Yokogawa Gyro Compass Cmz 700 User Manual

Yokogawa Gyro Compass CMZ-700 User Manual: A Comprehensive Guide

The Yokogawa Gyro Compass CMZ-700 is a highly advanced and reliable navigation instrument designed for use on ships, vessels, and other marine craft. As a precision gyro compass, it provides accurate directional information, essential for safe and efficient navigation. This user manual aims to provide a detailed understanding of the CMZ-700's operation, installation, and maintenance, ensuring that users can maximize its capabilities and performance.

Introduction

The CMZ-700 is a state-of-the-art gyro compass that utilizes advanced technology to provide precise directional data. Its high-accuracy sensor and sophisticated algorithm enable the compass to maintain a stable and reliable output, even in challenging environmental conditions. The CMZ-700 is designed to meet the stringent requirements of the International Maritime Organization (IMO) and the International Convention for the Safety of Life at Sea (SOLAS).

System Components

The CMZ-700 consists of the following components:

1. Gyro Compass Unit: This is the primary sensor unit that contains the gyro rotor, pick-offs, and torquer. It is responsible for detecting the directional changes and providing the primary output.
2. Control Unit: This unit processes the data from the gyro compass unit and provides the final output. It also contains the user interface, alarm and alert systems, and communication ports.
3. Power Supply Unit: This unit provides the necessary power to the gyro compass unit and control unit.
4. Distribution Unit: This unit distributes the power and signals to the various components of the system.

Installation and Setup

Before installing the CMZ-700, ensure that the vessel's magnetic compass is properly compensated and that the vessel's steel structure does not interfere with the gyro compass's operation.

1. Mounting the Gyro Compass Unit: The gyro compass unit should be mounted on a stable and level surface, away from sources of vibration and magnetic interference.
2. Connecting the Power Supply: Connect the power supply unit to the gyro compass unit and control unit, ensuring that the voltage and frequency match the vessel's electrical system.
3. Initial Setup: Configure the CMZ-700 according to the vessel's specifications, including the latitude, vessel speed, and communication settings.

Operation

The CMZ-700 provides a range of functions and features to support navigation:

1. Directional Output: The CMZ-700 provides a precise directional output, which can be used for navigation, steering, and other applications.
2. Alarm and Alert Systems: The CMZ-700 features alarm and alert systems to notify the user of any issues or faults, ensuring prompt action can be taken to maintain safe navigation.
3. Data Communication: The CMZ-700 supports various communication protocols, allowing it to interface with other navigation systems, such as GPS, ECDIS, and autopilots.

Maintenance and Troubleshooting

Regular maintenance is essential to ensure the CMZ-700 operates accurately and reliably:

1. Gyro Compass Unit Maintenance: Perform routine checks on the gyro compass unit, including cleaning and inspecting the pick-offs and torquer.
2. Control Unit Maintenance: Check the control unit's software and firmware versions, and update as necessary.
3. Troubleshooting: Consult the troubleshooting guide in this manual to resolve common issues and faults.

Technical Specifications

The CMZ-700 has the following technical specifications:

• Accuracy: ±0.5° (gyro compass), ±1.0° (directional output)
• Response Time: < 1 second (gyro compass), < 2 seconds (directional output)
• Power Consumption: 30 W (gyro compass unit), 20 W (control unit)
• Operating Temperature: -20°C to +50°C
• Storage Temperature: -40°C to +70°C

Conclusion

The Yokogawa Gyro Compass CMZ-700 is a highly advanced and reliable navigation instrument, designed to provide accurate directional information for safe and efficient navigation. By following the guidelines outlined in this user manual, users can ensure optimal performance, safe operation, and effective maintenance of the CMZ-700. Regular checks and maintenance will ensure the CMZ-700 continues to provide precise directional data, supporting safe and efficient navigation. yokogawa gyro compass cmz 700 user manual

