68 EAV64301 01/2015
Single or Three-phase Power Supply - Diagram With Downstream Contactor
If a Run command is executed while the downstream contactor between the drive and the motor is still
open, there may be residual voltage at the output of the drive. This can cause an incorrect estimation of
the motor speed when the contacts of the downstream contactor are closed. This incorrect estimation of
the motor speed can lead to unanticipated equipment operation or to equipment damage.
Connection diagrams conforming to standards EN 954-1 category 1 and IEC/EN 61508 capacity SIL1,
stopping category 0 in accordance with standard IEC/EN 60204-1.
(1) Use digital output R1 set to operating state Fault to switch Off the product once an error is detected.
Safety Function STO
All details related to the STO safety function activation are given in the Safety Function Manual.
Sensor Connection
It is possible to connect either 1 or 3 sensors on terminals AI2 or AI3.
WARNING
UNANTICIPATED EQUIPMENT OPERATION OR EQUIPMENT DAMAGE
If a downstream contactor is used between the drive and the motor, the contacts between the motor and
the drive must be closed before a Run command is executed.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
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