Toshiba H9 operation manual F628 F630

188 H9 ASD Installation and Operation Manual
Undervoltage Trip Detection Time
Program ⇒ Protection ⇒ Undervoltage/Ridethrough
This parameter sets th e time that the underv oltage condition must exist to cause
an Undervoltage trip.
This parameter is ena bled at F627.
Direct Access Number — F628
Parameter Type — Numeri cal
Factory Default — 0.03
Changeable During Run — No
Minimum — 0.01
Maximum — 10.00
Units — Seconds
Regenerative Power Ridethrou gh Control Level
Program ⇒ Protection ⇒ Undervoltage/Ridethrough
This parameter is activated during regeneration. It is used to set the low end of
the DC bus voltage threshold that, once the bus voltage drops below this
setting, activates th e setting of F302 (Ridethrough Mode).
Activation may be the result of a mom entary power loss or an excessive load on
the bus voltage.
During a Ridethrough, regenerative energy is used to mai ntain the control
circuitry settings for the du r at io n o f th e Ridethrough; it is not used to drive the
motor.
The motor(s) of the system are stopped and then restarted automatically or may
continue seamlessly if so configured.
See F302 for more information on this parameter.
Note: This parameter setting may in crease deceleration times.
Direct Access Number — F629
Parameter Type — Numeri cal
Factory Default — (ASD-dependent)
Changeable During Run — No
Minimum — 55
Maximum — 100
Units — %
Brake Answer Wait Time
Program ⇒ Protection ⇒ Special Protection Parameters
This parameter is use d in conjunction with t he discrete input termi nal setting
Brake Answerback Input (see Table 5 on pg. 236 for more information on this
feature).
After activating the discr et e in pu t terminal Braking Request, the setting of this
parameter starts a count-down timer in whi ch 1) a Brake Answerback Input
response must be received or 2) the brake must r elease before the timer expires.
Should this timer setting expire before the Brake Answerback Input is
returned or the brake releases, a Brake Fault (E-11) is incurred. Other wise, the
brake releases and normal motor operations resume.
Direct Access Number — F630
Parameter Type — Numeri cal
Factory Default — 0.0 (Disabled)
Changeable During Run — Yes
Minimum — 0.0 (Disabled)
Maximum — 10.0
Units — Seconds
F628 F630