User guide
Xenus XTL User Guide    Specifications 
Copley Controls Corp.  39 
3.10: Brake Output 
Channels 1 
Type  Current-sinking MOSFET, optically isolated from control/logic ground. 
Referenced to +24 Vdc logic supply. 
Internal fly back diode to +24 Vdc. 
Maximum Sink Current  1 A 
Low Level Output Resistance 
<0.2 
Function  Primary function is brake control. 
May be programmed to other functions. 
3.11: Encoder Power Supply Output 
Voltage Output  +5 Vdc ±2% 
Maximum Current Output  400 mA 
Short Circuit Protection  Fold-back current limiting 
Function  Provides power for motor encoder and/or Hall switches. 
3.12: Primary Encoder Inputs 
Channels 3 
Type  Differential RS-422 line receiver w/ RC filter 
Non-isolated 
Signals  A, /A, B, /B, X*, /X* 
Input Voltage Range  ±7 Vdc 
Differential Input Threshold  ±0.2 Vdc 
Termination Resistance 
121 
Maximum Frequency  5 MHz Line (20 Mcount/sec) 
Function  Incremental or analog encoder or resolver required for sinusoidal commutation 
and position or velocity modes of operation. 
* X is equivalent to Marker, Index, or Z channels, depending on the encoder manufacturer. This channel is only 
required in certain homing modes while under CAN control. 
3.13: Analog Encoder Inputs 
Channels 2 
Type Differential, non-isolated 
Signals Sin, cosine 
Nominal Voltage  1 Vdc-pk 
Maximum Voltage 
Differential 
Input to Ground 
±0.6 Vdc 
0 to +3.5 Vdc 
Differential Input Impedance 
121 
Bandwidth 230 kHz 
Interpolation  1 to 256, programmable 
Function  Incremental or analog encoder or resolver required for sinusoidal commutation 
and position or velocity modes of operation. 










