Servo Encoder Feedback Cable – Screened PUR Types

A servo encoder feedback cable carries position, speed or resolver signals between a motor feedback device and its controller. These screened PUR constructions combine flexible copper conductors with signal cores or twisted pairs. Select Feedback-CP, Feedback-CP(I) or SL 803 C to match the feedback circuit and installation route.

Feedback-CP uses polypropylene insulation and a green PUR sheath, with a 300 V peak operating voltage. Feedback-CP(I) uses TPE insulation and an orange PUR sheath, rated 300/300 V. Both constructions use an overall tinned copper braid and suit machine tools and cable chains under medium mechanical stress. SL 803 C uses polypropylene insulation, a grey PUR sheath and configuration-specific screening for incremental transmission and related feedback connections; its listed nominal voltage is 250 V.

The three size tables preserve each signal arrangement, including mixed conductor areas and screened groups. Match the number of pairs, auxiliary cores and individual screens to the equipment circuit before selecting the outside diameter. The shield termination and connector pin assignment should follow the drive and feedback-device requirements.

For a TEBAOFLEX quotation, provide the required configuration, cable length, feedback device, connector or pinout drawing and installation method. For moving service, include the bending radius, travel, speed and cycle requirement. Use the related servo power and control cable pages when the same machine also requires a separate motor supply connection.

Explore the industrial cable range for related configurations.

When pairing screened PUR servo encoder feedback cables with motor power or control leads inside dynamic drag chains, compare these servo cable constructions: SERVO 55700 / 60700 CY Composite Servo Cable (composite servo cable integrating main motor power cores and individually screened brake/control pairs); FD 300/500 V PUR Servo Control Cable (300/500 V PUR continuous-flex control cable for auxiliary actuator and sensor loops in cable tracks). Match minimum bend radius, travel acceleration, and tinned-copper braid coverage across all drag-chain lines.

Construction

All three families use bare copper conductors and a PUR outer sheath. Insulation, core grouping and local screens vary with the selected configuration. The illustration represents SL 803 C 3×(2×0.14C)+2×1: three screened signal pairs and two larger auxiliary cores under an overall braid.

Applications

Choose the signal configuration and motion conditions together so that the feedback connection matches the controller, sensor and cable route.

• Encoder and resolver feedback connections between servo motors and controllers.
• Position and speed feedback in machine tools and automated production equipment.
• Feedback-CP and CP(I) for cable chains under medium mechanical stress.
• SL 803 C for pulse generators, speedometers and brake connections in machine and plant engineering.
• SL 803 C flexible connections in cable chains and industrial robot installations, with the route and movement specified for cable selection.

For EMC shield architecture comparisons and 0.6/1 kV shielded motor-power cables running parallel to encoder feedback lines, review these references: Spiral Shield vs Braided Shield: Tinned Copper Construction Compared (engineering comparison of 85% tinned-copper braided shields vs spiral shields under millions of flex cycles); FD 600/1000 V Shielded Servo Cable (600/1000 V low-capacitance shielded servo power cable for PWM inverter-fed drive motors). Verify twisted-pair capacitance and supply-sense conductor cross-sections against your encoder protocol.

Specifications

All conductor areas in the size tables are in mm². For example, 3×(2×0.14C)+2×1 contains three screened signal pairs and two additional 1 mm² cores.

C and D suffixes preserve the screened-group designation in the corresponding configuration. Specify the complete configuration and feedback circuit drawing when ordering.

Feedback-CP peak voltage, CP(I) rated U₀/U and SL 803 C nominal voltage are different voltage descriptions and apply only to the named construction.

D in bend-radius expressions means the cable outside diameter. Cable-chain life depends on the actual radius, stroke, speed, acceleration and installation.

Outside diameters, copper figures and weights are approximate selection data; the quotation identifies the supplied configuration and length.

Standards