Usage:
Parts Required
The following chart is for ordering the total parts required for a Computerized Monitoring System display module installation. Refer to the individual topics for the specific parts (and quantities) required for each particular installation. Items and quantities will vary according to the installation options chosen.
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.
CMS Panel Overview
Figure 35 - Computerized Monitoring System (CMS) Panel
The Computerized Monitoring System (CMS) is an electronic monitoring system designed to display various engine and transmission parameters.
There are twelve system diagnostic lamps available. The lamps are located on the right side in four rows of three.
Seven different engine/transmission parameters may be displayed on electronic gauges. The six left side gauges are arranges in two rows of three. The larger center gauge is the tachometer.
Beneath the tachometer is a three digit display and beneath that is a four digit display. The three digit display indicates which of the six left side gauges is being read.
The four digit display is used to display the six left side gauge readings. The illuminated arrows above the tachometer are used as synchronization indicators.
CMS Panel Dimensions
Figure 36 - CMS Panel Dimensions
Connecting The CMS Display
Figure 37 - CMS Wire Connections
Battery Connections
NOTE: Use 5A circuit protection on the +Battery supply to the display.
NOTE: The preferred method is to connect both PORT and STBD CMS displays through the same ignition switch.
1. Connect +Battery Bus Bar to the positive terminal of the Start (Ignition) Switch. Connect the RUN terminal of the Start (Ignition) Switch to the CMS 40-Pin connector pin-1.
2. Connect -Battery Bus Bar to the CMS 40-Pin connector pin-6.
Connecting The CMS Harness Code
NOTE: The CMS Harness Codes can only be used with the 139-0102 CMS Panel.
3. Connect -Battery to Harness Code 1 of the CMS 40-Pin connector pin-26.
4. Connect -Battery to Harness Code 2 of the CMS 40-Pin connector pin-28.
5. Connect -Battery to the Harness Code 3 input of the 40-Pin Connector. Refer to the table below.
6. Connect -Battery of Harness Code 4 to the CMS 40-Pin connector pin-25.
NOTE: Connecting pin-25 to the -Battery Bus Bar disables the transmission temperature and pressure displays. This option can be used in installations not requiring transmission monitoring.
Connecting CAT Data Link
NOTE: Refer to the table below for the proper pin numbers for your engine arrangement.
1. Connect the CAT Data Link+ terminal of engine room Data Bus Bar to the CAT Data Link+ terminal of the bridge Data Bus Bar.
2. Connect the CAT Data Link- terminal of engine room Data Bus Bar to the CAT Data Link- terminal of the bridge Data Bus Bar.
3. Connect the bridge CAT Data Link+ terminal to pin-23 of the PORT and STBD CMS Connectors (P6).
4. Connect the bridge CAT Data Link- terminal to pin-24 of the PORT and STBD CMS Customer Connectors (P6).
NOTE: Use 143-5018 Data Link Cable for CAT Data Link connections. The total cable length should not exceed 30m (100 ft).
Connecting The Display Dimming Switch
1. Connect the -Battery Bus Bar through a N/O momentary contact (Display Dimming) switch to the CMS 40-Pin connector pin-5. This will allow the brightness of the display to change every time the switch is closed.
NOTE: A separate Display Dimmer Switch must be installed for each display: one for the PORT CMS Display and one for the STBD CMS Display.
Connecting The Display Scroll Switch
2. Connect the -Battery Bus Bar through a N/O momentary contact (Display Scroll) switch to the CMS 40-Pin connector pin-8.
NOTE: A separate Display Scroll Switch must be installed for each display: one for the PORT CMS Display and one for the STBD CMS Display.
Connecting The Display US/Metric Switch
Automatic default setting for the CMS is U.S. units. If U.S. units are required, no switch connection is needed. Metric units are enabled when pin-20 is connected to -Battery. If only Metric units are required then a permanent connection to -Battery is needed. If both are needed, connect a US/Metric switch to each CMS Display as follows:
1. Connect -Battery Bus Bar through a N/O momentary contact (Display Scroll) switch to the CMS 40-Pin connector pin-20.
NOTE: A separate US/Metric switch must be installed for each display: one for the PORT CMS Display and one for the STBD CMS Display.
Connecting The Optional CMS Warning Alarm Output
The CMS provides a warning alarm output to warn the operator of any engine diagnostic and/or engine warning conditions present. An additional switch can be installed to enable or disable the alarm.
NOTE: The alarm driver is a 300 mAmp sourcing type driver.
Figure 38 - Warning Alarm Horn
1. Connect CMS 40-Pin connector pin-3 to the Warning Alarm pin-1.
2. Connect the Warning Alarm pin-2 to the Enable/Disable Switch pin-1.
3. Connect the Enable/Disable Switch pin-2 to the -Battery Bus Bar.