Toshiba ACE-tronics G9 ASD Installation And Operation Manual page 244

F998
Drooping Pulses Allowed
Program  Crane/Hoist  Closed Loop Hoist Control
This parameter sets the number of encoder pulses allowed in the opposite
direction of the commanded direction before a Load Drooping fault occurs.
If commanded to lift (forward) and the load is dropping (reverse or falling), this
condition is annunciated via the Load Drooping fault and indicates that the
requirements of the load are in excess of the capability of the motor.
Encoder Error Detection Time
Program  Crane/Hoist  Closed Loop Hoist Control
Upon receiving a frequency command, should the motor response be anything
other than the commanded frequency for longer than the time set at this
parameter, an encoder error in incurred.
See Figure 32 on pg. 235 for additional information on this parameter.
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Direct Access Number — F998
Parameter Type — Numerical
Factory Default — 350
Changeable During Run — Yes
Minimum — 2
Maximum — 1024
Units — Pulses
Direct Access Number — F999
Parameter Type — Numerical
Factory Default — 0.50
Changeable During Run — No
Minimum — 0.00
Maximum — 2.55
Units — Seconds
ACE-tronics G9 ASD Installation and Operation Manual
F999