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Union Products Communication display Unit 6696 User's Manual

1. e he 8 character LED Display ID Code Display shows the currently stored End Unit ID code e g IDz85323 e The Function Menu Display continues showing the following message sequence e Union Switch amp Signal Inc by default or a customer specified character string e Version Revision X e Boot PROM Version REV X e RAM test passed e ROM test passed e EEPROM test passed e USC test passed e Boot ROM test passed e Self Test Complete passed e After completion of the above test sequence the CDU reverts to its top first function menu item where the Function Menu Display shows with the example ID code Change ID 85323 with the first digit flashing ready for input by the operator e f a power up diagnostic test fails this will be indicated as such and the power up sequence will halt Note the specific test that has failed and contact US amp S Customer Service at 1 800 652 7276 for technical assistance or warranty repair instructions oM 7063 07 97 2 6 SECTION II INSTALLATION 2 5 2 CDU Functional Check Perform the following basic steps to verify that the CDU is functioning correctly Obtain a known operational End Unit It may be operated within the locomotive without damage and no pressurized air is necessary Power up the CDU observe it completes its power on sequence and then enter the ID code of the End Unit into the CDU If the CDU is configured
2. SECTION II INSTALLATION 2 3 3 Antenna and Cable Installation Install the UHF antenna at least 6 from the edge of the locomotive roof and at least 12 from any other fixture on the roof Try to keep the cable run as short as possible If interference from a nearby transmitting antenna e g voice radio is likely to be a problem locate the antenna as far away as possible Affix the antenna cable in place and terminate it in a PL 259 UHF connector Use only a high quality low loss antenna cable such as RG 213 U 2 3 4 CDU Datalogger Connector All CDUs are equipped with a DATALOGGER port connector This is a 25 pin serial RS 232 C D type connector mounted on the rear panel Four of the 25 pins are used as listed in the table below DATALOGGER Connector Chassis Ground Shield Receive Data RX DATA Transmit Data TX DATA Signal Ground Table 2 4 CDU DATALOGGER Port Connections The connector is designed to operate as a DCE type serial port where pin 2 is used to receive data from a remote serial device and pin 3 is used to transmit data to a remote serial device This allows for the use of a straight through not a null modem type serial cable Note that Chassis Ground and Signal Ground are isolated from each other The serial communications parameters baud rate etc are configurable via a Diagnostic PC as described in Section IV of this manual 2 3 5 Event Recorder Connector For CDUs equipped with a circular Ev
3. 4 Messages are sent every 0 5 seconds or immediately upon change of any data 3 16 2 2 Data Transfer Protocol Messages are transmitted per the following format Message Byte Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Sync Byte Sync Byte Events 1 Events 2 Pressure CRC HIGH CRC LOW Bit Position 654 3210 1010 1010 1010 1010 Oabc defg Otuv wxyz Oppp pppp Comment AA Hex AA Hex Note 1 Note 2 Note 3 Note 4 Note 4 Refer to the following pages for a description of each individual bit assignment oM 7063 07 97 3 32 SECTION Ill OPERATION Description Always set to 0 EOT Dump Valve Status ie End Unit confirmation bit status Inactive Confirmation bit not set Active Confirmation bit set EOT Type One Way Rear EOT Unit Two Way Rear EOT Unit HVM Light Status HVM Light OFF ie not flashing HVM Light ON ie flashing EOT Telemetry Battery Status Battery OK Battery status is WEAK or REPLACE EOT Message Status Regular 0 5 second message New message just received from EOT EOT Moving Status EOT is stopped EOT is moving including forward and reverse Rear to Front Radio Communications R gt F communication is OK R gt F communication is not OK SM 7063 07 97 3 33 SECTION Ill OPERATION Note 2 Bit State Description 7 N A Always set to O t N A Always set
4. Code then LOW PRES etc The ALARM annunciator and related ID Code Display message will turn OFF when the condition is corrected The types of ALARM conditions are as follows 1 Low Pressure Alarm The Low Pressure Alarm is provided to the locomotive operator as a warning that the brake pipe pressure at the rear of the train has dropped below a specified threshold typically 45 psig Whenever the brake pressure drops below 45 psig configurable via the Diagnostic PC the ALARM annunciator will flash ON and the ID Code Display will show LOW PRES In addition the Brake Pressure Display will initially flash 5 times showing the current low pressure value 2 Valve Fail Alarm Two way End Units incorporate a valve fail detection circuit which checks the integrity of the components used to actuate main emergency air exhaust valve The status of the valve fail detection circuit is transmitted to the CDU in every regularly scheduled message and immediately upon detection of a valve drive circuit failure When a valve failure condition is received by the CDU the ALARM annunciator will flash ON and the ID Code Display will show VALVFAIL 3 No Air Alarm In order to conserve battery capacity some End Units automatically power themselves down after the brake pipe pressure drops below 5 psig for more than 5 minutes PC configurable Just prior to power down the End Unit transmits a final message indicating a NO AIR con
