Reno MMU-1600G Series User manual

551-3813-00 - Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL RENO A&E
Reno A&E
4655 Aircenter Circle
Reno, Nevada 89502
USA
Telephone: [phone]
Facsimile: [phone]
Internet: www.renoae.com
E-mail: [e-mail]
NEMA TS 2
-
20
NEMA TS 2
-
2003 Malfunction Management Unit
MMU-1600G SERIES OPERATION MANUAL
Firmware Version 1.07.23

Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL Page 2 of 58
IMPORTANT NOTE
This Reno A&E Malfunction Management Unit was designed, built, inspected, and tested
to ensure its proper operation. It is Reno A&E’s recommendation that each Malfunction
Management Unit be tested at least annually to ensure compliance with factory and
NEMA specifications and proper operation and that the results of this testing be
documented.

Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL Page 3 of 58
MMU-1600G SERIES OPERATION MANUAL
TABLE OF CONTENTS
1.0 GENERAL DESCRIPTION ............................................................................................................................................ 6
2.0 GENERAL CHARACTERISTICS .................................................................................................................................. 7
2.1 Inputs ................................................................................................................................................................................................ 7
2.1.1 AC Line ...................................................................................................................................................................................... 7
2.1.2 AC Neutral ................................................................................................................................................................................. 7
2.1.3 Earth Ground .............................................................................................................................................................................. 7
2.1.4 Field Terminals (Reds, Yellows, Greens, and Walks) ................................................................................................................ 7
2.1.5 Red Enable ................................................................................................................................................................................. 8
2.1.6 Logic Ground ............................................................................................................................................................................. 8
2.1.7 +24V Monitor I .......................................................................................................................................................................... 8
2.1.8 +24V Monitor II ......................................................................................................................................................................... 8
2.1.9 24V Monitor Inhibit ................................................................................................................................................................... 8
2.1.10 Controller Voltage Monitor (CVM) ........................................................................................................................................... 8
2.1.11 Type Select ................................................................................................................................................................................. 8
2.1.12 Local Flash Status ....................................................................................................................................................................... 9
2.1.13 Port 1 Disable ............................................................................................................................................................................. 9
2.1.14 Reset ........................................................................................................................................................................................... 9
2.1.15 Cabinet Interlock ........................................................................................................................................................................ 9
2.2 Outputs.............................................................................................................................................................................................. 9
2.2.1 Output Relay ............................................................................................................................................................................... 9
2.2.2 Start Delay Relay ........................................................................................................................................................................ 9
2.3 Programming Card .......................................................................................................................................................................... 10
2.3.1 Channel Compatibility .............................................................................................................................................................. 10
2.3.2 Minimum Flash ........................................................................................................................................................................ 10
2.3.3 Minimum Yellow Change Channel Disable ............................................................................................................................. 10
2.3.4 Voltage Monitor Latch ............................................................................................................................................................. 10
2.3.5 Serial EEPROM........................................................................................................................................................................ 10
2.4 Features ........................................................................................................................................................................................... 10
2.4.1 Monitor Power Failure .............................................................................................................................................................. 10
2.4.2 Minimum Flashing Indication .................................................................................................................................................. 11
2.4.3 Reset ......................................................................................................................................................................................... 11
2.4.4 Type 16 Only Mode .................................................................................................................................................................. 11
2.4.5 COM Port ................................................................................................................................................................................. 11
2.4.6 Ethernet Port ............................................................................................................................................................................. 11
2.4.7 Temperature Sensor .................................................................................................................................................................. 12
2.4.8 Real Time Clock ....................................................................................................................................................................... 12
2.4.9 Up Time Accumulator .............................................................................................................................................................. 12
2.4.10 Configuration Monitoring (Beeping Monitor) .......................................................................................................................... 12
2.4.11 Factory Settings ........................................................................................................................................................................ 13
2.4.12 User Unit Information .............................................................................................................................................................. 13
2.5 Fault Monitoring ............................................................................................................................................................................. 13
2.5.1 Conflict Monitoring .................................................................................................................................................................. 13
2.5.2 Red Fail Monitoring ................................................................................................................................................................. 13
2.5.3 Dual Indication Monitoring ...................................................................................................................................................... 14
2.5.4 GY-Dual Indication Monitoring ............................................................................................................................................... 15
2.5.5 Short Yellow Monitoring .......................................................................................................................................................... 16
2.5.6 Short Clearance Monitoring ..................................................................................................................................................... 16
2.5.7 Field Check Monitoring ............................................................................................................................................................ 17
