SIMRAD DUAL

GC80 and GC85 Dual Gyro systems have been designated for any size of vessels which requires more than one gyro system. The system includes one common control unit, from which each gyro system may be operated individually or as one dual system. A GC80/85 gyro system enhances the navigation capabilities and reliability. It eliminates the inconvenience and limitations of magnetic compasses, and provides a variety of electrical outputs to supply accurate and consistent heading information to other navigational equipment. - A GC80 Dual gyro system is designed for vessels with speed up to 30 knots. The system complies with IMO A.424 (11) and Wheel Mark Specifications. - A GC85 Dual gyro system is suitable for high speed vessels with speed up to 70 knots. It complies with IMO A.821 (19) HSC. GC80 standard and GC85 High Speed Dual gyro systems have different sensitive elements, but use identical GC80 Dual control unit. The systems are identified with divergent dip switch settings in Master compass and in the control unit.

Overview

Specification

Accuracy
   

Settling time

:

within 3 hours

(if startup heading is within +/-5° of actual heading)

Settle point error

:

less than ±0.1º

RMS value of the difference

:

less than 0.1º

Repeatability of settle point error

:

less than ±0.1°

Roll and pitch error

:

less than ±0.4°

Static error

:

less than ±0.1°

Settle point error under general conditions

:

less than ±0.4°

Note! Accuracy at equator. For other latitudes, accurancy to be multiplied by *(1/COS f), where f = Latitude.

     

General Specification

   

Follow-up speed

:

> 75°/sec

Gimbal freedom for both roll and pitch

:

 ±45°

Range of speed correction

   

GC80

:

0-50 knots / latitude (0° - +70°)

GC85

:

0-70 knots / latitude (0° - +70°)

Main power supply

:

100/110/115/200V AC, 50/60Hz

Power supply for alarm and back-up

:

24V DC, 70W

Voltage fluctuation

:

AC ±10%, DC -20% - +30%

Frequency variation

:

±5%

     

Power Consumption

   

Start

:

within 140VA

Ordinary

:

within 70VA

Repeater

:

within 17VA

Repeater type

:

24V DC – 6 step/°

Number of step repeater connections

:

4

Number of NMEA connections

:

10

Repeater back-up circuits

:

4+10

     

Input Specification

   

Serial input signal (GPS)

   

Circuits

:

1

Electrical

:

RS422/MNEA0183/Current loop

Baud rate

:

4800 bps

Data bits

:

8 bits

Parity

:

None

Stop bits

:

1

Transmit freq.

:

1 – 5Hz

Input format

   

$--GGA,x,xxxx.xx,N,xx.x,E,x,~*hh<CR><LF>

 

$--GLL,xxxx.xx,N,xxxx.xx,E,*hh<CR><LF>

   

$--VTG,xx,T,xx,M,xx.x,N,xx,K*hh<CR><LF>

   

Serial input signal (External heading)

   

Circuits

:

1

Electrical

:

RS422/NMEA0183

Baud rate

:

4800/38400 bps

Data bits

:

8 bits

Parity

:

None

Stop bits

:

1

Transmit freq.

:

1 - 50Hz/20 – 50Hz

Input format

   

$--HDT,xxx.x*hh<CR><LF>

   

$--HDG,xxx.x*hh<CR><LF>

   

Serial input signal (LOG)

   

Circuits

:

1

Electrical

:

RS422/NMEA0183

Baud rate

:

4800 bps

Data bits

:

8 bits

Parity

:

None

Stop bits

:

1

Transmit freq.

:

1 - 50Hz

Input format

   

$--VBW,x.x,x.x,A,~*hh<CR><LF>

   

PULSE signal (LOG)

   

Circuits

:

1

Electrical

:

200/400 p.p.n.m., dry contact

     

Output specification

   

Serial output signal 1

   

Circuits

:

10

Electrical

:

RS422/485

Baud rate

   

GC80

:

4800 bps

GC85

:

38400 bps

Data bits

:

8 bits

Parity

:

None

Stop bits

:

1

Transmit freq.

   

GC80

:

10Hz

GC85

:

50Hz

Output format

   

Data no.1

   

$ HEHDT,xxx.x,T*hh<CR><LF>

   

Data no.2

   

$ HEROT,-xxx.xx,A*hh<CR><LF>

   

Data no.3

   

$ PCICM,HEALM,xxxx,x,xx*hh<CR><LF>

   
     

Serial output signal 2 *1

   

Circuits

:

10

Electrical

:

RS422/485

Baud rate

   

GC80

:

4800 bps

GC85

:

38400 bps

Data bits

:

8 bits

Parity

:

None

Stop bits

:

1

Transmit freq.

   

GC80

:

10Hz

GC85

:

50Hz

Output format

   

Data no.1

   

$ HEHDT,xxx.x,T*hh<CR><LF>

   

Data no.2

   

$ PTICM,--xxxx,x,xx,*hh<CR><LF>

   
     

STEP signal

   

Circuits

:

4

Electrical

:

24V DC – 6 step/°

     

RATE OF TURN signal

   

Circuits

:

1

Electrical

:

+/-10V (+/-120°) (default),

     

Alarm output

   

Potential free

:

NO/NC

Running contact

   

Potential free

:

NO/NC

     

Physical Dimensions

   

GC80/GC85 Master Compass

   

Height

:

438 mm (17.2”)

Width

:

340 mm (13.4”)

Depth

:

340 mm (13.4”)

Weight

:

23 kg (51lbs)

GC80 Dual Control Unit

   

Height

:

561 mm (22.1”)

Width

:

467 mm (18.4”)

Depth

:

182 mm (7.2”)

Weight

:

23kg (51lbs)

     

Power

   

GC80/GC85 Master Compass

   

Voltage input

:

Supplied from Control unit

GC80 Dual Control Unit

   

Voltage input

:

110/220V AC

Backup voltage

:

24V DC

Power consumption per Master compass (incl. Master compass)

Starting

:

1.5A at 100V AC

Running

:

1.2A at 100V AC

     

Environmental Specification

   

GC80/GC85 Master Compass

   

Enclosure material

:

Aluminum

Color

:

 Black

Temperature range

   

Operating

:

-10 - 50°C (14 - 122°F)

Storage

:

-25 – 70°C (-13 – 158°F)

Angular freedom of gimbal

:

±45° for roll and pitch

GC80 Dual Control unit

   

Enclosure material

:

Aluminum

Environmental protection

:

IP22

Color

:

Black

Temperature range

   

Operating

:

-10 - 50°C (14 - 122°F)

Storage

:

-25 – 70°C (-13 – 158°F)

 

 

Documents

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