5. SECTION Ill OPERATION 3 4 2 Message Receipt Indicator in Pressure Display The right most decimal point in the Brake Pressure Display will blink ON briefly each time a valid message with the correct ID is received by the CDU This indicator is provided as an aid to the operator in determining if messages are being received from the End Unit 3 4 3 ID Code Display The primary purpose of this 8 character alpha numeric display is to indicate the currently entered EOT ID code This display also provides the operator with additional information regarding ALARM conditions and system operation When information other than the ID code is displayed it is shown by alternating the display between the current ID code and the specific alarm or system function These messages include Alarm Messages e LOW PRES The brake pipe pressure at the rear of the train has dropped below the low pressure threshold typically 45 psig e VALVFAIL The emergency brake valve drive circuitry in the End Unit may not be functional e NO AIR The End Unit has just powered down due to 0 psig for greater than 5 minutes e NOT ARMD The CDU has not been Armed to its respective End Unit oystem Information Messages e FORWARD Displayed in conjunction with the MOVING annunciator to indicate that the initial direction of last train car is in the forward direction e REVERSE Displayed in conjunction with the MOVING annunciator to in
6. Arming process must be completed within 6 seconds of the initial Request to Arm to be successful Figure 3 2 Arming Process oM 7063 07 97 3 21 SECTION Ill OPERATION 3 10 1 Description of Arming Process 1 The operator at the end of the train relays the End Unit ID code to the locomotive operator via voice radio The locomotive operator enters the ID code of the End Unit into the CDU see Viewing and Changing the ID Code Section 3 8 1 If the CDU has been disarmed or is not armed to the new ID code the ALARM annunciator will flash ON accompanied by 5 beeps from the sonalert and the ID Code Display will alternate between ID HHHHE and NOT ARMD In addition the Function Menu Display reads System is NOT ARMED The locomotive operator then alerts the operator at the end of train via voice radio to proceed with Arming The operator at the rear of the train momentarily presses the TEST button on the End Unit This causes a Request to Arm Message message containing the End Unit s ID code to be transmitted to the CDU When the CDU receives the Request to Arm Message it prompts the Cab operator for a response The Function Menu Display reads PRESS COMM ARM TO ARM for FIVE seconds accompanied by beeps from the sonalert If the locomotive operator presses the SET key during the 5 second window a Command to Arm message is transmitted to the End Unit When the End Unit receives the Command to A
7. Odometer Menu press lt Esc gt SM 7063 07 97 4 9 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 6 2 Set Wheel Diameter Submenu The screen below shows the current value of the locomotive wheel diameter US amp 8S End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Set Wheel Diameter Current value is 46 68 inches Esc go hack F4 quit program The factory default for the locomotive wheel diameter is 40 00 inches To change the wheel diameter value type in the numeric value of the wheel diameter in the range of 34 00 inches to 46 00 inches and press Enter To return to the Configure Odometer Menu press Esc oM 7063 07 97 4 10 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 Configure Data Logger To configure the Data Logger protocol and its associated transmission parameters select item 7 Configure Data Logger and press Enter The following screen showing the associated submenus will appear Protocol Baud Rate Bits per Character Parity Humber of Stop Hits To select an item from this submenu type in a menu item number and press Enter To return to the Main Menu press lt Esc gt 4 4 7 1 Set Protocol The screen below shows the current data logger protocol selection Set Protocol Current value is Event Recorder Protocol 41 Possible values are H Data Logger Protocol 1 Event Recorder Protocol qo hack it pro
8. Taa 4 14 44 9 GOnlgure Customer SING av 4 15 4 4 10 GConrgure Front Panel Menu Ava 4 16 44 11 Enable Automatic ATTE socis seede 4 17 4 4 12 Set Transmit Power Level sessen irta a a 4 18 4 4 13 Allow Changing Between One and Two Way Operation eeeeeeeess 4 19 4 4 14 Blanking the Function Menu Display During No Activity seeeesssseessss 4 20 oM 7063 07 97 V TABLE OF CONTENTS APPENDIX A SOFTWARE UPGRADES 2i reyes weedek ca dove iau pbr vico vado eut xa pe d rc Er zw isca cus A 1 A 1 GDU Soliware Upgrades sara GA Hn veces A 1 A 2 Cab Unit Flash Loader Program see ere oo ror rhe Rn er OI eU Eo Semet ae A 1 A3 UNG Toad exe vare A 1 A 4 Procedure for Downloading CDU Software Upgrades eeseseeeeeeeesssee A 2 LIST OF FIGURES amp ILLUSTRATIONS Figure 1 0 Two Way Telemetry oec vua uacuum ed gun dud Kon ER cV EM Su RAT erent Ra dna AE Aus d 1 1 Figure 1 1 Model 6696 CDU Features amp Front Panel Layout rrrrnnnrrnnnnnnnvvrnnnnnnnnrrrrnnnnnnnnnnnne 1 6 Figure 1 2 Model 6696 CDU Features Rear Panel View rrrrrrrnnrnernnrrnnnnvvnrrnnnnrrnnrnnnnnennnnnnn 1 7 Figure 1 3 Model 6696 CDU Features Top Internal View sese 1 8 Figure 1 4 CDU Model 6696 Functional Block Diagram cccccceccceeseeeeeeeeeeeeeeeeeeeeaneeeeeessaaes 1 9 Eigure 3 1 CDU Moael 6596 Front PELS OP 3 2 HAUGES 2 s agus digest E MS 3 21 LIST OF TA
