EDI CMU-212 User manual

THIS MANUAL CONTAINS TECHNICAL INFORMATION FOR

THE CMU-212 AND CMUip-212 SERIES ITS CABINET MONITOR UNIT.

Firmware Version 2.5 (vXX25)

REVISION: JUNE 2019

pn 888-0212-001

CMU(ip)-212

ITS Cabinet Monitor Unit

Operations Manual

- NOTE -

EDI ECCOM SOFTWARE MUST BE UPDATED TO VERSION 4.2 OR HIGHER.

EDI MONITORKEY SOFTWARE MUST BE UPDATED TO VERSION 2.4 OR HIGHER.

EDI SOFTWARE IS AVAILABLE AT WWW.EDITRAFFIC.COM

THE CMU-212 SERIES CABINET MONITOR UNIT IS DESIGNED AND

MANUFACTURED IN THE USA BY EBERLE DESIGN INC.

PHOENIX, ARIZONA.

EDI IS CERTIFIED TO ISO 9001:2015 QUALITY SYSTEMS STANDARDS.

INFORMATION CONTAINED HEREIN IS PROPRIETARY TECHNICAL INFORMATION

OF EBERLE DESIGN INC. PUBLICATION, REPRODUCTION OR USE IN WHOLE OR

PART IS NOT PERMITTED EXCEPT UNDER TERMS AGREED UPON IN WRITING.

U.S. Pat. No. 7,246,037

Canadian Patent No. 2,574,101

U.S. Pat. No. 9,460,620

U.S. Pat. No. 10,262,531

MAINTENANCE NOTE

THIS EBERLE DESIGN INC. CABINET MONITOR UNIT HAS BEEN

CAREFULLY INSPECTED AND TESTED TO ENSURE PROPER OPERATION.

IT IS RECOMMENDED THAT THE CABINET MONITOR UNIT BE TESTED AT

LEAST ANNUALLY TO ENSURE PROPER OPERATION AND COMPLIANCE

WITH FACTORY SPECIFICATIONS.

Table of Contents

Section 1 GENERAL ......................................................................................................... 1

1.1 Overview ................................................................................................................ 1

1.2 Channel Configuration............................................................................................ 1

1.3 Auxiliary Monitor Unit ............................................................................................. 1

1.4 CMU-212 Programming.......................................................................................... 2

1.5 Detailed CMU Status.............................................................................................. 2

1.5.1 ECcom Software Interface ............................................................................ 2

1.5.2 Auxiliary Display Unit .................................................................................... 2

1.6 Serial Bus #1.......................................................................................................... 3

1.6.1 Serial Bus #1 Message Types....................................................................... 3

1.7 Serial Bus #3.......................................................................................................... 3

1.7.1 Serial Bus #3 Message Types....................................................................... 3

1.8 Failed State Action (LFSA, LFSA-R, NFSA) ........................................................... 3

1.8.1 Exit From FSA............................................................................................... 4

Section 2 MONITOR FUNCTIONS .................................................................................... 5

2.1 Cabinet Power Supply Monitor ............................................................................... 5

2.2 Conflicting Channels Monitor.................................................................................. 5

2.3 Serial Bus Monitor.................................................................................................. 5

2.3.1 Serial Bus #1 Error........................................................................................ 5

2.3.2 Serial Bus #3 Error........................................................................................ 5

2.4 Type 62 FSA Message........................................................................................... 6

2.5 Lack of Signal Inputs Monitor ................................................................................. 6

2.6 Multiple Input Monitor ............................................................................................. 6

2.7 Yellow Clearance Monitor....................................................................................... 6

2.8 Yellow Plus Red Clearance Monitor ....................................................................... 7

2.9 Local Flash Status.................................................................................................. 7

2.9.1 Local Flash Status Recovery......................................................................... 7

2.10 Circuit Breaker Trip Status ................................................................................... 7

2.11 Flasher Unit Output Failed Alarm.......................................................................... 7

2.12 CMU Power Failure .............................................................................................. 7

2.12.1 AC+ RAW Level Sense ............................................................................... 8

2.12.2 Power Interrupt ........................................................................................... 8

2.12.3 Power Recovery.......................................................................................... 8

2.12.4 Power Up .................................................................................................... 8

2.12.5 Minimum Flash Interval ............................................................................... 8

2.13 Field Output Check............................................................................................... 8

2.13.1 Field Check Mode ....................................................................................... 8

2.13.2 Field Check Status ...................................................................................... 9

2.14 Diagnostic Error ................................................................................................... 9

