1-6
Maintenance
FRENIC-Mini series features the following facilities useful for maintenance.
Refer to Chapter 3, Section 3.3.5 "Reading Maintenance Information" and the FRENIC-Mini
Instruction Manual, Chapter 7 "MAINTENANCE AND INSPECTION" for details.
• The lifetime of the DC link bus capacitor (reservoir capacitor) can be estimated
The capacitor's condition compared with its initial state can be confirmed.
• Long-life cooling fan
Use of a long-life cooling fan (estimated service life: 7 years for operation at an ambient temperature of
40°C (104°F)) reduces maintenance cost.
• Recording and display of cumulative running time of the inverter
The inverter records and displays the accumulated running time of the inverter itself, the printed circuit
board and cooling fan.
• Alarm history for up to 4 latest alarms
The inverter records detailed information for up to 4 alarms that occurred most recently, which can also be
displayed on the LED.
Refer to Chapter 3, Section 3.3.6 "Reading alarm information."
• Lifetime forecast signal via transistor output
This signal is output when the reservoir capacitor in the DC link bus, the electrolytic capacitors on the
printed circuit board, or the cooling fans have been nearing the end of their service life.
Refer to function code E20 in Chapter 9, Section 9.2.2 "E codes (Extension terminal functions)" for
details.
Interface for peripheral devices and comprehensive protective functions
• All models are equipped with an inrush current suppression circuit.
FRENIC-Mini series features an inrush current suppression circuit as standard in all models to reduce the
cost of peripheral devices such as input magnetic contactor.
• Terminals for a DC reactor (DCR) provided as standard
Terminals for connection of a DCR, which are necessary for suppressing harmonics, are provided as
standard in all models.
• Input/output phase loss protective function
FRENIC-Mini series can detect output phase loss at all times during starting and running. This feature
assists you for keeping operation of your system stable.
• Switchable sink/source
The input/output mode (sink/source) of the digital input terminals can be switched by means of an internal
jumper switch. No engineering change is required in other control devices including PLC.
• Motor can be protected by a PTC thermistor
The motor is protected by PTC (Positive Temperature Coefficient) thermistor which detects the motor's
temperature and stops the inverter before the motor is overheated.
To Next Page
Loading...