9. and install whatever spade lug tab or other contact is required for the locomotive The shield wire s connects to the CDU chassis at the connector end cut the shield wire s at the locomotive end and leave unconnected The cables should be wired per the tables below For the Bayonet Twist Lock type CA connector the pin assignments and cable color codes are Pin Conductor Bayonet Twist Lock Type CA Connector RED 1 Axle Alternator Signal Input B RED 2 Direction A TL8 D Seenotes A 20 60PPRReun gt 0 0 Table 2 2 CDU Axle Alternator Connections Bayonet Twist Lock Type Connector Notes PPR Pulses Per Locomotive Wheel Revolution For 20 PPR operation retain jumper between pins D and E For 60 PPR operation cut jumper between pins D and E For the MS Threaded type connector the pin assignments and cable color codes are Pin Conductor MSThreaded Type Connector RED 1 Axle Alternator Signal Input B BLK4 Axle Alternator Signal Return D Seenotes 4 20 60PPRReun gt 0 Table 2 3 CDU Axle Alternator Connections MS Threaded Type Connector Notes PPR Pulses Per Locomotive Wheel Revolution For 20 PPR operation retain jumper between pins C and D e For 60 PPR operation cut jumper between pins C and D When routing the odometer cable from the axle alternator to the CDU ensure that it is kept clear of locomotive dirty noisy wiring SM 7063 07 97 2 3
10. backlit oM 7063 07 97 2 7 SECTION Ill OPERATION 3 0 CDU OPERATING INSTRUCTIONS This section provides detailed information on the CDU s various operating modes and functions and how each one is used 3 1 Purpose and Use of ID Code Each End Unit has a unique 5 digit numeric Identification Code ID Code assigned by the AAR Central Train Information System Clearinghouse The ID Code is programmed into each End Unit and is a part of every message it transmits This code is permanently marked on a label or plate mounted on the outside of the End Unit The ID code entered into the CDU must match the End Unit ID code before EOT messages can be received and displayed Likewise the End Unit will only accept and process commands from a CDU with the matching ID code ID Code Must Match LJ NJ O ARMED 030 ID 2485323 eo PRESSURE ua ed MOVING PARURE ALARM LOW FTOR BATTERY ST OPPEDI FAILURE Cab Unit CDU Model 6696 Typical End Unit 3 2 Radio Communication Channel Since all End Units transmit on the same radio channel frequency typically 457 9375 MHz the ID code is the only way the CDU can distinguish one End Unit from another In a similar fashion all CDUs transmit on the same radio channel frequency typically 452 9375 MHz and the End Unit relies on the ID code to distinguish between commands sent by the CDU Ensure the ID code entered into the CDU matches that of the End Unit installed on the respective tra
11. interest Similar to the odometer mode the distance displayed takes into account the state of the Reverser Handle so that at any point the distance indicated on the display is the net distance traveled When the count reaches 00000 the end of the train has reached the point where the locomotive was when the function started The sonalert will beep once to indicate that the calculated clearance point has been reached As the train proceeds past this point the display begins to increment again with a leading minus sign to indicate the clearance distance between the end of the train and the measuring point The Function Menu Display reads TL Distance HHHH ft Subsequent presses of the SET key will freeze unfreeze the display but the counter will keep counting until the function is terminated using the CANCEL key Press the CANCEL key to reset the Train Length Distance function and restart from Step 1 above or to terminate it and advance to another menu item If the MENU UP or MENU DOWN key is used to change from the Train Length function to another menu function before the measurement is complete the measurement will continue and the correct distance will be displayed when the operator returns to the Train Length menu Before the Train Length measurement can be considered valid the CDU must be calibrated using the Measured Mile method or by direct entry of the wheel size through the use of the Diagnost
12. momentarily pressing the COMM ARM key When the COMM ARM key is pressed the Function Menu Display shows WAITING FOR REPLY for 2 seconds Depending on the status of the reply one of the following will be displayed 1 If the Communication Test is successful the Function Menu Display shows COMM TEST OK for 2 seconds and then reverts to the currently active menu item In addition the Message Receipt Indicator in the Brake Pressure Display will blink ON to indicate that a valid message has been received by the CDU 2 If the Communication Test failed the Function Menu Display shows COMM TEST FAILED for 2 seconds and then reverts to the currently active menu item In this case the Message Receipt Indicator in the Brake Pressure Display will NOT blink ON since no valid message has been received by the CDU 3 15 AUTOMATIC COMMUNICATION TEST The CDU automatically checks the radio link on a periodic basis It sends a status update request message to the End Unit every 10 minutes The purpose is to test the front to rear radio link If the End Unit replies immediately no indications are displayed on the CDU front panel If a reply is not received the CDU send another request 15 seconds later If there is no response to this retry another transmission is made in 6 minutes If there is no response to this request a final transmission is made 15 seconds later Finally if the End Unit does not reply to this last request a F T
