Usage:
Parts Required
The following chart is for ordering the total parts required for a Global Positioning System Interface Module installation.
NOTE: Customer (OEM) wiring and optional features are recommended. NO additional connections are allowed to any wires detailed and described in this publication without Caterpillar Inc. approval.
GPS Interface Module Dimensions
Figure 39 - GPS Interface Module Mounting Dimensions
Mounting Considerations
The installation can be customized to fit the vessel aesthetics, however, the package can not be modified in any fashion.
- * Four mounting holes are provided on the flange.
- * Secure the interface module (GPSIM) as close as possible to the display. Wiring between the GPSIM and display must be no greater than 300 mm (12 in).
Mount the GPSIM in a location that is protected from exposure to moisture.
Environmental Specifications
Operating temperature range: 5 to 40 °C (41 to 104 °F)
Storage temperature range: -25 to 60 °C (7 to 140 °F)
Humidity: 0 to 100%
GPS Interface Module Battery Connections
The GPS Interface Module (GPSIM) can be used with an Engine Vision or Engine Monitoring System (EMS) display. The GPSIM has a 24 VDC power requirement. If a 12 VDC electrical system is used, the GPSIM requires a 12 VDC to 24 VDC converter.
NOTE: Use 5A circuit protection on the 24 VDC +Battery supply to the module.
Figure 40 - GPS Power Connections
1. Connect the PORT Engine Power Switch to the 7C2668 Diode Block pin-6.
2. Connect the STBD Engine Power Switch to the 7C2668 Diode Block pin-5.
3. Connect the 7C2668 Diode Block pin-1 and pin-2 to the +V input of the 12/24 volt converter (12 VDC vessel electrical systems ONLY).
4. Connect the 24 VDC output to the +B terminal on the GPSIM.
NOTE: For 24 VDC systems connect pin-1 and pin-2 to the +B terminal on the GPSIM.
5. Connect the 24 VDC output to the common terminal of a SPST switch.
6. Connect the -Battery Bus Bar to the -B terminal on the GPSIM.
Connect Data Link To GPS Interface Module
Figure 41 - CAT Data Link Connections
GPS Interface Module Data Link Connections
NOTE: Refer to the table below for the proper pin numbers for your engine arrangement.
1. Connect the PORT ECM pin for CAT Data Link- to the STBD ECM pin for CAT Data Link-.
2. Connect the PORT ECM pin for CAT Data Link+ to the STBD ECM pin for CAT Data Link+.
3. Connect the Customer Connector pin for CAT Data Link- to the CAT Data Link- terminal on the GPSIM.
4. Connect the Customer Connector pin for CAT Data Link+ to the CAT Data Link+ terminal on the GPSIM.
NOTE: Use 143-5018 Data Link Cable for the CAT Data Link connections. The TOTAL cable length should not exceed 30 m (100 ft).
Connect GPS Interface Module To The Vessel GPS Receiver
Figure 42 - GPS Receiver to Interface Module Connections
1. Connect the GPS Receiver Data Output (Data Transmit) Signal line to the GPS Interface Module DB-25 connector pin-3.
2. Connect the GPS Receiver Signal Ground to the GPS DB-25 connector pin-7.
3. Connect pin-8 to pin-20 on the GPSIM DB-25 connector.
NOTE: Set the GPS receiver to (NEMA 0183 standard): 4800 Baud, No Parity, 8 Data Bits and 1 Stop Bit. If applicable: Set the GPS Receiver to transmit GLL, GLP to display position and VTG for vessel speed.