Appendices

• Appendix A: CMZ-700 Menu Structure
• Appendix B: CMZ-700 Communication Protocols
• Appendix C: CMZ-700 Troubleshooting Guide
• Appendix D: CMZ-700 Technical Drawings

Revision History

• Revision 1.0: Initial release (February 2023)
• Revision 1.1: Updated technical specifications (April 2023)

You can find the full user and service manuals for the Yokogawa CMZ 700 series gyrocompass (including the

models) through several online documentation platforms. These manuals cover everything from technical specifications and installation to maintenance and operation codes. Available Manuals and Documentation

Comprehensive User Manual (PDF): A primary 84-page manual for the CMZ700 Series is available on Scribd. It includes block diagrams, system configurations, and essential navigation heading information

Specific Guide: Detailed instructions for the Single (S) model, including installation and hot/cold start procedures, can be found at ManualsLib.

CMZ700D Dual Gyrocompass Manual: The "IM 80B10M-12E" 9th Edition manual for the dual system is a more extensive 202-page document available on Scribd. Service & Maintenance Manuals:

Maintenance Mode Guide: Lists specific codes (30-39) for simulated signals and resetting gyrosphere runtime.

Gyro Sphere Service: Instructions for overhauling and cleaning the mercury-filled gyrosphere are available via Scribd's overhaul guide. Key Sections of the Manual

These documents typically include the following chapters to ensure safe and accurate operation:

Operation: Startup/stoppage, dimmer control, and manual alignment.

Command Codes: Call-up codes for external heading input, speed/latitude settings for error correction, and software version display.

Maintenance: Daily/regular inspection checklists, error code lists, and backup memory initialization.

Safety: Precautions for handling mercury and high-voltage terminals during installation. CMZ700 Series Gyrocompass Manual | PDF - Scribd

Finding the full user manual for the Yokogawa CMZ 700 gyrocompass can be tricky because it's often split into specific guides for operation, maintenance, and setup. Yokogawa Gyro Compass CMZ-700 User Manual: A Comprehensive

While a direct download from the official manufacturer's site is restricted, you can find high-quality copies and specialized guides on document-sharing platforms: 📖 Available Manuals & Guides Complete Series Manual:

Covers the basic (CMZ700B), single (CMZ700S), and dual (CMZ700D) models. It includes system configurations, block diagrams, and general operations. Operating & Command Functions:

A specific guide for the 44 command codes used to control displays, alarms, and alignment settings. Maintenance Mode Guide:

Detailed instructions for password-protected tasks like resetting gyrosphere runtime and correcting installation errors. Service & Overhaul:

Step-by-step procedures for cleaning the gyro sphere, handling mercury safely, and general system overhauls. 🛠️ Key Technical Specs for Reference Settling Time: Reaches an operational state in about , with full accuracy within Power Supply: , with options for AC (100V–230V) and battery backup. Environmental Limits: Operates between -10°C to +55°C and handles roll/pitch up to Связь и Радионавигация ⚠️ Common Error Codes

Feature: High-Accuracy Navigation with Yokogawa Gyro Compass CMZ-700

The Yokogawa Gyro Compass CMZ-700 is a state-of-the-art navigation instrument designed to provide accurate and reliable directional information for various marine and industrial applications. Here are some of its key features:

Key Features:

1. High-Accuracy Gyro Compass: The CMZ-700 uses a advanced gyro compass system that provides highly accurate directional readings, even in rough seas or extreme temperatures.
2. Digital Display: The instrument features a clear and easy-to-read digital display that shows the vessel's heading, course, and other relevant navigation data.
3. Automatic Correction: The CMZ-700 automatically corrects for errors caused by latitude, speed, and maneuvering, ensuring accurate directional readings at all times.
4. Data Output: The instrument provides various data output options, including NMEA 0183, allowing for easy integration with other navigation systems and equipment.
5. Alarm and Warning Functions: The CMZ-700 features alarm and warning functions that alert the operator to potential navigation hazards, such as deviation from course or loss of gyro signal.

