Incremental encoders With measuring arm and wheel 100...25000 manual adjustable MA20 Features –– Encoder with 16 predefined resolutions –– Max. 25000 pulses per revolution –– Measuring wheel circumference 200 mm –– Manual adjustment without any programming tool –– Contact pressure seamlessly adjustable –– Different degrees of rubber hardness for optimal grip Technical data - mechanical design Voltage supply 4.75...30 VDC Size (flange) ø40 mm Consumption typ. 100 mA (24 VDC, w/o load) Shaft type ø6 mm solid shaft Pulses per revolution 100...25000 Protection DIN EN 60529 IP 64 Sensing method Optical Operating speed ≤3000 rpm Output frequency ≤300 kHz Operating torque typ. 0.0075 Nm (3000 rpm / 20 °C) Output signals A 90° B Materials Output stages Push-pull antivalent, short-circuit proof (HTL) Interference immunity DIN EN 61000-6-2 Encoder housing: aluminium Measuring arm: Aluminium/steel Measuring wheel: Aluminium/ NBR Emitted interference DIN EN 61000-6-3 Operating temperature -20...+85 °C Relative humidity 95 % non-condensing Resistance DIN EN 60068-2-6 Vibration 10 g, 10-200 Hz DIN EN 60068-2-27 Shock 50 g, 11 ms Connection Connector M12, 8-pin Cable 2 m Weight approx. 100 g Output signals Counter clockwise rotating direction when looking at the flange. Switch setting (HEX switch) CHA Switch 0 1 2 3 4 5 6 7 CHA comp. CHB CHB comp. 90° 1 Resolution 100 200 360 500 512 720 1000 1024 Switch 8 9 A B C D E F Resolution 2000 2048 (default) 2500 3600 5000 10000 20000 25000 www.baumer.com/motion 13/8/2015 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. MA20 with mounting accessories Incremental encoders With measuring arm and wheel 100...25000 manual adjustable MA20 Part number MA20 Terminal assignment I401D 26W Connector 02048C Connection 5 Cable 2 m, radial N Connector M12, 8-pin, radial Voltage supply / signals 26W 4.75...30 VDC / push-pull antivalent short-circuit proof Core colour Signals Pin 1 white 0V Pin 2 brown +Vs Pin 3 green CHA Pin 4 yellow CHB Pin 5 grey n.c. Pin 6 pink n.c. Pin 7 blue CHB comp. Pin 8 red CHA comp. Connector M12 – for connection reference -N Measuring wheel N4 NBR, Shore 40 N7 NBR, Shore 70 5 6 7 4 3 8 1 2 Trigger level 10146775 Outputs 26W Push-pull antivalent short-circuit-proof Output level High >+Vs -2.6 V (I = 20 mA) Output level Low <0.5 V (I = -20 mA) Female connector M12, 8-pin, straight, without cable Mounting accessories 11043871 Encoder standoff set 11047704 O-ring for wheel (shore 40), yellow 11043772 O-ring for wheel (shore 70), black 11053254 Adjust gauge Dimensions MA20 6: ¡ 0 [ ¡ DSSUR[ DSSU 1 Mounting accessories: encoder standoff set DSSUR[ 2 www.baumer.com/motion 13/8/2015 Connectors and cables Subject to modification in technic and design. Errors and omissions excepted. Accessories