2.14.1 Ram Memory Diagnostic............................................................................. 9

2.14.2 Nonvolatile Memory Diagnostic ................................................................... 9

2.14.3 Datakey Memory Diagnostic........................................................................ 9

2.14.4 Internal MPU Monitor .................................................................................10

2.15 Recurrent Pulse Detection...................................................................................10

2.15.1 Recurrent Pulse Detection Disable.............................................................10

2.16 Flashing Yellow Arrow (FYA) Protected-Permissive Monitoring ...........................11

2.16.1 FYA Configuration......................................................................................11

2.16.1.1 Protected Turn Channel ....................................................................11

2.16.1.2 Permissive Turn Channel..................................................................11

2.16.1.3 Opposing Through Channel ..............................................................11

2.16.2 Configuring the CMU-212 Fault Parameters For FYA.................................11

2.16.2.1 Conflict .............................................................................................12

2.16.2.2 Red Fail ............................................................................................12

2.16.2.3 Dual Indication ..................................................................................13

2.16.2.4 Minimum Yellow Clearance...............................................................13

2.16.2.5 Yellow Plus Red Clearance...............................................................13

2.16.3 Red and Yellow Input Enable .....................................................................13

2.16.4 Flash Rate Detection..................................................................................13

2.16.5 FYA Yellow Trap Conflict Detection............................................................14

Section 3 INPUT SIGNALS ..............................................................................................15

3.1 Field Signal Inputs.................................................................................................15

3.2 Load Switch Current..............................................................................................15

3.3 PDA Control Signal Inputs.....................................................................................15

3.3.1 Local Flash Status .......................................................................................15

3.3.2 Main Contactor (MC) Coil Status..................................................................15

3.3.3 Main Contactor (MC) Secondary Status .......................................................15

3.3.4 FTR Coil Drive Status ..................................................................................16

3.3.5 Circuit Breaker (CB) Trip Status ...................................................................16

3.3.6 Front / Rear Door Switch..............................................................................16

3.4 Monitor Interlock....................................................................................................16

3.5 External Test Reset input ......................................................................................16

3.6 Serial Bus #1 Address Inputs ................................................................................16

3.7 Serial Bus #1 Disable input ...................................................................................17

3.8 PDA Temperature .................................................................................................17

Section 4 FRONT PANEL DESCRIPTION .......................................................................18

4.1 Indicators ..............................................................................................................18

4.1.1 Power Indicator ............................................................................................18

4.1.2 24VDC FAIL Indicator ..................................................................................18

4.1.3 12VDC FAIL Indicator ..................................................................................18

4.1.4 CONFLICT Indicator ....................................................................................18

4.1.5 LACK OF SIGNAL Indicator .........................................................................18

4.1.6 MULTIPLE Indicator.....................................................................................18

4.1.7 CU / LOCAL FLASH Indicator ......................................................................18

4.1.8 CLEARANCE Indicator ................................................................................18

4.1.9 FIELD CHECK Indicator...............................................................................18

4.1.10 SB #1 ERROR Indicator.............................................................................19

4.1.11 SB #3 ERROR Indicator.............................................................................19

4.1.12 DIAGNOSTIC Indicator ..............................................................................19

4.1.13 SB #1 RX Indicator.....................................................................................19

4.1.14 SB #3 RX Indicator.....................................................................................19

4.2 Terminal Port.........................................................................................................19

4.3 Reset Button .........................................................................................................19

4.4 Datakey.................................................................................................................19

Section 5 SPECIFICATIONS............................................................................................20

5.1 Electrical ...............................................................................................................20

5.2 Timing ...................................................................................................................20

5.3 Mechanical............................................................................................................21

5.4 Environmental .......................................................................................................21

Section 6 CONNECTOR ASSIGNMENTS........................................................................22

