Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Summary of Contents for Jastram ENGINEERING SCA 300
- Page 1 System Manual Steering Control Amplifier Model: SCA 300 & RFU 1300 Document No.: MAN01502 Revision: A This manual is subject to change without prior notice. 135 Riverside Drive, North Vancouver, B.C., Canada, V7H 1T6 TEL: 604-988-1111 FAX: 604-986-0334 WEB: www.jastram.com...
-
Page 2: Table Of Contents
Figure 5 – Indicator Terminal Block TB1 Configuration ................13 Figure 6 – Non-Follow Up Terminal Block TB2 Configuration ..............13 Figure 7 – SCA 300 Standard Wiring Diagram (Page 1 of 5) ..............14 Figure 8 – SCA 300 Standard Wiring Diagram (Page 2 of 5) ..............15 Figure 9 –... -
Page 3: Introduction
Jastram Steering Control Amplifier Standard Components • Hydraulic Solenoid Valve • SCA Input Devices • Rudder Feedback Unit - RFU 1300 • Steering Control Amplifier - SCA 300 • SCA Output Devices Hydraulic Solenoid Valve • 4-Way Proportional Directional Solenoid Valve SCA 300 Input Devices •... -
Page 4: Figure 1 - Sca 300 Standard Cabling Diagram
Introduction Page 3 of 31 Figure 1 – SCA 300 Standard Cabling Diagram Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 5: Description Of Standard Components
Hydraulic Solenoid Valve A 4-way, proportional, directional solenoid valve, powered by DC voltage, is common to all SCA 300 systems. This valve directs the flow from the hydraulic power unit to the steering gear in order to actuate either a port or starboard turn of the rudder. - Page 6 SCA 300. If a jog lever is to be used with the SCA a non follow-up/full follow-up (NFU/FFU) switch will be required to select between these two types of operation.
-
Page 7: Figure 2 - Typical Travel Limits
Figure 2 – Typical Travel Limits (Angles may vary) SCA 300 Steering Control Amplifier The SCA 300 is designed for use with DC powered hydraulic solenoid valves. The SCA is fully capable of either full follow-up or non follow-up operation. - Page 8 Non Follow-up Speed - adjusts the hard over to hard over time of the steering gear in non follow-up mode. SCA 300 Output Devices The SCA 300 can output to rudder angle indicators (RAI) as well as rudder order indicators (ROI). The SCA contains two rudder angle indicator outputs, CRAI (constant rudder angle indication) and RAI.
-
Page 9: Figure 3 - Steering Control Amplifier Schematic (Simplified)
Introduction Page 8 of 31 Figure 3 – Steering Control Amplifier Schematic (Simplified) Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 10: Specifications
Single Rudder Angle Input: Center Voltage 4.1 VDC Voltage Swing ± 4.0 VDC (max.) at Receptacle 1, Pin 3 ± 1.0 VDC (max.) at Receptacle 1, Pin 6 Resistance 10 ± 1% kOhm Doc No.: MAN01502, 27-02-01 SCA 300 Manual... - Page 11 0.3 deg. (min.) Internal Angle Limit ± 10 to ± 45 deg. Environmental Operating Temperature 0 - 50 degree C Water Resistant Dust Proof Enclosure CAUTION: All specifications are subject to change without prior notice. Doc No.: MAN01502, 27-02-01 SCA 300 Manual...
