Hitachi NT2021XA, Instruction Manual

Page: 83 / 84

Chapter 4 Errors and Troubleshooting
4-1
4.1 Errors Specific to the Easy Sequence Function
The table below lists the errors that are specific to the easy sequence function. For other errors in the inverter, refer to
the SJ700 Series Inverter Instruction Manual.
No.
Error (causing
inverter trip)
Factor code
(*1)
Description
1 Invalid instruction E43.*
The inverter assumes an error if you try to download the program that
exceeds capacity, and all programs are not downloaded, or if the
downloaded program includes an invalid instruction code. This error is
detected if the PRG terminal is turned on when the downloaded program
has been destroyed or no program has been downloaded.
2 Nesting count error E44.*
The inverter assumes an error if subroutines, for statements, and/or next
statements are nested in more than eight layers.
3 Instruction error 1 E45.*
- The inverter assumes an error if the jump destination of a goto
statement is not the beginning of a nested for statement but preceded
by the end of a nested next statement.
- The inverter assumes an error if the variable “U (xx)” referenced via
another variable is not found.
- The inverter assumes an error if an arithmetic instruction results in
overflow or underflow (WJ200 Step2 is excluded.), or causes a
division by zero.
- The inverter assumes an error if a chg param instruction causes
reference to a nonexistent parameter, change of a parameter value
outside the setting limits, or updating of a parameter that cannot be
updated during inverter operation.
4 User trip 0 to 9
E50.* to
E59.*
*1 The asterisk (*) in the factor code represents an inverter status code.