Absolute encoders - bus interfaces Shaft with clamping or synchro flange Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 GXM7W - RS485 Features –– Encoder multiturn / RS485 –– Optical sensing –– Resolution: singleturn 13 bit, multiturn 12 bit –– Clamping flange or synchro flange –– Fieldbus protocol –– Max. 4 bus users –– Bus access according to master/slave principle Optional –– Integration of customer-specific RS485 protocols Technical data - mechanical design Voltage supply Housing ø58 mm Shaft ø10 mm (clamping flange) ø6 mm (synchro flange) Flange Clamping or synchro flange Protection DIN EN 60529 IP 54 without shaft seal IP 65 with shaft seal Operating speed ≤10000 rpm (mechanical) ≤6000 rpm (electric) Starting torque ≤0.015 Nm IP 54 ≤0.03 Nm IP 65 10...30 VDC Reverse polarity protection Yes Consumption w/o load ≤50 mA (24 VDC) Initializing time (typ.) 250 ms after power on Interface RS485 Transmission rate 38.4 kBaud User address Coded by connection Steps per turn 8192 / 13 bit Number of turns 4096 / 12 bit Absolute accuracy ±0.025° Rotor moment of inertia 20 gcm² Sensing method Optical Admitted shaft load Code Binary ≤20 N axial ≤40 N radial Code sequence CW/CCW coded by connection Materials Output circuit RS485 Housing: steel Flange: aluminium Interference immunity DIN EN 61000-6-2 Operating temperature Emitted interference DIN EN 61000-6-4 -25...+85 °C -40...+85 °C (optional) Approval UL approval / E63076 Relative humidity 95 % non-condensing Resistance DIN EN 60068-2-6 Vibration 10 g, 16-2000 Hz DIN EN 60068-2-27 Shock 200 g, 6 ms Weight approx. 400 g E-connection Connector or cable 1 www.baumerivo.com 13/11/2008 Technical data - electrical ratings Subject to modification in technic and design. Errors and omissions excepted. GXM7W with clamping flange Absolute encoders - bus interfaces Shaft with clamping or synchro flange Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 GXM7W - RS485 Part number GXM7W. Accessories 10 A0 A1 11 21 0 A 1 B 01 Connectors and cables Z 130.001 Female connector M23, 12-pin, less cable Interface 01 RS485 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 E-connection Connector M23, 12-pin, axial Connector M23, 12-pin, radial Cable 1 m, axial Cable 1 m, radial Mounting accessories Flange / Shaft Clamping flange / ø10 mm IP 54 Clamping flange / ø10 mm IP 65 Synchro flange / ø6 mm IP 54 Synchro flange / ø6 mm IP 65 Z 119.006 Eccentric fixing, single Z 119.013 Adaptor plate for clamping flange for modification into synchro flange Z 119.015 Mounting adaptor for synchro flange Z 119.017 Mounting angle for clamping flange Z 119.035 Bearing flange for encoders with synchro flange Data transmission format Basic settings of RS485 serial interface • 1 start bit • 8 data bits (least significant bit first) • 1 stop bit • Parity none • Baud rate: 38.4 kBaud Structur of data fields Demand from master SOH 80h ADR 80h EOT Reply of encoder Explanation SOH MT_H MT_L ST_H ST_L LRC EOT Subject to modification in technic and design. Errors and omissions excepted. EAD Value = 01h ADR Address of encoder, value 02h - 05h EOT Value = 04h EAD Bit 0 - 3 response of encoder address (bit 4 -7 not defined) MT_H High byte revolution MT_L Low byte revolution ST_H High byte steps ST_L Low byte steps LRC EAD XOR MT_H XOR M_T_L XOR ST_H XOR ST_L 2 www.baumerivo.com 13/11/2008 SOH Absolute encoders - bus interfaces Shaft with clamping or synchro flange Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 GXM7W - RS485 Terminal significance Terminal assignment UB Encoder voltage supply. Connector Core colour Assingment GND Encoder ground connection relating to UB. Pin 1 brown UB T,R IN T,R OUT Serial data lines. To avoid stub lines the data lines are guided outside on a pair of 2 wires. The arriving bus is on T,R+ IN and T,R- IN, the departing bus on T,R+ OUT und T,R-. If the encoder serves as bus termination or is the only user, only the pair of wires T,R+ IN and T,R- IN is utilized. Note: External connection of terminating resistor 150 Ω to final user. Pin 2 black GND Ident 1...2 T,R+ IN beige Ident 1 Pin 5 green T,R- OUT Pin 6 yellow Ident 2 Pin 7 violet T,R- IN Pin 8 brown/yellow UP/DOWN Pin 9 pink T,R+ OUT Pin 10 black/yellow Zero setting Pin 11 – – Pin 12 – – 8 7 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. Ident 1...2 are utilized for setting the en coder addresses (identifiers). Less poten tial the inputs are internally against UB (=“1“) by pull-up resistors what equals address 2. 9 1 10 12 2 Please use cores twisted in pairs (for example T,R+ / T,R-) for extension cables of more than 10 m length. 3 6 5 11 4 Trigger level Interface Circuit Data Linedriver RS485 Control inputs Input circuit Address 2 3 4 5 Input level High >0.7 UB Ident 1 1 0 1 0 Input level Low <0.3 UB Ident 2 1 1 0 0 Input resistance 10 kΩ 3 Subject to modification in technic and design. Errors and omissions excepted. UP/DOWN 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. blue Pin 4 www.baumerivo.com 13/11/2008 Zero setting Pin 3 Absolute encoders - bus interfaces Shaft with clamping or synchro flange Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 GXM7W - RS485 Dimensions GXM7W clamping flange 10 20 57 10 20 15 10 20 57 10 20 15 ø10h6 9 ø58 ø53 ø36f8 9 59 ø10h6 15 21 3 3 3 3 16 16 ø58 ø52 59 58 ø6f8 ø50h7 3 10 9 5.5 4 3 4 www.baumerivo.com Subject to modification in technic and design. Errors and omissions excepted. GXM7W connector dimensions 13/11/2008 GXM7W synchro flange 42±0.1 M4x7 (3x120°) ø58 57 ø53 3 3 3 48±0.1 M3x7 (3x120°) ø58 3 21 ø53 9 11.5 ø58 13 9 ø36f8 ø53 ø10h6 ø10h6 15 ø36f8 57 ø36f8 48±0.1 M3x7 (3x120°)