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.

 

 

Table 12. User Notification codes.

 

 

 

LED

Function

Description

 

 

 

Atn

Autotune active

Atn indicates that the Autotune function is active.

 

 

 

dbOn

DC Braking

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.

 

 

 

 

 

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.

Table 13. H9 ASD Alarms.

LED

LCD

Description

 

Possible Causes

Display

Display

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CM1

Comm1 Error

Internal communications error.

Improperly programmed ASD.

 

 

 

Improper communications settings.

CM2

Comm2 Error

External communications error.

Improperly connected cables.

 

 

 

 

 

 

 

 

E

Emergency Off

Output signal from the ASD is

StopReset pressed twice at the EOI.

 

 

 

 

 

 

terminated and a brake may be

EOFF command received remotely.

 

 

applied if so configured.

ASD reset required.

 

 

 

 

 

 

 

 

MOFF

Main

Undervoltage condition at the

Low 3-phase commercial voltage.

 

Undervoltage

3-phase AC input to the ASD.

 

 

 

 

 

 

 

H9 ASD Installation and Operation Manual

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Toshiba H9 operation manual User Notification Codes, Alarms, Atn, DbOn