
MMU-16LE
SmartMonitor
Operations Manual
Eberle Design Inc.
Page 1
Section 1
General
1.1 DESCRIPTION
The MMU-16LE
SmartMonitor
®
series Malfunction Management Unit (MMU) is a device
used in a Traffic Controller Assembly to accomplish the detection of, and response to,
improper and conflicting signals and improper operating voltages in a Controller Assembly
caused by malfunctions of the Controller Unit (CU), load switches, or mis-wiring of the
cabinet. The MMU-16LE
SmartMonitor
®
also provides error sensing of two +24Vdc cabinet
supplies and the controller power supplies via +24V MONITOR I, +24V MONITOR II, and
Controller Voltage Monitor (CVM) inputs respectively. The Eberle Design MMU-16LE
SmartMonitor
®
is directly interchangeable with a standard NEMA Malfunction Management
Unit and meets with or exceeds all specifications outlined in Section 4 (Malfunction
Management Unit) of the National Electrical Manufacturers Association (NEMA)
Standards
Publication TS2-2003
v02.06,
Traffic Controller Assemblies With NTCIP
Requirements
.
1.2 ADVANCED FEATURE OVERVIEW
1.2.1 LIQUID CRYSTAL STATUS AND FIELD DISPLAY
The MMU-16LE
SmartMonitor
®
uses a programmable alpha-numeric Liquid Crystal Display
(LCD) to show monitor status and two icon based LCDs to show field signal channel and
fault status. This versatile back-lighted display system provides a service technician with
both detailed information regarding cabinet voltages, configuration, and status, and at the
same time an easily read field signal status display showing full intersection status.
1.2.2 MENU DRIVEN OPERATION
The Display, Program, and Help modes of the MMU-16LE
SmartMonitor
®
are controlled
using a simple menu driven user interface. The menu provides an organized scheme for
displaying both current status as well as reviewing historical fault status. It also provides a
mechanism for setting and reviewing the monitor enhanced-feature programming without
the need for a laptop computer.
1.2.3 CONTEXT SENSITIVE HELP SYSTEM
The built-in Help system provides operational guidance as well as trouble shooting advice
to both the novice and expert technician. The front panel HELP button presents the
requested information on the main LCD depending on the display page and context
currently selected.
From start to finish, a technician can use the Set-up Wizard to accurately and quickly
configure the monitor, and then use the Diagnostic Wizard to analyze the cause of a
malfunction without the need for understanding complex monitor terminology and theory.
1.2.3.1 SET-UP WIZARD
The built-in Set-up Wizard (see Section 6.3.14) configures the monitor enhanced-feature
programming using a simple series of intersection related questions. It allows a technician
to accurately and completely program the MMU-16LE
SmartMonitor
®
enhanced functions
without the need for understanding the complexities of monitor enhanced configuration
parameters.
1.2.3.2 DIAGNOSTIC WIZARD
The built-in Diagnostic Wizard (see Section 3.10) is an integral part of the Help System that
provides detailed diagnostic information regarding the fault being analyzed. The Wizard
provides a concise view of the signal states involved in the fault, pinpoints faulty signal