Shenzhen Hpmont Technology Co., Ltd.
Chapter 7 Troubleshooting and Maintenance
HD3Z Series User Manual V1.2
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Periodical Maintenance
Customer should check HD3Z in every 3 to 6 months according to the actual environment so as to
avoid hidden problems and make sure HD3Z runs well for a long time.
General Inspection:
•
Check whether the screws of control terminals are loose. If so, tighten them with a screw driver;
•
Check whether the main circuit terminals are properly connected; Whether the copper bar and
mains cables are overheated;
•
Check whether the power cables and control cables are damaged, check especially for any wear on
the cable tube;
•
Check whether the insulating tapes around the cable lugs are stripped, and for signs of overheating
near terminations;
•
Clean the dust on PCBs and air ducts with a vacuum cleaner.
Note:
1. Dielectric strength test of HD3Z has already been conducted in the factory. Do not do the test again.
Otherwise, HD3Z might be damaged.
2. If insulation test to the motor is necessary, it should be done after the input terminals U/V/W of motor
have been detached from HD3Z. Otherwise, HD3Z will be damaged.
3. For HD3Z that have been stored for a long time, they must be powered up every 2 years. When supplying
AC power to HD3Z, use a voltage regulator to gradually raise the input voltage to rated input voltage at
least 5 hours.
Replacing Damaged Parts
The components that are easily damaged are: Cooling fan and electrolytic capacitors of filters. Their
lifetime depends largely on their application environment and preservation. Users can decide the time
when the components should be replaced according to their service time.
Easily damaged
Cooling fan
Electrolytic capacitors
Life
60, 000 hours
50, 000 hours
Possible cause of
damages
Wear of the bearing, aging of the fan vanes
High ambient temperature, aging of
electrolyte and large pulse current induced by
rapid changing loads
Criteria
After the drive is switched off, check if the
abnormal conditions such as crack existing on
fan vanes and other parts. When the drive is
switched on, check if drive running is normal,
and check if there is any abnormal oscillation
Check if frequent overcurrent or overvoltage
failures occur during drive start-up with load.
Check if there is any leakage of liquids. Check
if the safety valve protrudes. Measure the
static capacitance and insulation resistance
Unwanted Controller Recycling
When disposing HD3Z, pay attention to the following factors:
•
The capacitors may explode if they are burnt.
•
Poisonous gas may be generated when the plastic parts like front covers are burnt.
•
Disposing method: Dispose unwanted controllers as industrial waste.
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