MMU-16LE
SmartMonitor
Operations Manual
Eberle Design Inc.
Page 2
inputs, and provides guidance on how the technician should isolate the cause of the
malfunction.
1.2.4 PROGRAM CARD MEMORY
All monitor enhanced-feature programming is stored in a nonvolatile memory contained on
the EDI Program Card. When replacing the MMU-16LE
SmartMonitor
®
for
service or test
purposes, all Nema standard and enhanced-feature programming is automatically
transferred to the replacement unit when the EDI Program Card is inserted. The EDI
Program Card is completely compatible with other MMU models compliant with the Nema
TS2-2003 Standard.
The Program Card Memory function must be enabled before use. The factory default
setting is Off.
See Section 6.3.4.6.
1.2.5 RMS VOLTAGE REPORTING
Input voltages are measured using a true Root Mean Squared (RMS) technique. A
dedicated Digital Signal Processor (DSP) RMS-Engine
®
controls the analog to digital (A/D)
hardware which samples each AC input voltage a minimum of 32 times per cycle. The
RMS-Engine
®
then calculates the true RMS voltage value producing accurate results which
are very insensitive to changes in frequency, phase, wave shape, and distortion.
1.2.6 ECCOM SOFTWARE INTERFACE
The field proven EDI
ECcom
Signal Monitor Communications software provides a laptop
computer or system interface to all information contained in the monitor. This includes
detailed status, voltages, configuration, as well as historical event logs, and five thirty
second Signal Sequence logs.
Event logs provide a historical record of previous fault data, ac line event data, monitor
reset events, and configuration programming change events. These logs are invaluable
when analyzing fault data to diagnose cabinet equipment malfunctions.
The Signal Sequence logs provide a graphical display of the signal states of all sixteen
channels for up to thirty seconds prior to the fault trigger point at 50 millisecond resolution.
The MMU-16LE
SmartMonitor
®
stores these signal records for the last five fault events.
The EDI ECcom software (
Version 3.5.8 or greater is required
) is available at no charge
from the EDI web site at
www.EDItraffic.com
.
1.2.7 NEMA TS-1 OPERATION WITH SDLC MODE
The MMU-16LE
SmartMonitor
®
can operate in a Nema TS-1 configured cabinet with the full
advantages of the Port 1 SDLC communications to the Controller Unit including Field
Check monitoring and the Diagnostic Wizard. In this mode the MMU-16LE
SmartMonitor
®
channel displays operate in the twelve channel configuration displaying the Walk input
status directly on the associated vehicle channels. Certain programming requirements exist
but typically no cabinet wiring modifications are necessary. See Section 1.4.2.1.
1.2.8 FLASHING YELLOW ARROW (FYA) PROTECTED-PERMISSIVE MOVEMENT
The MMU-16LE
SmartMonitor
®
is designed to monitor an intersection with up to four
approaches using the four section Flashing Yellow Arrow (FYA) movement outlined by the
NCHRP Research Project 3-54 on Protected/Permissive signal displays with Flashing
Yellow Arrows. Two cabinet configurations are supported for both the MMU Type 16 and
Type 12 modes depending on the number of load switches provided and the capabilities of
the Controller Unit. In both modes the MMU-16LE
SmartMonitor
®
has been designed to
provide the same broad fault coverage for the FYA approaches as it does for conventional
protected left turn phases including Conflict, Red Fail, Dual Indication, and both Minimum
Yellow and Minimum Yellow Plus Red Clearance monitoring. See section 3.11 for
programming information.