User Notification Codes; Trips/Faults - Toshiba Q7 Installation And Operation Manual

User Notification Codes

The User Notification codes appear on the Frequency Command screen while the associated function is
active.
User Notification codes notify the user of active functions that are usually only momentary under normal
conditions and are active for the duration of activation only. User notification events are not error
conditions and only convey active system functions to the user.
Keypad Function
Atn Autotune Active
db or dbOn DC Braking Active

Trips/Faults

A Trip is an ASD response to a Fault (though, Fault and Trip are sometimes used interchangeably). A
Trip is a safety feature that disables the ASD system in the event that a subsystem of the ASD is
malfunctioning.
Listed in Table 12
incurred the system displays the Fault screen. The Fault screen identifies the active Fault.
Fault Screen Display
Inverter (ASD) OL
Autotuning Err
Note: The event that caused the Trip(s) must be corrected or must decrease to less than the threshold
value required to cause the trip to allow for a Reset to be recognized. In the event of multiple
active trips, the trip displayed will remain until all faults are corrected and all trips are cleared.
Q7 ASD Installation and Operation Manual
Table 11
Atn indicates that the Autotune function is active. If the initial
Autotune fails for any reason, an automatic retry is initiated if Other
Motor is selected at
This code conveys that the DC Injection function being carried out.
The display shows db when braking and dbOn when the Shaft
Stationary function is active.
are the possible Faults that may cause a Trip and the possible causes. When a Trip is
Table 12
• Acceleration time is too short.
• DC Injection current is too high.
• V/f setting needs to be adjusted.
• Motor running during restart.
• ASD or the motor is improperly matched to the application.
• Autotune readings that are significantly inconsistent with the configuration
information.
• A non-3-phase motor is being used.
• Incorrect settings at parameter F400, F413, or F414.
• Using a motor that has a significantly smaller rating than the ASD.
• ASD output cabling is too small, too long, or is being housed in a cable tray with
other cables that are producing an interfering EMF.
• Motor is running during the Autotune function.
Description
.
parameter F413
Possible Causes
147