Power Electronics SD 300 Series, Getting Started Manual

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SD300 POWER ELECTRONICS
68
POWER CONNECTIONS
It is recommended to use shielded cable for control signals and to follow
recommendations included in Wiring Recommendations section.
CAUTION
Select communication and control system according to the drive EMC
environment.
Otherwise, systems could suffer from interferences due to a
low EMS level.
Protections
Safety Stop Function
Safe Torque Off (STO) allows the drive output to be disabled so that the
drive cannot provide power or generate torque in the motor.
The Safe Torque Off function meets EN ISO 13849-1 PLd and EN 61508
SIL2 (EN60204-1, stop category 0). This feature is standard and enables
compliance with current safety standards. See
“STO” point, inside
“CONTROL CONNECTION” section for further information.
Ground Fault Protection
The drive is equipped with an internal software, the ground fault protective
function protects the drive against input and output unbalanced currents.
For further information, see the Programming and Software Manual.
This function is not intended to work as a safety or fire protection, so an
external protection must be provided to ensure that a substantial ground
fault current is promptly interrupted. The SD300 drives are compatible to
operate with Type B RCDs, if it is required. The EMC filters and long motor
cables increase the ground leakage currents, so the threshold response
of the protection should be adjusted to suit the surrounding plant
conditions. For additional information, contact with Power Electronics.