OPERATION AND INSTALLATION
RCI-4100 SYSTEM
MAN-1111 Rev H
©Copyright 2015 LSI-Robway Pty Ltd
Page 56
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A test weight of 20 t is lifted on the Main winch at the highest possible boom angle, eg 80º
(NOTE: It is not necessary to use a test weight, the hook block alone will suffice for the test).
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The 20 t load is luffed through the entire angle range and the displayed load is seen to rise to
25.3 t at the lowest possible boom angle eg 30º.
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The error in this reading is the highest displayed load minus the known test weight i.e. 25.3 t -
20.0 t = 5.3 t error.
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Hence, in this example:
o
The “Load / Angle Correction Factor “would be entered as 5.3 t.
o
The “Low Angle for Load Correction” would be entered as 30º
o
The “High Angle for Load Correction” would be entered as 80º.
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Repeat the same procedure on the Aux winch.
7.4.11.
Set Main Winch Rigging SWL
To set the main winch rigging SWL:
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Enter calibration mode and select Main Winch Rigging SWL function code.
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If the main hook block is part of the load chart, enter a value of 0.2.
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If the main hook block is not part of the load chart, enter a value slightly above the actual main
hook block weight.
7.4.12.
Set Aux Winch Rigging SWL
To set the aux winch rigging SWL:
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Enter calibration mode and select Aux Winch Rigging SWL function code.
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If the aux hook block is part of the load chart, enter a value of 0.1.
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If the aux hook block is not part of the load chart, enter a value slightly above the actual main
hook block weight.
7.4.13.
Slew Encoder Operation (If Installed)
Check correct slew encoder operation.
•
If the direction is incorrect, access function code F-xx and change the value (1.0 or -1.0).
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Slew the crane, as the slew proximity switch target passes the target, slew position should
reset to the 0.0. If this is not the case, the proximity switch or the proximity switch target
should be re-aligned (see Section 2.6.2).
•
Check that displayed slew position is accurate. If the position is not correct access function
code F-xx and change this value using the following formula: -
•
F-xx Value
= No of teeth on Slew Ring Gear X 120(No pulses/rev encoder)
No of teeth on the Encoder
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This will give the theoretical value. Further slight adjustment of the F-xx value will be required
until the correct slew position is achieved.
7.4.14.
Testing the Slack Rope Function
This function may be used to automatically activate “hoist up” on the selected winch (Main or Aux) to
maintain tension on the winch rope when it gets slack, e.g. when lowering the hook block on the deck
of a boat/vessel or platform, etc.
Function codes are used to set the load activation threshold for each winch. When the load sensed by
the selected winch is equal to or less than the value set, the function is activated.
This function controls a digital output (refer RCI System Configuration Documents in Attachments) of
the RCI Control Unit which de-energises when the load value is at or below the set limit.
The factory default setting for main winch is typically -0.4t and -0.2t for the auxiliary winch. Enter the
appropriate function code and enter the “weight” of the empty Main hook block. Repeat the same for
the Aux block using the appropriate function code. This setting will enable the function to operate
when the load on either block gets lower than its weight (i.e., slack condition).
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