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Name
Description
Gate array
If an error occurs in the communication
communica-
between the internal CPU and gate array, the
tion error
inverter will trip.
When the phase loss input protection has
been enabled (b006 = 01), the inverter will
Phase loss
trip to avoid damage if an phase loss input is
input
detected. The inverter trips when the phase
protection
loss input continues for about 1 second or
more.
The inverter will trip if the gate array cannot
Main circuit
confirm the on/off state of IGBT because of
error (*4)
a malfunction due to 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,
IGBT error
the inverter will shut off its output to protect
the main circuit element. (After tripping
because of this protective function, the
inverter cannot retry the operation.)
When the phase loss output protection has
been enabled (b141 = 01), the inverter will
Phase loss
trip to avoid damage if an phase loss output
output
is detected. The inverter can detect an phase
protection
loss when the output frequency is from 5 Hz
to 100 Hz.
The inverter monitors the resistance of the
thermistor (in the motor) connected to the
Thermistor
inverter's TH terminal, and will shut off the
error
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 inverter
Emergency
hardware will shut off the inverter output
stop (*5)
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 circuit
Low-speed
in the inverter will detect the overload and
overload
shut off the inverter output. (2nd electronic
protection
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 in
Modbus
Modbus-RTU mode, the inverter will display
communica-
the error code shown on the right. (The
tion error
inverter will trip according to the setting of
"C076".)
Invalid
instruction
The inverter detects errors in the easy
sequence. Refer to SJ700D-3 instruction
Nesting count
manual.
error
Execution
error
*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
Name
digital operator
User Trip
Option 1 error
Option 2 error
Waiting in
under voltage
status
Communica-
tion error
Waiting for
retry
Power-off
Restricted
operation
command
Empty trip
history
5 - 3
Chapter 5 Error Codes
Description
The inverter detects errors in the easy
sequence. Refer to SJ700D-3 instruction
manual.
The inverter detects errors in the option
board mounted in the optional slot 1. For
details, refer to the instruction manual for
the mounted option board.
The inverter detects errors in the option
board mounted in the optional slot 1. For
details, refer to the instruction 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.
The inverter will display the same error
code also during an instantaneous power
failure.
(remark) Inverter trips with under voltage
when this status continues for 40 seconds.
If a problem occurs in the communication
between the digital operator and inverter,
the inverter will display the code shown on
the right. For example disconnection.
When the retry after instantaneous power
failure or tripping has been enabled, the
inverter displays the code shown on the
right while awaiting retry after an
instantaneous power failure or tripping.
The inverter displays the code shown on
the right when the inverter power is turned
off.
When an operation direction has been
restricted by the setting of "b035", the
inverter will display the error code shown
on the right if the operation command
specifying the restricted operation direction
is input.
If the inverter has not tripped before, the
inverter displays
.
Display on
digital operator
to
to
to
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