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CMZ700 LA BÀN CON QUAY

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Bài giảng Máy điện hàng hải biên soạn có nội dung trình bày các kiến thức cơ bản về máy đo sâu hàng hải, tốc độ kế, la bàn con quay, máy lái tự động. Tham khảo nội dung bài giảng để hiểu rõ hơn về các nội dung trên. Hi vọng tài liệu sẽ cung cấp kiến thức cho các bạn.

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User’s CMZ700B

IM80B10M-10E

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1.4 Command Code List ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1-5 1.5 Advice for Specific Situations ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1-6 1.6 Definition of Terms ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 1-7

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4 OPERATION ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-1

4.1 Startup and Stoppage ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-1 4.1.1 Startup ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-1 4.1.2 Startup Indications ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-2 4.1.3 Stoppage ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-2 4.2 Functions and Operations of Switch Unit and M.Operation Unit Components ・・・・・・・・・・・・・・ 4-3

4.4 Data Input Procedure ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-5

4.6 Display Functions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-7 4.6.1 Displaying Compass Heading (normal mode) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-7 4.6.2 Displaying Gyro-sphere Running Time ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-7

4.6.4 Displaying Backup Battery Voltage ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-8 4.6.5 Displaying Software Version Number ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-8

4.7.1 Speed -error Correction ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-9 4.7.2 Automatic Master Compass Alignment ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-10 4.7.3 Manual Master Compass Alignment ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-11 4.7.4 Startup Timer Setting ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-12 4.8 Procedures for Operating Repeater Compass ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-13 4.8.1 Basic Operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-13 4.8.2 Connection Box ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 4-13

5 MAINTENANCE AND INSPECTION ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 5-1

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6.3.1 Permission for Maintenance Function ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-19 6.3.2 Outputting Simulated DAC Signals ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-20 6.3.3 Manual drive of Master Compass (One-way turning) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-21 6.3.4 Manual drive of Repeater Compass (One-way turning) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-21 6.3.5 Resetting Gyro-sphere Runtime ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-22 6.3.6 Initializing Backup Memory ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-22 6.3.7 Correcting Installation Error ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-23 6.3.8 Setting Master Compass Follow-up Gain ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-24 6.3.9 Displaying Error Log ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-25

6.4.1 Permission for Generation Function ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-26 6.4.2 Setting of Follow-up Speed for the Stepper Signal ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-27 6.4.3 Setting Dip Switches ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-28 6.4.4 NMEA Output Communication Period ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-31 6.4.5 NMEA Output Header ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-31 6.4.6 Serial Input/Output Signal ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6-32

7 OPERATION OF THE C.OOERATION UNIT ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-1

7.1 Functions and Operations of The C.Operation Unit ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-1

7.2 Display of Normal Mode ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-2 7.3 Display That Appears When an Alarm is Generated ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-3 7.3.1 List of Error Codes・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-4

7.6.1 Displaying Heading ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-8 7.6.2 Displaying Heading Deviation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-9 7.6.3 Displaying Rate Of Turn ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-9 7.6.4 Displaying Running Time ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-10 7.6.5 Displaying Dimmer Rank・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-10 7.6.6 Displaying Gyro-sphere Phase Current ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-11 7.6.7 Displaying Backup Battery Voltage・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-11 7.6.8 Displaying Deviation Voltage・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-11 7.6.9 Displaying Software Version Number・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-11

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7.7 Setting Functions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-13

7.7.1 External Heading Input Selection ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-13 7.7.2 Setting the Ship’s Speed(speed-error correction) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-14 7.7.3 Setting the Ship’s Position(speed-error correction) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-14 7.7.4 Automatic Master Compass Alignment・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-15 7.7.5 Manual Master Compass Alignment・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-15 7.7.6 Displaying/Resetting Master Compass Alarm Causes ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-16 7.7.7 Displaying/Resetting C.Operation Unit Alarm Causes ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-17 7.7.8 Setting Deviation Alarm・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-17 7.7.9 Setting Start up Timer・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-18

