Output Contactors; Mechanical Installation - ABB ACS 601 Hardware Manual

Output Contactors

EMC

Mechanical Installation

ACS/ACC/ACP 601 Drives
600 make sure that the capacitors and the ACx 600 are not charged
simultaneously to avoid voltage surges which might damage the unit.
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.
When used with inductive loads (relays, contactors, motors), the relay
contacts of ACx 600 must be protected with varistors or RC networks
(AC) or diodes (DC) against voltage transients. The protective
components should not be installed at the NIOC board terminal block.
Installing control devices (contactors or relays) or control cables other
than those of the ACS 600 inside the drive enclosure is not acceptable.
Note: If safety switches, contactors, connection boxes or similar
equipment are installed between the drive and the motor, they should
be installed in a metal enclosure in a way that the conduit or motor
cable shielding runs consistently without breaks from the drive to the
motor, so the emission level will be minimized.
CAUTION! The ACx 601 weighs a considerable amount, and should
not be handled by the front cover. The unit should only be placed on its
back. Exercise appropriate care when maneuvering the unit to avoid
damage and injury. Lifting the ACx 601 is much easier and safer with
two people working together.
CAUTION! Make sure that dust from drilling does not enter the
ACx 600 when installing. Electrically conductive dust inside the unit
may cause damage or lead to malfunction.
CAUTION! Do not fasten the ACx 600 by riveting or welding.
WARNING! The cooling air flows and space requirements must be
fulfilled. Special attention must be paid to cooling if units are installed in
confined spaces and user defined cabinets.
Safety Instructions
ACx=ACS/ACC/ACP ix