13. odometer measurement can be considered valid the CDU must be calibrated using the Measured Mile method or by direct entry of the wheel size through the use of the Diagnostic PC oM 7063 07 97 3 12 SECTION Ill OPERATION 3 8 4 Using the Train Length Distance Function Count Down to Zero oince a train can approach 2 miles in length it is not always practical for the locomotive operator to single handedly determine if the rear end of the train has cleared a siding entrance or track junction so that it will not interfere with the passage of another train or highway traffic The Train Length Distance function simplifies this task by indicating when the entire train has moved past a given point and how much clearance there is behind the train b To use the train length function press the MENU UP or MENU DOWN key until the Function Menu Display reads TL Distance press SET where TL refers to Train Length The locomotive operator now positions the front of the train at the junction or switch and presses the SET button The Function Menu Display reads TL Distance ft where is the current length of the train in the currently configured units feet or meters As the train proceeds past the initial starting point the displayed length will decrement in accordance with the distance being covered The display will always indicate the distance to go before the end of the train is clear of the point of
14. port 2 is being used The PC will display the progress of the download process as follows Cab Unit Flash Loader REV 1 Thu Jul 18 16 11 41 EDT 1996 Press a key at any time to quit this program Initiating target diagnostics Cab Unit Boot Prom REV 1 Thu Jul 18 9 37 47 EDT 1996 ROM test PASSED RAM test PASSED Erasing flash done Writing to flash records downloaded 6 Upon completion of the download the CDU will begin running the new upgrade software in the normal fashion just as it does on standard power up 7 Verify that the correct software revision is displayed on the CDU s Function Menu Display during the self test power on sequence e g Version REV 1 8 Unplug the serial cable from the DIAG connector The CDU is now ready for operation oM 7063 07 97 A 2
15. repeat selection To select an item from this menu type in a menu item number and press lt Enter gt To return to the Main Menu press lt Esc gt SM 7063 07 97 4 3 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 1 Set ID Code To read the currently stored ID code or modify the ID code without using the CDU Function Control Keys select item 1 Set Id Code from the Main Configuration Menu and press Enter The following screen showing the current ID will appear US amp S End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Set Id Code Current value is 85323 ee sc go hack quit program To modify the ID code type in a new 5 digit ID code and press Enter The new ID code will be updated on the PC screen and will also be displayed on the CDU s ID Code Display This menu item may be particularly useful when servicing a CDU with faulty Function Control Keys To return to the Main Configuration Menu press Esc SM 7063 07 97 4 4 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 2 Set One Way Protocol Type To read the current One Way protocol setting or modify the protocol select item 2 Set One Way Protocol Type from the Main Configuration Menu and press Enter The following screen showing the current protocol will appear US amp S End of Train System Diagnostic Unit Software 1 H Copyright 1795 Union Switch amp Signal Inc Set One Way Pro
16. sonalert beeper is adjustable in four 4 steps to suit the individual locomotive operator 1 To adjust the sound level press the MENU UP or MENU DOWN key until the Function Menu Display reads Change loudness of 4 where is the current volume level out of a total of four 2 To change the sound level press the T or 4 keys to raise or lower the output volume respectively The sonalert will beep once for each key press at the indicated sound level On power up the CDU always defaults to the maximum volume level setting 4 3 8 14 Setting the Display Panel Brightness The brightness of the LEDs comprising the CDU Front Panel are adjustable in seven 7 steps to allow the locomotive operator to compensate for different ambient light levels 1 To adjust the display brightness press the MENU UP or MENU DOWN key until the Function Menu Display reads Change brightness of 7 where is the current brightness level out of a total of seven 2 To change the brightness level press the T or 4 keys to increase or decrease the LED brightness respectively On power up the CDU always defaults to the maximum brightness level setting 7 oM 7063 07 97 3 19 SECTION Ill OPERATION 3 8 15 Performing a CDU Self Test This function allows the locomotive operator to repeat the CDU power on self test without having to power the unit OFF and back ON 1 To select the Self Test function press the MENU UP or M
17. to another it is desirable to Disarm the CDU so that it no longer has Emergency Brake control of the End Unit that is on the other train This can be done in the following two ways Method 1 Arming to 00000 1 This method requires the operator to enter an ID code of 00000 in the same manner as described oection 3 8 1 This is a reserved ID code used only for disarming purposes 2 When the operator presses the SET key the currently displayed ID code in the parameter storage EEPROM is replaced with 00000 3 Once the 00000 have been entered and saved press the COMM ARM key This will cause the CDU to extinguish the NOT ARMD alarm indication and in effect Arm to ID code 00000 Note that if the CDU is configured for Automatic Arming it cannot be Armed to 00000 Method 2 Using the Disarming Menu Function 1 The preferred method for disarming the CDU is to use the built in Disarming Menu Function This is selected by pressing the MENU UP or MENU DOWN key until the Function Menu Display reads Disarm press SET 2 When the SET key is pressed the CDU prompts the operator to confirm the Disarming process as follows Press SET to Confirm Disarm 3 When SET key is pressed again the CDU begins disarming itself and Function Menu Display briefly reads Disarming 4 Upon completion of the disarming process the Function Menu Display indicates System is NOT ARMED The ALARM indicator