6.1 Main DIN Connector..............................................................................................22

6.2 EIA-232 Connector................................................................................................22

6.3 CMUip-212 Ethernet LAN Port ..............................................................................23

6.3.1 Ethernet LAN Cable .....................................................................................23

CMU-212 Cabinet Monitor Unit

Operations Manual

Eberle Design Inc. Page 1

Section 1

GENERAL

1.1 OVERVIEW

The model CMU-212 Cabinet Monitor Unit (CMU-212) is the principle part of the ITS Traffic

Control Cabinet Monitoring System. It is resident in the Power Distribution Assembly and

communicates with an Auxiliary Monitor Unit (AMU) located in each Output Assembly via

Serial Bus #3. The role of the CMU-212 is to query various cabinet conditions and, if the

application requires action, the CMU-212 will transfer control from the Advanced Traffic

Controller (ATC) to a flashing control mode. Applications include the detection of, and

response to, improper and conflicting signals and improper operating voltages in a cabinet

assembly caused by malfunctions of the (ATC), load switches, or miss wiring of the cabinet.

The communications between the ATC and the CMU-212 via Serial Bus #1 plays an

integral role in ensuring safe and proper operation of the cabinet equipment as well as

providing important diagnostic functions used for trouble shooting malfunctioning

equipment.

The Eberle Design CMU-212 meets with or exceeds all specifications outlined the

ASHTO/ITE/NEMA Intelligent Transportation System (ITS) Standard Specification for

Roadside Cabinets Version 01.02.17b document.

1.2 CHANNEL CONFIGURATION

The CMU-212 can be configured to monitor up to 28 physical load switch channels of three

inputs per channel. An additional four virtual channels can be programmed to provide a

total of 32 logical channels. Each channel is comprised of a Red / Don’t Walk input, a

Yellow input, and a Green / Walk input.

1.3 AUXILIARY MONITOR UNIT

The Auxiliary Monitor Unit (AMU-214) provides the CMU-212 with voltage and current

measurements from each installed Output Assembly. The AMU-214 has the capability to

measure and report field terminal voltages for fourteen channels of three inputs per channel

and load currents for fourteen channels. The AMU-214 is also compatible with a six

position Output Assembly. The AMU is configured by its output assembly address. This

address is set by a jumper plug located on the rear of the output assembly. For further

information concerning the AMU-214, see the Eberle Design AMU-214 Operations

Manual (pn 888-0214-001).

The AMU-214 address assignment specifies the physical arrangement of the Output

Assemblies. This defines the number of contiguous channels that the CMU-212 is

monitoring. An AMU-214 assigned as a 14 channel unit must be addressed as AMU #1

with AMU #2 reserved, or as AMU #3 with AMU #4 reserved. The following table shows the

ten possible cabinet configurations:

CMU-212 Cabinet Monitor Unit

Operations Manual

Eberle Design Inc. Page 2

AMU #1

AMU #2

AMU #3

AMU #4

Monitored Channels

reserved

none

None

1 thru 14

reserved

1 thru 28

reserved

None

1 thru 20

reserved

1 thru 26

none

None

1 thru 6

none

None

1 thru 12

None

1 thru 18

1 thru 24

none

reserved

1 thru 20

reserved

1 thru 26

The ATC must verify that all output assemblies being driven by a Serial Interface Unit

(SIU) are being monitored by an AMU-214 and that the AMU-214 is enabled by the

programming in the CMU-212. Failure to provide this check may result in

unmonitored load switch outputs. This could occur as a result of improper configuration

of the cabinet, improper address assignment for one or more AMU-214 units, improper

address assignment for one or more SIU units, or improper programming of the ATC.

1.4 CMU-212 PROGRAMMING

The CMU-212 is individually configured using a removable nonvolatile memory device

called a Datakeytm (Datakey is a registered trademark of Datakey Electronics, Inc.). The

Datakey replaces the mechanical jumper or diode based program card used in

conventional signal monitors and provides an electronic method of programming the CMU-

212. The Datakey contains a nonvolatile prom device that is read by the CMU-212. The

Datakey itself is programmed by a separate programming device using a Personal

Computer program such as the Eberle Design MonitorKey product. See the Eberle Design

MonitorKey Operations Manual (pn 888-1212-001) for further details.

