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PT900 is an adaptable autopilot that optimizes gain and minimizes unnecessary steering action. It fully conforms to IMO Resolution A.342(IX), A.694(17), 64(67) Annex 3 & 191(79), ISO 11674, IEC 60945, IEC 61162-1/-2 and IEC 62288, and improves economical efficiency, safety, usability and extensibility. A Batch Noise Adaptive Autopilot Controller automatically updates the optimal rudder angle by calculating surrounding disturbance, achieving course keeping equal to model PT500A with 60 % less steer. A seven-inch colour display and touch panel provide high visibility, user-friendly layout and constant main-data display. Flexible CAN-BUS networking lets functionally separated units scale easily, while optional Track Control and E-Course Pilot modes enhance fuel saving and planned-route keeping.
| Parameter | Specification |
| Main Power Supply | AC 100V / 110V / 115V / 220V $\pm 10\%$, 1-phase, 50/60 Hz |
| Backup / Emergency Power | DC 24V (+30%, -10%) (Automatic seamless failover on AC drop) |
| Power Consumption | Approx. 100 VA to 250 VA (dependent on steering drive configuration) |
| Enclosure Protection | IP22 (Main Steering Console / IBS Modules) |
| Interface | Signal Type / Protocol |
| Gyrocompass Inputs | Dual Heading Inputs: Digital Serial (CMZ-900, CMZ-700), Synchro, or Step |
| Magnetic / GNSS Heading | NMEA 0183 ($HEHDT, $HCHDT, $THS) via IEC 61162-1 (RS-422) |
| Speed Log Inputs | NMEA 0183 ($VHW, $VTG, $VBW) or 200 pulses/NM Speed Log |
| ECDIS / Route Tracking | NMEA 0183 ($APB, $XTE, $BWC) via IEC 61162-1 / 61162-2 for TCS Category B |
| Rudder Feedback Unit | High-precision Dual Potentiometer / Synchro Unit at steering gear |
| Feature | Performance & Specifications |
| Steering Control Modes | AUTO (Automatic Heading), TRACK (ECDIS Route Steering), HAND (FU Wheel), NFU (Non-Follow Up Tiller) |
| Control Algorithms |
• Advanced Adaptive Control (Real-time load, trim, draft, and sea-state adaptation) • ECONOMY Mode (Minimizes rudder drag for maximum fuel efficiency) • PRECISION Mode (Tight track-holding accuracy for narrow channels) |
| Heading Accuracy | Holds heading within $\pm 0.5^\circ$ (in calm-to-moderate seas) |
| User Interface | High-resolution color LCD touch display with physical rotary controls and dedicated function keys |
| Alarm & Monitoring | Off-course alarm, Heading discrepancy, Steering gear failure, System self-diagnostics |
| Model Variant | Description & Steering Interface |
| PT-900A | Advanced Adaptive Control model with solid-state relay/proportional valve control outputs. |
| PT-900D | Standard Digital PID control model for conventional steering systems. |
| PT-900S | Panel-mount modular units engineered for direct integration into Integrated Bridge System (IBS) consoles. |
IMO Standards: IMO Res. A.342(IX), MSC.64(67) Annex 3, ISO 11674, IEC 62065 (TCS Category B), IEC 60945
Type Approvals: ClassNK, MED (Wheelmark), JG (Japan Government), ABS, DNV, LR
Country of Origin: Japan
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