KONGSBERG, Gyro Compass MGC R2 For Ship / High Speed Crafts

The MGC R2 COMPASS system is IMO type approved as gyro compass for navigation purposes for use together with a heading and bearing repeater. Very high reliability is achieved by using Ring Laser Gyros with no rotational or mechanical wear-out parts.

The MGC R2 COMPASS system is IMO type approved as gyro compass for navigation purposes for use together with a heading and bearing repeater. Very high reliability is achieved by using Ring Laser Gyros with no rotational or mechanical wear-out parts.

The system can be operated as an inertial navigation system as well as a gyro compass with output of position and heading. Linear position and velocity measurements can then be output in up to four different points on the vessel.

FUNCTION

The MGC is a strap-down based gyro compass including three Ring Laser Gyros (RLG) and three linear accelerometers. The system can operate in Attitude and Heading Reference System (AHRS) mode and Inertial Navigation mode. In the AHRS mode input of speed and latitude data (VBW/VTG and GGA/GLL) is required. External time input is also required (ZDA). In this mode the system will output heading, roll, pitch and heave. In the Inertial Navigation mode input of latitude, longitude, height and time (GGA and ZDA) and PPS from a GNSS receiver is required. In this mode the product will output heading, roll, pitch, heave and position.

The system is delivered with Windows based configuration software, MRC+. In this software the user selects output formats on the different communication lines in addition to other configuration purposes.

DIGITAL I/O PROTOCOLS

MGC data is available through both Ethernet interface and serial lines enabling easy distribution of data to multiple users on board the vessel. Output protocols for commonly used equipment are available on five individually configurable serial lines and five Ethernet/UDP ports.

FEATURES

• 0.02° roll and pitch accuracy.
• 0.1° heading accuracy GNSS aided.
• No rotational or mechanical wear-out parts.
• Outputs on RS-422 and Ethernet.
• High output data rate (200 Hz).
• Small size, light weight and low power consumption.
• IMO type approved.
• Each MGC delivered with Calibration Certificate.
• Selectable communication protocols in the configuration software.

TECHNICAL SPECIFICATIONS

MGC R2 COMPASS

HEADING OUTPUT
Accuracy heading	0.15° RMS sec.lat
Accuracy heading (GNSS aided)	0.1° RMS sec.lat
Heading settling time to data available	<5 min from start-up
Heading settling time to full accuracy (typical)	17 min from start-up
Resolution	0.01°
ROLL AND PITCH OUTPUT
Output range	±90°
Resolution	0.001°
Angular rate noise	0.020°/s RMS
Accuracy	0.02° RMS
HEAVE OUTPUT
Output range	±50 m, adjustable
Periods (real-time)	0 to 25 s
Periods (delayed)	0 to 50 s
Heave accuracy (real-time)	5 cm or 5% whichever is highest
Heave accuracy (delayed)	2 cm or 2% whichever is highest
POSITION OUTPUT
Free inertial	20 nm/hr
ELECTRICAL
Voltage input	24 V DC (nominal (18 to 32 V DC)
Power consumption	Max. 13 W (typical 11 W)
COM1 through COM4	Serial port, bidirectional RS-422/IEC 61162-1 and IEC 61162-2
COM5	Serial port output RS-422 and PPS port input RS-422 electrical levels
Baud rate	Max. 115200 Baud
Ethernet UDP/IP (5 ports)	10/100 Mbps
Output data rate (max)	200 Hz
Timing accuary	1 ms
INPUT FORMATS
NMEA sentences	GGA, GLL, VBW, VTG, ZDA
OUTPUT FORMATS
NMEA sentences	GGA, GLL, VTG, HCR, HDT, ROT, THS
OTHER DATA
MTBF (service history based)	100 000 h
MTBF (computed)	50 000 h
WEIGHTS AND DIMENSIONS
Sensor unit	188.9 x 189.5 x 189.5 mm, 8 kg
MGC junction box	57.1 x 236 x 146 mm, 2 kg
Repeater junction box	57.1 x 115 x 104 mm, 0.5 kg
ENVIRONMENTAL SPECIFICATIONS
Operating temperature range
Sensor unit	-15 to +55°C
MGC junction box	-15 to +55°C
Repeater junction box	-15 to +55°C
Operating temperature range
Sensor unit	-25 to +70°C
MGC junction box	-25 to +70°C
Repeater junction box	-25 to +70°C
Operating temperature range
Sensor unit	IP66
MGC junction box	IP54
Repeater junction box	IP54

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