-
Page 12: Installation
Page 11 of 31 INSTALLATION Mounting The SCA 300 should be mounted in the wheelhouse if possible. This will result in shorter cable lengths and ease in the tuning procedure. WARNING: ALTHOUGH RESISTANCE TO RADIO FREQUENCY (RF) INTERFERENCE HAS BEEN INCORPORATED INTO THE SCA 300’s... -
Page 13: Figure 4 - Sca 300 Overall Dimensions
Installation Page 12 of 31 Figure 4 – SCA 300 Overall Dimensions Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 14: Figure 5 - Indicator Terminal Block Tb1 Configuration
(NFU/FFU RELAY CONTROL) • -COMM (NEGATIVE DC POWER SUPPLY) • PORT (PORT RUDDER COMMAND) • STBD (STBD RUDDER COMMAND) NOTE: 1. TERMINAL BLOCK NOT SUPPLIED. Figure 6 – Non-Follow Up Terminal Block TB2 Configuration Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 15: Figure 7 - Sca 300 Standard Wiring Diagram
Installation Page 14 of 31 Figure 7 – SCA 300 Standard Wiring Diagram (Page 1 of 5) Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 16: Figure 8 - Sca 300 Standard Wiring Diagram
Installation Page 15 of 31 Figure 8 – SCA 300 Standard Wiring Diagram (Page 2 of 5) Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 17: Figure 9 - Sca 300 Standard Wiring Diagram
Installation Page 16 of 31 Figure 9 – SCA 300 Standard Wiring Diagram (Page 3 of 5) Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 18: Figure 10 - Sca 300 Standard Wiring Diagram
Installation Page 17 of 31 Figure 10 – SCA 300 Standard Wiring Diagram (Page 4 of 5) Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 19: Figure 11 - Sca 300 Standard Wiring Diagram
Installation Page 18 of 31 Figure 11 – SCA 300 Standard Wiring Diagram (Page 5 of 5) Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 20: Setup And Testing
WARNING: ALL SET UP AND TESTING PROCEDURES MUST BE PERFORMED WHILE THE VESSEL IS STATIONARY AND NOT UNDERWAY. Adjustments to the SCA 300 are made at the trimmer potentiometers (trim pots) located on the amplifier's circuit board. Each trim-pot can be located by reading the labels on the SCA 300’s circuit board or by referring to Figure 12. -
Page 21: Figure 12 - Sca 300 Internal Configuration
Setup and Testing Page 20 of 31 Figure 12 – SCA 300 Internal Configuration NOTE: Jastram’s input and output devices use plugs wherever possible in order to eliminate a reversed polarity condition (e.g. indicators displaying incorrect rudder direction). However, this condition may still occur where plugs are not used. - Page 22 Refer to RFU 1300 owner’s manual and correct the reversed polarity by rotating the RFU shaft 180° and re-centering. Then repeat from step (a). If rudder remains at approximately center or begins to oscillate about center then RFU polarity is correct. Doc No.: MAN01502, 27-02-01 SCA 300 Manual...
- Page 23 ROI displays the average angle. Swing the input device to its hard over positions and confirm that the ROI angles now match. If the ROI angles are still unacceptably unbalanced repeat the above procedure from step (d). Doc No.: MAN01502, 27-02-01 SCA 300 Manual...
- Page 24 If overshooting is noticed turn DEADBAND trim pot ½ turn CW and repeat balance adjustment from step (k). Doc No.: MAN01502, 27-02-01 SCA 300 Manual...
- Page 25 Confirm that all heat shrink tubing boots are threaded tightly against the plugs then unplug the SCA 300’s cables and carefully heat the shrink tubing attached to the plugs. This can be done with a torch at a low setting.
-
Page 26: Maintenance And Parts Lists
The SCA 300 is virtually maintenance free. No parts require routine maintenance. Once a year open the cover of the SCA 300 and visually check for signs of corrosion. If corrosion is apparent, replace corroded part. Ensure the lid is put on tightly. -
Page 27: Figure 13 - Sca 300 Assembly And Customer Parts List
Maintenance and Parts Lists Page 26 of 31 Figure 13 – SCA 300 Assembly and Customer Parts List Doc No.: MAN01502, 27-02-01 SCA 300 Manual... -
Page 28: Troubleshooting
FFU input signal. The FDBK GAIN trim pot in The feedback GAIN in the Refer to the RFU manual. the SCA 300 can not turn RFU (rudder feedback Increase the feedback far enough to make the unit) is too small. -
Page 29: Description Of Sca Inputs And Outputs
External Command (Switch to Ground) to SCA PCB for Stbd Dodge. EC-P External Command (Switch to Ground) to SCA PCB for Port Dodge. One Resistor in Series Different from SCA PCB Ground to Input Device Negative Potentiometer Pole. Doc No.: MAN01502, 27-02-01 SCA 300 Manual... - Page 30 SCA Negative DC (same as R6-P4) Wired thru SCA to Supply Remote Switch Functions NOT USED PORT 4-Way Directional Solenoid Valve to NFU Jog Lever Port Output NOT USED STBD 4-Way Directional Solenoid Valve to NFU Jog Lever Stbd Output Doc No.: MAN01502, 27-02-01 SCA 300 Manual...
- Page 31 Cable Shielding from SCA Chassis Ground. +VDC SCA and RFU 1300 PCB Positive DC from DC Supply. CGND SCA 300 - RFU 1300 PCB Negative DC Input from DC Supply. SCA Negative DC from DC Supply. Doc No.: MAN01502, 27-02-01...
-
Page 32: Figure 14 - Sca 300 Electrical Schematic
Troubleshooting Page 31 of 31 Figure 14 – SCA 300 Electrical Schematic Doc No.: MAN01502, 27-02-01 SCA 300 Manual...
Need help?
Do you have a question about the SCA 300 and is the answer not in the manual?
Questions and answers