Delta VFD-L User Manual

12
Maintenance and Inspections
Modern AC drives are based on solid state electronics technology, preventive maintenance
is required to operate this AC drive in its optimal condition, and to ensure a long life. It is
recommended to perform a monthly check up of the AC drive by a qualified technician.
Before the check up, always turn off the AC Input Power to the unit. Wait at least 2 minutes
after all display lamps have gone out, and then confirm that the capacitors have fully
discharged.
Periodic Inspection:
Basic check up items to detect if there were any abnormality during the operation.
1. Whether the motors are operating as expected.
2. Whether the installation environment is abnormal.
3. Whether the cooling system is operating as expected.
4. Whether any irregular vibration or sound occurred during the operation.
5. Whether the motors are overheated during the operation.
6. Always check the input voltage of the AC drive with Voltmeter.
Periodic Maintenance:
It is necessary to stop the motor operation during the check up.
1. Tighten and reinforce the screws of the AC drive if necessary, cause it may loose due to
the vibration or changing of temperatures.
2. Whether the conductors or insulators were corroded and damaged.
3. Check the resistance of the insulation with Megaohmeter.
4. Often check and change the capacitors and relays.
5. If use of the AC drive is discontinued for a long period of time, turn the power on at least
once every two years and confirm that it still functions properly. To confirm functionality,
disconnect the motor and energize the AC drive for 5 hours or more before attempting
to run a motor with it.
6. Clean off any dust and dirt with a vacuum cleaner. Place special emphasis on cleaning
the ventilation ports and PCBs. Always keep these areas clean, as adherence of dust
and dirt can cause unforeseen failures.
Fuse and Fuse Breaker (NFB) Specifications:
Model Ampere Rating (A) Manufacturer (Reference)
40W 115V 6.0A Busmann - JJN-6 300V
40W 230V 3.0A Busmann - JJN-3 300V
100W 115V 10.0A Bssmann - JJN-10 300V
100W 230V 6.0A Bssmann - JJN-6 300V

Delta VFD-L Specifications

General

Series	VFD-L
Control Method	V/F Control
Enclosure Rating	IP20
Type	AC Motor Drive
Output Frequency	1.0 ~ 400 Hz
Overload Capacity	150% for 60 seconds
Protection	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit
Braking Unit	Built-in
Communication	RS-485 (Modbus ASCII/RTU)
Operating Temperature	-10°C to 50°C
Storage Temperature	-20°C ~ 60°C
Humidity	90% RH or less (non-condensing)
Altitude	Up to 1000m without derating
Cooling Method	Fan Cooled
Input Voltage	Single-phase 200-240V