Heidenhain: Absolute Rotary Encoder 820725-11 (EBI-1135)
Absolute modular rotary encoder (battery-backed multiturn) with inductive scanning without integral bearing

Id. Nr. 820725-11

EBI 1135

Absolute modular rotary encoder (battery-backed multi turn) with inductive scanning without integral bearing

Differentiable revolutions: 65536

Positions per revolution: 262144

Data interface: EnDat22

Output code:Dual

Fault detection signal: Error message "BBMT rotation counter overflow" deactivated

Power supply: Up = 3.6 V ... 14 V; Ubat = 3.6 V (nom.) ... 5.25 V (max.)

Flange version: Synchro flange Ø 36.83 mm, overall length 9.9 mm, centering collar Ø 36.83mm, length 2.45 mm

Shaft:Blind hollow shaft for axial fastening, diameter 6 mm, depth 2.8 mm

Degree of protection: IP 00 (EN 60529)

Operating temperature: -20/+115 °C

Electrical connection: Bent plug connector, double-row, 15-pin

Pin configuration: D740560

Connecting direction: radial

Included part: Screw M3 x16 -A2 ISO 4762 with Tuflok

Heidenhain: Rotary Encoder (EBI 1135 Series)

Inductive Rotary Encoder with Compact Dimensions

In robotics and automation technology, rotary encoders and resolvers serve on servo drives as feedback systems for position and speed control. An increasing number of applications require multi-turn versions of absolute encoders that are low in cost and as sturdy as resolvers, but with features beyond what resolvers can provide. A fast digital serial interface for transmission of a high-resolution absolute position value is used to improve transmission reliability, in particular in environments with high electromagnetic noise potential (e.g. on welding robots). Now the EBI 1135 has expanded the HEIDENHAIN product spectrum of absolute inductive rotary encoders with the EnDat 2.2 purely serial interface.

The absolute multi-turn encoder attains a total resolution of 34 bits (single-turn: 18 bits, multi-turn: 16 bits). The modular design without ball bearing and with a battery-buffered revolution counter permit very compact dimensions. With an overall length of less than 13 mm and a housing outside diameter of only 37 mm, it is one of the world’s smallest rotary encoders and is therefore predestined for use on highly dynamic servo motors with small dimensions for automation technology and industrial robots.

The new rotary encoder distinguishes itself in particular with optimized inductive scanning together with a sturdy design. This becomes possible in particular because it functions without optical components (glass scale, LED), which can be handicapped by contamination, vibration, shock and high temperature. The higher permissible axial scanning gap tolerance of ± 0.3 mm, the expanded voltage range of 3.6 to 14 V and compared with multi-turn scanning with a mechanical transmission, the greatly expanded multi-turn value range of 65 536 distinguishable revolutions increase especially the reserves in the application available to the customer.

Specifications: