ComNav 1500 - Optional Fine Tuning Parameters

ComNav 1500 / 1510 Autopilot - 49 -
9.1 Optional Fine Tuning for Special Applications
Potentiometer adjustments, functionality on Distribution Unit.
VR1: Anti-hunt control for rudder: Inappropriate adjustment could result in steering
oscillations or degradation of steering performance. The potentiometer is factory
set at minimum deadband setting. Adjustment of this potentiometer can be used to
adjust deadband for rudder response, compensating for slack in steering system,
and/or lack of stiffness in cylinder support.
VR2: Analog External Rudder Angle Indicator Instrument deflection adjustment (if
applicable).
VR3: Analog External Rudder Angle Indicator Instrument offset adjustment (if
applicable).
VR4: Factory set; counter rudder delay primarily used on large vessels (over 100’ in
length).
VR5: Control head digital display Rudder Angle Indicator offset adjustment;
potentiometer is factory set; to be minor adjusted by Autopilot technicians if rudder
transmitter linkage can not be adjusted; inappropriate large adjustments could
result in poor Autopilot performance; do not adjust when in full follow up steering
mode. This is not available on 1510 Distribution Unit.
VR6: Current limit adjustment for servo drive; potentiometer is factory set; do not
adjust.