Bosch Rexroth PL20 Series Servo Drives PL20B-D

Technical Dossier

Product Details And Specifications

Bosch Rexroth PL20 Series Technical Notes

The Bosch Rexroth PL20 series represents a compact, single-axis servo drive platform engineered for precision motion control in demanding industrial environments. Deployed extensively across chemical processing plants, oil refineries, nuclear facility auxiliary systems, and heavy-duty manufacturing lines, the PL20 family occupies a critical position in legacy and mid-generation Rexroth drive architectures. Its modular design, compatibility with SERCOS and analog command interfaces, and robust DC bus architecture made it a standard specification in European and Asian heavy industry installations throughout the 1990s and 2000s. Many facilities continue to operate PL20-based motion systems as part of long-term capital equipment strategies, making reliable spare parts sourcing a persistent operational requirement.

PL20 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the Bosch Rexroth PL20 series. Units are classified by frame size, current rating, and feedback/interface variant.

Compact Single-Axis Servo Drives — B-Frame (Low Power)

• PL20B-D: Compact single-axis servo drive, analog command, resolver feedback, B-frame
• PL20B-D-01: B-frame drive, variant 01, enhanced EMC filter integrated
• PL20B-D-02: B-frame drive, variant 02, extended temperature range rating
• PL20B-T: B-frame, TTL incremental encoder feedback, ±10V command input
• PL20B-T-01: B-frame TTL variant, UL-listed configuration for North American market

Compact Single-Axis Servo Drives — C-Frame (Mid Power)

• PL20C-D: C-frame single-axis drive, resolver feedback, higher continuous current rating
• PL20C-D-01: C-frame, variant 01, integrated braking resistor circuit
• PL20C-T: C-frame, TTL encoder feedback, analog velocity command
• PL20C-T-02: C-frame TTL, variant 02, CE-marked, 400V AC input nominal
• PL20C-S: C-frame, SERCOS I/II digital interface, position control mode

Compact Single-Axis Servo Drives — D-Frame (Higher Power)

• PL20D-D: D-frame resolver-feedback drive, higher peak current, 400V three-phase
• PL20D-T: D-frame TTL encoder variant, suitable for high-inertia load applications
• PL20D-S: D-frame SERCOS interface, synchronized multi-axis coordination capable
• PL20D-S-01: D-frame SERCOS, variant 01, extended I/O terminal block configuration

Power Supply / Regenerative Units (PL20 Compatible)

• PL20-NTZ: DC bus power supply unit, compatible with PL20 B/C/D frame drives, regenerative capable