ABB ACS880-07, Hardware Manual

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The settings of the FSO-xx are at default when delivered from the factory. The wiring of the
external safety circuit and configuration of the FSO-xx module are the responsibility of the
machine builder.
The FSO-xx reserves the standard Safe torque off (STO) connection of the inverter control
unit. STO can still be utilized by other safety circuits through the FSO-xx.
For wiring instructions, safety data and more information on the functions provided by the
FSO-xx, refer to its manual. See
FSO-12 safety functions module user’s manual
(3AXD50000015612 [English]).
Implementing the Power-loss ride-through
Implement the power-loss ride-through function as follows:
• Check that the power-loss ride-through function of the inverter unit is enabled with
parameter
30.31 Undervoltage control in the ACS880 primary control program.
• Make sure that the control of the main contactor/breaker either keeps the contactor
closed over the short power break, or closes it after the break automatically.
WARNING!
Make sure that the automatic re-connection of the input power does not cause
any danger. If you are in doubt, do not implement the Power-loss ride-through
function.
WARNING!
Make sure that the flying restart of the motor will not cause any danger. If you are
in doubt, do not implement the Power-loss ride-through function.
￭ Units with main contactor (F250)
The main contactor of the drive opens in a power-loss situation. When the power returns,
the contactor closes. However, if the power-loss situation lasts so long that the drive trips
on undervoltage, it must be reset and started again to continue operation. If the power-loss
situation lasts so long that the auxiliary power buffer module runs out, the main contactor
remains open and the drive operates only after reset and a new start.
With external uninterruptible control voltage (G307), the main contactor remains
closed in power-loss situations. If the power-loss situation lasts so long that the drive trips
on undervoltage, it must be reset and started again to continue operation.
Implementing a bypass connection
If bypassing is required, employ mechanically or electrically interlocked contactors between
the motor and the drive and between the motor and the power line. Make sure with
interlocking that the contactors cannot be closed simultaneously. The installation must be
clearly marked as defined in IEC/EN 61800-5-1, subclause 6.5.3, for example, “THIS
MACHINE STARTS AUTOMATICALLY”.
Bypass connection is available as a factory-installed option for certain cabinet-built drive
types. Consult ABB for more information.
90 Guidelines for planning the electrical installation