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2.1.3 Control Transfer from DP to JC Panel
To change over from DP Operation to JC Operation (or vice-versa) perform the following actions:
1. Check that the AlphaDynaPos JC system is in good working order.
2. Set the Joystick and the Heading knob on the DP Operator Panel and on the JC Operator Panel, in the neutral
position.
3. Set the mode switch from DP to JC.
The DP station will release control.
4. Repeat the procedure of 2.1.2, but now on JC.
For DP2 systems the settings between DP1 and DP2 stations are synchronized. The settings between DP and joystick
stations are not synchronized.
Note Joystick system works independently from DP system. When changing control from DP system to JS
(Joystick system) the wind and current compensation settings are not taken over. Also other settings such as
gain and rotation speed are not taken over.
2.1.4 Control Transfer from DP/JC to Individual Control
To change over from DP Operation or JC Operation to Individual Thruster/Rudder Control perform the following actions:
1. Set the Joystick and the Heading knob in neutral position.
2. Set each thruster/rudder in neutral position.
3. Set the mode switch to 'Manual'
The DP station will release control.
Note When the mode switch is set to Manual, control is immediately released from the DP – JC and control is
taken over by the Individual Controllers.
2.1.5 Auto Control Transfer on Fail Condition
When the system is in auto position mode the control will change from the active DP server to the back-up server, in
case of a critical failure. See chapter Diagnostics and Alarms on page 70 for list of failures and system responses.
This function is only for DP2 systems.
For this function to work, the back-up DP server must be in good condition. Following control transfer press the CTRL
button to indicate in the system which operator panel to use.
The failures on the active system that will cause a control transfer are:
1. Heading reference not available.
2. Position reference not available.
3. DP system failure:
•
Loss of connection with the IO-controller.
•
DP-controller failure.
2.1.6 Simulation Mode
The simulation mode is meant to explain and teach users how the system generally operates. When the system is in
simulation mode it cannot be used for vessel operation.
When setting the system into simulation mode it should not be in control. See Figure 10: Simulation Mode - No Control
on page 26. The settings used during simulation are synchronized to the other DP station, with the exception of
specific simulation environment settings made on the simulation screen. These specific simulation settings are the Wind
(speed and direction), Wind Variation (in speed and direction), Automatic Wind Rotation, Current Speed and Current
Direction. See the simulation settings block in the simulation screen (Figure 41: Simulation Screen on page 52).
25 | Operation
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