M.1302.8634 Kollmorgen
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The Kollmorgen M.1302.8634 is a servo cable from the Kollmorgen Servo Cables series with hi-flex construction and a length of 30 meters. It uses a 4-pair twisted pair design with 24 AWG gauge and features a D-Sub 15-pin HD male angled connector on the drive side. The cable supports resolver feedback and provides signals for COS, SIN, REF, and TEMP.
Internal Product Review
The M.1302.8634 is a Kollmorgen servo cable built in a Hi-Flex grade for resolver feedback applications. The 4-pair twisted-pair construction supports stable handling of COS, SIN, REF, and TEMP signals in dynamic motion-control installations. An angled D-Sub 15-pin HD male drive connector helps streamline routing at the drive, making M.1302.8634 a strong cable choice for precise servo interconnection.
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Product Description:
The M.1302.8634 is a feedback cable produced by Kollmorgen and supplied through the Kollmorgen Servo Cables series. It links a feedback-equipped servomotor to a compatible drive, carrying low-level position signals and temperature data required for closed-loop motion control in automated machinery. By matching the mating connectors used on AKM and similar motor families, the cable simplifies installation and maintains signal integrity between the motor feedback electronics and the drive’s feedback port. Its dedicated signal paths help the controller monitor rotor position while keeping sensitive feedback data isolated from surrounding power wiring.
This model uses four twisted pairs, so each differential signal travels through its own balanced pair to reduce electromagnetic noise generated by nearby power conductors. The high-flex insulation and jacket withstand repeated dynamic bending inside cable chains without causing conductor fractures. The cable has an overall length of 30 m, providing sufficient reach for standard gantries and long transfer lines while remaining within resolver voltage limits. Its internal conductors are sized at 24 AWG, providing low resistance for the reference excitation while keeping the bundle flexible. At the drive end, an angled 15-pin high-density male D-Sub connector fits into cabinets with limited clearance and locks in place with standard jack screws. This secure connection helps maintain consistent contact pressure during machine vibration and repeated axis movement.
The F1/F2 feedback port on Kollmorgen S300 and AKD drives accepts the cable’s wired pinout without an adapter board. On the motor side, the cable terminates in a straight molded plug that aligns with the feedback inserts used on AKM stator housings. Signal routing supports resolver feedback, allowing the drive to receive sine and cosine channels together with a reference excitation signal. The individual COS, SIN, REF, and TEMP conductors provide dedicated paths for position and temperature information. These paths preserve the phase relationship between the feedback signals, allowing the drive to calculate the absolute rotor angle accurately during dynamic operation. Temperature data also supports compensation and fault detection when motor heat rises under load.
