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FIRST DRAFT

DUAL RESOLVER TO DIGITAL

INTERFACE KW910-X2

ADITEL MARINE ELECTRONICS

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Summary of Contents for KW910-X2

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

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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