2.5.8 Port 1 Fail Monitoring .............................................................................................................................................................. 17
2.5.9 +24 Volt Monitor I ................................................................................................................................................................... 18
2.5.10 +24 Volt Monitor II .................................................................................................................................................................. 18
2.5.11 Controller Voltage Monitor ...................................................................................................................................................... 18
2.5.12 Local Flash ............................................................................................................................................................................... 19
2.5.13 External Watchdog Monitoring ................................................................................................................................................ 19
2.5.14 Programming Card Absent Monitoring .................................................................................................................................... 20
2.6 Testing Modifiers ............................................................................................................................................................................ 20
2.6.1 Flashing Don’t Walk Monitoring ............................................................................................................................................. 20
2.6.2 Co-Channel Monitoring ............................................................................................................................................................ 20
2.6.3 Flashing Yellow Arrow Monitoring ......................................................................................................................................... 21
2.6.4 LED Thresholds........................................................................................................................................................................ 22
2.6.5 Per Channel Red Enable ........................................................................................................................................................... 22
2.6.6 Modified CVM Latch ............................................................................................................................................................... 22
2.6.7 12 Volt DC Monitoring ............................................................................................................................................................ 23

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2.6.8 Disable Local Flash .................................................................................................................................................................. 23
2.6.9 Flashing Green (Canadian Fast Flash) ...................................................................................................................................... 23
2.6.10 Channels with Pedestrian Displays ........................................................................................................................................... 23
2.7 Event Logging ................................................................................................................................................................................ 24
2.7.1 Time Change Log ..................................................................................................................................................................... 24
2.7.2 Monitor Reset Log .................................................................................................................................................................... 24
2.7.3 Configuration Event Log .......................................................................................................................................................... 24
2.7.4 Prior Faults Log ........................................................................................................................................................................ 24
2.7.5 AC Line Log ............................................................................................................................................................................. 24
2.7.6 Signal Sequence Log ................................................................................................................................................................ 24
2.7.7 Logging Options ....................................................................................................................................................................... 25
2.7.7.1 Log Field Changes ............................................................................................................................................................. 25
2.7.7.2 Log Local Flash Events ...................................................................................................................................................... 25
2.7.7.3 Log CVM Events ............................................................................................................................................................... 25
2.8 Diagnostics ..................................................................................................................................................................................... 25
2.8.1 Memory .................................................................................................................................................................................... 25
2.8.2 Microprocessor Monitor ........................................................................................................................................................... 25
2.8.3 Internal Voltage Monitors......................................................................................................................................................... 25
2.8.4 Diagnostic Codes ...................................................................................................................................................................... 26
3.0 SPECIFICATIONS ........................................................................................................................................................ 27
3.1 Physical ........................................................................................................................................................................................... 27
3.2 Electrical ......................................................................................................................................................................................... 27
3.3 Timing Functions ............................................................................................................................................................................ 28
3.4 Connector Pin Assignments ............................................................................................................................................................ 29
3.5 Programming Card Pin Assignments .............................................................................................................................................. 31
3.6 Programming Card Minimum Flash Programming ............................................................................................................. 31
4.0 USER INTERFACE ....................................................................................................................................................... 32
4.1 Graphic Display Menu Structure .................................................................................................................................................... 33
4.2 Front Panel Display and Pushbuttons.............................................................................................................................................. 34
4.3 Help System .................................................................................................................................................................................... 34
4.4 Run Time Display ........................................................................................................................................................................... 35
4.4.1 Normal ...................................................................................................................................................................................... 35
4.4.2 Fault .......................................................................................................................................................................................... 35
4.4.3 Changes Pending ...................................................................................................................................................................... 35
4.4.4 Upgrade Pending ...................................................................................................................................................................... 35
4.5 Voltage Displays ............................................................................................................................................................................. 35
4.6 Main Menu...................................................................................................................................................................................... 35
4.6.1 Identification Menu .................................................................................................................................................................. 36
