DSC - Outputs
Page 23 of 80
Installation
Cable conductor (16 AWG) is the suggested minimum diameter based on
a maximum cable length of 200 ft. (61 m). For each additional 100 ft. (30
m) of cable length, the diameter of cable conductors should be increased
by 1 AWG.
Directional solenoid signals are to be routed through rudder angle limit
switches which serve to stop the steering gear travel before any
mechanical stops are reached. Rudder limit switches are to be coupled to
the rudder stock through a mechanical linkage.
Commissioning
Information regarding the type and specifications of the directional
solenoid used are entered through the DSC Setup Software’s Valve
Settings window (see section 4.1.1
), or through the keypad setup’s DSC
menu screen (see section 4.2.1
).
1.4.2 Fast Rudder Solenoid
Description
This output provides commands to control a high speed flow control
solenoid valve included with an on-off directional valve. The DSC controls
this output sending a full voltage signal to energize the high speed valve
that will increase the flow rate of the HPU. This output signal is only
operational if the switched power signal is applied to the DSC. Arranging
the signal in this manner ensures that the solenoid is only being energized
when power steering is available.
This signal allows the operator to select between two levels of rudder
speed with an on-off HPU. In the Fast Rudder mode of steering control,
the DSC controls this output in order to step the rudder speed up and
down during larger rudder movements. The rudder speed is reduced
during final approach to the commanded rudder position. Controlling the
Doc No.: MAN01504, 20-02-06 DSC 100 & MCP 100 Manual
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