NavPilot 300 RRU Values

JFNZ

New member
Hi, I'd like to know what RRU input signals the NavPilot 300 FAP3012 Processor will accept. It has a 4-wire connection, 2 of which are signal inputs. Are these voltage or resistance, or either and what is the signal range?
I've read in this forum that it accepts resistance signal [ohms] but then the Dometic SmartStick AR4502 appears to be compatible and its output signal is voltage [0.5v-4.5v]. Can't seem to find any info in the install manual etc. Thanks
 
First answer is 4 wire connection is resistance using a 2K ohm pot. How to select which RRU is being used is shown below.
The selection is made in the Ship's Characteristics section of the Installation Menu. When Rotary (Inboard) is selected, it's looking at a 2K ohm pot to determine where the rudder is (after setup in Rudder Limit Setup). When set to Linear (outboard), it's looking at voltage levels across a 5Vdc input.
1685979671572.png

Here's how they are wired from the Interconnection Diagram in the Installation Manual:
1685980004393.png
 
First answer is 4 wire connection is resistance using a 2K ohm pot. How to select which RRU is being used is shown below.
The selection is made in the Ship's Characteristics section of the Installation Menu. When Rotary (Inboard) is selected, it's looking at a 2K ohm pot to determine where the rudder is (after setup in Rudder Limit Setup). When set to Linear (outboard), it's looking at voltage levels across a 5Vdc input.
View attachment 4447

Here's how they are wired from the Interconnection Diagram in the Installation Manual:
View attachment 4448
Great. Thanks for the clarification.
 

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