Absolute encoders - SSI End shaft max. ø14 mm Optical singleturn encoder 14 bit GXA2S - SSI Features –– Encoder singleturn / SSI –– Optical sensing –– Resolution: 14 bit –– End shaft ø12 mm / ø14 mm –– Electronic setting of zero point –– Permanent check of code continuity –– Counting direction input –– For high positive and negative acceleration –– Available with additional incremental output Technical data - mechanical design Voltage supply Housing ø58 mm Shaft ø12 mm end shaft ø14 mm end shaft Protection DIN EN 60529 IP 54 Operating speed ≤6000 rpm (mechanical) ≤6000 rpm (electric) 10...30 VDC Reverse polarity protection Yes Consumption w/o load ≤50 mA (24 VDC) Initializing time (typ.) 20 ms after power on Interfaces SSI, Incremental A 90° B (optional) Steps per turn 16384 / 14 bit Starting torque ≤0.015 Nm IP 54 Incremental output 2048 pulses A90°B + inverted Rotor moment of inertia 20 gcm² Materials Absolute accuracy ±0.025° Housing: steel Flange: aluminium Sensing method Optical Operating temperature Code Gray or binary -25...+85 °C -40...+85 °C (optional) Code sequence CW/CCW coded by connection Relative humidity 95 % non-condensing Inputs SSI clock Control signals UP/DOWN and zero Resistance Output circuit SSI data linedriver RS485 Diagnostic and incremental outputs DIN EN 60068-2-6 Vibration 10 g, 16-2000 Hz DIN EN 60068-2-27 Shock 100 g, 6 ms Weight approx. 250 g E-connection Connector, 12-pin Interference immunity DIN EN 61000-6-2 Emitted interference DIN EN 61000-6-4 Diagnostic functions Self-diagnosis Code continuity check Approval UL approval / E63076 1 www.baumerivo.com 30/10/2008 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. GXA2S with end shaft Absolute encoders - SSI End shaft max. ø14 mm Optical singleturn encoder 14 bit GXA2S - SSI Part number Accessories Singleturn Connectors and cables (page %S) GXA2S. 02 04 06 07 Pulses / Incremental output No incremental output 2048 pulses / push-pull 2048 pulses / RS422 2048 pulses / sine 1 Vpp E-connection A1 Connector M23, 12-pin, radial A3 Connector M23, 12-pin, radial, for incremental output 04/06/07 30 32 90 92 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 Z 182.001 Female connector M23, 12-pin, less cable (incr.) Z 182.003 Female connector M23, 12-pin, 2 m (incr.) Z 182.005 Female connector M23, 12-pin, 5 m (incr.) Mounting accessories (page %S) 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 End shaft End shaft ø12 mm without pin End shaft ø12 mm with pin 15 mm End shaft ø12 mm with pin 9.5 mm End shaft ø14 mm without pin End shaft ø14 mm with pin 15 mm End shaft ø14 mm with pin 9.5 mm 0 1 B 4 5 F Z 130.001 Data transfer Z 119.023 Spring coupling for encoders with ø58 mm housing Z 119.024 Torque support and spring washer for encoders with 9.5 mm pin Z 119.041 Torque support by rubber buffer element for encoders with 15 mm pin Z 119.050 Spring coupling Z 119.053 Spring coupling height 19.1 mm Z 119.070 Spring coupling height 29.1 mm Z 119.072 Spring coupling for encoders with ø58 mm housing, hole distance 73 mm Z 119.073 Spring coupling for encoders with ø58 mm housing, hole distance 68 mm Z 119.076 Spring coupling for encoders with ø58 mm housing Z 119.082 Spring coupling for encoders with ø58 mm housing, hole distance 63 mm tp Subject to modification in technic and design. Errors and omissions excepted. tm clock data tv bit n bit n-1 bit 3 bit 2 bit 1 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 2 www.baumerivo.com 30/10/2008 T=1/f Absolute encoders - SSI End shaft max. ø14 mm Optical singleturn encoder 14 bit GXA2S - SSI Terminal significance Terminal assignment UB Encoder voltage supply. GXA2S GND Encoder ground connection relating to UB. Connector Core colour Assignment Data+ Positive, serial data output of differential linedriver. Pin 1 brown UB Data- Negative, serial data output of differential linedriver. Pin 2 black GND Pin 3 blue Clock+ Pin 4 beige Data+ 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 – – Pin 11 – – Pin 12 – – Zero setting DATAVALID UP/DOWN Incremental Outputs 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. 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. GXA2S with incremental tracks Connector Core colour Assignment Pin 1 brown UB Pin 2 white GND Pin 3 blue Clock+ Pin 4 green Data+ Pin 5 grey Zero setting 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. Pin 6 yellow Data- Pin 7 red Clock- Pin 8 red/blue Track B inv. Pin 9 pink UP/DOWN Pin 10 violet Track A inv. Incremental tracks A 90° B and inverted. Pin 11 black Track A Pin 12 grey/pink Track B Diagnostic output. An error warning is given at level Low. Important: Interferences must be drained by the downstram electronics. 8 7 10 12 2 Please use cores twisted in pairs (for example clock+ / clock-) for extension cables of more than 10 m length. 3 6 5 3 9 1 11 4 www.baumerivo.com Subject to modification in technic and design. Errors and omissions excepted. Clock- Positive SS 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. 30/10/2008 Clock+ Absolute encoders - SSI End shaft max. ø14 mm Optical singleturn encoder 14 bit GXA2S - SSI Trigger level SSI Circuit Incremental outputs Linedriver RS422 SSI-Clock Optocoupler Output level High >2.5 V (I = -20 mA) SSI-Data Linedriver RS485 Output level Low <0.5 V (I = 20 mA) Load High <20 mA Load Low <20 mA Control inputs Input circuit Input level High >0.7 UB Input level Low <0.3 UB Outputs Sine / Cosine Input resistance 10 kΩ Input level 1 Vpp ±10 % Load <10 mA Diagnostic outputs or Incremental outputs Output circuit Push-pull circuit-proof Output level High >UB -3.5 V (I = -20 mA) Output level Low <0.5 V (I = 20 mA) Load High <20 mA Load Low <20 mA Dimensions GXA2S Connector dimensions 15 (9.5) 49.5 7.5 3 (6 x) 16 6 1 3.5 15° x6 30 4 www.baumerivo.com 30/10/2008 M Subject to modification in technic and design. Errors and omissions excepted. 47 42 59 ø4 fg6 ø14 H7 x 35 (ø12 H7 x 35) 59 58 20