5.3 Description of Function Codes 5.3.5 H codes (High performance functions)
If the inverter detects a minor abnormal state when detecting the error state, the display alternates between the
warning code
*
and operating status monitor (frequency display, etc.), and operation can be continued without
tripping the inverter. Function codes H81, H82, and H83 specify which alarms should be categorized as a “warning.”
*
The alarm causes subject to selection and the display when a warning occurs are shown in the following table.
Cooling fin temperature increased to the trip level.
An error that has occurred in peripheral equipment turned the
external alarm signal THR ON.
Inverter internal overheat
The temperature inside the inverter abnormally has increased.
Charging resistor overheat
The charging resistor temperature rises abnormally due to frequent
power ON/OFF.
Breaking resistor overheat
Estimated temperature of the coil in the braking resistor exceeded
the allowable level.
Motor temperature calculated with the inverter output current
reached the trip level.
Option communication
error
Communications error between the inverter and an option.
An option judged that an error occurred.
RS-485 communications
error (COM port 1, 2)
RS-485 communications error in COM ports 1 or 2.
Speed inconsistency
(excessive speed
deviation)
The status outside the range (d21) for which the speed regulator
deviation (between speed command and estimated speed
value/detected speed) is set continued for equal to or longer than
the set time (d22).
Positioning control error
The deviation overflow value (10 times function code d78) for which
the position deviation was set was exceeded when performing
synchronous control.
Current input wire break
detection
Current input terminals [C1], [C2] (option) signal line break
Failure of the air circulation DC fan inside the inverter
Motor overload early
warning
Early warning before a motor overload
Cooling fin overheat early
warning
Early warning before a heat sink overheat trip
It is judged that the service life of any one of the capacitors (DC link
bus capacitors or electrolytic capacitors on the printed circuit
boards) or cooling fan has expired.
Analog setting frequency wire break
Warning related to PID control (absolute-value alarm or deviation
alarm)
Output torque drops below the low torque detection level for the
specified period.
The motor PTC thermistor on the motor detected overheating.
Inverter life (Cumulative
run time)
The motor cumulative run time reached the specified level.
Inverter life (Number of
startups)
Number of startups reached the specified level.