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Siko Wire-actuated encoder SGH25 | Position sensor for hydraulic cylinders with measuring lengths up to 2500 mm
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Absolute wire-actuated sensor for position measurement and speed measurement in hydraulic cylinders, telescopic cylinders, and piston accumulators. Durable, reliable, and easy to integrate, based on over 30 years of experience in wire-actuated sensor technology.

Profile SGH25:

  • Measuring range 0 … 2500 mm (98.42 inches)
  • Absolute measuring system
  • Pressure-resistant up to 350 bar, pressure peaks up to 450 bar
  • High degree of flexibility, adjustable to all measuring lengths thanks to teach-in 
  • Redundant interfaces (CAT3) available
  • Safety version usable up to Performace Level d
  • Analog, CANopen, SAE J1939, CANopen Safety interfaces

Mechanical data

Feature Technical data Additional information
Flange aluminum

sealing ring (HNBR)
Housing

synthetic

 PA66
Wire design ø0.45 mm steel rope (stainless)
Extension force ≥3.9 N  
Acceleration ≤24 m/s2  
Weight ~0.35 kg  

Electrical data

Analog interface

Feature Technical data Additional information
Operating voltage 9 … 32 V DC ambient condition MH,
at output 0 ... 5 V, 0.5 ... 4.5 V,
0.25 ... 4.75 V, 1.0 ... 4.9 V, reverse polarity protected
  12 … 32 V DC ambient condition MH,
at output 0 ... 10 V, reverse-polarity protected
  12 … 32 V DC ambient condition MH,
at output 0 ... 20 mA, 4 ... 20 mA,
but UB > Uload +2.0 V, reverse-polarity protected
  24 V DC ±20 % ambient condition CE, reverse polarity protected
Current consumption <40 mA at 24 V DC, per encoder
  <80 mA at 12 V DC, per encoder
Power input <1 W without load, per encoder
Parameter storage 105 cycles also applies to calibration operations
Digital inputs 4 limit inputs (redundant)
  2 limit imputs (not redundant)
Input signal level high >8.4 V  
Input signal level low <2.8 V  
Output voltage 0 … 10 V load current <10 mA
  0 … 5 V load current <10 mA
  0.5 … 4.5 V load current <10 mA
  0.25 … 4.75 V load current <10 mA
  1 … 4.9 V load current <10 mA
Output current 0 … 20 mA load ≤500 Ω
  4 … 20 mA load ≤500 Ω
Linearity tolerance ±0.25 % 2500 mm measurement length
Settling time <150 ms  
Type of connection plug connection system KV1H accessory

CANopen interface

Feature Technical data Additional information
Operating voltage 9 … 32 V DC ambient condition MH, reverse polarity protected
  24 V DC ±20 % ambient condition CE, reverse polarity protected
Current consumption <40 mA at 24 V DC, per encoder
  <60 mA at 12 V DC, per encoder
Power input <1 W per encoder
Parameter storage 105 cycles also applies to calibration operations
Linearity tolerance ±0.25 % 2500 mm measurement length
Interface ISO 11898-1/2, not galvanically isolated CANopen, CiA 301, CiA 305, CiA 406
Address 1 ... 127 Node ID, via SDO or Layer Setting Service (LSS)
Baud rate 20 kbit/s  
  50 kbit/s  
  125 kbit/s  
  250 kbit/s  
  500 kbit/s  
  800 kbit/s  
  1 Mbit/s  
Cycle time typical 1.5 ms  
Settling time <150 ms  
Type of connection plug connection system KV1H accessory

CANopen Safety interface

Feature Technical data Additional information
Operating voltage 9 … 32 V DC ambient condition MH, reverse polarity protected
  24 V ±20% ambient condition CE, reverse polarity protected
Current consumption <40 mA at 24 V DC, per encoder
  <60 mA at 12 V DC, per encoder
Power input <1 W  
Parameter storage 105 cycles also applies to calibration operations
Linearity tolerance ±0.25 % 2500 mm measurement length
Interface ISO 11898-1/2, not galvanically insulated CANopen Safety, CiA 301, CiA 305, CiA 406, EN50325-5
Address 1 ... 127 Node ID, via SDO or Layer Setting Service (LSS)
Baud rate 20 kbit/s  
  50 kbit/s  
  125 kbit/s  
  250 kbit/s  
  500 kbit/s  
  800 kbit/s  
  1 Mbit/s  
Cycle time typical 1.5 ms  
Settling time <150 ms  
Type of connection plug-in connection system KV1H accessory

System data

Feature Technical data Additional information
Scanning magnetic  
Resolution 12 bit analog output
  0.1 mm CANopen, SAE J1939, CANopen Safety
Repeat accuracy ±0.15 mm unidirectional
Measuring range 0 … 2500 mm measurement area can be used flexibly between 0 … 2500 mm
Travel speed ≤2 m/s  
Failure rate 290 year(s) analog output not redundant, at 40° C (MTBF)
SN29500
  240 year(s) CANopen not redundant, at 40° C (MTBF)
SN29500
  540 year(s) analog redundant, at 40° C (MTBF)
SN29500
  460 year(s) CAN redundant, at 40° C (MTBF)
SN29500
  170 year(s) CAN Safety redundant, at 40° C (MTBF)
SN29500
  730 year(s) CANopen Safety, at 60° C (MTTFd value)
  156 FIT CANopen Safety, at 60° C (PFH) 1 FIT = 1.0 E-09 1/h
  84 % CANopen Safety, at 60° C  (DCavg value), IS13849-1, Appendix E.2

Ambient conditions

Feature Technical data Additional information
Ambient temperature -40 … 105 °C electronics
  -30 … 100 °C mechanics, optionally to 105° C
Storage temperature -40 … 85 °C  
Relative humidity 100 % condensation admissible in the mounted and plugged condition
Operating pressure <350 bar Pn based on ISO 19879
Overload pressure <450 bar Pmax based on ISO 19879
Test pressure 650 bar Pstatic based on ISO 19879
EMC EN 61326-1 ambient condition CE, industry immunity requirement, class B emission limit
  ISO 11452-1, -2, -3, -4, -5 ambient condition MH,
interference radiation EUB
  7637-1, -2 ambient condition MH,
transient pulses
  ISO 10605 ambient condition MH,
electrostatic discharge
(ESD)
Protection category IP67 EN 60529, installed with KV1H and suitable mating plug
  IP6K9K ISO 20653, fitted with KV1H and suitable mating connector
Shock resistance 1000 m/s2, 11 ms EN 60068-2-27
Vibration resistance 70 m/s2, 10 Hz … 2 kHz EN 60068-2-64

Ordering table

Feature Order data Specifications Additional information
Measuring range

A...

 1500, 2000, 2500 in mm  
 
Ambient conditions

BMH

 mobil hydraulics  

CE

 industrial hydraulics  
 
Interface

C0/5V

 0 … 5 V voltage output

0/10V

 0 … 10 V voltage output

0.25/4.75V

 0.25 … 4.75 V voltage output

0.5/4.5V

 0.5 … 4.5 V voltage output

1.0/4.9V

 1.0 … 4.9 V voltage output

0/20mA

 0 … 20 mA current output

4/20mA

 4 … 20 mA current output

CAN

 CANopen  

CANs

 CANopen Safety  
 
Redundancy

DNR

 not redundant  

R

 redundant  
 

Ordering key

SGH25-A-GW6-B-C-D-M1-DS-S