
Technical Articles

This patented model of servo motor/VFD EMI filter uniquely combines both motor and AC filtering in one small enclosure providing complete EMI filtering for a servo motor or VFD. If you want only motor filter please consider SF20031 (3A), SF20101 (10A), or SF20201 (20A) models.

Specification
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Optional DIN-rail mount
"We tested the servo filter on another system, this time with Kollmorgen motors. We saw another significant reduction in noise on our signal" (P.M.,U.K.)
All specifications are subject to change without notice
If you are not sure which specific model would work with your drive/motor, send us a legible photo of drive and/or motor label and if you know, the specific models
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No mechanical attachments
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No changes in software
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No adjustments
Basic Connections and Performance of Servo/VFD Motor Filter SF20032
Connections of AC Mains Filter Section


Connections of Motor Filter Section




Ground Current Reduction with SF Series Motor Filters
Pulse Edge Modification
AC Voltage Reduction with SF20032

Mounting Dimensions
SF20031, SF20032 and SF20101
Click on drawing to enlarge
DIN Rail Mount Option

This filter is available with DIN rail mount. To the left is shown back of SF20031, SF20032 and SF20101 filters with DIN rail mount.
For DIN rail mount add "-N" to the model number: SF20032-N
Application Notes
Filters for Servo Motors and VFD
Practical Aspects of Managing EMI-Caused EOS in IC Handlers and Similar Equipment
Measurements of Conducted Emission in the Manufacturing Environment
EMI-Generated EOS in a Wire Bonder
Mitigating EMI Issues in Servo Motors and Variable Frequency Drives
Dealing with EMI in Semiconductor Device Manufacturing
EOS Sources in Automated Equipment
Managing EMI in Back-End IC Manufacturing, TAP Times
EMI-Caused EOS Exposure of Components and its Mitigation
Origins of EOS in Manufacturing Environment and Its Classification