Absolute encoders - SSI
Shaft with clamping or synchro flange
Optical multiturn encoders 14 bit ST / 12 bit MT
GM400, GM401 - SSI
Features
– Encoder multiturn / SSI
– Optical sensing
– Resolution: singleturn 14 bit, multiturn 12 bit
– Clamping flange or synchro flange
– Electronic setting of zero point
– Counting direction input
– Suitable for high positive and negative accelerations
– Available with additional incremental output
Optional
GM400 with clamping flange
Technical data - electrical ratings
Voltage supply
Consumption w/o load
Initializing time (typ.)
Interfaces
Steps per turn
Number of turns
Incremental output
Absolute accuracy
Sensing method
Code
Code sequence
Inputs
10...30 VDC
≤50 mA (24 VDC)
20 ms after power on
SSI, Incremental A 90° B
(optional)
16384 / 14 bit
4096 / 12 bit
2048 pulses A90°B
+ inverted
±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
Multiturn sensing
UL approval / E63076
Reverse polarity protection Yes
– Stainless steel design
Technical data - mechanical design
Housing
Protection DIN EN 60529
Operating speed
Starting torque
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)
≤0.015 Nm IP 54
≤0.03 Nm IP 65
20 gcm²
≤20 N axial
≤40 N radial
Housing: steel
Flange: aluminium
-25...+85 °C
-40...+85 °C (optional)
DIN EN 60068-2-6
Vibration 10 g, 16-2000 Hz
DIN EN 60068-2-27
Shock 200 g, 6 ms
400 g
Connector or cable
ø10 mm
Clamping flange
ø6 mm
Synchro flange
Subject to modification in technic and design. Errors and omissions excepted.
29/10/2008
95 % non-condensing
Output circuit
Interference immunity
Emitted interference
Diagnostic functions
Weight approx.
E-connection
GM400
Shaft
Flange
GM401
Shaft
Flange
Approval
1
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Shaft with clamping or synchro flange
Optical multiturn encoders 14 bit ST / 12 bit MT
Absolute encoders - SSI
GM400, GM401 - SSI
Part number
Clamping flange
GM400.
Pulses / Incremental output
No incremental output
2048 pulses / push-pull
2048 pulses / RS422
2048 pulses / sine 1 Vpp
A0
A1
A2
A3
11
21
10
12
20
30
40
90
92
Synchro flange
GM401.
Pulses / Incremental output
No incremental output
2048 pulses / push-pull
2048 pulses / RS422
2048 pulses / sine 1 Vpp
02
04
06
07
A0
A1
A2
A3
11
21
10
12
20
30
40
90
92
02
04
06
07
E-connection
Connector M23, 12-pin, axial
Connector M23, 12-pin, radial
Connector M23, 12-pin, axial,
for incremental output 04/06/07
Connector M23, 12-pin, radial,
for incremental output 04/06/07
Cable 1 m, axial
Cable 1 m, radial
E-connection
Connector M23, 12-pin, axial
Connector M23, 12-pin, radial
Connector M23, 12-pin, axial,
for incremental output 04/06/07
Connector M23, 12-pin, radial,
for incremental output 04/06/07
Cable 1 m, axial
Cable 1 m, radial
Voltage supply / signals
10...30 VDC / gray code 25 bit
10...30 VDC / binary code 25 bit
10...30 VDC / gray code 24 bit
10...30 VDC / gray code 25 bit + parity
10...30 VDC / gray code 24 bit + DV
10...30 VDC / gray code 26 bit
10...30 VDC / binary code 26 bit
Voltage supply / signals
10...30 VDC / gray code 25 bit
10...30 VDC / binary code 25 bit
10...30 VDC / gray code 24 bit
10...30 VDC / gray code 25 bit + parity
10...30 VDC / gray code 24 bit + DV
10...30 VDC / gray code 26 bit
10...30 VDC / binary code 26 bit
Flange / Shaft
0
Clamping flange / ø10 mm IP 54
A Clamping flange / ø10 mm IP 65
Flange / Shaft
1
Synchro flange / ø6 mm IP 54
B Synchro flange / ø6 mm IP 65
Subject to modification in technic and design. Errors and omissions excepted.