The Datakey is interoperable with any CMU-212 meeting the requirements of the

ASHTO/ITE/NEMA Intelligent Transportation System (ITS) Standard Specification for

Roadside Cabinets Version 01.02.17b.

1.5 DETAILED CMU STATUS

1.5.1 ECCOM SOFTWARE INTERFACE

The front panel display of the CMU-212 provides limited operational status. Detailed status

is obtained through the front panel EIA-232 port (CMU-212) or optional Ethernet port

(CMUip-212) using Eberle Design ECcom Signal Monitor Communications software

running on a personal computer. The ECcom software provides access to real time monitor

data such as current field signal status, field terminal voltages, cabinet control voltages,

channel load current status, temperature, and fault status. Historical event logs and signal

sequence logs are also provided. See the EDI ECcom Operation Manual (pn 888-1000-

001) for further details. The ECcom Signal Monitor Communications software can be

obtained from the Eberle Design web site at www.EDItraffic.com.

1.5.2 AUXILIARY DISPLAY UNIT

The Eberle Design Auxiliary Display Unit (ADU) is a display module that provides an

enhanced user interface for the ITS Cabinet Monitor Unit (CMU-212) system. The Auxiliary

Display Unit is intended to mount into a 1U space of the 19 inch rack of an ITS Cabinet.

The ADU communicates with the CMU-212 via Serial Bus #3. See the ADU Operation

Manual (pn 888-0217-001) for details.

CMU-212 Cabinet Monitor Unit

Operations Manual

Eberle Design Inc. Page 3

1.6 SERIAL BUS #1

Serial Bus #1 provides a communication path between the CMU-212 to the ATC. The

communications between the ATC and the CMU-212 plays an integral role in ensuring safe

and proper operation of the cabinet equipment as well as providing important diagnostic

functions used for trouble shooting malfunctioning equipment. Standardized

communications can be broken into three categories; real time and latched fault status,

configuration verification, and malfunction detection and diagnosis.

Messages are defined that allow the ATC and the CMU-212 to perform redundant checks

on each other. The ATC has access to all CMU-212 information including field signal input

status, permissive programming, and fault status. This gives the ATC the capability to

provide a backup monitoring function and make enhanced event logging, remote

intersection monitoring, and remote diagnostics feasible. Similarly, the CMU-212 receives

information from the ATC that corresponds to the output commands to the load switches.

This data allows the CMU-212 to better respond to and diagnose fault situations.

1.6.1 SERIAL BUS #1 MESSAGE TYPES

The CMU-212 is compatible with the following message types:

Type 60 Module Identification Command / Type 188 Module Identification Response

Type 61 Load Switch Drivers Command / Type 189 CMU Status Response

Type 62 Set FSA Command / Type 190 FSA Response

Type 65 Get CMU Configuration Command / Type 193 CMU Configuration Response

Type 66 Time and Date Broadcast Command

Type 67 Load Switch Drivers Command / Type 195 CMU Short Status Response

1.7 SERIAL BUS #3

Serial Bus #3 is used to transfer data from a maximum of four AMU-214 units to the CMU-

212. The CMU-212 will poll each enabled AMU-214 for its voltage and load current data

every 20 milliseconds. The CMU-212 then maps the retrieved data to the proper logical

channel and evaluates the state of the field signals for fault conditions. The CMU-212 is

compatible with AMU-214 units configured for 6-channel operation or 14-channel operation.

1.7.1 SERIAL BUS #3 MESSAGE TYPES

The CMU-212 is compatible with the following message types:

Type 1 AMU 6 Status Command / Type 129 AMU 6 Status Response

Type 2 AMU 14 Status Command / Type 130 AMU 14 Status Response

Type 128 Negative Acknowledge Response

1.8 FAILED STATE ACTION (LFSA, LFSA-R, NFSA)

When triggered by the detection of a fault condition that exists longer than the minimum

defined period, the CMU-212 will enter the Failed State Action (fault) mode causing the

OUTPUT relay to de-energize and the contacts on the OUTPUT NO pins to open. The

cabinet assembly should be wired such that the opening of the OUTPUT NO relay contacts

CMU-212 Cabinet Monitor Unit

Operations Manual

Eberle Design Inc. Page 4

will cause an automatic switching of the field signal outputs from normal operation to

flashing operation.

