Warnings, Cautions, And Notes - ABB ACH 400 User Manual

Safety Instructions
Warnings, Cautions,
and Notes
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WARNING! Your drive contains dangerous voltages when connected to the
line power. Always check that the ACH 401 is safe, after disconnecting the
power, by measuring the DC bus voltage and line input voltage. Failure to
check voltages could cause death or serious injury. Only a qualified
electrician should carry out the electrical installation.
The DC bus capacitors contain dangerous DC voltage levels (1.35 x V
After disconnecting the supply, wait at least five minutes after the display
readout on the control panel has disappeared before taking any measurements.
Dangerous external control voltages may be present on the relay outputs of
the Electronic Bypass control board.
CAUTION: Electrostatic Discharge (ESD) can damage electronic circuits.
Do not handle any components without following the proper ESD
precautions.
ACH 400 with Electronic Bypass Users Manual
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