DSC - Outputs
Page 24 of 80
rudder position in this manner provides for more precise and quiet control
of rudder movements as well as reducing wear and tear on the
mechanical components of the steering gear.
Specifications
Output Voltage............................. 12 or 24 VDC
Maximum Output Power .............. 48 W
Connector ....................................5.08mm pitch screw terminals
Installation
Fast rudder solenoid valves are not fitted with all steering systems.
Proportional steering control systems will not include a fast rudder
solenoid valve. Refer to the steering gear hydraulic system for information
regarding the utilization of this output.
Commissioning
If the Fast Rudder Solenoid output is used the Dual Speed option must be
turned on through the DSC Setup Software’s System Configuration
window (see section 4.1.1
), or through the keypad setup’s DSC menu
screen (see section 4.2.1
).
1.4.3 Digital Helm Manifold Solenoids
Description
These signals provide control of the Digital Helm Manifold (DHM) Bypass
and Limit solenoid valves. When the Bypass solenoid is energized the
digital helm pump’s hydraulic output lines are connected together allowing
the helm pump to turn without pumping hydraulic fluid to the steering gear.
Energizing the bypass solenoid puts the digital helm pump into its power
steering mode of operation. With the Bypass solenoid de-energized the
digital helm pump is directly connected to the steering gear and therefore
in its manual mode of operation. If power to the DSC fails or is
disconnected manual steering control will be automatically invoked.
The Limit solenoid valve serves to provide feel on the helm when the
rudder position commanded by the digital helm is at hard over. When the
digital helm’s rudder command reaches hard over the DSC will energize
the limit solenoid which will not allow the digital helm to continue turning.
The number of wheel turns representing a hard over to hard over
command is adjustable through the DSC setup.
Doc No.: MAN01504, 20-02-06 DSC 100 & MCP 100 Manual
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