Only Unit Reset from the Reset Button or EXTERNAL RESET TEST input will reset the

CMU-212 from a LATCHED FAILED STATE ACTION (LFSA). Only a Unit Reset from the

Reset Button or EXTERNAL RESET TEST input or a CMU-212 Power Fail will reset a

LATCHED RESETTABLE FAILED STATE ACTION (LFSA-R).

A NONLATCHED FAILED STATE ACTION (NFSA) will be reset if the fault conditions

causing the NFSA have been removed. An NFSA will last for the programmed Minimum

Flash time at a minimum.

Only one LFSA, LFSA-R or NFSA fault state will be set at any time.

1.8.1 EXIT FROM FSA

Prior to the CMU-212 transferring the OUTPUT NO contacts from the FSA state to the No

Fault state, a transition period of 500 milliseconds will occur. During the transition period

the OUTPUT NO contacts will be in the FSA state and the CMU-212 will set the Start-Up

Flash Call bit in the Type 189 Frame to 1.At all other times the Start-Up Flash Call bit of

the Type 189 Frame will be set to 0. This provides an early indication to the ATC that exit

from the FSA state is occurring and the start-up phases should be set.

CMU-212 Cabinet Monitor Unit

Operations Manual

Eberle Design Inc. Page 5

Section 2

MONITOR FUNCTIONS

2.1 CABINET POWER SUPPLY MONITOR

The CMU-212 will sense the Cabinet +24VDC and +12VDC power supply sources. The

CMU-212 will also sense the Cabinet +24VDC state in each Output Assembly as reported

by each AMU. Voltages equal to or greater than +22 Vdc and +11 Vdc respectively will not

cause a LFSA. Voltages at or less than +18 Vdc and +9 Vdc for 500ms or longer will cause

a LFSA. If the sensed voltage is less than +22 Vdc or +11 VDC for 200 ms or less, the

CMU-212 will not cause a LFSA. All other timing or voltage conditions may or may not

cause LFSA. A +24VDC failure or +12VDC failure during the programmed Minimum Flash

time or during a CMU-212 Power Failure will not cause a LFSA. The CMU-212 will report

the value of the +24 VDC and +12 VDC power supply sources in the Type 189 response

frame.

There is programming in the Datakey to disable +12 VDC power supply monitoring.

2.2 CONFLICTING CHANNELS MONITOR

For purpose of conflict determination, an active signal on either of the Green/Walk or

Yellow inputs associated with any of the 32 channels will be considered as that channel

being active. The Datakey will contain the permissive channel pair programming.

When any conflicting channels are detected as concurrently active for less than 200

milliseconds the CMU-212 will not cause a LFSA. When any conflicting channels are

detected as concurrently active for 500 milliseconds or more, the CMU-212 will cause a

LFSA. When any conflicting channels are detected as concurrently active for more than

200 milliseconds but less than 500 milliseconds, the CMU-212 may or may not cause a

LFSA.

2.3 SERIAL BUS MONITOR

The CMU-212 communicates with both Serial Bus (SB) #1 and #3. In SB #1 the CMU-212

is a Secondary device, polled by the ATC Primary device. On SB #1, the CMU-212 will

respond to the Serial Bus #1 Address defined by the ADDRESS 0 and ADDRESS 1 pins.

On SB #3 the CMU-212 is the Primary device, polling each AMU-214 Secondary device.

2.3.1 SERIAL BUS #1 ERROR

The CMU-212 will cause a FSA when a Type 61 or Type 67 Frame has not been received

from the ATC for greater than 1000 milliseconds. The first and second failures in a 24-hour

period will be a NFSA. The third failure in a 24-hour period will be a LFSA-R. If a CMU-212

Power Fail resets the LFSA-R, the SB #1 failure count will be reset to two, such that the

next SB #1 timeout results in a LFSA-R.

