Special Encoders & Sensors
Absolute encoder KIT - SSI
Magnetic multiturn encoder 12 bit ST / 12 bit MT
GCM2K
Features
– Encoder multiturn / SSI
– Magnetic sensing
– Resolution: singleturn 12 bit, multiturn 12 bit
– Kit for integrating applications
– Cast-capable electronics component
– Support with magnet for shaft assembly
– Electronic setting of zero point
– Extreme compact design
GCM2K as KIT
Technical data - electrical ratings
Voltage supply
Consumption w/o load
Initializing time (typ.)
Interface
Steps per turn
Number of turns
Absolute accuracy
Sensing method
Code
Code sequence
Inputs
10...30 VDC
≤60 mA (24 VDC)
200 ms after power on
SSI
4096 / 12 bit
4096 / 12 bit
±1°
Magnetic
Gray or binary
CW/CCW coded by connection
SSI clock
Control signals UP/DOWN and
zero
SSI data linedriver RS485
Self-diagnosis
Code continuity check
Multiturn sensing
Reverse polarity protection Yes
Technical data - mechanical design
Shaft
Operating speed
Operating temperature
Relative humidity
Weight approx.
E-connection
Customer-specific
≤6000 rpm (electric)
-25...+85 °C
-40...+85 °C (optional)
95 % non-condensing
50 g
PCB connector ZHR-12
Output circuit
Diagnostic functions
1
www.baumerivo.com
29/10/2008
Subject to modification in technic and design. Errors and omissions excepted.
Absolute encoder KIT - SSI
Magnetic multiturn encoder 12 bit ST / 12 bit MT
Special Encoders & Sensors
GCM2K
Part number
GCM2K.
0
00
01
Accessories
Edgeboard connector
(page %S)
Z 186.001
Edgeboard connector, 12-pin with litz 300 mm
E-connection
00
PCB connector ZHR-12
10
12
20
22
Voltage supply / signals
10...30 VDC / gray code 22 bit
10...30 VDC / binary code 22 bit
10...30 VDC / gray code 24 bit
10...30 VDC / binary code 24 bit
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.
Design
0
Circuit board with magnet support
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
Trigger level
SSI
SSI-Clock
SSI-Data
Control inputs
Input level High
Input level Low
Input resistance
Diagnostic outputs
Output level High
Output level Low
Load High
Load Low
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)
<0.7 V (I = 20 mA)
<20 mA
<20 mA
Core colour
pink
green/grey
white/yellow
violet
blue
yellow
white/grey
brown
brown/green
black/white
red
green/white
Assignment
UP/DOWN
Zero setting
internally reserved
Clock-
Clock+
Data-
Data+
UB
UB
GND
DATAVALID MT
GND
Clock-
Zero setting
DATAVALID MT Diagnostic output.
Multiturn sensor supply control. Upon
dropping below a defined voltage level the
DV MT output is switched to Low.
UP/DOWN
Subject to modification in technic and design. Errors and omissions excepted.
29/10/2008
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.
2
www.baumerivo.com
Special Encoders & Sensors
Absolute encoder KIT - SSI
Magnetic multiturn encoder 12 bit ST / 12 bit MT
GCM2K
Dimensions
5 (Screw surface)
2.5
Pin 1
3
±0.2
Mounting gap
ø6 G6
JST ZHR-
12
Sensor
(Ba 25
tte
ry)
120 °
47
± 0.1
51.6
ø14 h11
46
14 (Battery)
3.5
5.5 (Components)
1.5 (PCB)
3
www.baumerivo.com
29/10/2008
Subject to modification in technic and design. Errors and omissions excepted.
