
Program Protection Retry/Restart
After a momentary power outage, the ASD may have to startup into a spinning
motor. The Lock On Rate is the difference between the time that the RPM of
the motor is determined by the ASD and the time that the ASD outputs a drive
signal to the motor.
See F301 for additional information on this parameter.
Direct Access Number — F313
Parameter Type — Numerical
Factory Default — (ASD dependent)
Changeable During Run — No
Minimum — 0.50
Maximum — 2.50
F310 F313
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