Product Description:

The 8ECR0020.1121C-0 is a pre-assembled signal and power lead from B&R Automation that belongs to the ACOPOS P3 Cables series. It is intended to link ACOPOS P3 servo drives to matching motor or I/O modules so that encoder feedback and low-level control signals are transmitted with minimal electrical noise. The cable integrates shielding, rugged insulation, and an industrial circular connector, allowing it to function reliably on moving machine axes inside automated production lines.

The electrical design starts with a conductor size of 3x 2x 24 AWG, produced with tinned-copper stranded conductors to keep resistance down to ≤86 Ω/km. Insulation resistance is rated above 200 MΩ·km, so leakage current remains very low over extended cable lengths. Dielectric strength is verified at 1.5 kV in the wire-to-wire test, providing headroom for the differential encoder voltages present in servo applications. Dynamic motion capability is confirmed for ≥3,000,000 flex cycles when the cable is routed in an energy chain. A dual overall shield made of copper braid and foil limits crosstalk between the six internal signal pairs, while the PUR outer jacket resists cutting oils and abrasion.

For quick installation, the assembly terminates in a 12-Pin Female Springtec Circular connector that houses 12 contacts yet allocates 6 signal lines to encoder channels, leaving the remaining positions for auxiliary supply. Operation in cable carriers requires a moving bend radius of ≥50 mm, and the overall PUR sheath with copper shielding delivers an ingress protection rating of IP66/IP67 against dust and high-pressure washdown. The unshielded conductor pairs use special thermoplastic insulation, and the foil-plus-braid screen helps reduce noise coupling during signal transmission. The 12-contact insert also supports straightforward connection without separate backshell work.