Absolute encoders - SSI
Shaft with clamping or synchro flange
Optical singleturn encoder 14 bit
GA240, GA241 - SSI
Features
– Encoder singleturn / SSI
– Optical sensing
– Resolution: 14 bit
–
Clamping flange or synchro flange
–
Permanent check of code continuity
–
Extreme resistance to shock and vibration
–
Encoder with electronic reset
GA240 with clamping flange
Technical data - electrical ratings
Voltage supply
Consumption w/o load
Initializing time (typ.)
Interface
Steps per turn
Absolute accuracy
Sensing method
Code
Code sequence
Inputs
10...30 VDC
≤50 mA (24 VDC)
20 ms after power on
SSI
16384 / 14 bit
±0.025°
Optical
Gray or binary
CW/CCW coded by connection
SSI clock
Control signals UP/DOWN and
zero
SSI data linedriver RS485
Diagnostic outputs push-pull
DIN EN 61000-6-2
DIN EN 61000-6-4
Self-diagnosis
Code continuity check
UL approval / E63076
Reverse polarity protection Yes
Technical data - mechanical design
Housing
Protection DIN EN 60529
Operating speed
Rotor moment of inertia
Admitted shaft load
Materials
Operating temperature
Relative humidity
Resistance
ø58 mm
IP 54 without shaft seal
IP 65 with shaft seal
≤10000 rpm (mechanical)
≤6000 rpm (electric)
14.5 gcm²
≤20 N axial
≤40 N radial
Housing: aluminium
Flange: aluminium
-25...+85 °C
-40...+85 °C (optional)
95 % non-condensing
DIN EN 60068-2-6
Vibration 10 g, 16-2000 Hz
DIN EN 60068-2-27
Shock 200 g, 6 ms
250 g
Connector or cable
ø10 mm
Clamping flange
≤0.015 Nm IP 54
≤0.03 Nm IP 65
ø6 mm
Synchro flange
≤0.01 Nm IP 54
≤0.015 Nm IP 65
Interference immunity
Emitted interference
Diagnostic functions
Approval
Weight approx.
E-connection
GA240 - SSI
Shaft
Flange
Starting torque
GA241 - SSI
Shaft
Flange
Starting torque
1
www.baumerivo.com
29/10/2008
Subject to modification in technic and design. Errors and omissions excepted.
Output circuit
Shaft with clamping or synchro flange
Optical singleturn encoder 14 bit
Absolute encoders - SSI
GA240, GA241 - SSI
Part number
Clamping flange
GA240.
05
E-connection
Connector M23, 12-pin, axial
Connector M23, 12-pin, radial
Cable 1 m, axial
Cable 1 m, radial
30
32
90
92
Synchro flange
GA241.
05
E-connection
Connector M23, 12-pin, axial
Connector M23, 12-pin, radial
Cable 1 m, axial
Cable 1 m, radial
A0
A1
11
21
30
32
90
92
A0
A1
11
21
Voltage supply / signals
10...30 VDC / gray code 13 bit
10...30 VDC / binary code 13 bit
10...30 VDC / gray code 14 bit
10...30 VDC / binary code 14 bit
Voltage supply / signals
10...30 VDC / gray code 13 bit
10...30 VDC / binary code 13 bit
10...30 VDC / gray code 14 bit
10...30 VDC / binary code 14 bit
Flange / Shaft
0
Clamping flange / ø10 mm IP 54
A
Clamping flange / ø10 mm IP 65
Data transfer
tp
T=1/f
clock
data
tv
bit n
bit n-1
bit 3
bit 2
bit 1
Flange / Shaft
1
Synchro flange / ø6 mm IP 54
B
Synchro flange / ø6 mm IP 65
Accessories
Connectors and cables
(page %S)
Z 130.001
Z 130.003
Z 130.005
Z 130.007
Z 119.006
Z 119.013
Z 119.017
Z 119.025
Female connector M23, 12-pin, less cable
Female connector M23, 12-pin, 2 m cable
Female connector M23, 12-pin, 5 m cable
Female connector M23, 12-pin, 10 m cable
Eccentric fixing, single
Adaptor plate for clamping flange for
modification into synchro flange
Mounting angle for clamping flange
Adaptor plate for clamping flange, mounting
by eccentric fixings (order separately)
Eccentric fixing, single
Mounting adaptor for synchro flange
Bearing flange for encoders with synchro
flange
tm
Mounting accessories for GA240 - SSI
(page %S)
62.5...1500 kHz
40...60 %
150 ns
25 µs + T/2
30 µs
Clock frequency f
Scan ratio of T
Time lag tv
Monoflop time tm
Clock interval tp
Mounting accessories for GA241 - SSI
(page %S)
Z 119.006
Z 119.015
Z 119.035
2
www.baumerivo.com
29/10/2008
Subject to modification in technic and design. Errors and omissions excepted.
Absolute encoders - SSI
Shaft with clamping or synchro flange
Optical singleturn encoder 14 bit
GA240, GA241 - SSI
Terminal significance
UB
GND
Data+
Data-
Clock+
Encoder voltage supply.
Encoder ground connection relating to UB.
Positive, serial data output of differential
linedriver.
Negative, serial data output of differential
linedriver.
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.
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.
Diagnostic output.
An error warning is given at level Low.
Important: Interferences must be drained
by the downstram electronics.
UP/DOWN counting direction input.
This input is standard on High. UP/DOWN
means ascending output data with clock-
wise shaft rotation when looking at flange.
UP/DOWN-Low means ascending values
with counterclockwise shaft rotation when
looking at flange.
Terminal assignment
Connector
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Core colour
brown
black
blue
beige
green
yellow
violet
pink
black/yellow
–
–
Assignment
UB
GND
Clock+
Data+
Zero setting
Data-
Clock-
UP/DOWN
–
–
–
Please use cores twisted in pairs (for
example clock+ / clock-) for extensi-
on cables of more than 10 m length.
brown/yellow DATAVALID
Clock-
Zero setting
8
7
6
5
12
9 1
10
11
2
3
4
DATAVALID
Trigger level
SSI
SSI-Clock
SSI-Data
Control inputs
Input level High
Input level Low
Input resistance
Diagnostic outputs
Output level Low
Load Low
Circuit
Optocoupler
Linedriver RS485
Input circuit
>0.7 UB
<0.3 UB
10 kΩ
Output circuit
NPN-OC 10 kΩ against UB
<0.5 V (I = 20 mA)
<20 mA
Subject to modification in technic and design. Errors and omissions excepted.
29/10/2008
UP/DOWN
3
www.baumerivo.com
Shaft with clamping or synchro flange
Optical singleturn encoder 14 bit
Absolute encoders - SSI
GA240, GA241 - SSI
Dimensions
GA240 SSI clamping flange
48
±0.1
M3x7 (3x120°)
46
10 20
15
ø10h6
46
10 20
15
ø10h6
ø36f8
ø53
ø36f8
ø10h6
ø36f8
ø53
ø53
ø58
11.5
16
17
3
3
3
3
48
±0.1
M3x7 (3x120°)
46
10 20
15
ø10h6
46
10 20
15
ø36f8
ø53
ø58
3
3
13
16
17
3
3
GA241 SSI synchro flange
42
±0.1
M4x7 (3x120°)
4
3
10
9
ø6f8
ø50h7
GA240, GA241 SSI connector dimensions
Subject to modification in technic and design. Errors and omissions excepted.
29/10/2008
58
59
ø52
3
5.5
ø58
4
www.baumerivo.com
ø58
59
9
9
ø58
9
9
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