Yokogawa Gyro Compass Cmz 700 User Manual Extra Quality [OFFICIAL]

The Yokogawa CMZ700 Gyro Compass series is a high-performance navigation system designed for a wide range of vessels, from small boats to large tonnage ships. It is characterized by its modular configuration, high follow-up speed, and robust anti-vibration technology. Key System Configurations

The CMZ700 series is available in three primary models tailored to different operational needs:

CMZ700B (Basic): A simplified configuration consisting of only the master compass. It can drive repeater compasses directly without an external control box.

CMZ700S (Single): A single gyro system that includes a control box to manage various inputs and outputs, suitable for most vessel types.

CMZ700D (Dual): A dual-block configuration designed for high reliability through system redundancy. Technical Specifications

Settling Time: Reaches a stable "meridian" state within 5 hours. It becomes operational in approximately 2 hours. Accuracy: Static accuracy is within , and dynamic accuracy is within

Follow-up Speed: Features a high-speed follow-up capability of up to , significantly faster than previous models. yokogawa gyro compass cmz 700 user manual

Environmental Resilience: Operates in temperatures ranging from -10∘Cnegative 10 raised to the composed with power C +55∘Cpositive 55 raised to the composed with power C . It can withstand roll and pitch angles of ±40∘plus or minus 40 raised to the composed with power

Power Supply: Primarily 24V DC for the CMZ700B. Single and Dual models support AC mains (100V–230V) with a 24V DC backup. Essential Operating Procedures CMZ700 Gyrocompass Specifications Guide | PDF - Scribd

9. SAFETY & REGULATORY

4.3 Speed Correction

If vessel speed > 10 knots, speed log input (NMEA VHW) automatically corrects heading for latitude & speed error. Without speed log, manually set average speed in MENU → Speed Input.

Appendix A: Quick Reference Card

Power ON → Wait for “READY” (15 min)
Check latitude (auto or manual)
Verify repeaters sync
Monitor alarms

The Definitive Guide to the Yokogawa Gyro Compass CMZ 700: Operation, Maintenance, and User Manual Insights

Part 6: Troubleshooting Flowchart (Based on Manual Appendix D)

When your CMZ 700 behaves oddly, use this simplified logic derived from the manual’s decision tree.

Problem: Heading drifts continuously, even at anchor.

Check: Is latitude entered correctly? → If yes, proceed.
Check: Is the gyro sphere spinning? (Listen for 6,000 rpm whine). If silent → Motor drive board failed.
Check: Is the vessel near a large steel structure (dry dock)? → Magnetic interference affects follow-up system.

Problem: Display shows "ERR 4" and buzzer sounds. The Yokogawa CMZ700 Gyro Compass series is a

Manual meaning: Mercury switch activated due to excessive roll/pitch.
Action: No action needed; alarm will auto-reset when vessel stabilizes. If error persists for >10 minutes in calm seas, the gyro sphere may be offset internally.

Problem: Repeaters show different heading than master.

Manual solution: Synchronize the step motor. Power cycle the distribution box. If issue remains, check wiring for continuity on the S1/S2/S3 signal lines.

Section 7: Installation Drawings

While intended for installers, operators use this section when relocating the control unit or adding new repeaters. It details the precise cable shielding and core connections.

Final Verdict

The Yokogawa CMZ-700 is considered a "Gold Standard" in the traditional mechanical gyro compass market. It does exactly what a gyro compass should do: provide a stable, accurate heading with minimal fuss.

While the user manual is technical and the interface is retro, the system is celebrated for its durability. If you are a Deck Officer, the most important section of the manual to memorize is the Alarm Code list and the Latitude/Speed correction procedure. If you are an ETO, the wiring diagrams and NMEA configuration pages are your best friend.

The Yokogawa CMZ 700 series gyrocompass is designed for highly accurate navigation across various vessel types, featuring a modular architecture and an advanced anti-vibration system Связь и Радионавигация Key System Features Modular Product Lineup CMZ700B (Basic)

: Drives repeaters directly from the master compass without an external control box. CMZ700S (Single) Appendix A: Quick Reference Card

: Includes a control box for expanded input and output capabilities. CMZ700D (Dual)

: Provides high reliability through a dual master compass configuration. High-Speed Follow-up : Achieves a follow-up speed of , making it suitable for high-speed turning vessels. Anti-Vibration Design

: Employs a unique system using high-viscosity oil damping to decouple shock and reduce external interference. Settling & Accuracy Settling Time : Reaches an operational state within and full meridian alignment within Static Accuracy Power Flexibility : Can be driven entirely by 24V DC ship's battery Restart Timer : Allows users to preset a delayed restart time between 1 and 99 hours Tradeindia Operational Functions (Command Codes)

The system uses approximately 44 command codes to manage various functions through the operation unit: Yokogawa CMZ 700/900 Command Functions - Compass - Scribd

🧭 User Experience: Clear, If Slightly Dense

Yokogawa’s engineers clearly wrote this for professionals, but leisure users won’t feel lost. Key highlights:

Illustrations: Excellent cross-sections of the gyro sphere and control units.
Language: Technical but consistent; no sudden leaps in complexity.
Troubleshooting section: Saves the day when alarms pop up during a sunset cruise.

Downsides? It lacks a quick-start “cheat sheet” for casual users, and the font size is small for low-light cabin reading. Entertainment-wise, don’t expect humor — but you will respect the thoroughness.