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Bienvenido: r400mac
Producto:  MARINE ENGINE
Modelo:  3412 MARINE ENGINE 3JK00212
Configuración: 3412C Marine Engine High Performance 3JK00146-UP

Información de Servicio General

MARINE ENGINE ELECTRONIC DISPLAY CMS, EMS, GPS AND EN
Número de medio -SENR1191-01 Fecha de publicación -13/10/1997 Fecha de actualización -11/10/2001

Engine Monitoring System Display Overview

Figure 25 - Engine Monitoring System Display

The Engine Monitoring System (EMS) displays various engine/transmission parameters. EMS provides
excellent visibility at various light conditions and supports backlight connections.

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The engine ECM monitors and processes engine operating parameters and diagnostic information. This
information is then transmitted to the Engine Monitoring System through the CAT Data Link. The Main EMS
Gauge Unit receives and displays information and communicates to the other gauges for display. Only two wires
are required from the ECM to the display to transmit/receive all engine operating parameters and diagnostic
information.

Engine Monitoring System incorporates three individual gauge units which can be installed in various locations
to enhance operator and vessel operation. The system has the ability to display vessel speed when connected to a
GPS Interface Module. Refer to the GPS Interface Module section for more information.

One Main EMS Gauge Unit is required for each desired operator station. The Tachometer and/or Quad-Gauge
Units are optional and will NOT operate without connection to a Main EMS Gauge Unit.

The following information describes the function and installation requirements of each gauge unit.

The Main EMS Gauge Unit has ten (two rows of five) indicators to display system related diagnostics. A digital
LCD readout displays the different engine/transmission parameters monitored.

Monitored parameters include the following:

Engine SpeedEngine Oil PressureEngine Coolant TemperatureTransmission Oil PressureTransmission Oil

TemperatureFuel RateEngine HoursEngine (Percent) LoadEngine Location

The Quad-Gauge Unit has scaled warning zones and displays engine oil pressure, engine coolant temperature,
marine gear oil pressure, and marine gear oil temperature in analog format.

The Tachometer Unit displays engine rpm on an analog style gauge. Vessel Speed, Engine Synchronization, and
Trolling Status are displayed on a digital LCD readout.

Engine Monitoring System Power Requirements

The Engine Monitoring System display hardware has a 24 VDC power requirement. If a 12 VDC electrical
system is used, the display will require a 12 VDC to 24 VDC (12/24) converter. The 127-8853 12 VDC to 24
VDC Converter is capable of supplying 5 Amps at 24 VDC and can be used in Engine Monitoring System
installations in vessels having a 12 VDC electrical system.

The 127-8853 case dimensions are:

Length ... 140 mm (5.5 in)

Width ... 89 mm (3.5 in)

Height ... 57 mm (2.7 in)

NOTE: Avoid splicing or soldering wire connections. All connections should be terminated at terminal strips to
ensure engine and communication systems reliability.

NOTE: Use 5A circuit protection on the 24 VDC +Battery supply to the display.

12 VDC To 24 VDC Converter Connections (12 Volt Vessel Systems ONLY)

1. Connect from the RUN Terminal of the Start Switch to the +V IN Terminal of the 12/24 Converter.

2. Connect from the +V OUT terminal to pin-1 on the EMS 40-Pin connector.

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3. Connect from the station -Battery Bus Bar to the -V OUT Terminal of the 12/24 Converter.

4. Connect from the 12/24 Converter -V IN Terminal to the 12/24 Converter -V OUT Terminal.

5. Connect from the 12/24 Converter -V OUT terminal to pin-2 on the EMS 40-Pin connector.

Figure 26 - 12 VDC To 24 VDC Connections

24 VDC System Connections

1. Connect from the RUN Terminal of the Start Switch to pin-1 on the EMS 40-Pin connector.

2. Connect from the -Battery Bus Bar to pin-2 on the EMS 40-Pin connector.

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Figure 27 - 24 VDC Connections

Engine Monitoring System Gauge Unit Mounting Dimensions

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Figure 28 - Gauge Module Dimensions

NOTE: Each module (gauge unit) has identical dimensions. The mounting options with bezels are described
below.

Each module can be mounted from either the front or rear, and with or without a decorative bezel. Each module
has a 5.0 mm (0.20 in) tapped hole in each corner (four holes), a 4 mm (0.16 in) clearance hole in each corner,
and four 6 mm (0.24 in) tapped holes in the back housing.

Front Mount
The fabricated gauge bracket is NOT required.

