Absolute encoders - SSI Blind hollow shaft ø4 mm Magnetic singleturn encoders 12 bit ATD 07S A 4 Features –– Encoder singleturn / SSI –– Magnetic sensing –– Resolution: singleturn 12 bit –– Blind hollow shaft ø4 mm –– Cable output radial –– Clamping ring torsion-proof Technical data - mechanical design Voltage supply Size (flange) ø24 mm Reverse polarity protection Yes Shaft type ø4 mm (blind hollow shaft) Consumption w/o load ≤40 mA (24 VDC) Protection DIN EN 60529 IP 65 Interface SSI Operating speed Function Singleturn ≤10000 rpm (mechanical) ≤10000 rpm (electric) Steps per turn 4096 / 12 bit Starting torque ≤0.008 Nm (+20 °C) Sensing method Magnetic Materials Code Gray Housing: aluminium Shaft: stainless steel Code sequence CW: ascending values with clockwise sense of rotation; looking at mounting surface Operating temperature -20...+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 100 g, 11 ms Weight approx. 50 g Connection Cable 1 m Motor shaft tolerance 0.25 mm axial 0.1 mm radial Mounting kit 101 Output stage 8...26 VDC SSI data: linedriver RS485 1 www.baumer.com/motion 7/10/2013 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. ATD 07S A 4 with blind hollow shaft Absolute encoders - SSI Blind hollow shaft ø4 mm Magnetic singleturn encoders 12 bit ATD 07S A 4 Part number ATD 07S A 4 12 SS GR KR1 S 4 IP65 101 Mounting kit 101 Mounting accessory kit 101 Protection IP65 IP 65 Blind hollow shaft 4 ø4 mm Operating temperature S -20...+85 °C Connection KR1 Cable 1 m, radial Output signals GR Gray code Interface SS Serial SSI Resolution 12 12 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 Blind hollow shaft ø4 mm Magnetic singleturn encoders 12 bit ATD 07S A 4 SSI Circuit ATD 07S A 4 SSI-Clock Receiver RS485 Core colour Assignment SSI-Data Linedriver RS485 green clock- yellow clock+ grey data+ pink data- Terminal significance UB Encoder supply voltage. GND Encoder ground connection relating to UB. red UB Data+ Positive, serial data output of differential linedriver. blue GND transparent Shield/Housing 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. Subject to modification in technic and design. Errors and omissions excepted. Terminal assignment Dimensions flexible torquesupport 24 ø2.2 ø24 option: cable, axial, ... m KA... ø33 ø2 9 max. 8 1 cylinder head screw DIN 912 - M1.6x6 12.9 A/F1.5 2.95 tightening torque max. 0.20 Nm ø4H6x9 3 spacers ø4g6 M2 mounting side (proposition) cable, radial, ... m KR... mounting kit 101 (standard) 038- 1 3 www.baumer.com/motion 7/10/2013 Trigger level Absolute encoders - SSI Blind hollow shaft ø4 mm Magnetic singleturn encoders 12 bit 4 www.baumer.com/motion 7/10/2013 Subject to modification in technic and design. Errors and omissions excepted. ATD 07S A 4