Absolute encoders - SSI Blind hollow shaft up to ø15 mm Optical multiturn encoders 14 bit ST / 12 bit MT GXM2S Features –– Encoder multiturn / SSI –– Optical sensing method –– Resolution: singleturn 14 bit, multiturn 12 bit –– Blind hollow shaft ø12...ø15 mm –– Electronic setting of zero point –– Counting direction input –– Suitable for high positive, negative accelerations –– Available with additional incremental output –– Maximum resistant against magnetic fields Technical data - mechanical design Voltage supply Size (flange) ø58 mm Shaft type ø12 mm (blind hollow shaft) ø14 mm (blind hollow shaft) ø15 mm (blind hollow shaft) Protection DIN EN 60529 IP 54, IP 65 (optional) Operating speed ≤6000 rpm (mechanical) ≤6000 rpm (electric) Starting acceleration ≤1000 U/s² Starting torque ≤0.015 Nm (+25 °C, IP 54) Rotor moment of inertia 20 gcm² Materials Housing: steel Flange: aluminium Operating temperature -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 100 g, 6 ms Weight approx. 400 g Connection Connector M23, 12-pin 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) Function Multiturn Steps per turn ≤16384 / 14 bit Number of turns 4096 / 12 bit Incremental output 2048 pulses A90°B + inverted Absolute accuracy ±0.025 ° Sensing method Optical Code Gray or binary Code sequence CW/CCW coded by connection Inputs SSI clock Control signals UP/DOWN and zero Output stages SSI data: linedriver RS485 Diagnostic and incremental outputs Interference immunity DIN EN 61000-6-2 Emitted interference DIN EN 61000-6-4 Diagnostic functions Self-diagnosis Multiturn sensing Approval UL approval / E63076 1 www.baumer.com/motion 14/6/2016 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. GXM2S with blind hollow shaft Absolute encoders - SSI Blind hollow shaft up to ø15 mm Optical multiturn encoders 14 bit ST / 12 bit MT GXM2S Part number Accessories Multiturn Connectors and cables GXM2S. 12 13 20 24 90 92 0 1 B 4 5 F U W 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, without cable (incr.) Z 182.003 Female connector M23, 12-pin, 2 m (incr.) Z 182.005 Female connector M23, 12-pin, 5 m (incr.) Voltage supply / signals 10...30 VDC / gray code 25 bit (ST 13 + MT 12) 5 VDC / gray code 25 bit (ST 13 + MT 12) 10...30 VDC / binary code 25 bit (ST 13 + MT 12) 5 VDC / binary code 25 bit (ST 13 + MT 12) 10...30 VDC / gray code 24 bit (ST 12 + MT 12) 10...30 VDC / binary code 24 bit 10...30 VDC / gray code 26 bit (ST 14 + MT 12) 10...30 VDC / binary code 26 bit (ST 14 + MT 12) 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 for encoders with 15 mm pin Z 119.050 Spring coupling for one-side attachment, length 35 mm Z 119.053 Spring coupling for motor’s fan guard 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 one-side attachment, length 115 mm Z 119.082 Spring coupling for encoders with ø58 mm housing, hole distance 63 mm Data transfer tp Blind hollow shaft ø12 mm, without pin ø12 mm, pin 15 mm ø12 mm, pin 9.5 mm ø14 mm, without pin ø14 mm, pin 15 mm ø14 mm, pin 9.5 mm ø15 mm, pin 15 mm / IP 54 ø15 mm, without pin / IP 65 T=1/f tm clock data 2 tv bit n bit n-1 bit 3 bit 2 bit 1 Clock frequency f 62.5...1500 kHz Duty cycle of T 40...60 % Delay time tv 150 ns Monoflop time tm 26 µs + T/2 Clock interval tp 30 µs www.baumer.com/motion Subject to modification in technic and design. Errors and omissions excepted. 11 Z 130.003 Mounting accessories Connection A0 Connector M23, 12-pin, axial A1 Connector M23, 12-pin, radial A3 Connector M23, 12-pin, radial, for incremental output 04/06/07 10 Female connector M23, 12-pin, without cable 14/6/2016 02 04 06 07 27 Pulses / Incremental output No incremental output 2048 pulses / push-pull 2048 pulses / RS422 2048 periods / SinCos 1024 periods / SinCos Z 130.001 Absolute encoders - SSI Blind hollow shaft up to ø15 mm Optical multiturn encoders 14 bit ST / 12 bit MT GXM2S Terminal significance Terminal assignment UB Encoder voltage supply. GXM2S 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 black/yellow DATAVALID MT Pin 11-12 – – Zero setting DATAVALID 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. GXM2S with incremental tracks | SinCos Diagnostic output. An error warning is given at level Low. Important: Interferences must be drained by the downstram electronics. DATAVALID MT Diagnostic output for monitoring the multiturn sensor voltage supply. Upon dropping below a defined voltage level the DV MT output is switched to Low. UP/DOWN Incremental Outputs 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. Connector Core colour Assignment Incremental SinCos Pin 1 brown UB UB Pin 2 white GND GND Pin 3 blue Clock+ Clock+ Pin 4 green Data+ Data+ Pin 5 grey Zero setting Zero setting Pin 6 yellow Data- Data- Pin 7 red Clock- Clock- Pin 8 red/blue Track B inv. Cosine Pin 9 pink UP/DOWN UP/DOWN Pin 10 violet Track A inv. Sine Pin 11 black Track A Sine Pin 12 grey/pink Track B Cosine 8 Incremental tracks A 90° B and inverted. 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.baumer.com/motion Subject to modification in technic and design. Errors and omissions excepted. 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. 14/6/2016 Clock+ Absolute encoders - SSI Blind hollow shaft up to ø15 mm Optical multiturn encoders 14 bit ST / 12 bit MT GXM2S 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 / Low <20 mA Control inputs Input circuit Input level High >0.7 UB Outputs SinCos Input level Low <0.3 UB Output level 1 Vpp ±10 % Input resistance 10 kΩ 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 / Low <20 mA Dimensions GXM2S 15 (9.5) 58 20 49.5 7.5 49.5 7.5 11.5 47 42 3 (6 x) 16 6 1 3.5 15° x6 Subject to modification in technic and design. Errors and omissions excepted. M 30 59 Connector dimensions 4 www.baumer.com/motion 14/6/2016 59 ø4 fg6 ø12-15 H7 x 35