18. to 1 U N A Always set to 1 V N A Always set to 1 W N A Always set to 1 X N A Always set to 1 y HOT Emergency CDU Emergency Switch Status 0 CDU Emergency Switch open released 1 CDU Emergency Switch closed active Z HOT Type One or Two Way Front Unit Always 1 for CDU 0 One Way type Front EOT Unit 1 Two Way type Front EOT Unit Note 3 EOT Pressure information Pressure range is 0 to 127 PSI 1 PSI resolution Bit 7 is always set to O bit 0 is the least significant bit LSB Note 4 The CRC is a 16 bit code computed ONLY from Data Bytes 3 4 and 5 the two Sync Bytes AA bytes are excluded from the CRC calculation The CRC is computed according the specifications of CRC CCITT as implemented in X MODEM CRC using the CCITT polynomial of 0x1021 The high byte of the CRC is transmitted first oM 7063 07 97 3 34 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 0 CONFIGURATION and DIAGNOSTICS A dedicated serial port labeled DIAG is located on the CDU s Rear Panel Assembly The port uses a standard 9 pin plug type RS 232 C D connector and interfaces to an IBM compatible PC via a straight through off the shelf 9 pin serial cable All CDU configuration and diagnostics are performed using the DIAG port in conjunction with Diagnostic Software running on a PC 4 1 Diagnostic Software The Diagnostic Software is a single program named diagunit exe supplied on a floppy disk The software can be ordered und
19. will flash ON accompanied by 5 beeps from the sonalert and the ID Code Display will alternate between ID 00000 and NOT ARMD This indicates that the CDU is no longer Armed and its ID code has been set to 00000 In addition the ARMED Status LED if equipped on the front panel will turn OFF for panels marked with ARMED or turn ON for panels marked with NOT ARMED SM 7063 07 97 3 18 SECTION Ill OPERATION 3 8 12 Scanning for Incoming ID Codes The CDU has the capability to display the ID code portion of all uncorrupted messages it receives 1 To view incoming End Unit ID codes press the MENU UP or MENU DOWN key until the Function Menu Display reads ID Scan HAH HHH HTH where are incoming End Unit ID codes 2 Each End Unit ID code is displayed for a minimum of 5 seconds If more than one ID code is received during this 5 second period each new ID code is displayed separated by a space from the one preceding it 3 If the message display becomes filled each new ID code will overwrite the oldest displayed ID 4 This is a configurable item via the Diagnostic PC and would typically not be used in the Cab but more likely by supervisors or dispatchers It is factory configured to be OFF to minimize the confusion to locomotive operators Note that the ID Scan function cannot be enabled if the CDU is configured for Automatic Arming 3 8 13 Setting the Sonalert Output Volume The sound level of the
20. 1 GENERAL OVERVIEW The DIGITAIR End of Train Telemetry System consists of a Communication Display Unit CDU mounted in the locomotive cab which communicates via UHF radio with an end of train End Unit mounted on the coupler of the last train car The CDU when operating in conjunction with an End Unit such as the DIGITAIR Model 6695 SBU provides the locomotive operator with information about the conditions at the rear of the train that are important to the operation of the train The CDU s major functions include e A digital display of the brake pipe pressure at the rear of the train e Anindication of motion of the last car moving stopped and its initial direction forward reverse e The End Unit battery status and other warnings about brake pipe pressure e he On Off status of the Highly Visible Marker HVM light if equipped on the End Unit e When operating in two way mode provides an Emergency braking function from the rear of the train The CDU can be configured to support optional functions such as e Adigital display of the auxiliary pressure if transmitted by dual pressure type End Units e Abuilt in odometer to display the distance traveled by the locomotive speed and or acceleration The CDU Model 6696 is compatible with all End Units employing existing protocols such as the American Association of Railroads AAR End of Train message protocol It meets or exceeds the guidelines of the AAR along with the Federal Railroa
21. 43 1DE0AE Bio va 3 3 344 FIRGON ME anc 3 4 Sor VED AUG DS 3 5 3246 ARMED Status EP OPA var 3 6 3 5 FUNGHON KEYS rS 3 7 3 6 EMERGENGY BRAKE SWICGH sun 3 8 TF SONER vr 3 8 3 8 OPERATION of CDU FUNCTION MENU ITEMS eene 3 9 3 8 1 Viewing and Changing the ID Code sess 3 9 3 8 1 1 Operation if Allow Changing Between One and Two Way ID Menu is Enabled 3 9 3 8 1 2 Operation of Change ID Code Display if Blank ID Menu During No Activity Iz pie 3 11 3 82 Entering INS Iram belt sireni io uet RAP ene d eee cavo nt ERE ia ra ER eun ebore UE sine 3 11 3 8 3 Measuring Distance Traveled Using the Odometer Count Up from Zero 3 12 3 8 4 Using the Train Length Distance Function Count Down to Zero 3 13 3 8 5 Calibrating the Odometer Using a Measured Mile seeeeeeesseseeses 3 14 3 8 6 Viewing the Locomotive Wheel Size esses 3 15 3 8 7 Changing the Locomotive Wheel Size from the Front Panel 3 15 3 0 0 VIEWING TEN ACCES ALON m E 3 16 3 8 9 Viewing the Train Speed xui etr xen Rr ENTE REN Rar E Henr wc d qi da vea adu 3 16 3 8 9 1 Setting and Using English or Metric Units ccccccceccssseeseeeeeeeeeeeeeeaseeaseeeeeeeeeeeesaaas 3 16 3 9 10 Display Se