A SB #1 timeout failure during the programmed Minimum Flash time or during a CMU-212

Power Failure will not cause a FSA. The SB #1 Timeout function will be disabled if the SB

#1 DISABLE input is at a True (Low) state

2.3.2 SERIAL BUS #3 ERROR

The CMU-212 will cause a FSA when a Type 129 or Type 130 Frame has not been

received from each AMU for greater than 300 milliseconds. The first and second failures in

a 24-hour period will be a NFSA. The third failure in a 24-hour period will be a LFSA-R. If a

CMU-212 Power Fail resets the LFSA-R, the SB #3 timeout count will be reset to two, such

that the next SB #3 timeout results in a LFSA-R.

A SB #3 timeout failure during the programmed Minimum Flash time or during a CMU-212

Power Failure will not cause a FSA.

CMU-212 Cabinet Monitor Unit

Operations Manual

Eberle Design Inc. Page 6

2.4 TYPE 62 FSA MESSAGE

If the “N” bit is set in a Type 62 message, the CMU-212 will react by causing a NFSA. The

NFSA will remain until the receipt of a Message 62 with the “N” bit cleared or until the

CMU-212 is reset by a Unit Reset or CMU-212 Power Fail. The NFSA will last for the

programmed Minimum Flash time at a minimum.

If the “L” bit is set in a Type 62 message, the CMU-212 will react by causing a LFSA.

2.5 LACK OF SIGNAL INPUTS MONITOR

The CMU-212 will detect the absence of a required signal voltage on all the inputs of a

channel OR the absence of any required channel load current. For voltage purposes a

required signal on the Green OR Yellow OR Red inputs associated with a channel will be

considered as that channel being Voltage Active. For load current purposes a total channel

load current above the programmed threshold for a channel will be considered as that

channel being Current Active. When a channel is not Voltage Active OR Current Active for

less than 700 milliseconds, the CMU-212 will not cause a LFSA. When a channel is not

Voltage Active OR Current Active for greater than 1000 milliseconds, the CMU-212 will

cause a LFSA. When a channel is not Voltage Active OR Current Active for more than 700

milliseconds but less than 1000 milliseconds, the CMU-212 may or may not cause a LFSA.

The Current Sense Unit (CSU) monitor function is hardwired to the maximum of 28 physical

channels, thus Virtual Channels do not have CSU monitoring capability. The CSU monitor

function must be disabled for any physical channel that has an input remapped to a Virtual

Channel.

Lack of Signal Input monitoring will be disabled for all channels when the MC COIL

STATUS input is not active. There is programming in the Datakey to disable Lack of Signal

Input monitoring on a per channel basis.

Lack of Signal Input monitoring will also be disabled for any channel which has the DARK

CHANNEL MAP bit set to "1" in the Datakey programming for the DARK CHANNEL MAP

addressed by the DARK CHANNEL MAP SELECT bits in a Type 61 message.

2.6 MULTIPLE INPUT MONITOR

The CMU-212 will detect the presence of an active signal on two or more inputs of a

channel. When the presence of an active signal on two or more inputs of a channel is

detected for less than 200 milliseconds, the CMU-212 will not cause a LFSA. When the

presence of an active signal on two or more inputs to a channel is detected for 450

milliseconds or more, the CMU-212 will cause a LFSA. When the presence of an active

signal on two or more inputs to a channel is detected for more than 200 milliseconds but

less than 450 milliseconds, the CMU-212 may or may not cause a LFSA.

Multiple Input monitoring may anticipate and prevent a possible conflicting signal display in

the intersection in the event that a proceed signal on the current phase hangs up and is

constantly detected as active. An open or no load condition (i.e., burned-out bulb) may be

also detected as an active signal depending on the output impedance characteristics of the

load switch (i.e. load switch leakage current), and may cause a Multiple Input Fault.

Multiple Input monitoring will be disabled when the MC COIL STATUS input is not active.

There is programming in the Datakey to disable Multiple Indication monitoring on a color

combination basis (G+Y, Y+R, G+R) for each channel.

2.7 YELLOW CLEARANCE MONITOR

The CMU-212 will verify that the Yellow Change interval is at least 2.7 +/-0.1 seconds. The

Yellow Change interval consists of the duration of time in which the Yellow field signal input

is active in a sequence from Green to Yellow to Red. When the minimum Yellow Change

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