7.8.1 Permission for Maintenance Function ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-21 7.8.2 Simulated DAC Output ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-22 7.8.3 One-way Turning of the Master Compass ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-23 7.8.4 One-way Turning of the Repeater Compass・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-23 7.8.5 Resetting Gyro-sphere Running Time ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-24 7.8.6 Initialization of Backup Memory・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-24 7.8.7 Correction of the Master Compass Installation Error ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-25 7.8.8 Setting the Master Compass Follow-up Gain・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-26 7.8.9 Error Log Display ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-26

7.9.1 Permission for Generation Function・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-31 7.9.2 Setting the Follow-up Speed for Stepper Signal ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-32 7.9.3 Setting Communication Protocol for Serial Output Ports・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-32 7.9.4 Setting Communication Formats for Serial Output Ports ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-33 7.9.5 Setting Communication Protocol for Serial Input Ports ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-37 7.9.6 Setting Communication Formats for Serial Input Ports・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 7-37

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・ All rights reserved No part of the contents of this manual may be transcribed or reproduced in any form without Yokogawa Denshikiki's written permission

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Important Cautions The following safety symbols are used on the product and in this manual

DANGER This symbol indicates that a failure to observe the given instructions may

result in a fatal hazard critical to the handling personnel

WARNING This symbol indicates that a failure to observe the instructions may result in death

CAUTION This symbol indicates that a failure to observe the instructions may result in personal

Risk of Electric Shock

・ Turn off the power before carrying out any wiring

CAUTION

Do not perform an insulation resistance test using a me ohmmeter except on the ship's power terminals Performing such a test may cause a failure in the gyro system

Precautions in handling the gyro-sphere

・ Hold the gyro-sphere firmly with both hands so as not to subject it to any shock

・ Do not drop the gyro-sphere Dropping the gyro-sphere may result in damage

to the internal mechanism or lead to personal injury

・ Do not disassemble the gyro-sphere

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1 SUMMARY

This chapter briefly describes operating procedures that are reg arded as essential to the operation of the CMZ700B Gyrocompass

For details, see Chapter 2 and subsequent chapters Use Chapter 1 as a simplified manual

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1.1 Components and Functions of

Switch Unit and M.Operation Unit

heading In select the C operation., this function

Is not permitted See section 7)

of brightness of all displays on the operation unit If both keys are simultaneously pressed, a lamp test is performed

In modes other than normal, these keys are used to set data

the command selection mode, and if pressed in a mode other than normal, the mode returns to normal

If pressed when an alarm is generated, the alarm buzzer and blinking of the FAIL indicator lamp stops

command

Displays "C.S." during standby

gyro heading and lights up when the output heading is the external sensor heading

If the "BZ STOP" key is pressed, it lights up during an alarm and goes out when the alarm is restored to normal

ENT

GYRO HEADING

YOKOGAWA Yokogawa Denshikiki Co.,Ltd.

SHIFT UP COMMAND

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1.2 Handling Precautions

1.2.1 Startup of Gyrocompass

(1) Startup the gyrocompass at least 5 hours before the ship's departure

(2) After startup, do not touch the internal unit of the master compass Otherwise the equipment may be damaged or an error generated

1.2.2 Handling in Cold Districts

Since the master compass container containing the gyro-sphere is filled with supporting liquid, if a gyrocompass is to be stopped in a cold district where the ambient temperature is −3°C or less it should therefore be handled as shown below

(1) In the case where it is stopped for a period of a few days or less:

Wrap the master compass in a blanket or the like to provide heat insulation

(2) In the case of a prolonged stopping period (a week or more):

Drain the liquid completely

1.2.3 External Heading Out Put

External heading can use with the master compass′amplifier unit

Turn on the main power of the master compass (MKM022) in case of using external heading CAUTION

Polishing the slip ring is prohibited

• Carry out cleaning by wiping dirt off the slip ring with ethyl alcohol or ligroin

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1.3 Startup and Stoppage

(1) Procedure for Gyrocompass System Startup

(2) Procedure for Gyrocompass System Stoppage

Turn off the master compass main

Revolution of the gyro rotor is high

→Phase current is higher than 0.35A

(See Section 4.1 of this manual.)