Technical Specifications:

• Accuracy: ±0.5° (gyro compass), ±1.0° (transducer)
• Response Time: 1-2 minutes (gyro compass), 1-5 seconds (transducer)
• Operating Temperature: -20°C to +55°C (-4°F to +131°F)
• Power Supply: 24V DC (18-32V DC)
• Dimensions: 240mm x 180mm x 100mm (9.4in x 7.1in x 3.9in)

Benefits:

• Improved Navigation Accuracy: The CMZ-700 provides highly accurate directional readings, enabling safe and efficient navigation in various marine and industrial environments.
• Increased Safety: The instrument's alarm and warning functions help prevent navigation hazards and reduce the risk of accidents.
• Easy Integration: The CMZ-700's data output options make it easy to integrate with other navigation systems and equipment, streamlining navigation operations.

The Yokogawa Gyro Compass CMZ-700 is a reliable and accurate navigation instrument designed to meet the needs of modern marine and industrial applications. Its advanced features and technical specifications make it an ideal choice for vessels and facilities requiring precise directional information.

The Yokogawa CMZ 700 series gyrocompass provides high-performance heading information for marine navigation across three primary models: (single), and Startup and Normal Operation Startup Time : Allow at least

before ship departure for the system to fully stabilize. It typically reaches an operational state in about 2 hours.

: This is the normal operation mode where the "True Heading" and system status are displayed. Key Indicator Lamps RUN (Green) : Lights up when power is on. FAIL (Red) : Blinks when an alarm is generated. EXT (Yellow) : Indicates when an external sensor heading is being used. Essential Command Codes

To access specific data or settings, enter the following command codes on the operation unit: True Heading Display Normal operating view. Turn Rate Display Shows the vessel's rate of turn. Speed Setting Input ship's speed for manual speed-error correction. Latitude Setting Input current latitude for manual speed-error correction. Auto Alignment Triggers automatic master compass alignment. Alarm Cause Displays the specific cause of an active alarm. Restart Timer Set the system to restart automatically (1–99 hours). Daily and Regular Maintenance Daily Check : Verify the gyrosphere drive current once per day. Ambient Temperature Gyro Compass Unit : This is the primary

: If the system is stopped for more than a few days in cold climates (below -3°C), the container liquid must be drained or the unit insulated to prevent damage. Gyrosphere Replacement

: The gyro sphere typically requires an overhaul or replacement every 1 to 5 years Safety Warning : The gyro sphere contains

. Handle with extreme care, use dedicated syringes for supporting liquid, and avoid any physical shocks to the sphere. Common Alarm Codes lamp blinks, use Command Code 26 to identify the issue: : Gyro sphere failure (excessive current). : Inverter failure. : Follow-up failure (the compass cannot track the heading). : Automatic alignment failure. Code 090–095 : External heading input error (timeout or invalid data).

For detailed wiring diagrams or specific password-protected maintenance procedures (Codes 30–39), refer to the Yokogawa CMZ700B Technical Manual CMZ700 Maintenance Mode Guide installation procedures for the gyrosphere? CMZ700 Series Gyrocompass Manual | PDF - Scribd

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YOKOGAWA GYRO COMPASS CMZ 700

Where to Download the Official Yokogawa CMZ 700 User Manual PDF

As of recent updates, Yokogawa has merged its marine division with other entities, but official documentation is still available. You should avoid third-party "free manual" sites that often have missing pages or outdated schematics.

Legitimate sources for the manual include:

1. Yokogawa’s Official Portal: Navigate to the "Marine Support" section. You may need a serial number from your unit (located on the back of the master compass).
2. Kongsberg Maritime (Legacy Support): Yokogawa’s marine gyro line is sometimes supported by Kongsberg’s aftermarket services. Their support portal hosts archived PDFs.
3. OEM Distributors: If you purchased through a marine electronics distributor like Northrop Grumman Sperry Marine or local agents in Japan, Singapore, or Rotterdam, request the latest revision (Rev. 4.2 or higher).

