Ferrite rings
Metallic
cabinet wall
Shield connected
to ground
Motor cable
PE
cabinet wall
Shield connected
to ground
e30bg998.11
Illustration 19: Installation of CM Cores on Cables Connected in Parallel
As losses of common-mode cores are low, the expected temperature of the core is below 60 °C (140 °F) under normal circumstances.
Thus common-mode cores can also be accommodated inside the motor terminal box. If cores cannot be tted inside the drive hous-
ing or the motor terminal box, they can be placed in an external cabinet close to the motor.
Illustration 20: Mounting of CM Cores Inside the Motor Terminal Box
To ensure minimal bearing currents in the motor, Danfoss recommends ordering the drive with output motor lters as a power op-
tion.
5.2 Functional Safety
5.2.1 Protection of Personnel and Equipment
Danfoss AC drives oer functional safety solutions for smart machine design. The VLT AQUA Drive has Safe Torque O (STO) built-in
as an option. Along with other safety functions, STO enhances application safety. The drive-based functional safety oering com-
plies with the requirements of international standards and requirements, including European Union Machinery Directive
2006/42/EC.
The STO function complies with ISO 13849-1-PL d and SIL2 according to IEC 61508/IEC 62061.
AJ300847815559en-000101 / 130R033734 | Danfoss A/S © 2020.09
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VLT® AQUA Drive FC 202
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