5.7.1.1.4 Function Code C3 – Proportional Pause Time
The Proportional Pause Time feature provides engine deceleration, followed by a pause in
throttling to the commanded speed in the new desired direction, upon a Full-Speed
Reversal. This pause time is proportional to how much throttle is being commanded and for
how long. In order to build up to the pause value set, the vessel must be at full throttle and
Ahead six (6) times the pause set. The default pause from Astern to Ahead is 1/2 the
Proportional Pause C2 value set.
When C2 Proportional Pause is set to 00, the throttle position drops to Idle and the
transmission remains engaged Ahead; the pause that follows is in proportion to the prior
Control Head lever position and how long the lever had been in that position before the
reversal.
This Function selects the amount of time that the Clutch will stay engaged or at Neutral
(depending on C2 setting) while performing a Full Speed Reversal.
The available Values are 00 to 99 seconds. The default Value is 03 seconds.
To change the Value (Refer to Sections Section 5.2: Activating Set Up Mode and Section
5.3: Storing Values To Memory):
A Scroll to Function Code C3.
B Activate Set Up Mode.
C Scroll Up or Down to the desired Value.
D Store the Value to memory.
Figure 5-33: Display LED Function C3 Set Up Activated
5.7.1.1.5 Function Code C4 – Proportional Pause Ratio
00 - 2:1 Ratio
This is the default setting and determines how the value set in the Proportional Pause Time
C3 Function is applied. The number of seconds selected is for an Ahead to Astern maneuver
only. An Astern to Ahead maneuver will be 1/2 of the Proportional Pause Time selected.
This is the typical selection since most vessels do not reach the same throttle in Astern as
they would in Ahead. Therefore, the time required to get to a sufficient water speed for a
safe reversal is significantly less.
01- 1:1 Ratio
When this setting is selected, the value set in the Proportional Pause Time C3 is the same for
both Ahead to Astern, as with Astern to Ahead maneuvers. This may be selected when the
vessel reaches the same water speed in both directions, as would be the case with a Double
Ended Ferry. Another application where this option may be selected would be the control of
a Bow or Stern Thruster.
This Function Code selects whether the Proportional Pause Time is the same in Ahead and
Astern or whether the time in Ahead is twice that in Astern. Standard vessels with a bow
and a stern typically select a pause which is twice as much in Ahead compared to Astern.
NOTE: If C2 Proportional Pause is set to 02 Fixed Neutral Delay Enabled, Function C3 Proportional Pause Time
will set the Fixed Neutral Delay duration.
NOTE: The Value for this Function Code should be determined during the Sea Trial.
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