12.2.3
Features
• Up to three helm stations • Automatic battery management with sensing, warnings & best battery selection • On demand hydraulic steering pump minimizing power consumption • No oil at the helm • Rugged electronics for 12 or 24 VDC applications • Color dash display showing rudder command and rudder position graphic • Displays system health • Display provides system setup interface • Communicates faults and any special handling instructions to the operator • No requirement for tie-bars depending on rudder loads • Simple software updating via USB port • Programmable number of turns lock to lock with speed • Auto-adjusting steering end stops and resistance with speed
• Dual redundant position sensing on all moving components • Helm offers both 3/4” taper or 1” straight shaft options • Utilizes fault tolerant CAN network • Full autopilot CANbus connectivity and integration. No additional pumps or sensors required • Adjustable max rudder hard over angle with speed range 25° to 40° Center to hard over • Rudder toe in or out up to 5° with speed • Position proportional rudder gain for faster steering response near neutral rudder position • RPM input: NMEA 2000, J1939 or analog pulse compatible • Pump features an integrated service/bypass valve allows a limp home mode • Meets or exceeds ABYC, CE, ISO and SAE electrical and environmental requirements
12.2.4
Mounting configurations and system schematic While using the table below be sure that your steering cylinder is at mid-stroke as shown in the figure right to ensure the cylinder operates correctly.
ATTACHMENT TO TILLER ARM, RECOMMENDED PER ABYC
27.75"
.75" SHAFT DIA.
4"
MAX 5°
TILLER ARM
A
B
STEERING ANGLE
1.56"
Figure 12-6. Cylinder at mid-stroke.
MODEL EC5390 (9” STROKE) STEERING ANGLES
50°
60°
70°
70°
A
B
A
B
A
B
A
B
10.64”
7.65”
9.00”
5.79”
7.84”
4.247”
7.00”
3.36”
37,782 in-lbs * 20,996 in-lbs * Table 12-2. * Torque shown is per cylinder. Twin rudder example: two cylinders at 60° steering angle will give a combined total of 61,030 in-lbs of torque. 30,515 in-lbs * 25,161 in-lbs *
12-6
EN
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