Safety Instructions
ACS/ACC/ACP 604/607 AC Drives ACx = ACS/ACC/ACP ix
If there are power factor correction capacitors in parallel with the ACx
600 make sure that the capacitors and the ACx 600 are not charged
simultaneously to avoid voltage surges which might damage the unit.
Output Contactors
If a contactor is used between the output of the ACx 600 and the motor
with DTC control mode selected, the output voltage of the ACx 600
must be controlled to zero before the contactor is opened: ACS 600
units via parameter 21.3 (ACP: 10.4), choose COAST. If RAMP is
selected, the output of the ACS/ACP 600 must be reduced to zero
using Parameter 16.1 by giving zero V DC to the selected digital input.
Otherwise the contactor will be damaged. In scalar control the
contactor can be opened with ACS/ACC 600 running.
Varistors or RC networks (AC) or diodes (DC) should be used to
protect against voltage transients generated by contactor coils. The
protective components should be mounted as close as possible to the
contactor coils. Protective components should not be installed at the
NIOC board terminal block.
Components
Connected to Digital/
Analog Inputs
WARNING! IEC 664 requires double or reinforced insulation between
live parts and the surface of accessible parts of electrical equipment
which are either non-conductive or conductive but not connected to the
protective earth.
To fulfil this requirement, the connection of a thermistor (and other
similar components) to the digital inputs of ACx 600 can be
implemented in three alternate ways:
1.There is double or reinforced insulation between the thermistor and
live parts of the motor.
2.Circuits connected to all digital and analog inputs of the ACx 600
are protected against contact, and
insulated with basic insulation (the same voltage level as the
converter main circuit) from other low voltage circuits.
3.An external thermistor relay is used. The insulation of the relay must
be rated for the same voltage level as the converter main circuit.
Mechanical
Installation
CAUTION! The ACx 607 should only be transported on the original
pallet, or with a proper lifting device using the lifting lugs on top of the
cabinet. The drive is not intended to be lifted by running lines under the
unit. The ACx 607 center of gravity is quite high, and there is the risk of
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