4.6.1.1 User Unit Information ........................................................................................................................................................ 36
4.6.1.2 Factory Unit Information.................................................................................................................................................... 36
4.6.1.3 Ethernet Settings ................................................................................................................................................................ 36
4.6.2 Configuration Menu ................................................................................................................................................................. 37
4.6.2.1 Fault Monitoring Menu ...................................................................................................................................................... 37
4.6.2.1.1 Start Configuration .......................................................................................................................................................... 37
4.6.2.1.2 Cancel Configuration ...................................................................................................................................................... 37
4.6.2.1.3 Save Configuration ......................................................................................................................................................... 37
4.6.2.1.4 Rollback Changes ........................................................................................................................................................... 37
4.6.2.1.5 Testing Defaults .............................................................................................................................................................. 38
4.6.2.1.6 Configuration CRC ......................................................................................................................................................... 38
4.6.2.1.7 Config Settings Menu ..................................................................................................................................................... 38
4.6.2.1.7.1 Programming Card Menu ...................................................................................................................................... 38
4.6.2.1.7.1.1 Per Channel Permissives .................................................................................................................................. 38
4.6.2.1.7.1.2 Minimum Yellow Change Disable / Latches / Minimum Flash ....................................................................... 38
4.6.2.1.7.2 Dual Indication / Field Check ................................................................................................................................ 39
4.6.2.1.7.3 Per Channel Red Enables ....................................................................................................................................... 39
4.6.2.1.7.4 Flashing Don’t Walk Monitoring .......................................................................................................................... 39
4.6.2.1.7.5 Flashing Yellow Arrow Left Turn Settings ........................................................................................................... 39
4.6.2.1.7.6 Co-Channel Child Settings .................................................................................................................................... 40
4.6.2.1.7.7 Threshold Settings ................................................................................................................................................. 40
4.6.2.1.7.8 Logging Options .................................................................................................................................................... 41
4.6.2.1.7.9 Others / Miscellaneous Location Settings .............................................................................................................. 41
4.6.2.1.8 Factory Settings .............................................................................................................................................................. 41
4.6.2.1.9 Clear All Settings ............................................................................................................................................................ 41
4.6.2.1.10 Wizard ............................................................................................................................................................................. 41
4.6.2.1.10.1 General Questions.................................................................................................................................................. 42
4.6.2.1.10.2 Channel Assignments ............................................................................................................................................ 42
4.6.2.1.10.3 Left Turn Configurations ....................................................................................................................................... 42
4.6.2.1.10.4 Left Turn Summary ............................................................................................................................................... 43
4.6.2.1.10.5 Warning Screens .................................................................................................................................................... 43

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4.6.2.1.10.6 Almost Done .......................................................................................................................................................... 43
4.6.2.2 General Settings ................................................................................................................................................................. 43
4.6.2.2.1 AC Logging Events ......................................................................................................................................................... 43
4.6.2.2.2 User Unit Information ..................................................................................................................................................... 43
4.6.2.2.3 Factory Unit Information ................................................................................................................................................ 44
4.6.2.2.4 Comm Port Settings ........................................................................................................................................................ 44
4.6.2.2.5 Ethernet Settings ............................................................................................................................................................. 44
4.6.3 Logging System ........................................................................................................................................................................ 44
4.6.3.1 View Logs .......................................................................................................................................................................... 44
4.6.3.1.1 View Date & Time Log................................................................................................................................................... 44
4.6.3.1.2 View AC Line Log .......................................................................................................................................................... 44
4.6.3.1.3 View Resets Log ............................................................................................................................................................. 44
4.6.3.1.4 View Configurations Log Menu ..................................................................................................................................... 45
4.6.3.1.4.1 View Configurations Settings ................................................................................................................................ 45
4.6.3.1.4.2 Compare Current To Pending ................................................................................................................................ 45
4.6.3.1.4.3 Compare Configuration To Current ....................................................................................................................... 45
4.6.3.1.4.4 Compare Configuration To Prior ........................................................................................................................... 45
4.6.3.1.4.5 View Prior Faults Log ........................................................................................................................................... 45
4.6.3.1.5 View Signal Sequence Log ............................................................................................................................................. 46
4.6.3.2 Clear Logs .......................................................................................................................................................................... 46
4.6.3.3 Clear All Logs .................................................................................................................................................................... 46
4.6.3.4 AC Logging Events Thresholds ......................................................................................................................................... 46
4.6.4 Date & Time Menu ................................................................................................................................................................... 46
4.6.4.1 View / Set Date and Time .................................................................................................................................................. 46
