User guide
Specifications    Xenus XTL User Guide 
40  Copley Controls Corp. 
3.14: Hall Switch Inputs 
Channels 3 
Type  74HC14 Schmitt trigger w/ RC Filter 
10 k pull up resistor to internal +5 Vdc 
Input Voltage Range  0 Vdc - +28 Vdc 
Low Level Input Voltage  < +1.35 Vdc 
High Level Input Voltage  > +3.65 Vdc 
Scan Time 
67 µSec 
RC Filter Time Constant 
33 µSec 
Function  Commutation of brushless motors in trapezoidal mode. 
Commutation initialization and phase error detection in sinusoidal mode. 
3.15: Resolver Interface 
Type  Transmit, 1:1 to 2:1 transformation ratio 
Resolution  14 bits (equivalent to a 4096 line quadrature encoder) 
Reference Frequency  7.5 kHz 
Reference Voltage  3 Vrms, auto-adjustable by amplifier for proper feedback levels. 
Reference Max Current  100 mA 
Max RPM  10,000 
Function  Incremental or analog encoder or resolver required for sinusoidal commutation 
and position or velocity modes of operation.
3.16: Multi-Mode Port 
Channels 3 
Type  Bi-Directional, Differential RS-422 
Non-isolated 
Signals  A, /A, B, /B, X, /X 
Input Voltage Range  ±7 Vdc 
Differential Input Threshold  ±0.2 Vdc 
Termination Resistance  None 
Function 
Programmable 
Output Mode 
Buffered primary incremental encoder 
Emulated incremental encoder from analog encoder or resolver 
Input Mode 
Secondary incremental encoder input 
Current / Velocity mode, PWM input 
Position Mode, Digital command input 
Maximum Frequency 
Output Mode 
  Buffered Encoder 
  Emulated Encoder 
Input Mode 
  PWM Input 
  Digital Command 
  Secondary Encoder 
5 MHz Line (20 Mcount/sec) 
4.5 MHz Line (18 Mcount/sec) 
100Khz 
5 MHz (50% Duty Cycle) 
5 MHz Line (20 Mcount/sec) 










