Absolute encoders - SSI Solid shaft ø10 mm with clamping flange Optical singleturn encoders 13 bit ST ATD 2S B14 Y21 Features –– Encoder singleturn / SSI –– Optical sensing –– Resolution: singleturn 13 bit –– Centering alignment ø36 mm, mounting screw hole circle ø48 mm –– Flange socket radial Technical data - mechanical design Voltage supply Size (flange) ø58 mm Shaft type ø10 mm solid shaft (clamping flange) Flange Clamping flange Protection DIN EN 60529 IP 67 (at shaft entrance) Operating speed ≤5000 rpm (mechanical) ≤8000 rpm (electric) Starting torque ≤0.05 Nm (+20 °C) Shaft loading ≤40 N axial ≤60 N radial Materials Housing: aluminium Shaft: stainless steel Operating temperature -30...+85 °C Relative humidity 90 % non-condensing Resistance DIN EN 60068-2-6 Vibration 10 g, 55-2000 Hz DIN EN 60068-2-27 Shock 30 g, 11 ms Weight approx. 350 g Connection Connector M16, 7-pin 10...30 VDC Reverse polarity protection Yes Consumption w/o load ≤50 mA (24 VDC) Interface SSI Function Singleturn Steps per turn 8192 / 13 bit Sensing method Optical Code Gray Code sequence CW: ascending values with clockwise sense of rotation; looking at mounting surface Output stage SSI data: linedriver RS485 Interference immunity DIN EN 61000-6-2 Emitted interference DIN EN 61000-6-3 1 www.baumer.com/motion 7/10/2013 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. ATD 2S B14 Y21 with clamping flange Absolute encoders - SSI Solid shaft ø10 mm with clamping flange Optical singleturn encoders 13 bit ST ATD 2S B14 Y21 Part number ATD 2S B14 Y21 13 SS GR D1SR7 M 10 IP65 Protection IP65 IP 65 Flange / Solid shaft 10 Clamping flange / ø10 mm Operating temperature M -30...+85 °C Connection D1SR7 Flange socket type 1, pin contacts, radial, 7-pin Output signals GR Gray code Interface SS Serial SSI Resolution 13 13 bit singleturn Data transfer T=1/f tm clock bit n bit n-1 bit 3 bit 2 Clock frequency f 80...1000 kHz Duty cycle of T 40...60 % Delay time tv 150 ns Monoflop time tm 20 µs + T/2 Clock interval tp 26 µs bit 1 Subject to modification in technic and design. Errors and omissions excepted. tv 2 www.baumer.com/motion 7/10/2013 data Absolute encoders - SSI Solid shaft ø10 mm with clamping flange Optical singleturn encoders 13 bit ST ATD 2S B14 Y21 Trigger level Terminal assignment SSI Circuit ConnectorAssignment SSI-Clock Receiver RS485 Pin1GND SSI-Data Linedriver RS485 Pin2data+ Pin3dataPin4clock+ Terminal significance Pin5clock- GND Encoder ground connection relating to UB. Data+ Positive, serial data output of differential linedriver. Data- Negative, serial data output of differentiallinedriver. Clock+ Positive SSI clock input. Clock+ together with clock- forms a current loop. A current of approx. 7 mA towards clock+ input means logic 1 in positive logic. Clock- Negative SSI clock input. Clock- together with clock+ forms a current loop. A current of approx. 7 mA towards clock- input means logic 0 in positive logic. Pin6– Pin7UB 2 3 7 1 4 5 6 Subject to modification in technic and design. Errors and omissions excepted. Encoder supply voltage. Dimensions 3 71 3 ø48 M4x8 ø0.08 0.03 A ø58 9. 17.5 19 0.08 A 12 0° ø36f8 ø10f6 ø52.5 A 10 58.5±1 028- 7 Y21 3 www.baumer.com/motion 7/10/2013 UB Absolute encoders - SSI Solid shaft ø10 mm with clamping flange Optical singleturn encoders 13 bit ST 4 www.baumer.com/motion 7/10/2013 Subject to modification in technic and design. Errors and omissions excepted. ATD 2S B14 Y21