Bezels must be installed over the front of the module. The 5 mm (0.20 in) screws mount through four corners of
the bezel, through the dash panel mounting surface, and into the tapped gauge module holes.

Rear Mount

The bracket is required and may be "U" shaped to butt against the dash panel and pull the module tightly against
the dash panel. (The bracket shown is a reference. The length of the bracket legs must be adjusted to fit your
dash panel.) The bracket can be attached to the module with the 8T3992 screws 6 mm (0.24 in) in the holes on
the rear of the module

The bezel can then be attached to the gauge module with 7Y7388 screws 5 mm (0.2 in) through the bezel into
the tapped holes in the module flange.

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NOTE: Screws must not exceed 12 mm (0.47 in) long or they will protrude through the module into the dash
panel.

Connecting Engine Monitoring Display Modules

Figure 29 - Monitoring Display and Harness

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Connecting Harness To Gauge Units

1. Connect P1 (40-Pin) gauge connector to Main EMS Gauge Unit.

Connecting Tachometer and Quad-Gauge Units

2. Connect P2 (6-Pin) tachometer gauge connector to EMS Tachometer unit.

3. Connect P3 (6-Pin) quad-gauge connector to EMS Quad-Gauge unit.

24 VDC Battery Connections

4. Connect +Battery Bus Bar to the positive terminal of the Start (Ignition) Switch. Connect the Run terminal of
the Start (Ignition) Switch to pin-1 of J1 (12-Pin) EMS Customer Connector.

5. Connect -Battery Bus Bar to pin-2 of the J1 (12-Pin) EMS Customer Connector.

Connecting CAT Data Link

NOTE: Refer to the table below for the proper pin numbers for your engine arrangement.

1. Connect the PORT and STBD ECM Customer Connector CAT Data Link+ terminals to the CAT Data Link+
terminal of the Engine Room Data Terminal Strip.

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2. Connect the PORT and STBD ECM Customer Connector CAT Data Link- terminals to the CAT Data Link-
terminal of the Engine Room Data Terminal Strip.

3. Connect the CAT Data Link+ terminal of Engine Room Data Terminal Strip to the CAT Data Link+ terminal
of the Bridge Data Terminal Strip.

4. Connect the CAT Data Link- terminal of Engine Room Data Terminal Strip to the CAT Data Link- terminal of
the Bridge Data Terminal Strip.

5. Connect the bridge CAT Data Link+ terminal to pin-14 of the PORT and STBD EMS Customer Connectors
(P1).

6. Connect the bridge CAT Data Link- terminal to pin-5 of the PORT and STBD EMS Customer Connectors
(P1).

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Figure 30 - Data Link Connections

NOTE: Use 143-5018 Data Link Cable for CAT Data Link connections. The total cable length should not
exceed 30m (100 ft).

Connecting The EMS Harness Codes

1. Connect -Battery to the harness code input of the 8T9834 Plug Assembly (EMS 40-Pin Connector). Refer to
the table below.

Connecting Multiple EMS Displays

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Figure 31 - Multiple Display Connections

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Additional Engine Monitoring System displays can be installed for a multiple station installation. The Engine
Monitoring System for each station can be connected as shown in the illustration above. For additional stations,
make multiple connections to the CAT Data Link+ and CAT Data Link- while keeping the total combined cable
length as short as possible. The preferred method is through terminal strips.

NOTE: Use 143-5018 Data Link Cable for CAT Data Link+ and CAT Data Link- connections. The total length
of the cable should NOT exceed 30 m (100 ft).

Optional Switches

Parts Required

Figure 32 - Optional Connections

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Scroll Forward Or Backward Switch

1. Connect the EMS 12-Pin Customer Connector (J1) pin-4 to a momentary SPDT switch normally open
terminal.

2. Connect the EMS 12-Pin Customer Connector (J1) pin-11 to the other normally open switch terminal.

3. Connect the common terminal of the switch to the -Battery Bus Bar.

NOTE: Each time the Scroll Switch is DEPRESSED AND HELD, the EMS will scroll through the
engine/transmission parameters on the main unit. When the Scroll Switch is RELEASED, the EMS will display
the current data.

U.S./Metric Display Switch

Default setting for the Engine Monitoring System is Metric (SI) units. If Metric (SI) units are required, no
connection is needed. If U.S. (Non-SI) units are required, a permanent connection to -Battery is needed. If both
U.S. and Metric Units are required, install a SPST as follows:

1. Connect -Battery Bus Bar to the common terminal of the (U.S./Metric) switch.

2. Connect the open terminal to pin-3 of the J1 (12-Pin) Customer Connector. This will enable the user to select
display units (U.S./Metric).

