Lenze S94P01G Position Servo - Manual (Page 19)

S94P01G
17
Installation
3.3 Line Filtering
In addition to EMI/RFI safeguards inherent in the PositionServo design, external filtering
may be required. High frequency energy can be coupled between the circuits via
radiation or conduction. The AC power wiring is one of the most important paths for both
types of coupling mechanisms. In order to comply with IEC61800-3:2004, an appropriate
filter must be installed within 20cm of the drive power inputs.
Line filters should be placed inside the shielded panel. Connect the filter to the
incoming power lines immediately after the safety mains and before any critical control
components. Wire the AC line filter as close as possible to the PositionServo drive.
NOTE
The ground connection from the filter must be wired to solid earth
ground, not machine ground.
If the end-user is using a CE-approved motor, the AC filter combined with the
recommended motor and encoder cables, is all that is necessary to meet the EMC
directives listed herein. The end user must use the compatible filter to comply with CE
specifications. The OEM may choose to provide alternative filtering that encompasses
the PositionServo drive and other electronics within the same panel. The OEM has this
liberty because CE requirements are for the total system.
3.4 Heat Sinking
The PositionServo drive contains sufficient heat sinking within the specified ambient
operating temperature in its basic configuration. There is no need for additional heat
sinking. However, the user must ensure that there is sufficient clearance for proper air
circulation. As a minimum, an air gap of 25 mm above and below the drive is necessary.
3.5 Line (Mains) Fusing
External line fuses must be installed on all PositionServo drives. Connect the external
line fuse in series with the AC line voltage input. Use fast-acting fuses rated for 250
VAC or 600 VAC (depending on model), and approximately 200% of the maximum RMS
phase current. Refer to section 2.3 for fuse recommendations.