Error; Codes - Hitachi L700 SERIES Quick Reference Manual

Name Description
Gate array If an error occurs in the communication
communica- between the internal CPU and gate
tion error array, the inverter will trip.
When the phase loss input protection
has been enabled (b006 = 01), the
Phase loss
inverter will trip to avoid damage if an
input
phase loss input is detected. The inverter
protection
trips when the phase loss input
continues for about 1 second or more.
The inverter will trip if the gate array
cannot confirm the on/off state of IGBT
Main circuit
because of a malfunction

error (*4)

noise,short or damage to the main circuit
element.
If instantaneous overcurrent occurs, the
main circuit element temperature is
abnormal, or the main circuit element
drive power drops, the inverter will shut
IGBT error
off its output to protect the main circuit
element. (After tripping because of this
protective function, the inverter cannot
retry the operation.)
The inverter monitors the resistance of
the thermistor (in the motor) connected
Thermistor
to the inverter's TH terminal, and will
error
shut off the inverter output if the motor
temperature rises.
If the EMR signal (on three terminals) is
turned on when the slide switch (SW1)
on the logic board is set to ON, the
Emergency inverter hardware will shut off the
stop (*5) inverter output and display the error code
shown on the right.
Malfunction due to incoming noise,in
case EMR terminal is not ON.
If overload occurs during the motor
operation at a very low speed at 0.2 Hz
or less, the electronic thermal protection
Low-speed
circuit in the inverter will detect the
overload
overload and shut off the inverter output.
protection
(2nd electronic thermal control)
(Note that a high frequency may be
recorded as the error history data.)
If timeout occurs because of line
disconnection during the communication
Modbus
in Modbus-RTU mode, the inverter will
communica-
display the error code shown on the
tion error
right. (The inverter will trip according to
the setting of "C076".)
*4 The inverter will not accept reset commands input via the RS terminal or entered by the STOP/RESET key. Therefore, turn off the
inverter power.
*5 The inverter will not accept the reset command entered from the digital operator. Therefore, reset the inverter by turning on the RS
terminal.
Display on
digital operator
due to
5-3
Chapter 5 Error Codes
Name Description
The inverter detects errors in the option
board mounted in the optional slot 1.
Option 1
For details, refer to the instruction
error
manual for the mounted option board.
The inverter detects errors in the option
board mounted in the optional slot 1.
Option 2
For details, refer to the instruction
error
manual for the mounted option board.
If the input voltage falls, the inverter will
shut off its output, display the code
shown on the right, and wait for the
recovery of the input voltage.
Waiting in
The inverter will display the same error
undervoltage
code also during an instantaneous
status
power failure.
(remark) Inverter trips with under
voltage when this status continues for
40 seconds.
If a problem occurs in the
Communica- communication between the digital
tion error operator and inverter, the inverter will
display the code shown on the right.
When the retry after instantaneous
power failure or tripping has been
Waiting for enabled, the inverter displays the code
retry shown on the right while awaiting retry
after an instantaneous power failure or
tripping.
The inverter displays the code shown
Power-off on the right when the inverter power is
turned off.
When an operation direction has been
restricted by the setting of "b035", the
Restricted
inverter will display the error code
operation
shown on the right if the operation
command
command specifying the restricted
operation direction is input.
If the inverter has not tripped before,the
Empty trip
inverter displays
history
Display on
digital operator
to
to
.