12.4 Common Specifications
12-16
Table 12.4-6
Item Explanation Remarks
Braking transistor broken
Stop the inverter detecting the brake transistor abnormality.
(DB transistor built-in type only)
dba
Overspeed protection
• When d35 = 999, stops the inverter if the detected speed is 120% or over of the maximum output
frequency ¯ (d32 or d33). *4 to *7
• When d35 ≠ 999, stops the inverter if the detected speed is greater than or equal to the
maximum output frequency ¯ (d35). *6
• Stops the inverter if the detected speed is 120% or over of 120 Hz. *6
• Stops the inverter if the detected speed is 120% or over of 200 Hz. *7
0s
*11
PG wire break *4, *5, *7 Stop the inverter output if a PG wire break is detected.
pg
Electronic thermal
The inverter is stopped with the electronic thermal function set to protect the motor.
Protects the general-purpose motor inverter over all frequency range.
(The running level and thermal time constant (0.5 to 75.0 min) can be set.)
0l1
to
0l4
PTC thermistor
The PTC thermistor input stops the inverter to protect the motor. Connect the PTC thermistor
between terminals [V2
] and [
11] and set the switch on control print board and the function code.
NTC thermistor
The NTC thermistor detects a motor temperature. Connect the NTC thermistor between terminals
[V2
] and [
11] and set the switch on control print board and the function code.
0h4
NTC thermistor
breaking
Stop the inverter output detecting the built-in motor NTC breaking.
nrb
Motor protection
Overload early
warning
Warning signal (0L) is output at the predetermined level before stopping the inverter with
electronic thermal function. This function exclusively applies to the 1st motor.
Memory error detection
Data is checked upon power-on and data writing to detect any fault in the memory and to stop the
inverter if any.
er1
Keypad communications
error
When the keypad is used to enter run commands to the inverter, this function stops the inverter
upon detecting a communication fault between the keypad and inverter.
er2
CPU error (detection) Stop the inverter detecting a CPU error or LSI error caused by noise.
er3
Option communications
error (detection)
When each option is used, a fault of communication with the inverter main body is detected to stop
the inverter.
er4
Option error (detection) When each option is used, the option detects a fault to stop the inverter.
er5
key priority: Pressing the
key on the keypad or entering the digital input signal will
forcibly decelerate and stop the motor even if the operation command through signal input or
communication is selected.
er6
will be displayed after the stop.
Operation protection
Start check: If the running command is being ordered when switching the running command
method from power-on, alarm reset, or the linked operation, the operation starts suddenly. This
function bans running and displays
er6
.
er6
Tuning error detection
Stop the inverter output when tuning failure, interruption, or any fault as a result of tuning is
detected during tuning for motor constant.
er7
RS-485 communications
error (port 1)
When the inverter is connected to a communications network via the RS-485 port designed for the
keypad, detecting a communications error stops the inverter output.
er8
Speed mismatch or
excessive speed deviation
*4 to *7
Stop the inverter output if the speed deviation (difference between the speed command value and
the feedback value) exceeds the preset value.
ere
Data save error upon
undervoltage
If the data could not be properly saved during activation of the undervoltage protection function,
the inverter displays the alarm code.
erf
Excessive position
deviation *4,*5,*7
Stop the inverter output if the position deviation (difference between the target position and the
current position) exceeds the preset value.
ero
*10
RS-485 communications
error (port 2)
When the inverter is connected to a communications network via the RS-485 port on the control
terminals DX+ and DX-, detecting a communications error stops the inverter output.
erp
Protection
Hardware error
Stop the inverter output upon detecting a malfunction of LSI on the power printed circuit board,
which is mainly caused by noise.
erh
*4 Available under V/f control with speed sensor. (PG option required)
*5 Available under dynamic torque vector control with speed sensor. (PG option required)
*6 Available under vector control without speed sensor.
*7 Available under vector control with speed sensor. (PG option required)
*10 Available in inverters having a ROM version 3000 or later.
*11 Available in inverters having a ROM version 3600 or later.
To Next Page
Loading...