4.6.4.2 View / Set Daylight Saving Time Ahead ........................................................................................................................... 47
4.6.4.3 View / Set Daylight Saving Time Back .............................................................................................................................. 47
4.6.4.4 View Up Time .................................................................................................................................................................... 47
4.6.5 Real Time Monitor Status Menu .............................................................................................................................................. 47
4.6.5.1 Channels 1 - 6..................................................................................................................................................................... 47
4.6.5.2 Channels 7 - 12................................................................................................................................................................... 47
4.6.5.3 Channels 13 - 16 ................................................................................................................................................................. 47
4.6.5.4 Other AC and Miscellaneous Inputs ................................................................................................................................... 47
4.6.5.5 DC Inputs ........................................................................................................................................................................... 47
4.6.6 Diagnostic Info ......................................................................................................................................................................... 48
4.6.6.1 LED Test Settings .............................................................................................................................................................. 48
4.6.6.2 Screen Test ......................................................................................................................................................................... 48
4.6.6.3 Fault Codes ........................................................................................................................................................................ 48
4.6.6.4 Diagnostic SDLC Frames Menu ........................................................................................................................................ 48
4.6.6.5 Firmware Versions ............................................................................................................................................................. 48
4.6.6.6 Diagnostic Statistics Menu ................................................................................................................................................. 49
4.6.6.6.1 SDLC Statistics ............................................................................................................................................................... 49
4.6.6.6.2 Comm Port Statistics ....................................................................................................................................................... 49
4.6.6.6.3 Ethernet Port Statistics .................................................................................................................................................... 49
4.6.6.6.4 DC Processor Communication Statistics ......................................................................................................................... 49
4.6.6.6.5 Speed Statistics ............................................................................................................................................................... 49
4.6.6.7 Factory Diagnostics ............................................................................................................................................................ 49
4.7 Front Panel LED Indicators ............................................................................................................................................................ 50
4.7.1 Field Status Indicators .............................................................................................................................................................. 50
4.7.2 Power / Type Indicators ............................................................................................................................................................ 50
4.7.3 Transmit / Receive Indicators ................................................................................................................................................... 50
4.7.4 Fault Indicators ......................................................................................................................................................................... 50
4.7.5 Function Disabled Indication .................................................................................................................................................... 51
4.8 Audible Buzzer ............................................................................................................................................................................... 51
4.8.1 Critical Failure .......................................................................................................................................................................... 51
4.8.2 Configuration Change............................................................................................................................................................... 51
4.9 Diagnostic Display Mode ............................................................................................................................................................... 52
4.9.1 Ethernet IP Address .................................................................................................................................................................. 53
4.9.2 AC Line Voltage....................................................................................................................................................................... 53
4.9.2.1 Configuration CRC ............................................................................................................................................................ 53
4.9.3 Configuration Display 1 ........................................................................................................................................................... 53
4.9.3.1 Permissive Displays ........................................................................................................................................................... 54
4.9.4 Configuration Display 2 ........................................................................................................................................................... 54
4.9.4.1 Flashing Yellow Arrow Displays ....................................................................................................................................... 55
4.9.4.2 Co-Channel Displays.......................................................................................................................................................... 55
4.9.5 Prior Faults ............................................................................................................................................................................... 55
4.10 Program Card Change Display ....................................................................................................................................................... 56
5.0 FIRMWARE UPGRADE............................................................................................................................................... 57

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1 . 0 G E N E R A L D E S C R I P T I O N
This product manual was written for people installing, operating, and maintaining the Reno A&E Model MMU-1600G
Malfunction Management Unit (monitor).
The Reno A&E MMU-1600G was designed to meet or exceed the standards defined in Section 4 of the NEMA Standards
Publication TS 2-2003. Section 4 responds to the need for a monitor to accomplish the detection of, and response to,
improper and conflicting signals and improper operating voltages in a Controller Assembly (CA). This standard provides
interchangeability between units of different manufacturers and downward compatibility to NEMA Standards Publication TS
1-1989.
The MMU-1600G detects the presence of voltage on conflicting field connection terminals, the absence of proper voltages on
all of the signal field connection terminals of a channel, and monitors for the presence of satisfactory operating voltages
within the Controller Unit (CU) and the monitor itself. If any of these conditions exist or are out of tolerance for the
minimum time defined in Section 4 of the NEMA Standards Publication TS 2-2003, the Output relay’s normally open
contacts will transfer from the no fault state (relay energized) to the fault state (relay de-energized). The closure of the
Output relay contacts will cause the transfer of the traffic signals to Flashing Operation. The fault is recorded by the MMU-
1600G and displayed on the appropriate LED indicators.
The MMU-1600G will operate in one of two modes depending on the signal level on the Type Select input. If the Type
Select input is at Logic Ground potential, the monitor will operate as a Type 16 monitor with sixteen channels, otherwise it
will operate as a Type 12 monitor with twelve channels.
Type 16 - Each of the sixteen channels monitors three 120 volt AC outputs; Green / Walk, Yellow, and Red / Don’t Walk.
Type 12 - Each of the twelve channels monitors four 120 volt AC outputs; Green, Yellow, Walk, and Red.