Revolution of the gyro rotor is low

→Phase current is 0.35A or less(See Section 4.1 of this manual.)

・RUN indicator lamp is it

・Data display "C.S."

・The follow-up operation of the master compass stops

・Aligning operation is prohibited

・Phase current decreases blow 0.35A and when its rate-of-change becomes low, the compass enters nomal operating status

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1.4 Command Code List

Call-up codes for various data displays/settings in the CMZ700 gyrocompass system are assigned to the predetermined numbers (command codes)

This section describes the command codes and their functions and whether they can be executed or not during stand-by period

Code

Execution during standby

Display Function

compass alarm

5-3

Setting Function

installation error

6-23

Maintenance Function

Generation

signal

6-27

"○"means that execution is permitted during stand-b y

"×" means that execution is not permitted during stand-by

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1.5 Advice for Specific Situations

(1) If it is suspected that there is an error in a heading shown by a repeater compass or an autopilot:

① Check the settings for the ship's speed and latitude for correcting speed-error using command codes 21 and 22 If they are not correct, correct the values

(See 4.7.1 of this manual.)

② Set the ship's speed to zero and check that indications on the master compass and repeater compass are the same If they are not, align the indications of the repeater compass and master compass

(See 4.7.2 of this manual.)

(2) If an abnormal sounds can be heard from the master compass:

① Continue to operate the gyro system if there are no errors in indications of the master and repeater compasses

② When there are errors in indications of the master and repeater compasses, use the external sensor selector switch to set the operation of the system so that the heading sensor is selected to "external heading."

(See 4.2 of this manual.)

* In either case, replace the gyro-sphere as soon as possible

(3) If you desire to know the gyro-sphere running time:

This can be displayed using the command code 13 However, a correct value cannot be obtained unless the running time was reset when the gyro-sphere was replaced

(See 4.6.2 of this manual.)

(4) If you desire to know the phase current of the gyro-sphere:

This can be displayed using the command code 15

(See 4.6.3 of this manual.)

(5) If you desire to implement automatic re-startup using the timer:

The timer can be set using the command code 29

(See 4.7.4 of this manual.)

(6) If you desire to reset the gyro-sphere running time:

This can be reset using the command code 34

(See 4.6.2 of this manual.)

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1.6 Definition of Terms

This section describes the definition of terms used in this manual

error correction from the compass heading

latitude

External heading sensor

The heading sensor other than an active gyrocompass

An other gyrocompass, magnet compass or GPS compass etc

as magnet compass/GPS compass and the like)

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2 OVERVIEW

2.1 General

The CMZ700 Gyrocompass fully conforms to the technical requirements of the IMO resolution A.424 (XI), gyrocompass performance standards, as well as to JIS F9602, Class A standards The anti-vibration structure has been strengthened and improvement of the follow-up performance has been achieved, leading to increased rigidity of the gyrocompass in all types of ships, from small to large

(1) High Accuracy

High accuracy is achieved because of the following configuration: The gyro-sphere, the center of the gyrocompass, is protected into the container filled with liquid, through the center pin that was supported as the influence of disturbance is decreased In addition, two gyro-rotors rotate at a high speed and work with each other to cancel out errors due to the rolling, pitching and yawing of a ship (2) Ingenious damping mechanism for vibration and shock

The gyrocompass is designed to disperse forces due to vibration and shock by the inclusion of liquid in the container to support the gyro-sphere In addition, the container is protected from vibration and shock with a diaphragm rubber damper and bellows damper The diaphragm rubber dumper has universal joints as a countermeasure against the affect of attitude change due to rolling, pitching and yawing This configuration produces excellent resistance against vibration and shock

(3) Improvement of Follow-up Performance

A follow-up speed of 30°/s has been realized by reducing the size and weight of the container This has made smooth follow-up without delay possible in response to sudden turning as is characteristic with small ships

(4) Digitalization of Master Compass Heading

The display of the master compass heading has been changed to digital This increases the ease of reading a heading

(5) Digitalization of Repeater Compass Signal

Electromagnetic wave noise is suppressed to a minimum by expressing the repeater compass signal in

a digital form and having the driving circuit for the compass motor on the repeater compass side (6) Automatic Speed-error Correcting Function

