User guide
Xenus XTL User Guide    Specifications 
Copley Controls Corp.  37 
3.4: Control Loops 
Type 
Current 
Velocity 
Position 
100% digital. 
Sampling rate (time) 
Current 
Velocity 
Position 
15 kHz (67 Ps) 
3 kHz (333 Ps) 
3 kHz (333 Ps) 
Current Loop Small Signal 
Bandwidth 
> 2 kHz (Tuning and load impedance dependent) 
Velocity Loop Filters 
Type 
Frequency Range 
Programmable 
Low Pass, 1 Pole 
Low Pass, Butterworth, 2 Poles 
Bi-Quadratic, 2 Poles & 2 Zeros 
Programmable 
20 - 1500 Hz 
Bus Voltage Compensation  Changes in bus or mains voltage do not affect tuning. 
3.5: Regen Circuit Output 
Model  XTL-230-18 (-R, -S)  XTL-230-36 (-R, -S)  XTL-230-40 (-R, -S) 
Continuous Power  2 kW  4 kW 
Peak Power  5 kW  10 kW 
Minimum Resistance 
30 ๎ 15 ๎
Minimum Resistor Wattage  25 W  50 W 
Turn On Voltage  +390 Vdc 
Turn Off Voltage  +380 Vdc 
DC Bus Capacitance 
1760 ยตF nominal 
Regen Energy Absorption 
Capacity 
Input Voltage 120 Vac  108 joules 
208 Vac  57 joules 
240 Vac  32 joules 
3.6: Digital Command Input 
Pulse and direction, 
Count up/ count down 
maximum rate 
 2 MHz (with active driver) 
Digital Position Command 
Quadrature A/B encoder 
maximum rate 
2 M line/sec (8 M count/sec after 
quadrature) 
PWM frequency range  1 kHz - 100 kHz Digital Current & Velocity 
Command 
PWM minimum pulse width  220 nSec 










