Yokogawa Gyro Compass Cmz 900 Manual High Quality -

Yokogawa CMZ 900

The series gyro compass is a modular, high-reliability navigation system designed for everything from small vessels to large merchant ships. Key Specifications & Features

Static Accuracy

According to the Yokogawa CMZ 900 General Specifications, the system delivers high-precision heading data with the following parameters: Specification ±0.25° x sec Lat. Dynamic Accuracy ±0.75° x sec Lat. Settling Time Within 5 hours (Usable accuracy in ~2 hours) Follow-up Speed Up to 30°/sec Power Supply 24 VDC (Main) and/or 100-220 VAC (via Adapter) Operating Temp -10°C to +50°C (Master Compass) Operating Principles & Manual Highlights Yokogawa Gyro Compass Cmz 900 Manual

CMZ 900B (Basic):

A space-saving, modular design where repeater compasses are driven directly from the master unit without a separate control box. Yokogawa CMZ 900 The series gyro compass is

9.3 Synchro output (Scott‑T transformer)

Gyro Alarm

| Alarm / Symptom | Possible Cause | Corrective Action | |----------------|----------------|---------------------| | (steady buzzer) | Gyro RPM low, motor failure, bearing seizure | Wait? If >30 min, power cycle. Check fuse in PSU. | | Follow‑up Alarm | Photocell dirty, servo motor stalled | Clean optics inside master unit. Check servo fuse. | | Latitude Alarm | Latitude set incorrectly, or ship >70° lat | Verify latitude dial. Reduce speed/delay readings. | | Heading drifts >1°/min | Gyro sphere not settled, temperature gradient | Let run 1 more hour. Check heater in master case. | | No output to repeaters | Step driver IC failure or loose connector | Swap spare repeater channel. Check termination. | | Repeater 180° reversed | Synchro wiring swapped (S1/S2) | Swap S1 and S2 leads at repeater. | Settling Time Within 5 hours (Usable accuracy in

Why the CMZ 900 is a Legend in Maritime History

Yokogawa Marine Archive

Yokogawa has largely discontinued direct support for the CMZ 900 series, deferring to third-party marine service centers. However, you can still search the via their global support portal. Use part numbers: IM CMZ900-E (Instruction Manual) or OMS CMZ900 (Operation Manual).

Power Fail