IVO GXM7W.A10A001 Absolute encoders - bus interface Datasheet

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
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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
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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
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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°)
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