Absolute encoders - SSI Shaft with clamping or synchro flange Optical singleturn encoder 14 bit GA240, GA241 - SSI Features –– Encoder singleturn / SSI –– Optical sensing –– Resolution: 14 bit –– Clamping flange or synchro flange –– Permanent check of code continuity –– Extreme resistance to shock and vibration –– Encoder with electronic reset Technical data - mechanical design Voltage supply Housing ø58 mm Protection DIN EN 60529 IP 54 without shaft seal IP 65 with shaft seal Operating speed ≤10000 rpm (mechanical) ≤6000 rpm (electric) Rotor moment of inertia 14.5 gcm² Admitted shaft load ≤20 N axial ≤40 N radial Materials Housing: aluminium Flange: aluminium 10...30 VDC Reverse polarity protection Yes Consumption w/o load ≤50 mA (24 VDC) Initializing time (typ.) 20 ms after power on Interface SSI Steps per turn 16384 / 14 bit Absolute accuracy ±0.025° Sensing method Optical Code Gray or binary Code sequence CW/CCW coded by connection Operating temperature Inputs SSI clock Control signals UP/DOWN and zero -25...+85 °C -40...+85 °C (optional) Relative humidity 95 % non-condensing Resistance DIN EN 60068-2-6 Vibration 10 g, 16-2000 Hz DIN EN 60068-2-27 Shock 200 g, 6 ms Output circuit SSI data linedriver RS485 Diagnostic outputs push-pull Interference immunity DIN EN 61000-6-2 Emitted interference DIN EN 61000-6-4 Weight approx. 250 g Diagnostic functions Self-diagnosis Code continuity check E-connection Connector or cable Approval UL approval / E63076 GA240 - SSI Shaft ø10 mm Flange Clamping flange Starting torque ≤0.015 Nm IP 54 ≤0.03 Nm IP 65 GA241 - SSI 1 Shaft ø6 mm Flange Synchro flange Starting torque ≤0.01 Nm IP 54 ≤0.015 Nm IP 65 www.baumerivo.com 29/10/2008 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. GA240 with clamping flange Absolute encoders - SSI Shaft with clamping or synchro flange Optical singleturn encoder 14 bit GA240, GA241 - SSI Part number Clamping flange Synchro flange GA240. 05 A0 A1 11 21 30 32 90 92 GA241. E-connection Connector M23, 12-pin, axial Connector M23, 12-pin, radial Cable 1 m, axial Cable 1 m, radial A0 A1 11 21 Voltage supply / signals 10...30 VDC / gray code 13 bit 10...30 VDC / binary code 13 bit 10...30 VDC / gray code 14 bit 10...30 VDC / binary code 14 bit 30 32 90 92 Flange / Shaft 0 Clamping flange / ø10 mm IP 54 A Clamping flange / ø10 mm IP 65 T=1/f Connectors and cables (page %S) tm clock bit 3 bit 2 bit 1 Female connector M23, 12-pin, less cable Z 130.003 Female connector M23, 12-pin, 2 m cable Z 130.005 Female connector M23, 12-pin, 5 m cable Z 130.007 Female connector M23, 12-pin, 10 m cable Mounting accessories for GA240 - SSI (page %S) Clock frequency f 62.5...1500 kHz Scan ratio of T 40...60 % Time lag tv 150 ns Monoflop time tm 25 µs + T/2 Clock interval tp 30 µs Z 119.006 Eccentric fixing, single Z 119.013 Adaptor plate for clamping flange for modification into synchro flange Z 119.017 Mounting angle for clamping flange Z 119.025 Adaptor plate for clamping flange, mounting by eccentric fixings (order separately) Mounting accessories for GA241 - SSI (page %S) 2 Z 119.006 Eccentric fixing, single Z 119.015 Mounting adaptor for synchro flange Z 119.035 Bearing flange for encoders with synchro flange www.baumerivo.com Subject to modification in technic and design. Errors and omissions excepted. bit n-1 Z 130.001 29/10/2008 bit n Voltage supply / signals 10...30 VDC / gray code 13 bit 10...30 VDC / binary code 13 bit 10...30 VDC / gray code 14 bit 10...30 VDC / binary code 14 bit Accessories tp tv E-connection Connector M23, 12-pin, axial Connector M23, 12-pin, radial Cable 1 m, axial Cable 1 m, radial Flange / Shaft 1 Synchro flange / ø6 mm IP 54 B Synchro flange / ø6 mm IP 65 Data transfer data 05 Absolute encoders - SSI Shaft with clamping or synchro flange Optical singleturn encoder 14 bit GA240, GA241 - SSI Terminal significance Terminal assignment UB Encoder voltage supply. Connector Core colour Assignment GND Encoder ground connection relating to UB. Pin 1 brown UB Data+ Positive, serial data output of differential linedriver. Pin 2 black GND Data- Negative, serial data output of differential linedriver. Pin 3 blue Clock+ Pin 4 beige Data+ 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. Pin 5 green Zero setting Pin 6 yellow Data- Pin 7 violet Clock- Pin 8 brown/yellow DATAVALID Pin 9 pink UP/DOWN Pin 10 black/yellow – Pin 11 – – Pin 12 – – DATAVALID UP/DOWN Input for setting a zero point anywhere within the programmed encoder resolution. The zero setting operation is triggered by a High impulse and has to be in line with the selected direction of rotation (UP/DOWN). Connect to GND after setting operation for maximum interference immunity. Impulse duration >100 ms. 8 7 10 2 3 6 5 Diagnostic output. An error warning is given at level Low. Important: Interferences must be drained by the downstram electronics. 9 1 12 Please use cores twisted in pairs (for example clock+ / clock-) for extension cables of more than 10 m length. 11 4 Trigger level UP/DOWN counting direction input. This input is standard on High. UP/DOWN means ascending output data with clockwise shaft rotation when looking at flange. UP/DOWN-Low means ascending values with counterclockwise shaft rotation when looking at flange. 3 SSI Circuit SSI-Clock Optocoupler SSI-Data Linedriver RS485 Control inputs Input circuit Input level High >0.7 UB Input level Low <0.3 UB Input resistance 10 kΩ Diagnostic outputs Output circuit NPN-OC 10 kΩ against UB Output level Low <0.5 V (I = 20 mA) Load Low <20 mA www.baumerivo.com Subject to modification in technic and design. Errors and omissions excepted. Zero setting 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. 29/10/2008 Clock- Absolute encoders - SSI Shaft with clamping or synchro flange Optical singleturn encoder 14 bit GA240, GA241 - SSI Dimensions GA240 SSI clamping flange 10 20 46 10 20 15 10 20 46 10 20 15 ø10h6 9 ø58 ø53 ø36f8 9 59 ø10h6 15 17 3 3 3 3 16 13 3 4 www.baumerivo.com Subject to modification in technic and design. Errors and omissions excepted. ø58 ø52 59 58 ø6f8 ø50h7 3 10 9 5.5 4 GA240, GA241 SSI connector dimensions 29/10/2008 GA241 SSI synchro flange 42±0.1 M4x7 (3x120°) ø58 46 ø53 3 3 3 48 ±0.1 M3x7 (3x120°) ø58 3 17 ø36f8 9 11.5 ø58 16 9 ø36f8 ø53 ø10h6 ø10h6 15 ø53 46 ø36f8 48 ±0.1 M3x7 (3x120°)