8 Errors and Remedies
8 - 4
Drive Programming User’s Manual (I580-E2)
This section describes the alarm codes that are specific to the Drive Programming, as well as the
causes and remedies.
For other errors, refer to the MX2 User's Manual (I570-E2) or the RX User's Manual (I560-E2).
8-1-3 Alarm Code List
Alarm
code
Alarm
(cause of
inverter trip)
Possible cause Check Remedy
E43
Invalid command
The terminal PRG was
turned ON although no
program was downloaded
into the inverter.
Upload the program and
check if it actually exists in
the inverter.
Create the program again
and download it to the
inverter.
E44 Nesting count
error
A subroutine is nested
over eight levels.
Upload the program and
check the number of nest-
ing levels.
Correct the program so
that the number of nesting
levels is eight or less.
The “for next” command is
nested over eight levels.
The “if” command is
nested over eight levels.
E45
Command error 1
The jump destination of
the “goto” command
points to the “next” com-
mand that terminates the
“for” or other loop.
Check if the jump destina-
tion of the “goto” com-
mand is an command that
terminates a loop.
Correct the jump destina-
tion of the “goto” command.
The variable referenced
through U(i), etc. could not
be found.
Check the numeric value
specified for U(i).
00 i 31
Correct the variable value
for U(i), or, restrict the
data range of the variable
for U(i).
A four arithmetic operation
results in the following
error:
Overflow, underflow, or
division by zero
Check the program and
identify the command
which causes overflow,
underflow, or division by
zero.
Correct the program so
that its four arithmetic
operation does not cause
overflow, underflow, or
division by zero.
The “ChgParam” com-
mand results in the follow-
ing error:
• Change to a parameter
that does not exist
• The written value is out
of the setting range
• Change of a parameter
value that cannot be
changed during inverter
operation
• Change of a parameter
value that is protected
against change by the
Soft Lock Selection
(when this setting is
enabled)
• Check the parameter or
the value to write to the
parameter.
• In the case that an error
occurs during inverter
operation, check if the
parameter can be
changed during inverter
operation.
• Check the setting of the
Soft Lock Selection
(b031).
• Correct the parameter
or the value to write to
the parameter so that it
is within the setting
range.
• Disable the soft lock
function.
• If the parameter can be
changed during opera-
tion, change the setting
of the Soft Lock Selec-
tion (b031) to 10 to
enable a parameter
change during inverter
operation.