For TS 2 type operation the MMU-1600G is usually configured as a Type 16 monitor. The Type 16 monitor is intended for
those applications in which there are three circuits per channel and the monitor 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 TS 2-
2003. The Type 12 monitor is intended to provide downward compatibility with a 12 channel conflict monitor unit (CMU)
conforming to TS 1-1989.
The signal monitor portion of the monitor is capable of checking for the presence of voltage on conflicting field connection
terminals in the Controller Assembly. For the purpose of conflict determination, a signal on any of the Green, Yellow, or
Walk inputs associated with a channel shall be considered as that channel being active.
The signal monitor portion of the monitor is also capable of checking for the absence of any required signal voltage on each
channel at the field connection terminals in the Controller Assembly. For this purpose a signal on the Green, Yellow, Walk,
or Red/Don’t Walk inputs associated with a channel shall be considered as that channel being active.
The voltage monitor portion of the monitor is capable of checking the Controller Unit Voltage Monitor output that indicates
satisfactory operating voltage in the Controller Unit and the +24 volt direct current inputs.
The Model MMU-1600G is fully programmable. The monitor has a unique graphics based Organic Light Emitting Diode
(OLED) display. The OLED display allows access to all configuration settings, real-time monitor status with applicable AC
and DC voltages, advanced diagnostic information, all logs including the most current signal sequence log, and context
sensitive help screens.
An interchangeable programming card is provided to allow the assignment of permissive or compatible channels.
Programming is accomplished through the use of soldered wire jumpers on the programming card. The programming card
may be used in a monitor operating in either Type 16 or Type 12 mode. The programming card can be inserted into the
monitor through a slot in the front panel. The programming card also contains a serial EEPROM. This device is used to
store programming information not set by the wire jumpers. Features stored in the serial EEPROM include Flashing Don’t
Walk Monitoring, Co-Channel Childs, Per Channel Red Enable, Location, Unit ID, Agency ID, IP Address, and others.
When configured in the Type 16 mode and connected to a TS 2 Controller Unit, the monitor has the ability to exchange
information in a standardized format with the Controller Unit in real time through the Port 1 interface. The monitor and the
Controller Unit perform redundant checks on each other through messages defined in the TS 2 Standard. The Controller Unit
can access monitor information including field signal input status, permissive programming, and fault status. This gives the
Controller Unit the capability to function as a backup monitor and make enhanced event logging, remote intersection
monitoring, and remote diagnostics possible. Likewise, the monitor receives information from the Controller Unit
corresponding to Controller Unit output commands to the various load switches. Access to this information allows the
monitor to more accurately respond to and diagnose fault situations.
Requirements outlined in the TS 2 Standard provide for messages to be generated by the Controller Unit and the monitor,
which effectively extend the communications capabilities of a standard assembly. The monitor utilizes these message
facilities to provide the highest level of enhanced application specific diagnostic reporting and monitoring.

Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL Page 7 of 58
The Model MMU-1600G Series is comprised of the following monitors:
Model MMU-1600G (Reno USA) For applications calling for a NEMA TS 2-2003 compliant Malfunction
Management Unit with integral graphics display.
Model MMU-1600G (Reno Canada) For applications calling for a NEMA TS 2-2003 compliant Malfunction
Management Unit with integral graphics display and Canadian Fast Flash
monitoring.
Model MMU-1600GE (Reno USA) For applications calling for a NEMA TS 2-2003 compliant Malfunction
Management Unit with integral graphics display and optional Ethernet network
connector.
Model MMU-1600GE (Reno Canada) For applications calling for a NEMA TS 2-2003 compliant Malfunction
Management Unit with integral graphics display and Canadian Fast Flash
monitoring and optional Ethernet network connector.
2 . 0 G E N E R A L C H A R A C T E R I S T I C S
2.1 INPUTS
2.1.1 AC Line
The over-current protected side of 120 volt AC 60 hertz source. This input (Connector A - Pin A) is used to generate the
voltages required to operate the monitoring logic. The monitor has a front panel mounted over-current protection device in
the 120 volt AC input to the unit. This fuse is a 1/4 AMP SLO-BLOW and should only be replaced with a fuse of the same
type and value.
Typical Connection: Cabinet AC Line power source.
2.1.2 AC Neutral
The unfused and unswitched return side of the 120 volt AC 60 hertz power source. This input (Connector A - Pin V) is the
referenced signal for all field terminal voltage sensing inputs. This input is not connected to Logic Ground or Earth Ground
within the unit.
Typical Connection: Cabinet AC Neutral.
2.1.3 Earth Ground
The monitor has an input terminal (Connector A - Pin U) providing an independent connection to the chassis of the unit.