Optional Diagnostic Outputs

The wiring harness provides diagnostic outputs, which can be used to drive a relay, audible or visual alarm.

The Engine Monitoring System alarm output warns the user of any engine diagnostic and/or engine warning
condition present. An additional switch can be installed to enable or disable the alarm.

NOTE: The alarm is disabled when the engine is not running.

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Diagnostic (Warning) Lamp

1. Connect pin-8 (Warning Lamp) of the 12-Pin Connector to the positive terminal of the lamp.

2. Connect the -Battery terminal to the -Battery Bus Bar.

Diagnostic Alarm

NOTE: The driver is a 300 mAmp sourcing type and may be used to drive an alarm.

3. Connect pin-9 (Alarm Lamp) of the J1 (12-Pin) Connector to the positive terminal of the alarm.

4. Connect the alarm -Battery terminal to the -Battery Bus Bar.

Optional Engine Monitoring System Alarm Enable/Disable Switch

5. Connect -Battery terminal pin-2 of the alarm to pin-1 of the Enable/Disable Alarm Switch.

6. Connect pin-2 of the Enable/Disable Alarm Switch to -Battery Bus Bar.

Transmission Function Disable (Display/Diagnostic)

7. Connect -Battery Bus Bar to pin-7 (Monitor Trans) of the J1 (12-Pin) Customer Connector.

NOTE: When pin-7 is connected to -Battery Bus Bar, the transmission temperature AND transmission pressure
displays are disabled. This option can be used in installations that do not require transmission monitoring.

Connecting Gauge Backlighting

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1. Insert lamps into P4 and P5 (Tachometer Backlight).

2. Insert lamps into P6 and P7 (Quad-Gauge Backlight).

3. Connect P4 and P5 (Tachometer Backlight) to the Tachometer gauge.

4. Connect P6 and P7 (Quad-Gauge Backlight) to the Quad-Gauge.

Backlight Dimming Potentiometer

Figure 33 - Potentiometer Input Connections

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5. Connect pin-10 (Aux Ckt) of the J1 (12-Pin) Connector to the wiper of the dimmer potentiometer.

6. Connect one terminal of the dimmer potentiometer to the +Battery Bus Bar.

7. Connect the other terminal to the -Battery Bus Bar.

Connecting An Optional Remote Unit

Tachometer Or Quad-Gauge

NOTE: The wires should be 16 AWG wire with the length NOT exceeding 6m (20 ft).

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Figure 34 - Remote Gauge Input Connections

1. Connect pin-5 (Mod Load) of the J2 8-Pin Engine Monitoring System Customer Connector to pin-5 (Mod
Load) of the 6-Pin Remote Gauge Connector.

2. Connect pin-3 (Mod Clock) of the J2 8-Pin Engine Monitoring System Customer Connector to pin-3 (Mod
Clock) of the 6-Pin Remote Gauge Connector.

3. Connect pin-1 (+V Mod) of the J2 8-Pin Engine Monitoring System Customer Connector to pin-1 (+V Mod)
of the 6-Pin Remote Gauge Connector.

4. Connect pin-4 (Mod Data) of the J2 8-Pin Engine Monitoring System Customer Connector to pin-4 (Mod
Data) of the 6-Pin Remote Gauge Connector.

5. Connect pin-2 (-Battery) of the 8-Pin Engine Monitoring System Connector to pin-2 (-Battery) of the 6-Pin
Remote Gauge Connector.

Remote Gauge Backlight

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1. Connect pin-8 (+Battery Illumination) of J2 8-Pin Remote Gauge Connector to the +Battery terminal of the
dimmer potentiometer.

2. Connect pin-7 (-Battery Illumination) of J2 8-Pin Remote Gauge Connector to the -Battery terminal of the
dimmer potentiometer.

3. Connect the wiper terminal of the dimmer potentiometer to pin-2 if one Remote Gauge Backlight.

4. Connect pin-7 (-Battery Illumination) of J2 8-Pin Remote Gauge Connector to pin-1 if the other Remote
Gauge Backlight.

5. Connect pin-1 of the first Remote Gauge Backlight to pin-2 of the other Remote Gauge Backlight.

Copyright 1993 - 2018 Caterpillar Inc. Wed Oct 03 2018 20:26:41 GMT-0400 (hora de Bolivia)
Todos los derechos reservados.
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Red privada para licenciados del SIS.

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