Chapter 6 Maintenance - Delta HES Series User Manual

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The AC motor drive has a comprehensive fault diagnostic system that includes several different alarms
and fault messages. Once a fault is detected, the corresponding protective functions will be activated.
The following faults are displayed as shown on the AC motor drive digital keypad display. The six most
recent faults can be read from the digital keypad or communication.
The AC motor drive is made up by numerous components, such as electronic components, including IC,
resistor, capacity, transistor, and cooling fan, relay, etc. These components can't be used permanently.
They have limited-life even under normal operation. Preventive maintenance is required to operate this
AC motor drive in its optimal condition, and to ensure a long life.
Basic check-up items to detect if there were any abnormalities during operation are:
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Chapter 6 Maintenance

Maintenance and Inspections
Wait for five minutes after the Hybrid Servo Controller with power
disconnected with power supply and wait for ten minutes for units with power ≧
30kW and verify that the charging indicator is off. Measure to make sure that the DC
voltage between terminals
inspection.
Only qualified personnel can install, wire and maintain AC motor drives. Please take
off any metal objects, such as watches and rings, before operation. And only
insulated tools are allowed.
Never attempt any alternation of the Hybrid Servo Controller.
Make sure that installation environment comply with regulations without abnormal
noise, vibration and smell.
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Chapter 6 Maintenance|HES Series
~ is lower than DC25V before starting the
6-1
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22kW is
≦
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