This input is not connected to Logic Ground or AC Neutral within the unit.
Typical Connection: Cabinet Earth Ground.
2.1.4 Field Terminals (Reds, Yellows, Greens, and Walks)
The field terminal inputs are where the Red, Yellow, Green, and Walk indications are connected to the monitor. The inputs
used and how they are used is determined by the state of the Type Select input (See Section 2.1.11).
Type 16: Three inputs are provided for each channel to permit the monitoring of voltages at the Green, Yellow, and Red
signal field terminals. If the channel is used to monitor pedestrian indication, they are connected Don’t Walk to Red,
Pedestrian Clearance to Yellow, and Walk to Green.
Type 12: Four inputs are provided for each channel to permit the monitoring of voltages at the Green, Yellow, Red, and
Walk signal field terminals.
The thresholds used to determine the ON and OFF states of the field terminals can be modified from the standard
(incandescent) thresholds to ones more appropriate for LED field displays. The LED thresholds are more restrictive than the
standard thresholds. Therefore, you will not miss a fault using the LED thresholds that would have been detected using the
standard thresholds.
In the Standard Mode (Incandescent Field Displays):
A Green, Yellow, or Walk signal input is sensed as ON when it exceeds 25VRMS and a signal input is sensed as OFF when
it is less than 15VRMS. Signals between 15VRMS and 25VRMS may be in either state.
A Red signal input is sensed as ON when it exceeds 70VRMS and a signal input is sensed as OFF when it is less than
50VRMS. Signals between 50VRMS and 70VRMS may be in either state.
In the LED mode (LED Field Displays):
For the purpose of testing for Conflicts, Multiple Indications, and Flashing Don’t Walk Monitoring, a Green, Yellow,
Red, or Walk signal input is sensed as ON when it exceeds 25VRMS and a signal input is sensed as OFF when it is less
than 15VRMS. Signals between 15VRMS and 25VRMS may be in either state.

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For the purpose of testing for Red Fails, Co-Channel Childs, Short Yellows, and Short Clearance, a Green, Yellow, Red,
or Walk signal input is sensed as ON when it exceeds 70VRMS and a signal input is sensed as OFF when it is less than
50VRMS. Signals between 50VRMS and 70VRMS may be in either state.
When the load connected to the sensing input of the monitor exhibits high impedance characteristics such as those caused by
some LED signal displays or burned out lamps, it may be necessary to place a low impedance device (load resistor) external
to the unit between the unit input and AC Neutral. See Section 6.2.4 of NEMA Standards Publication TS 2-2003.
Typical Connections: Field terminals for channel Reds, Yellows, Greens, and Walks as appropriate.
2.1.5 Red Enable
The presence of the proper voltage at this terminal (Connector B - Pin a) enables the monitor to detect the absence of voltage
on all field signal inputs of a channel. The absence of the proper voltage inhibits the detection of the absence of voltage on
all field signal inputs of a channel. This input is considered enabled when the input voltage exceeds 89VRMS at the Red
Enable input. This function is considered not enabled when the input voltage is less than 70VRMS at the Red Enable input.
The presence of the proper voltage at this terminal also enables Minimum Yellow Change / Red Clearance Interval
Monitoring and Field Check / Dual Indication Monitoring. The absence of the proper voltage at this terminal inhibits
Minimum Yellow Change / Red Clearance Interval Monitoring.
The monitor will not recognize state changes of the Red Enable input while AC power is not valid. This ensures that short
power interruptions do not cause unintended state changes of the Red Enable input.
Typical Connection: Control point that has 120VAC when the cabinet is in normal operation.
2.1.6 Logic Ground
A voltage reference point and current return for the Reset input, Controller Voltage Monitor input, +24V Monitor I input,
+24V Monitor II input, Type Select input, +24V Monitor Inhibit input, Local Flash Status input, and Port 1 Disable input as
well as the Port 1 SDLC communications signals. This termination (Connector A - Pin T) is not connected to either the AC
Neutral or Earth Ground within the unit.
Typical Connection: Power Supply DC Common and/or Controller Logic Ground.
2.1.7 +24V Monitor I
+24V Monitor I (Connector A - Pin S) is monitored to assure a proper +24 volt DC level.
Typical Connection: Power Supply +24VDC or Controller +24VDC Output.
2.1.8 +24V Monitor II
+24V Monitor II (Connector B - Pin R) is monitored to assure a proper +24 volt DC level. This input can optionally be used
to monitor a +12VDC supply (detector power) if the 24V-2 to 12VDC feature is enabled.
