Absolute encoders - SSI Blind hollow shaft ø12 mm Magnetic single- or multiturn encoders 12 bit ST / 13 bit MT BMSH 42, BMMH 42 SSI - MAGRES Features –– Mini encoder single- or multiturn / SSI –– Magnetic sensing –– Resolution: singleturn 12 bit, multiturn 13 bit –– Housing ø42 mm –– High resistance to shock and vibrations –– Reset input –– Blind hollow shaft ø12 mm Technical data - mechanical design Voltage supply 5 VDC ±10 % 10...30 VDC Size (flange) ø42 mm 100 mA (5 VDC, w/o load) 50 mA (24 VDC, w/o load) Shaft type ø12 mm (blind hollow shaft) Protection DIN EN 60529 IP 65 Operating speed ≤12000 rpm (mechanical) ≤6000 rpm (electric) Operating torque typ. 0.0093 Nm Materials Housing: steel Flange: aluminium Consumption typ. Initializing time typ. 170 ms after power on Interface SSI Steps per turn 4096 / 12 bit Absolute accuracy ±1 ° Sensing method Magnetic Operating temperature -20...+85 °C Code Gray or binary Relative humidity 95 % Code sequence CW: ascending values with clockwise sense of rotation; looking at flange Resistance Inputs SSI clock Zero setting input DIN EN 60068-2-6 Vibration 30 g, 10-2000 Hz DIN EN 60068-2-27 Shock 100 g, 6 ms Connection Output stages SSI data: linedriver RS485 Connector M12, 8-pin Cable Interference immunity DIN EN 61000-6-2 BMSH 42 Emitted interference DIN EN 61000-6-3 Weight approx. Approval UL approval / E217823 BMMH 42 Weight approx. BMSH 42 Function 120 g 190 g Singleturn BMMH 42 Function Multiturn Number of turns 8192 / 13 bit 1 www.baumer.com/motion 13/8/2015 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. BMMH 42 SSI with blind hollow shaft Absolute encoders - SSI Blind hollow shaft ø12 mm Magnetic single- or multiturn encoders 12 bit ST / 13 bit MT BMSH 42, BMMH 42 SSI - MAGRES Part number Singleturn Multiturn BMSH 42S1 12/00 BMMH 42S1 12/13 Connection 5 Cable radial N Connector M12, 8-pin, radial Connection 5 Cable radial N Connector M12, 8-pin, radial Blind hollow shaft B2 ø12 mm, IP 42, with clamping ring P2 ø12 mm, IP 65, with clamping ring Blind hollow shaft B2 ø12 mm, IP 42, with clamping ring P2 ø12 mm, IP 65, with clamping ring Resolution 12/00 12 bit singleturn Resolution 12/13 12/13 bit single-/multiturn Voltage supply / signals 05C 5 VDC / SSI 24C 10...30 VDC / SSI Voltage supply / signals 05C 5 VDC / SSI 24C 10...30 VDC / SSI Code G Gray code N Binary code Code G Gray code N Binary code Accessories Data transfer Connectors and cables 10146775 clock data tv bit n bit n-1 bit 3 bit 2 Mounting accessories bit 1 Clock frequency f 100...1000 kHz Duty cycle of T 40...60 % Delay time tv 200 ns Monoflop time tm 20 µs + T/2 Female connector M12, 8-pin, straight, without cable 10110616 Clamp set ø15 mm 10138610 Set of spring washers for BMSH, BMMH 42 Trigger level Control inputs Input circuit Input level Low <0,4 V (>2 ms) Input level High +Vs or open 2 www.baumer.com/motion Subject to modification in technic and design. Errors and omissions excepted. tm 13/8/2015 T=1/f Absolute encoders - SSI Blind hollow shaft ø12 mm Magnetic single- or multiturn encoders 12 bit ST / 13 bit MT BMSH 42, BMMH 42 SSI - MAGRES Terminal significance Terminal assignment +Vs 0V Encoder ground connection relating to +Vs. Cable for connection reference -5 Data+ Positive, serial data output of differential linedriver. Core colour Signals Description brown +Vs Supply voltage Data- Negative, serial data output of differential linedriver. white 0V Supply voltage 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. grey Data+ Data signal pink Data- Data signal green Clock+ Clock signal yellow Clock- Clock signal blue Zero Zero setting input red d.u. do not use Rot. direction Input for setting a zero point anywhere within the encoder resolution. The zero setting operation is triggered by a Low impulse. Connect to +Vs after setting operation for maximum interference immunity. Impulse duration >2 ms. Screen connected to housing Cable data 8 x 0.14 mm2 Connector M12 male for connection reference -N Ascending position values when looking at the flange and rotating the shaft clockwise. Connector Signals Description Pin 1 0V Supply voltage Pin 2 +Vs Supply voltage Pin 3 Clock+ Clock signal Pin 4 Clock- Clock signal Pin 5 Data+ Data signal Pin 6 Data- Data signal Pin 7 Zero Zero setting input Pin 8 d.u. do not use 3 Subject to modification in technic and design. Errors and omissions excepted. Zero 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. www.baumer.com/motion 13/8/2015 Clock- Encoder supply voltage. Absolute encoders - SSI Blind hollow shaft ø12 mm Magnetic single- or multiturn encoders 12 bit ST / 13 bit MT BMSH 42, BMMH 42 SSI - MAGRES Dimensions BMSH 42 SSI cable radial 2 2,2 BMSH 42 SSI connector radial M3 x 6 3 x 120° 2,2 1 12 H7 x15 17 15 ø 24 10 6 33 38 33 38 0 -0,025 42 40 BMMH 42 SSI cable radial 2,2 10,5 6 0 -0,025 42 40 2 M3 x 6 3 x 120° ø 24 1 2 12 H7 x15 BMMH 42 SSI connector radial M3 x 6 3 x 120° 12 H7 x15 M3 x 6 3 x 120° 6 2,2 1 0 -0.025 47 42 10,5 33 38 0 -0,025 42 Subject to modification in technic and design. Errors and omissions excepted. 38 47 2 33 4 www.baumer.com/motion 13/8/2015 10,5 6 ø 12 H7 x 15 15 ø 24 ø 24 1