2
www.baumerivo.com
29/10/2008
Absolute encoders - SSI
Shaft with clamping or synchro flange
Optical multiturn encoders 14 bit ST / 12 bit MT
GM400, GM401 - SSI
Accessories
Connectors and cables
(page %S)
Z 130.001
Z 130.003
Z 182.001
Z 182.003
Z 119.006
Z 119.013
Z 119.017
Z 119.006
Z 119.015
Z 119.035
Female connector M23, 12-pin, less cable
Female connector M23, 12-pin, 2 m cable
Female connector M23, 12-pin, less cable
(incr.)
Female connector M23, 12-pin, 2 m (incr.)
Eccentric fixing, single
Adaptor plate for clamping flange for
modification into synchro flange
Mounting angle for clamping flange
Eccentric fixing, single
Mounting adaptor for synchro flange
Bearing flange for encoders with synchro
flange
Trigger level
SSI
SSI-Clock
SSI-Data
Control inputs
Input level High
Input level Low
Input resistance
Diagnostic outputs or
Incremental outputs
Output level High
Output level Low
Load High
Load Low
Incremental outputs
Output level High
Output level Low
tp
T=1/f
clock
data
tv
bit n
bit n-1
bit 3
bit 2
bit 1
Circuit
Optocoupler
Linedriver RS485
Input circuit
>0.7 UB
<0.3 UB
10 kΩ
Output circuit
Push-pull circuit-proof
>UB -3.5 V (I = -20 mA)
<0.5 V (I = 20 mA)
<20 mA
<20 mA
Linedriver RS422
>2.5 V (I = -20 mA)
<0.5 V (I = 20 mA)
<20 mA
<20 mA
Sine / Cosine
1 Vpp ±10 %
<10 mA
Mounting accessories for GM400
(page %S)
Mounting accessories for GM401
(page %S)
Data transfer
Load High
Load Low
Outputs
Input level
Load
tm
Clock frequency f
Scan ratio of T
Time lag tv
Monoflop time tm
Clock interval tp
62.5...1500 kHz
40...60 %
25 µs + T/2
30 µs
Subject to modification in technic and design. Errors and omissions excepted.
150 ns
3
www.baumerivo.com
29/10/2008
Shaft with clamping or synchro flange
Optical multiturn encoders 14 bit ST / 12 bit MT
Absolute encoders - SSI
GM400, GM401 - 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 SS 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.
Terminal assignment
GM400, GM401
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
DATAVALID MT
–
–
Clock-
brown/yellow DATAVALID
Zero setting
GM400, GM401 with inremental tracks
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
white
blue
green
grey
yellow
red
red/blue
pink
violet
black
grey/pink
Assignment
UB
GND
Clock+
Data+
Zero setting
Data-
Clock-
Track B inv.
UP/DOWN
Track a inv.
Track B
Subject to modification in technic and design. Errors and omissions excepted.
29/10/2008
DATAVALID
DATAVALID MT Diagnostic output for monitoring the
multiturn sensor voltage supply. Upon
dropping below a defined voltage level the
DV MT output is switched to Low.
UP/DOWN
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.
Incremental tracks A 90° B and inverted.
Track A
Incremental
Outputs
8
7
6
5
12
9 1
10
11
2
3
4
Please use cores twisted in pairs (for
example clock+ / clock-) for extensi-
on cables of more than 10 m length.
4
www.baumerivo.com
Absolute encoders - SSI
Shaft with clamping or synchro flange
Optical multiturn encoders 14 bit ST / 12 bit MT
GM400, GM401 - SSI
Dimensions
GM400 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
GM401 synchro flange
42
±0.1
M4x7 (3x120°)
4
3
10
9
ø6f8
ø50h7
GM400, GM401 connector dimensions
Subject to modification in technic and design. Errors and omissions excepted.
29/10/2008
58
59
ø52
3
5.5
ø58
5
www.baumerivo.com
ø58
59
9
9
ø58
9
9
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