SICK BKS09 Series Absolute Draw Wire Encoder 30V, SSI Signal

This draw wire encoder is a Compact absolute position sensor designed to convert linear cable movement into precise digital position information for industrial automation systems. It is suited to applications that require a sealed measurement device with an SSI Interface and a confined installation envelope, offering a straightforward way to monitor linear travel in machinery and equipment.

• SSI communication for robust digital position output
• Measurement range up to 2m for extended linear monitoring
• Repeatability less than or equal to 0.15mm for tight position control
• Linearity within ±0.7mm for accurate measurement across range
• Operating temperature up to 70°C for elevated-temperature environments
• IP52 protection rating for dust and splash resistance

• Suitable for automated material-handling position feedback
• Ideal for cable-actuated travel measurement on gantries
• Used for stroke monitoring in test rigs and fixtures
• Can be used for length measurement in winding machinery
• Suitable for retrofitting existing systems with absolute position feedback

It uses a 12-pin male M23 connector in a radial orientation for power and SSI signalling.

The measuring wire comprises a stranded steel core with a PA12 sheath to combine flexibility and abrasion resistance under repeated cycles.

The unit supports operating speeds up to 3.5m/s and tolerates accelerations up to 20m/s² for dynamic applications.

Typical life is around 800,000 wire extension/retraction cycles, subject to load, environment and installation conditions.