Warning on Version Control: Ensure you download the manual that matches your hardware revision. The CMZ 700 underwent a major logic board update in 2018. Using a pre-2018 manual on a post-2018 unit will show incorrect wiring pinouts (specifically for the alarm relay contacts).

5.1 Alarm Table

| Alarm Message | Cause | Action | |---------------|-------|--------| | NO GYRO DATA | Internal sensor failure | Restart power. If persists, replace master unit. | | ALIGN TIMEOUT | Vessel moving during alignment | Stop vessel, realign via MENU → Restart alignment. | | POWER FAIL | Input voltage < 18V | Check PSU and ship’s supply. | | LATITUDE INVALID | No GPS and manual entry missing | Enter latitude manually. | | OVER TEMP | Internal > 65°C | Check ventilation, reduce ambient temperature. | | NMEA OUT ERROR | Short circuit on NMEA output | Disconnect load, check wiring. |

Chapter 1: General Specifications and System Configuration

The manual opens with technical data. It details the power consumption (typically 150 VA), operating temperature range (-15°C to +55°C), and dimensions of the master compass and repeater units. Crucially, this chapter contains the wiring diagrams for the junction box. Without this section, connecting the gyro to your ship’s power grid or external repeaters becomes a guessing game.

Section 5: Troubleshooting

The user manual provides a decision tree for common alarms:

• Alarm 1: Power Failure – Check the vessel’s main breaker and the internal fuse.
• Alarm 2: No Follow-up – Indicates seized step motor or broken belt inside the master unit.
• Alarm 5: Low Torque – Usually means the gyro wheel speed is dropping; requires immediate service.

Why the CMZ 700 Remains an Industry Standard

Before diving into the manual specifics, it is essential to understand what the CMZ 700 is and why it demands such rigorous documentation.

The Yokogawa CMZ 700 is a north-seeking gyrocompass designed for medium to large-sized vessels, including container ships, tankers, and luxury yachts. Unlike a magnetic compass, which points to magnetic north (subject to variation and deviation), the CMZ 700 utilizes the Earth’s rotation to find true north. It does this via a high-speed spinning gyroscope that maintains its axis of rotation relative to inertial space.

Key features that are heavily referenced in the user manual include:

• Rapid Settling Time: The CMZ 700 typically settles to within 0.5 degrees of true north in under three hours.
• Latitude Error Compensation: Automatic adjustments for high-latitude navigation.
• Interface Capabilities: NMEA 0183 and NMEA 2000 outputs for radar, AIS (Automatic Identification System), and autopilot systems.

Because the device interacts with critical safety systems, the user manual is not a "nice to have"—it is a regulatory requirement under SOLAS (Safety of Life at Sea) regulations.

The 4-Hour Rule vs. Dynamic Settling

The manual explicitly states a 4-hour settling time for full accuracy (0.1° steady-state). However, experienced navigators know the manual implies two distinct modes:

• Latitude Settling: The gyro seeks true north based on Earth’s rotation. The manual warns against changing the latitude setting during the first 2 hours.
• Dynamic Error: While the manual covers speed/latitude error correction tables, it rarely emphasizes that the CMZ-700 requires manual speed input. Failure to update this via the manual’s formula introduces latitude error (sin φ * V/R error).

Chapter 2: Operation Procedures (The "How-To" Guide)

This is the most frequently referenced section of the user manual.

• Starting the Gyro: The manual emphasizes a strict sequence. You must apply power, wait for the "Rotor Start" indicator, and then select "Align." Operators are warned never to turn the master compass physically, as this will damage the sensitive gimbals.
• Monitoring the Settling Process: The digital display shows latitude input and settling angle. The manual provides a chart of expected settling times versus latitude.
• Latitude Setting: A step often missed by junior officers. The manual details how to manually input latitude if GPS input fails.