Speed-error is corrected automatically by entering the ship's speed signal and latitude signal respectively from the log and GPS or the like The amount of latitude change in the case where there is no latitude signal input is estimated from a calculation of the ship's speed and heading In a basic system, this function is implemented in C.operation unit

(7) Functions for Various Displays and Settings

Various types of gyrocompass information can be displayed and set on M operation unit and C.Operation unit

(8) Preparation of Outputs Corresponding to Every Requirement

In addition to the digital heading signal output for the repeater compass, the stepper heading signal output, digital signal output (IEC61162-1), analog heading, quadrant, and analog rate of turn signal output are equipped as standard

(9) Onboard Battery Drive

Compass running by the onboard battery is available as standard

(10) Remote Operation

C.operation unit is optionally provided so that the gyrocompass system can be remotely operated

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(11) Built-in Startup Timer

The restart time of the timer can be set from 1 to 99 hours

(12) Heading Output Using External Azimuth Sensor Signal

Using the heading signal from the external heading sensor (GPS compass, magnet compass, etc.) signals can be output to external connecting device such as repeater compasses or a radar

2.2 Performance and Specifications

2.2.1 Power Supply

Power consumption (24 V DC)

Power consumption (100 V AC)

Alarm Power supply (24 V DC)

Approx 0.1 A (annunciator unit, optional)

2.2.2 Input Signal

(1) Ship's speed signal for speed-error correction: 1 circuit (optional)

Device to be connected: Electromagnetic log, Doppler log, and the like (2) Latitude signal for speed-error correction: 1 circuit (optional)

Device to be connected: GPS or the like (3) Heading signal for backup: 1 circuit

Device to be connected: GPS compass, magnet compass, and the like (4) Alarm buzzer stop signal: 1 circuit, contact

In the basic system, the C.operation unit is necessary for inputting the signals of (1) and (2)

Format generation is possible with serial signals (1), (2), and (3)

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2.2.3 Output Signal

9 circuits via optional distribution unit

(3) Serial heading/rate-of-turn signal: 3 circuits, individual format generation possible

(4) Analog heading and quadrant signals: 1 circuit each

(5) Analog rate-of-turn signal: 3 circuits, individual range setting possible

Signal form: "Open" or "closed" when no voltage is applied

Signal form: "Open" or "closed" when gyro fails

Signal form: "Open" or "closed" when gyro is selected

2.2.4 Settling Time and Accuracy

hours from start.)

2.2.5 Environmental Specifications (normal operating conditions)

(1) Allowable roll and pitch: 40° for both rolling and pitching

0.35 mm p-p or less for 8 to 25 Hz 0.1 mm p-p or less for 25 to 50 Hz

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2.2.6 External Input/Output Signal Specifications and Circuits

Serial signal input

RDAM RDBM

・ Number of connectable circuits: 1 or 3 (C.operation unit used)

・ Data contents: Heading, ship's speed (optional) and latitude (optional)

・ Receiving circuit: Photo-coupler

・ Transmission format: Asynchronous serial data signal

・ Transmission rate: To be selected from 2400/4800/9600 bps

・ Data format: See Subsection 6.4.6 Data generation is possible from C.operation unit

Ship's speed pulse input (optional)

・ Number of connectable circuits: 1

・ Pulse rate: 200 pulses/n mile

・ Signal format: Open collector (photo-coupler) or volt-free contact

・ Applied voltage: 5 V DC

・ Current value: 2 mA (in ON state)

・ Saturation voltage: 0.4 V DC or less (for transistor contact)

5V

2.2KΩ

47KΩ 0.01μF

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Repeater compass heading output

SD1AR SD1BR SD2AR SD2BR SD3AR SD3BR

SG

・ Number of connectable circuits: 3

・ Transmission system: RS422 (use a driver circuit equivalent

・ Data format: IEC61162-1 and YDK original format

LTC485 RO RE DE DI

Vcc

A B

GND

Vcc

P N SHIIEL SD1A

SD1B

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Signal Name Abbreviation Circuit/signal Specifications Stepper heading

input

REF SS3 SS2 SS1 COM

Signal format

・ Number of connectable circuits: 1 or 9 (optional)

