Chapter 6 Maintenance - Delta HES Series Instructions For Use Manual

The Hybrid Servo Controller 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 Hybrid Servo Controller digital keypad
display. The six most recent faults can be read from the digital keypad or communication.
The Hybrid Servo Controller 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 Hybrid Servo Controller in its optimal condition, and to ensure a long life.
Check your Hybrid Servo Controller regularly to ensure there are no abnormalities during operation and
follows the precautions:
 Wait 5 seconds after a fault has been cleared before performing reset via keypad of
input terminal.
 When the power is off after 5 minutes for
30kW models, please confirm that the capacitors have fully discharged by
measuring the voltage between + and -. The voltage between + and - should be less
than 25VDC.
 Only qualified personnel can install, wire and maintain drives. Please take off any
metal objects, such as watches and rings, before operation. And only insulated tools
are allowed.
 Never reassemble internal components or wiring.
 Make sure that installation environment comply with regulations without abnormal
noise, vibration and smell.

Chapter 6 Maintenance

6-1 Maintenance and Inspections
6-2 Greasy Dirt Problem
6-3 Fiber Dust Problem
6-4 Erosion Problem
6-5 Industrial Dust Problem
6-6 Wiring and Installation Problem
6-7 Multi-function Input/Output Terminals Problem
Chapter 6 MaintenanceHES Series
22kW models and 10 minutes for
6-1