Hitachi SJ Series, User Manual

Page: 607 / 786

18-14
Chapter 18
Tips/FAQ/Troubleshooting
E012 External trip error
When the inverter accepted a signal commanded by
an external device or equipment, the inverter turns
OFF its output. (When external trip function is
selected.)
E013 USP error
This error occurs if an operation command has been
input to the inverter when the power supply is turned
ON. Operation command detection is carried out for
1 second after the power supply is turned ON.
(When USP function is selected.)
Occurrence

Estimated cause(s)

Exemplar measures to be taken
Occurrence

Estimated cause(s)

Exemplar measures to be taken
E012
Error occurred
unintentionally.
• Terminal logics are
reversed.
• Wiring is wrong.
• You need to check the state of operations related to external
devices or external equipment, and re-examine the assignment of
external trip terminal to the inverter input terminal, the setting of a/b
contact, the external trip command via communication, etc.
• A/b contact of terminal can be changed by inverter setting.
Error occurred
unintentionally.
• Operation command
was entered too early.
• Re-examination of the sequence to enter operation command is
required. You need to wait for 2 seconds or longer to enter
operation command after turning ON the power supply.
• You tried to operate with
commands other than
terminal commands.
• When USP is enabled, commands of the operator keypad and
communication commands are treated as errors. You need to wait
for 2 seconds or longer to enter operation command after turning
ON the power supply.
• Operation command
isn’t released.
• You need to release an operation command when turning ON the
power supply.
E013