22. ALARM condition as described in Section 3 12 4 and the Brake Pressure Display will show 0 psig WARNING If the Arming Security Feature is enabled in the CDU the Emergency Switch will be inoperative until the Arming sequence as described in Section 3 10 is performed The Emergency Switch will activate the Emergency Exhaust Valve of the End Unit whose ID Code is displayed on the CDU and to which the CDU is Armed In the event that the End Unit does not correctly respond to the emergency brake command the CDU automatically transmits retries of the command for a period of 2 minutes The CDU determines a failure by checking for a brake pipe pressure drop below 5 psig within 4 seconds of the initial emergency request During the 2 minute period the CDU will indicate one of the following 1 If the CDU is still receiving updates from the End Unit the Function Menu Display continues to flash EMERGENCY BRAKE INITIATED 2 f the CDU does not receive any updates from the End Unit within 15 seconds the Function Menu Display will steadily show EMERGENCY BRAKE INITIATED followed by a F to R FAILURE ALARM per Section 3 12 3 At the end of the 2 minute period the Function Menu Display will signal a failure by briefly indicating EMERGENCY BRAKE FAILED oM 7063 07 97 3 27 SECTION Ill OPERATION 3 14 COMMUNICATION TEST If radio communications problems are suspected the front to rear and rear to front radio links may be tested by
23. BLES Table l Installalior faris LP 1 4 Table 1 2 Diagnostic Software Diskette rrrrrrrrnnrrrnnnnnnnovornvrrrnnnnnnnrrnnnrrnnnnnnnnsrrnnnnrnnnnnnnnssnnnnn 1 4 Table 1 3 DU SPELE E E m mm 1 5 T ble21 CDU Power Connections crise da Eo Suv RE os Peur ub aO Vir EE kcu ec v DU FL S PRRUT a Fea RO DU eS 2 2 Table 2 2 CDU Axle Alternator Connections Bayonet Twist Lock Type Connector 2 3 Table 2 3 CDU Axle Alternator Connections MS Threaded Type Connector 2 3 Table 2 4 CDU DATALOGGER Port Connections rrrrrrvnnrrnnnnrrrrvvrnnnnnnnrrrrvnnnrnnnnnnrseeennnrnnnnnnnee 2 4 Table 2 5 CDU Event Recorder Connections cccccccccsssseeeceeeecceeeeeeeeeeeesseeaeeeeeeeesssaaaaeeeenees 2 4 Table 3 1 Quick Reference CDU Function Menus and Display Messages 3 4 Table 3 2 Quick Reference CDU Annunciator LEDS cccccccccceceeeeeeeeeeeeeeeeeeeeeeeeeeeneess 3 5 Table 3 3 Quick Reference CDU Function Keys rrrrvrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrnnnnnnnnnnnnnnnnnnnsnnnnnnn 3 7 Table 34 English or Meric UNS 4 3 16 SM 7063 07 97 vi SECTION INTRODUCTION 1 0 PURPOSE OF MANUAL This manual provides general information on the DIGITAIR End of Train Telemetry System and detailed information on the installation and operation of the Model 6696 Communication Display Unit CDU Refer to Service Manual SM 7064 for detailed Shop Maintenance information 1
24. CDU Model 6696 Functional Block Diagram SM 7063 07 97 1 9 SECTION II INSTALLATION 2 0 INSTALLATION OF THE CDU This section details the installation of a CDU into the locomotive cab environment Two versions of CDU mounting arrangements are available 1 CDU mounted on a Mounting Tray 2 CDU mounted in an AAR Clean Cab Enclosure 2 1 General Description The locomotive equipment comprises a Model 6696 Communication Display Unit CDU Available accessories include refer to Table 1 1 for part numbers Complete Installation Kits Mounting Tray Antenna Cable Kit UHF Antenna Power Cable Assemblies Odometer Cable Assemblies Diagnostic Software Disk The Power and Odometer cables may be purchased separately or fabricated by the Railroad The locomotive antenna and antenna cable may be purchased from US amp S or supplied by the Railroad The cable must employ a PL 259 style UHF connector The antenna itself must be 1 4 wave whip or a low profile slot type antenna If desired the Railroad may supply a padlock to lock the CDU into position on the Mounting Tray 2 2 Preparing the Locomotive This section provides information on preparing a locomotive for installation of the CDU Once the locomotive has been equipped as described in this section the CDU may be installed as instructed in 2 4 Preparing the locomotive involves equipping it with either a Mounting Tray or AAR Clean Cab Enclosure and wiring the required electrical conne
25. ENU DOWN key until the Function Menu Display reads Self Test press SET 2 The Function Menu Display will show the following test sequence Self Test in progress Union Switch amp Signal Inc by default or a customer specified character string Version Revision X Boot PROM Version REV X RAM test passed ROM test passed EEPROM test passed USC test passed Boot ROM test passed Self Test Complete passed In the event that a test item has failed this will be indicated as such and can be noted and used by the locomotive operator to inform shop maintenance personnel 3 9 PERFORMING A LAMP TEST To perform a Lamp Test press the MENU UP and MENU DOWN keys simultaneously as indicated on the front panel artwork While the 2 keys are pressed all LED annunciators and all LED display segments will light to the level determined by the current brightness setting oM 7063 07 97 3 20 SECTION Ill OPERATION 3 10 ARMING the CDU to an END UNIT If the CDU is operating in the two way mode and is configured to use the Arming security feature it is necessary to first authorize the CDU to talk to the End Unit This helps prevent undesired external devices or people from intentionally or unintentionally activating the emergency braking function This process is called Arming An unauthorized or unarmed CDU can perform a Communications Link Test with a E
