H7 Codes And Error Messages; Troubleshooting And Interpreting H7 Error Messages - Toshiba H7 Operation Manuals

H7 Codes and Error Messages

Table 9 lists the User-notification codes and System Status Indicators, and suggests an associated
course of action to correct system malfunctions.
The user-notification codes appear in the top right corner of the Frequency Command screen while the
associated function is active.
Troubleshooting and Interpreting H7 Error
Messages
Note: The listed codes may only appear briefly before displaying the ASD Fault screen for
incurred trips. To view trip information, see
operating without the RTC option and before resetting the ASD, the at-trip information
may be viewed from the Monitor screen.
Table 9. H7 Error Codes and System Status Indicator information.
EOI
Function
Display
ATN Autotuning
Clr Clear
DC Braking
DB or
Indicator
DBON
E-10 Sink/Source
Switching Error
Encoder Error
E-12
H7 ASD Operation Manual
Description
This code is displayed
during Autotuning.
This code is displayed when
the Stop key is pressed after
a trip.
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.
This fault results if there is
an improperly positioned
Sink/Source jumper on the
control board or on an
option device.
This fault is the result of an
ASD that is configured to
receive a signal from a
shaft-mounted encoder and
no signal is being received
while running.
Viewing Trip Information on pg. 177
Possible Causes
• Sink/Source jumper of the
control board is in the
wrong position.
• Sink/Source configuration
of an option device is
incorrect.
• Disconnection at the
Encoder circuit.
• Motor is stopped and is
generating torque via torque
limit control.
• ASD is not configured
properly.
. When
Corrective Action
• Ensure that the Sink/
Source jumper of the
control board of the ASD
in the correct position.
• Ensure that the switch
settings, configuration,
and the connections to the
option devices are correct
and secured.
• Ensure that the encoder
connections are correct
and secured.
• Ensure that the PG
settings are correct for the
application (Program ⇒
Feedback Parameters ⇒
PG Settings).
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