Typical Connection: Power Supply +24VDC, Controller +24VDC Output, or Power Supply +12VDC.
2.1.9 24V Monitor Inhibit
+24V Monitor Inhibit input (Connector A - Pin n) is a logic level input used to disable monitoring of the +24V Monitor I and
+24V Monitor II inputs. Application of a True (Low) state to this input inhibits the operation of the +24 Volt Monitor and
sets the +24 Volt Monitor Inhibit bit (bit 60) of the Type 129 Frame to 1.
Typical Connection: Unterminated or tied to +24VDC.
2.1.10 Controller Voltage Monitor (CVM)
The Controller Voltage Monitor input (Connector A - Pin V) is a logic level input. This input must stay in a low state
(nominal 0 volts) for normal signal operation. When high or floating, the monitor will be in the fault condition. This input is
sometimes used by controllers to perform time of day flash operations. In this case, the 24V Latch jumper on the program
card cannot be installed for proper operation.
Typical Connection: Controller CVM Output
2.1.11 Type Select
The monitor operates as a Type 16 monitor with sixteen channels when the Type Select input (Connector A - Pin HH) is at
logic True (Low) state; otherwise it operates as a Type 12 monitor with twelve channels.
Type 16: When configured for Type 16 operation, 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. Type 16 operation is intended for
those applications in which there are three circuits per channel and the monitor channels have been wired in a one-to-one

Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL Page 9 of 58
correspondence with the load switches, as defined in Section 5.5.3, Paragraph 9 of the NEMA Traffic Controller Assemblies
Standards Publication TS 2-2003.
Type 12: When configured for Type 12 operation, each channel has the capability of monitoring a Green, a Walk, a Yellow,
and a Red field signal output at the Terminals and Facilities field terminals. Type 12 operation is intended for those
applications in which downward compatibility with 12 channel Conflict Monitor Units (CMU) conforming to NEMA Traffic
Control Systems Publication TS 1-1989 is required. All Port 1 communications errors are ignored when the monitor is
configured to operate as a Type 12 monitor.
Typical Connection: Logic Ground for Type 16 operation. Unterminated or tied to +24VDC for Type 12 operation.
2.1.12 Local Flash Status
The Local Flash Status input (Connector B - Pin c) is a logic level input. When this input is in the low state (nominal 0
volts), the monitor will transfer the Output Relay contacts to the fault state and set the Local Flash Status bit (bit 79) in the
Type 129 Frame to 1. At all other times, the Local Flash Status bit of the Type 129 Frame is set to 0.
Typical Connection: Police Panel flash switch and/or inside cabinet flash switch
2.1.13 Port 1 Disable
The Port 1 Disable input (Port 1 SDLC Connector - Pin 10) is a logic level input. When this signal is in the low state
(nominal 0 volts), the monitor will ignore Port 1 SDLC communications errors. Port 1 SDLC communications errors are
always ignored during type 12 operation.
Typical Connection: Unterminated when Port 1 SDLC communications will be used. Logic Ground when Port 1 SDLC
communications are not used in Type 16 operation.
2.1.14 Reset
The Reset input (Connector A - Pin BB) is a logic level input. When this input transitions to the low state (nominal 0 volts),
a fault reset is performed.
Typical Connection: Unterminated or tied to +24VDC. Should be used only for automated testing.
2.1.15 Cabinet Interlock
The monitor has two terminals internally connected to indicate the presence of the unit to external circuitry. These terminals
are identified as Cabinet Interlock A (Connector A - Pin CC) and Cabinet Interlock B (Connector A - Pin DD).
Typical Connection: Interlock circuitry that will not allow the cabinet to operate normally with the monitor removed.
2.2 OUTPUTS
2.2.1 Output Relay
The Output relay of the monitor has two sets of isolated Form C contacts. These relay contacts are capable of switching all
loads in the range from two milliamps at 18 volts DC to three amperes at 135VRMS AC.
The Normally Open (N.O.) contacts of the Output relay are the contacts that are open when the unit is in the No Fault state
and all voltages are sufficient for proper operation of the Controller Assembly. The relay coil is energized in the No Fault
state.
Prior to the monitor transferring the Output relay contacts from the Fault state to the No Fault state, a Transition state with a
duration of 500 milliseconds occurs. During the Transition state the Output relay contacts are the same as the Fault state and
the monitor sets the Start-Up Flash Call bit (bit 80) of the Type 129 Frame to 1. At all other times the Start-Up Flash Call bit
of the Type 129 Frame is set to 0.
