Input-Side RFI Filtering for 1336 Drives

The 1336-RFB-30-A4 is specified for selected 1336 PLUS, PLUS II and IMPACT drive configurations. Its role is to reduce radio-frequency conducted emissions travelling through the AC supply and ground wiring.

A Drive-System Component for EMC Maintenance

This filter is used on the AC input side of compatible Allen-Bradley 1336 adjustable frequency drives as part of the installation's conducted-emissions control arrangement.

It may be searched for when an installed filter is damaged or missing, or when an RFI-related issue leads maintenance teams to inspect the drive's input filtering. A missing or incorrectly selected filter can delay commissioning, maintenance, or restoration of the affected drive-controlled machine.

1336-RFB-30-A4 / Technical Data

Listed 1336 Drive Configurations

The manufacturer's filter-selection table lists the following drive ranges for this filter:

Mounting and Electrical Notes

• The specified Figure 2 arrangement mounts the filter and drive together as one assembly using the supplied hardware.
• Maintain a positive electrical bond between the drive and filter at all four corners.
• Connect the filter between the incoming AC supply line and the drive input terminals.
• Input and output power wiring must use conduit or shielding/armor with equivalent attenuation. Bond shielding or armor to the metal bottom plate.
• The filter may cause ground leakage current; provide a solid ground connection.
• Do not use the filter with grounded-delta supplies. The specified AC supply is nominally balanced and grounded with respect to ground.

Reference Publication

Rockwell Automation publication DRIVES-IN000, Input RFI Filters covers filter selection, dimensions, supplied components, mounting diagrams and wiring instructions for the 1336-RFB-30-A4.

Inspection, Delivery & RFQ

Pre-dispatch condition checks and applicable functional inspection; protective shipment packaging. For transit damage or DOA, provide photos and order details for assessment and return authorization. 12-month warranty for covered product defects, subject to quotation terms; misuse, incorrect installation and external damage are excluded.

Questions About 1336-RFB-30-A4

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