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SELECTION OF RESOLVER REFERENCE INPUT RESISTOR 

This is not at all critical. The resistor should allow between approximately 1 and 5 mA to pass.  
1:1 input. 

R9 = V/1 to V/5 K ohms 

30:1 input. 

R10 = V/1 to V/5 K ohms 

 
Example: For 36 volt reference a resistor ranging from 8K2 to 33K would be OK. Power rating = 2 x ( V x V ) / R. For this 
example 22K 0.25 watts is used and is already fitted in the interface. 
 

 
FINE RATIO SETTING SWITCH SW1 

 
SW1     30:1    1:1 

 

 

 

ON 

 

 

OFF 

 

 

 

ON 

 

 

OFF 

 

 

 

ON 

 

 

OFF 

   OFF    OFF 

 

 
ANGLE CORRECTION SWITCHES  

Set SW2 and SW3 all OFF until the installation is finalised. They will allow a fine adjustment to be made to compensate 
for misalignment of the fine resolver. 
 

CABLE CONNECTIONS 

Cable screens should be grounded. Data cable should be screened twisted pair to comply with NMEA 0183 rules. Other 
cables will probably work well.  
 
KW910X2   SK4 

POWER INPUT  

+24v 

Ground 

0 volts 

 
KW910X2  SK1 

COARSE RESOLVER 1:1 RATIO 

R1 

R2 

S1 

S2 

S3 

S4 

 
KW910X2  SK2 

FINE RESOLVER 30:1 RATIO 

R1 

R2 

S1 

S2 

S3 

S4 

 
  
KW910X2  SK3 

DATA IN AND OUT 

IN - A 

IN - B 

GND or 
SCREEN 

OUT - A 

OUT – 0 

OUT - B 

 

 

 

 

 

 

 

 
POWER & DATA DISTRIBUTION 
SK13 

1 2 

From KW910-X2 

DATA IN A 

DATA IN B 

 
 
POWER & DATA DISTRIBUTION 

TO REPEATERS 

+24volts 

0 volts 

Data A 

Data 0v 

Data B 

 

 

 

 

 

 

 
STATUS LEDS 
SK14 

1 & 2 

3 & 4  

5 & 6 

Contact close 

Available 

Simulation 

Fault 

 
AC POWER SK9 

115/230v Line 

Ground 

Line 

SET SW2 BEFORE SWITCHING ON! 

 

 

 

 

Содержание KW910-X2

Страница 1: ...FIRST DRAFT DUAL RESOLVER TO DIGITAL INTERFACE KW910 X2 ADITEL MARINE ELECTRONICS ...

Страница 2: ...n guide 4 Checking operation in service 5 Technical description 6 Test methods 7 Layout and schematics SALES AND SUPPORT LANDWATER MARINE DESIGN AND MANUFACTURE ADITEL MARINE ELECTRONICS Cefn Laboratories Abergavenny UK Tel 44 0 1873 840405 Fax 44 0 1873 840106 Email af aditel btinternet com Web site www aditel org uk Technical manual update 20 02 2005 by the designer Andrew Fairgrieve ...

Страница 3: ... 30 1 fine ratio is programmed in DATA INPUT NMEA 0183 port Data input here is passed through to the output This allows the combining of data from other instruments Only small amounts may be passed because it will slow the output rate of heading OUTPUT NMEA 0183 RS422 RS232 compatible Data NMEA 0183 HEHDT xxx x T hh cr lf 1 per second PADI sentences give coarse fine final angle Update rate 20 Hz F...

Страница 4: ...ved The fine ratio resolver is used to indicate the exact heading within one of thirty 12 degree sectors from 000 012 024 etc up to 348 degrees The 1 1 resolver indicates the sector in which the heading lies The KW910 X2 assumes the heading derived from the sector is within 6 degrees of the 1 1 angle You may need to change the phase of the reference just swap the wires round to make the output rot...

Страница 5: ...t to be made to compensate for misalignment of the fine resolver CABLE CONNECTIONS Cable screens should be grounded Data cable should be screened twisted pair to comply with NMEA 0183 rules Other cables will probably work well KW910X2 SK4 1 2 3 POWER INPUT 24v Ground 0 volts KW910X2 SK1 1 2 3 4 5 6 COARSE RESOLVER 1 1 RATIO R1 R2 S1 S2 S3 S4 KW910X2 SK2 1 2 3 4 5 6 FINE RESOLVER 30 1 RATIO R1 R2 S...

Страница 6: ...the gyro 3 If not then the resolver is not wired in the standard way You will have to try different tests and adjustments to make it so Here is some guidance You can not proceed until the data is nearly correct and to do that logically you will have to use a PC to display the data CHECKING THE DATA AND ADJUSTING PHASING 1 1 RESOLVER PROCESSOR Read the data at TP1 Alternatively read the data at SK3...

Страница 7: ... degrees x 1000 f HH is the checksum g This message is given once per second It allows the repeaters to display the performance of the interface 2 Short message PADIa bbbbbb HH cr lf a a 0 or 1 giving status of the final computation b Final heading angle c This message is given whenever heading changes the fastest update 3 Correction applied message PADIC aaaa bbbb HH cr lf a The binary correction...

Страница 8: ...ge has been applied to data outputs and the warranty does not cover this Even if it happens it s easy to fix because the output chips SN74HCT240N and the 47R 1 8th watt resistors are easily available worldwide The data output from module 1 is prefaced with to indicate the data is to be used by module 2 rather than being passed on The data output from module 2 does not send that character unless it...

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