Safety Instructions
ACS/ACC/ACP 601 Frequency Converters ACx = ACS/ACC/ACP v
If an ACx 601 with the integrated EMC filter (code 0 in the type code for
EMC Filters) is installed to unearthed mains (an ungrounded power
system or a high resistance grounded power system (over 30 ohms)),
the mains will be connected to earth potential through the EMC filter
capacitors of the ACx 601. This may cause danger or damage the unit.
Disconnect the EMC filter capacitors before connecting the ACx 601 to
unearthed mains. For detailed instructions on how to do this, please
contact your local ABB distributor.
The motor must not be controlled with the supply disconnecting device;
instead, the and keys of the Control Panel or commands via
the I/O board of the ACx 600 should be used. The maximum number of
charging cycles of the d.c. capacitors of ACx 600 (i.e. power-ups by
applying the mains power) is five in ten minutes.
WARNING! Never connect the mains (line power) to the ACx 600
output. If frequent bypassing is required, mechanically connected
switches or contactors should be employed. Mains (line) voltage
applied to the output can result in permanent damage to the unit.
Operation outside the nominal voltage range should not be attempted,
as overvoltages can result in permanent damage to the ACx 600.
Earth (Ground) Fault
Protective Function
The ACx 600 is equipped with an internal earth fault protective function
to protect the unit against earth faults in the inverter, the motor and the
motor cable. This is not a personal safety or a fire protection feature.
The earth fault protective function of the ACS/ACP 600 can be disabled
by Parameter 30.17 (ACC: 30.11).
The EMC filter of the ACx 600 includes capacitors connected between
the main circuit and the frame. These capacitors increase the earth
(ground) leakage current through the PE connector to the mains (line)
and may cause some fault current circuit breakers to function.
Emergency Stop
Devices
Emergency stop devices must be installed at each operator control
station and at other operating stations where emergency stop may be
required. Pressing the key on the Control Panel of ACx 600 does
not generate an emergency stop of the motor or separate the drive
from dangerous potential.
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