・ COM: 0 V (circuit GND)

・ REF output voltage: 24 V DC, 35 V DC (optional)

・ REF output current: 0.3 A max., 1 A max (optional)

・ Output form: Open collector output (24 V DC 3-bit gray code)

・ Source current: each 0.15 A max

REF SS1 SS2 SS3

Receiver Master

compass

SS1 SS2 SS3

Rec

Master compass

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Serial signal output

SD1A SD1B SD2A SD2B SD3A SD3B

SG

・ Number of connectable circuits: 3

・ Transmission system: RS422 (use a driver circuit equivalent

to RS422A or RS485)

・ Transmission format: Asynchronous serial data signal

・ Transmission rate: To be selected from 2400/4800/9600 bps

・ Transmission period: See Subsection 6.4.4

・ Data format: See Subsection 6.4.6

LTC485 RO RE DE DI

Vcc

A B

GND

Vcc

P N SHIIEL SD1A

SD1B

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Signal Name Abbreviation Circuit/signal Specifications Analog heading

quadrant signal

HDG QUD COM

・ Output impedance: 2 kΩ max

・ Recommended input impedance of connected device: 500 kΩ min

・ Output accuracy: ±1% (at 25°C)

0゚ 90゚ 180゚ 270゚ 360゚

Heading signal

Quadrant signal

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Analog

rate-of-turn

output

ROT1 ROT2 ROT3 COM

・ Output impedance: 2 kΩ max

・ Recommended input impedance of connected device: 500 kΩ min

・ Output accuracy: ±1% (at 25°C)

Output Level

5.000 4.844 2.500

0.158 0V

- 30゚/min -100 -300

0゚/min 30゚/min

100 300

Rate of turn

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Signal Name Abbreviation Circuit/signal Specifications Buzzer stop

contact input

BSP BSN

・ Contact closed: At buzzer stop

・ Connecting switch (contact) rating: 24 V DC, 0.05 A min Heading

selection contact output

GM GMC

・ Jumper-1 and -2 short-circuited: Contact ON when gyro selected (STD)

・ Jumper-2 and -3 short-circuited: Contact OFF when gyro selected

Gyro failure alarm contact output

GF GFC

・ Jumper-1 and -2 short-circuited: Contact OFF when gyro fails (STD)

・ Jumper-2 and -3 short-circuited: Contact ON when gyro fails

No voltage alarm contact output

NV NVC

・ Jumper-1 and -2 short-circuited: Contact OFF when there

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3 HARDWARE

3.1 System Configuration

Power Supply (24VDC)

Power Supply(100 to 220VAC , 50/60Hz)

MASTER COMPASS(MKM022)

CMZ700B

Stand-alone type

24VDCPowerSupply

(OPTION)

AC ADAPTER(MKR027)

INS

・  etc

INMARSAT RADAR GPS

・  etc

Serial Signal forREPEATER COMPASS

Analog(0∼5V)

STEPPER SIGNALSerial Signal (IEC1162-1)

Course Recorder(KR100A/180A)

RATE OF TURN(MKR302/303)

Steering RepeaterCompass (MKR051)

Bearing Repeater

Compass (MKR050)

( Device to be connected )

ConnectionBox (MKN015)

Horizontal

Stand

(KX223A)

HorizontalBracket(KX201A)

TiltingBracket(KX213)

MMI(OPTION)

C.OPERATION UNIT

(OPTION)ANNUNCIATOR(MKR028)

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3.2 Component Models

Master compass Stand-alone type Gyro sphere MKM022-1 KT005 Gyrocompass

CMZ700B Pilot stand type MKM022-2

Console type MKM022-3

Repeater compass Gland type Horizontal stand MKR050-G KX223A

Connection box Horizontal bracket MKN015-G KX201A

Tilting bracket KX213

Plug type Horizontal stand MKR050-P KX223A

Connection box Horizontal bracket MKN015-P KX201A

Tilting bracket KX213

Steering Repeater Compass MKR051

AC Adapter MKR027 Annunciator unit MKR028

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3.3 Component Names and Functions

