Absolute encoders - SSI End shaft ø12 mm Magnetic multiturn encoder 12 bit ST / 12 bit MT GCM2S - SSI Features –– Encoder multiturn / SSI –– Magnetic sensing –– Resolution: singleturn 12 bit, multiturn 12 bit –– End shaft ø12 mm –– Encoder for heavy-duty applications –– New innovative sensing technology –– Electronic setting of zero point Technical data - mechanical design Voltage supply Housing ø58 mm Reverse polarity protection Yes 10...30 VDC Shaft ø12 mm end shaft Consumption w/o load ≤50 mA (24 VDC) Protection DIN EN 60529 IP 54 Initializing time (typ.) 200 ms after power on Operating speed Interface SSI ≤6000 rpm (mechanical) ≤6000 rpm (electric) Steps per turn 4096 / 12 bit Starting torque ≤0.015 Nm Number of turns 4096 / 12 bit Rotor moment of inertia 20 gcm² Absolute accuracy ±1° Materials Sensing method Magnetic Housing: steel Flange: steel Code Gray or binary Operating temperature Code sequence CW/CCW coded by connection -25...+85 °C -40...+85 °C (optional) Inputs SSI clock Control signals UP/DOWN and zero Relative humidity 95 % non-condensing Resistance Output circuit SSI data linedriver RS485 Diagnostic outputs push-pull DIN EN 60068-2-6 Vibration 10 g, 16-2000 Hz DIN EN 60068-2-27 Shock 200 g, 6 ms Interference immunity DIN EN 61000-6-2 Weight approx. 600 g Emitted interference DIN EN 61000-6-4 E-connection Connector, 12-pin Diagnostic functions Self-diagnosis Code continuity check Multiturn sensing Approval UL approval / E63076 1 www.baumerivo.com 29/10/2008 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. GCM2S with end shaft Absolute encoders - SSI End shaft ø12 mm Magnetic multiturn encoder 12 bit ST / 12 bit MT GCM2S - SSI Part number Accessories A1 Connectors and cables (page %S) 01 E-connection A1 Connector M23, 12-pin, radial Voltage supply / signals 10 10...30 VDC / gray code 22 bit 12 10...30 VDC / binary code 22 bit 20 10...30 VDC / gray code 24 bit Data transfer tp tm clock tv bit n bit n-1 bit 3 bit 2 bit 1 Clock frequency f 62.5...1000 kHz Scan ratio of T 40...60 % Time lag tv 150 ns Monoflop time tm 20 µs + T/2 Clock interval tp 25 µs 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 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 Subject to modification in technic and design. Errors and omissions excepted. data Female connector M23, 12-pin, less cable Mounting accessories (page %S) End shaft 0 End shaft ø12 mm clamping ring for spring coupling 1 End shaft ø12 mm clamping ring with pin T=1/f Z 130.001 2 www.baumerivo.com 29/10/2008 GCM2S. Absolute encoders - SSI End shaft ø12 mm Magnetic multiturn encoder 12 bit ST / 12 bit MT GCM2S - 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 DATAVALID MT Pin 11 – – Pin 12 – – DATAVALID 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 5 2 11 4 Trigger level DATAVALID MT Diagnostic output. Multiturn sensor supply control. Upon dropping below a defined voltage level the DV MT output is switched to Low. UP/DOWN 10 3 6 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. 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. 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 Push-pull circuit-proof Output level High >UB -3.5 V (I = -20 mA) Output level Low <0.7 V (I = 20 mA) Load High <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 End shaft ø12 mm Magnetic multiturn encoder 12 bit ST / 12 bit MT GCM2S - SSI Dimensions M x6 58 20 15 (9.5) 49.5 (6 x) ø14 H7 x 35 (ø12 H7 x 35) 7.5 47 42 59 ø4 fg6 3 15° 6 1 3.5 16 24 4 www.baumerivo.com 29/10/2008 Subject to modification in technic and design. Errors and omissions excepted. 59 Connector dimensions