26. H Copyright 1995 Union Switch amp Signal Inc Set Low Pressure Threshold Current value is 45 psig Enter a new value _ The factory default setting is 45 psig When the brake pipe pressure drops below this value the CDU will indicate a Low Pressure ALARM as a warning to the locomotive operator To change the low pressure setting type in the new threshold value and press lt Enter gt To return to the Main Configuration Menu press Esc oM 7063 07 97 4 8 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 6 Configure Odometer To configure the odometer related functions for the type of units displayed English or Metric or to set the locomotive wheel diameter select item 6 Configure Odometer and press Enter The following screen showing the associated submenus will appear 1 Set Type of Units 2 Set Wheel Diameter L as hack _ ES F4 quit program To select an item from this submenu type in a menu item number and press Enter To return to the Main Menu press Esc 4 4 6 1 Set Type of Units Submenu The screen below shows the current Unit selection Set Type of Units Current value is English Units A gt Possible values are A English Units 1 Metric Units The factory default is English units To select English or Metric Units to be used for display when using the odometer related functions type in a menu item number and press lt Enter gt To return to the Configure
27. O R FAILURE ALARM is declared and displayed on the CDU front panel The Automatic Communication Test is performed in the time periods described to allow recovery from radio link black outs due to tunnels and certain terrain conditions The total time to the declaration of a F TO R FAILURE ALARM is 16 5 minutes oM 7063 07 97 3 28 SECTION Ill OPERATION 3 16 CDU DATALOGGER PORT The CDU supports two Data Logger Port protocol output formats These are configurable via the Diagnostic PC by selecting either Data Logger Protocol or Event Recorder Protocol see Section IV 3 16 1 Data Logger Format This section describes the data format output by the CDU in the case where it has been configured for Data Logger Protocol from the Diagnostic PC The CDU transmits a data message to the data logger serial port whenever an event occurs An event is defined as a change in certain indicators on the front panel display or when a radio transmission is received from the End Unit Each event produces an 11 character output from the port as defined below Time stamping of the message if required is provided by the event recorder device receiving and logging the data Character Position Description Start Character Line Feed ASCII Character ASCII Character ASCII Character ASCII Character ASCII Character ASCII Character ASCII Character ASCII Character Unit Transmission Indicator End Character Carriage Return A OOMNDUOA
28. RMED 2 panel marked with NOT ARMED and 3 no marking Armed Status LED not used Depending on the version of front panel equipped on the CDU this Green LED can be configured via the Diagnostic PC see Section IV to be turned ON or OFF as follows 1 3 Front Panel Marked ARMED In this case the LED is configured to turn ON to indicate that the CDU has successfully completed the ARMING process Its purpose is to provided the locomotive operator with a continuous positive indication that the Emergency Switch is enabled and ready for actuation if necessary Front Panel Marked NOT ARMED In this case the LED is configured to turn OFF when the CDU has successfully completed the Arming process Prior to Arming this LED will be ON to indicate that the CDU has NOT completed the ARMING process Its purpose is to provided the locomotive operator with a continuous positive indication that the Emergency Switch is disabled and will NOT transmit an emergency brake command The ID Code Display as always still shows NOT ARMD alternating with other information as a reminder that the CDU has not yet completed the Arming process Front Panel Not Marked Armed Status LED not used In this case the panel area normally used for the Armed or Not Armed marking is blank The LED is configured to be unused and will always be turned OFF The ID Code Display as always still shows NOT ARMD alternating with other information as a reminder tha
29. System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Measured Mile Menu Item Wheel Size Menu Item Change Wheel Size Menu Item Distance Menu Item Train Length Menu Item Train Lenyth Distance Menu Item Volume Menu Item Brightness Menu Item Accel Menu Item Speed Menu Item Scan Id Menu Item Disarm Menu Item Self Test Menu Item Secondary Pressure Menu Item 1 2 3 4 n 6 7 a 9 n 1 2 3 4 1 1 1 1 1 Enter a menu item number Esc go back Fi repeat selection To enable or disable any of the menu items type in the submenu item number and press lt Enter gt Each submenu item will show the current enable disable status To enable or disable a particular menu item type in the numeric value for ON or OFF respectively and press lt Enter gt Press the lt Esc gt key to return to the next higher level configuration screen SM 7063 07 97 4 16 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 11 Enable Automatic Arming For railroads who choose NOT to use the ARMING security feature Automatic Arming can be enabled via this menu item Enabling Automatic Arming in effect puts the CDU into an always armed mode In this case no operator is required at the rear of the train and the activation of the Emergency Switch will cause the transmission of an emergency brake command containing the currently entered ID Code To view the current setting or to enable disable Automatic Armin