(1) Master Compass ( MKM022 )

The components of the master compass and their functions are summarized below

( For details of exchange parts, refer to Appendix-2 Components List )

5 M operation unit The components of the control panel and their functions are summarized below

9 Follow-up mechanism Provides a follow-up function by means of a stepping motor and gear

mechanism

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(3) Connection Box ( MKN015-P or -G )

The components of the connection box and their functions are summarized below

3 LED lamp ( green ) This LED blinks when zero adjustment is being carried out Normally it is lit

4 LED lamp ( red ) This LED is lit or blinks when an error is detected Normally it is off

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(4) Horizontal Stand ( KX223A )

The components of the horizontal stand and their functions are summarized below

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(5) Horizontal Bracket ( KX201A )

The components of the horizontal bracket and their functions are summarized below

horizontal )

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(6) Tilting Bracket ( KX213 )

The components of the tilting bracket and their functions are summarized below

Trang 34

(7) Steering Repeater Compass ( MKR051)

The components of the steering repeater compass and their functions are summarized below

4 Fail lamp(red) This LED is lit or blinks when an error is detected Normally it is off

5 Run lamp(green) This LED blinks when zero adjustment is being carried out Normally it is lit

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(8) AC Adapter ( MKR027)

The components of the ac adapter compass and their functions are summarized below

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(9) Annunciator ( MKR028)

The components of the annunciator and their functions are summarized below

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4 OPERATION

4.1 Startup and Stoppage

4.1.1 Startup

Start up the gyrocompass at least 5 hours before performing normal operation

After the power switch is turned on, the gyrocompass system is started up at either hot start or cold start depending on the condition of the gyro-sphere

If the gyro rotor is rotating at a high enough speed to detect the heading, hot start begins, however, if

it is rotating at a speed that is too low to detect the heading, cold start begins

The rotating status of the gyro rotor is determined by monitoring the phase current

Phase curent

0.35A

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4.1.2 Startup Indications

The section describes the indications on the M operation unit at startup

If the system is activated by a cold start (stand-by state), the display shown in item (1) below appears

When the rotating speed of the gyro-rotor is fast enough, the system enters normal mode and the display changes to the item (2)

In case of hot start, the display shown in item (2) below appears immediately

(1) Example of indications during stand-by

The gyro heading display indicates the compass heading when the power was last turned off, and the data display indicates "C.S."

(2) Example of indications when released from stand-by and for hot start

The gyro heading display indicates the current compass heading and the data display indication disappears

4.1.3 Stoppage

When the power switch is turned off, all power is cut

RUN EXT FAIL EXT

SHIFT

UP COMMAND

BZ STOP

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4.2 Functions and Operations of Switch Unit and M.Operation Unit Components

This subsection describes the functions and operations of switch unit and M.operation unit components If key ② or ⑤ is to be operated, keep the key pressed for at least two seconds

② External heading sensor

selector switch

If the switch is kept pressed for 2 seconds or more when in normal mode, the output heading (gyro heading/external heading) is selected

all displays on the M.operation unit The displays can be darkened by pressing the ▼ key and brightened by pressing the ▲ key Brightness can be adjusted in 32 steps

If two keys are simultaneously pressed, a lamp test is performed

mode, data is input Pressing the SHIFT key changes the input digit (blinks) while pressing the UP key changes the numeric value in the input digit

④ Command/

buzzer stop key

If this key is pressed in normal mode, the mode changes to the command selection mode, and if pressed in command selection mode or command execution mode, the mode returns to normal

If pressed when an alarm is generated, the alarm buzzer and blinking of the FAIL indicator lamp stops

mode To carry out operations with this key switch, keep it pressed for 2 seconds

⑨ RUN indicator lamp Lights up when the power switch is turned "on."

and lights up when the output heading is the external sensor heading

If the "BZ STOP" key is pressed, it lights up during an alarm and goes out when the alarm is restored to normal

ON

OFF POWER GYROCOMPASS

SHIFT

UP COMMAND

BZ STOP

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