Typical Connection: One set of contacts is used to control the flash transfer relays the other is usually used to apply stop
timing to the controller.
2.2.2 Start Delay Relay
The Start-Delay relay has one set of Form C relay output contacts. These relay contacts are capable of switching all loads in
the range from 2 milliamps at 18 volts DC to 3 amperes at 135VRMS AC.
The monitor includes a means of detecting a loss of AC Line power. Upon restoration of AC Line following a monitor
power loss, the Start-Delay relay maintains continuity between its Common and Normally Open contacts for a period of 2.0
±0.5 seconds. Following this 2.0 second time period, the Start-Delay relay enables continuity to occur between its Common
and Normally Closed contacts.
The operation of the Start-Delay relay normally results in the initiation of a start-up sequence within the Control Unit by
interrupting the AC Line input to the Control Unit.

Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL Page 10 of 58
Typical Connection: The Common and Normally Closed contacts are used to route AC power to the controller.
2.3 PROGRAMMING CARD
This monitor uses a standardized programming card for channel compatibility (permissives), minimum flash time, per
channel Minimum Yellow Change Disable, CVM latch, and 24 volt monitor latch. Programming of this card is
accomplished through the use of soldered wire jumpers. The programming card plugs into the monitor through a slot in the
front panel. The monitor is constructed with card guides to ease the insertion of the programming card. The programming
card includes card ejectors to ease removal of the programming card. The edge of the programming card is flush with the
surface of the front panel when it is properly seated in the programming card slot of the monitor. The PRGM CARD LED
will illuminate if the programming card is not properly seated while power is applied.
Programming cards supplied by Reno A&E have an integral serial EEPROM which can store the other settings for the
monitor which are not programmed using soldered jumpers.
See Section 3.5 for programming card connector pin assignments.
2.3.1 Channel Compatibility
The monitor requires programming action to provide compatibility between channels.
The programming card has 120 pairs of holes for channel compatibility programming jumpers. The 120 jumper hole pairs
are logically labeled for easy identification of the jumper holes by channel pairs. A soldered wire jumper in a jumper hole
pair defines a pair of channels as permissive or compatible.
2.3.2 Minimum Flash
The programming card has four pairs of holes for minimum flash programming jumpers. The four jumper hole pairs are
logically labeled for easy identification of the jumper holes in binary weighted fashion. A soldered wire jumper in a jumper
hole pair adds that designated input value to the binary weighted sum. Per the NEMA TS 2 standard, the actual value used is
the binary weighted sum plus one.
2.3.3 Minimum Yellow Change Channel Disable
The programming card has sixteen pairs of holes for Minimum Yellow Change Disable programming jumpers. The sixteen
jumper hole pairs are logically labeled for easy identification of the channel numbers. A soldered wire jumper in a jumper
hole pair disables Minimum Yellow Clearance monitoring for that channel. Typically, all pedestrian channels should have
these jumpers installed.
2.3.4 Voltage Monitor Latch
The programming card has two pairs of holes for latch programming jumpers. The two jumper hole pairs are logically
labeled for easy identification of the +24 Volt Latch and CVM Latch. A soldered wire jumper in a jumper hole pair causes
that fault condition to be latched.
2.3.5 Serial EEPROM
The programming card contains a serial EEPROM. This device is not called for in the NEMA TS-2 specification and is only
compatible with other Reno A&E monitors. The programming card is interchangeable with other manufacturer’s
programming cards for the programming of the standard features. Reno A&E has provided the serial EEPROM as a way of
copying the other programming settings from one monitor to another monitor. Using a non-Reno A&E programming card in
this monitor will result in the monitor not being able to store the other programming settings for copying to other Reno A&E
monitors. See Section 2.4.10 for additional information on how data stored in the serial EEPROM is used.
2.4 FEATURES
2.4.1 Monitor Power Failure
The monitor responds to a Power Failure by entering a non-latching flash state. The monitor responds to a Power Failure
whether it is the result of the over-current protection device operation, failure of the monitor power supply, or absence of
proper operating AC Line voltage as defined below.
The operating AC Line input is considered to be On if the voltage level is greater than 98VRMS AC and it is considered to be
Off if the voltage level is less than 89VRMS AC. The hysteresis from the Off state to the On state or vice versa is at least
3VRMS AC.
The monitor responds to Power Failure as follows:
1) If the AC Line input is Off for 450 milliseconds or less, the monitor continues to operate as though the AC Line had
remained On. The Output relay contacts do not transfer to the fault condition during this interval. The Start-Delay
relay maintains continuity between its Common and Normally Closed contacts.