User Notification Codes; Alarms - Toshiba H9 Installation And Operation Manual

User Notification Codes

The User Notification codes appear in the top right corner of 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.
LED Function
Atn Autotune active
dbOn DC Braking

Alarms

Table 13 lists the alarm codes that may be displayed during operation of the H9 ASD. Each alarm code
listed is accompanied by a description and a possible cause. In the event that the source of the malfunction
cannot be determined, contact your Toshiba Sales Representative for further information on the condition
and for an appropriate course of action.
The Alarms are listed in the top-down order that they are checked for activation. Only the first to be
detected will be displayed on the Frequency Command screen.
LED LCD
Display Display
CM1 Comm1 Error
CM2 Comm2 Error
E Emergency Off
MOFF Main
Undervoltage
H9 ASD Installation and Operation Manual
Table 12. User Notification codes.
Atn indicates that the Autotune function is active.
This code conveys the DC Injection function being carried out. The display shows db when
braking and shows dbOn when the motor shaft stationary function is being carried out.
Table 13. H9 ASD Alarms.
Description
Internal communications error.
External communications error.
Output signal from the ASD is
terminated and a brake may be
applied if so configured.
Undervoltage condition at the
3-phase AC input to the ASD.
Description
Possible Causes
• Improperly programmed ASD.
• Improper communications settings.
• Improperly connected cables.
• Stop|Reset pressed twice at the EOI.
• EOFF command received remotely.
• ASD reset required.
• Low 3-phase commercial voltage.
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