Danfoss VLT 5000 Operating Instructions Manual page 12

Encoder input 2, MK3D (primary)
Terminal designations ......................................................................................... A2, A2 , B2, B2 , Z2, Z2
Incremental:
Signal level ...........................................................................................................................5 V differential
Signal type ...................................................................................................................... Linedriver, RS422
Input impedance ................................................................................................................................ 120 Ω
Maximum frequency ...................................................................................... 220 kHz (at 50 % duty cycle)
Phase displacement between A and B..........................................................................................90° ±30°
Absolute:
Signal level ...........................................................................................................................5 V differential
Signal type ............................................................................................................................................. SSI
Protocol ...................................................................................................................................... Gray code
Data length ......................................................................................................................................... 25 bit
Parity....................................................................................................................................................none
Clock frequency.................................................................................................................. 105 or 260 kHz
Maximum positions per revolution .......................................................................................................8192
Maximum number of revolutions .........................................................................................................4096
Encoder cable:
Cable type... Twisted pair and screened. Note: Please observe the prescriptions of the encoder supplier
Cable length.................................................................Observe the prescriptions of the encoder supplier.
Absolute encoder is tested ok up to 150 meter cable at 105 kHz clock and 100 m at 260 kHz clock.
(Tested with TR electronic encoder type CE-65 M 8192*4096 and appropriate cable prescribed by TR
electronic.)
Maximum allowed time delay between clock and data signal measured at the controller terminals...........
................................................................................................................................ 105 kHz clock = 9µsec
............................................................................................................................ 260 kHz clock = 3.5 µsec
MG.50.P3.02 - VLT is a registered Danfoss trademark
Positioning Controller
11