Delta Tau GEO BRICK LV User Manual

Page of 440
 
Turbo PMAC User Manual 
160
 
Motor Compensation Tables and Constants 
Ixx63: Integration Limit 
Ixx63 is a saturation limit for the integrator, which limits the magnitude of the integrator output.  If set to 
a negative value, it trips the servo loop with a fatal following error if the integrator saturates.  Setting 
Ixx63 to 0 clears the integrator and thus its output.  (Setting integral gain term Ixx33 to 0 only stops 
further input to the integrator.) 
Ixx64, Ixx65: Deadband Compensation 
Ixx64 and Ixx65 permit both the creation of a deadband and compensation for physical deadband (as in 
proportional hydraulic valves).  Ixx65 specifies the magnitude of the deadband compensation zone in 
terms of magnitude of the servo following error.  Ixx64 specifies the gain inside that zone relative to the 
overall proportional gain Ixx30.  Positive values of Ixx64 increase the gain inside the zone, compensating 
for physical deadband; negative values of Ixx64 decrease the gain inside the zone, with Ixx64=-16 
producing true deadband. 
n=-16
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