
MMU-16LE
SmartMonitor
Operations Manual
Eberle Design Inc.
Page 5
Traffic Control Systems Publication TS1-1989. When operating in the Type 12 mode, the
MMU-16LE
SmartMonitor
®
monitoring functions are the same as the Type 16 mode except
that Port 1 communications are disabled and Field Check Monitoring is disabled. See also
TYPE 12 MODE WITH SDLC Option, section 1.4.2.1.
1.4.2.1 TYPE 12 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. In this mode the MMU-16LE
SmartMonitor
®
channel displays operate in
the Type 12 configuration displaying the Walk input status directly on the associated
vehicle channels (2, 4, 6, and 8). Certain requirements exist for this mode to operate
correctly:
1.
This mode is limited to a maximum of four Ped phases which must be assigned
to vehicle phases 2, 4, 6, and 8. The Walk field terminals must be wired to the
MMU-16LE
SmartMonitor
®
channel inputs 2W, 4W, 6W, and 8W on MMU
connector pins MSA-y, MSA-FF, MSA-EE, and MSA-u respectively. This is
conventional wiring for a standard Nema TS-1 cabinet. MMU input TYPE
SELECT (pin #HH) must be “open circuit” (False).
2.
The Controller Unit (CU) must be TS-2 Type 2 capable and provide the Port 1
EIA-485 communications port. The Controller Unit must be configured for MMU
operation in the following areas (terminology and procedure may vary with
different brands of CU):
a.
Enable the MMU in the CU Port 1 setup.
b.
Add the Ped channels to the CU ring structure with the following
assignments:
Ped Phase
MMU Channel
Phase 2 Ped
13
Phase 4 Ped
14
Phase 6 Ped
15
Phase 8 Ped
16
c.
The CU Signal Driver Output mapping may need to be modified to
ensure that the CU is still driving the Ped load switches from the
correct output pins: MSA-J (2W), MSB-d (4W), MSC-LL (6W), and
MSC-d (8W).
3.
TS-2 Controller Units provide an MMU utilization diagnostic that verifies the MMU
Program Card channel compatibility to the CU Driver Group Utilization (Nema
TS-2 clause 3.9.3.1.3). Depending on the CU capabilities, jumpers may need to
be added to the MMU-16LE
SmartMonitor
®
Program Card permissive matrix as if
the Walk inputs were actually assigned to MMU channels 13 (2P), 14 (4P), 15
(6P), and 16 (8P).
Note that the MMU-16LE
SmartMonitor
®
will only use the channel 2, 4, 6, and 8
jumper programming for actual conflict detection. Program Card jumpers added
to channels 13, 14, 15, and 16 in the Type 12 With SDLC mode are only used by
the MMU-16LE
SmartMonitor
®
to satisfy the utilization diagnostic of the controller
unit described above.
4.
A proper Port 1 EIA-485 rated cable must be connected between the CU Port 1
and the MMU-16LE
SmartMonitor
®
Port 1.
See Section 6.3.4.9 for the Type 12 with SDLC option setting.