Instruction manual
20220562E 13
2 RF14XU RUDDER FEEDBACK UNIT
2.1 General
The rudder feedback unit transmits a signal proportional to the rudder
angle. It is mounted close to the rudder stock and is mechanically
connected to the rudder by a transmission link in a 1:1 ratio.
The RF14XU Rudder Feedback Unit consists of a glass-reinforced
non-flammable polyester housing with a mounting plate of sea-water
resistant aluminium. It contains a potentiometer, limit switches and an
electronic drive module. The electronic drive module contains a
voltage section and a frequency section.
The voltage section outputs a voltage to the rudder angle indicator(s)
which is proportional to the rudder angle. The voltage varies ±9 volts
around half the supply voltage.
The frequency section generates a variable frequency signal with 3400
Hz as midposition reference. This section is only used if a Simrad
autopilot is connected to RF14XU. The signal varies at a rate of 20
Hz/degree, increasing when the rudder moves to port and vice versa.
The shaft of the Feedback Unit is free to travel 360 degrees, but only
±90 degrees from midposition are used for signal control.
RF14XU is equipped with two sets of micro switches, which can be
used as electrical limit switches for the steering gear.
To Next Page
Loading...
