MK Magnetic Absolute Linear Encoder

by Precizika Metrology

Non contact absolute magnetic linear encoder MK has measuring length up to 30 m.

The encoder is used to convert linear displacements of key machine components into electrical signals containing information about components absolute position.

Encoder consists of metal based magnetic band MP, reading head and protective steel cover CV.  Encoder also could be supplied with protective aluminum support SP (instead of protective cover CV), which is mounted on machine for magnetic band protection. 

The encoder has two versions of serial interface SSI or BiSS C.  On option third encoder version is available:  with 2 analog sinusoidal signals with phase shift 90º C and amplitude approx. 1Vpp.

MK PARAMETERS

 

Pole pitch 2+2 mm
Measuring length up to 30 m
Incremental Signal sine wave 1 Vpp (optional)
Resolution 1 Vpp up to 1 µm (depending on CNC division factor)
Repeatability ±1 increment
Signal period 2 mm
Serial interface SSI or BiSS
Resolution absolute position 500, 100, 50, 10, 5, 1 µm
Accuracy ± 15 µm
Max. traversing speed 300 m/min   
Power supply (5...28 V) DC ±5% 
Current consumption with load   150 mA max. (with R=120 Ohms)   
Protection (EN 60529) IP67    
Operating temperature 0...+50 °C     
Storage temperature -20...+70 °C       
Permissible humidity 100%            
Permissible vibration (55...2000 Hz) 200 m/s²          
Permissible shock (11 ms) 1000 m/s²   
Weight of reading head 80 g      
Electrical protections from inversion of power supply polarity and from short circuit on output port              
Standard cable length / max. cable length 2.0 / 25.0 m (100m if power supply is 5V)

OUTPUT SIGNALS 

Interface SSI Binary - Grey BiSS C unidirectional
Signals level EIA RS 485 EIA RS 485
Clock frequency 0.1 ÷ 1.25 mhZ 0.1 ÷ 4 MHz
n Position bit 26 + 2 + bit
Tc 12 ÷ 65 µs 12 ÷ 20 µs