MMU2-16LE Series SmartMonitor
®
Malfunction Management Unit
Operations Manual
Eberle Design Inc. Page 3
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 MMU2-16LE SmartMonitor
®
stores these signal records for the last five
fault events.
The EDI ECcom software (Version 3.8.0 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 MMU2-16LE 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 MMU2-16LE
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 MMU2-16LE 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.
Twelve cabinet configurations are supported for the MMU2 Type 16 operation and four
configurations for the MMU2 Type 12 operation depending on the number of load
switches provided and the capabilities of the Controller Unit. In all modes the MMU2-
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.
1.3 GENERAL
The MMU2-16LE SmartMonitor
®
is normally configured as a 16 channel (Type 16)
monitor when operated in a TS2 type cabinet assembly. The Type 16 MMU mode is
intended for those applications in which there are three circuits per channel and the
MMU channels have been wired in a one-to-one correspondence with the load
switches, as defined in Section 5.5.3 paragraph 9 of the NEMA Standards Publication
TS2-2003 (R2008) v02.06. Each channel has the capability of monitoring a Green
(Walk), a Yellow, and a Red (Don’t Walk) field signal output at the Terminals and
Facilities field terminals.
The MMU2-16LE SmartMonitor
®
can also be configured as a 12 channel (Type 12)
monitor when operated in a NEMA TS1 type cabinet assembly. The Type 12 MMU
mode is intended to provide downward compatibility with 12 channel Conflict Monitor
Units (CMU) conforming to NEMA Traffic Control Systems Publication TS1-1989. Each
channel has the capability of monitoring a Green, a Yellow, a Red, and a Walk field
signal output at the Terminals and Facilities field terminals.
A Program Card is provided for assigning permissive channels. The MMU2-16LE
SmartMonitor
®
detects the presence of conflicting Green or Yellow ( or Walk) field
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