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Electrostatic Discharge
Precautions
Rectifier Tests
ACS 501 Installation & Start-up Manual
Chapter 6 – Service and Maintenance
This chapter explains procedures for servicing ACS 501 components. It also
includes spare parts information and general technical data.
CAUTION: Electrostatic Discharge (ESD) can damage electronic circuits.
Do not handle any components without following the proper ESD
precautions.
Electrostatic Discharge generated by static electricity can damage the
complimentary metallic oxide semiconductor devices on various drive boards.
It is recommended that you perform these procedures to guard against this
type of damage when circuit boards are removed or installed:
• Wear a wrist type grounding strap that is grounded to the chassis.
• Attach the wrist strap before removing the new circuit board or IGBT from
the conductive packet.
• Remove components from the drive and immediately insert them into their
conductive packets.
The Rectifier Tests are divided into groups according to drive ratings. These
tests tell you if the rectifier is the cause of drive malfunction. Use a multimeter
to test your rectifier in one of two ways:
• With the diode function, if your meter has one, or
• With a resistance function.
Follow the steps in the Diode Test sections only if your multimeter has a
diode test function. If your multimeter does not test diodes, refer to the
Resistance Test sections.
6-1
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