30. UNION SWITCH amp SIGNAL ED se cuum Service Manual 7063 Digitair Model 6696 End of Train Communication Display Unit Installation E Operation E July 1997 An Ansaldo Affilated Company 1997 Union Switch amp Signal Inc Printed in USA TABLE OF CONTENTS INTRODUC TION vred 1 1 1 0 PURPOSE OF IAIN A I Ka 1 1 1 1 GENERAL OVERVIEW aa 1 1 1 11 GDUFUNGT NAEDESCEIPTON vurdere 1 2 1 2 Bague fom zig Ee 1 2 1 3 PATENTS AND TRADEMARKS pvr eee 1 3 1 4 R A I L TEAM AND TECHNICAL SUPPORT iere e EDS I e Ie pea letti ts 1 3 1 5 ODU ORDERING INFORMATION aa pe 1 3 LST Mounting and Hardware Option orto t rU esrb oou ER Pese aa 1 3 152 IPAS Used Tor installato aa 1 4 1 5 3 Diagnostic Solare DISK aa Gea 1 4 1 5 4 CDU Executable Software Disk rrrrrrvrnrnnnnnnnnnrrnnnnvnnnnnnnnnrovnnnnnnnnnnnnnsrnnnennnnnnnennssennnnnnnnnne 1 4 1 6 CDU SPECIFICATIONS arsen 1 5 vr SBUMMORCGOMPONEN Sveve 1 6 AGDER EE EE TREE NE tte 1 6 VZ GDU BE P c ued uae dasa dade aegis centre 1 7 1783 GDU MO ASSEMDIES La 1 8 1 8 CDU FUNCTIONAL BLOCK DIAGRAM 5 2 ttu nere 1 9 I INSTALLA HON cce 2 1 2 0 NSTAATION OF THE CDU sa pA 2 1 2 1 General Peso E TE EET 2 1 2 2 Preparing ne LOCOMOUY 6 enrere uva ovrt opui fonuncir a uus une tm a ES 2 1 221 Mouning Tray installation 3 vereinen ta ped I E eo ad 2 1 22 2 AAR Clean Gab Enclosures ua 2 2 2 3 NS ANG Ne CDU Go use 2 2 251 Power Gable MstalatiON sisenta eE GS 2 2 2 3 2 Odometer Axle Alternato
31. WND The 8 character ASCII field can be assigned to any message that is deemed worthy of recording however there are a number of characters that have specific definitions in normal operation During normal operation the character in position 2 is used to indicate the state of the telemetry battery Weak W H Replace The character in position 3 is used to indicate the following Marker Light Turn ON first occurrence only Replace Marker Battery R SM 7063 07 97 3 29 SECTION Ill OPERATION The character in position 4 is used to indicate the following Reply from End Unit is pending Reply from End Unit is pending Emergency Brake Application has been transmitted The End Unit is operating in One way mode The CDU is in two way mode but has not been armed ERE P Ho wow n The character in position 5 is used to indicate status of the End Unit brake valve drive circuitry as follows V Brake Valve Drive Circuit Failure The character in position 6 is used to indicate motion and direction Indicates Forward direction Indicates Reverse direction Indicates Moving after forward or reverse have occurred Indicates Stopped gt lt The characters in positions 7 8 and 9 are used indicate the current brake pressure value The range is from 0 psig leading zeros are space characters to 125 psig The Unit Transmission Indicator in position 10 is used to indicate whether the dat
32. active digit Once the desired train length has been selected press the SET key to store the new value The sonalert will beep once to signal the successful completion of the save of the new train length into the CDU s parameter storage EEPROM For example if a train length of 3650 feet has been entered the Function Menu Display will show New Train length 03650 ft 3 The units displayed feet or meters will be per the configuration selected via the Diagnostic PC as described in Section 3 8 9 1 The Train Length Distance counter function is now ready for use oM 7063 07 97 3 11 SECTION Ill OPERATION 3 8 3 Measuring Distance Traveled Using the Odometer Count Up from Zero 1 To use the Odometer press the MENU UP or MENU DOWN key until the Function Menu Display reads Odometer press SET 2 To measure distance press the SET key The Function Menu Display reads Odometer 00000 ft The 5 digit count is initially set to zero and as the train moves it begins counting the distance as determined by the axle alternator pulses 20 or 60 ppr and the state of the Reverser Handle The Reverser Handle affects the Odometer count as follows The initial position of the Reverser Handle defines the positive direction for the Odometer i e movement in this direction will increment the displayed distance If the Odometer count has started and the Reverser Handle is placed into the IDLE position permitting the train
33. ailroad may employ different color codes than those used by US amp S Refer to the connector pin assignments in this manual or consult US amp S Customer Service at 1 800 652 7276 for further technical assistance if required Cut the cable to the desired length Strip and install whatever spade lug tab or other contact is required for the locomotive The three conductor cable should be wired per the table below Bayonet CA Type Connector MS Threaded Type Connector 72 VDC Locomotive Power 72 VDC Locomotive Power NC o 72 VDC Locomotive Power Return 72 VDC Locomotive Power Return 13 6 VDC Mobile Power Ground 13 6 VDC Mobile Power E Not Used Note N C Not Connected N C 13 6 VDC Mobile Power 13 6 VDC Mobile Power Ground N C Table 2 1 CDU Power Connections 2 3 2 Odometer Axle Alternator Cable Installation Two standard Odometer Cables are available Each consists of a dual twisted pair individually shielded cable with either a 6 pin Bayonet Twist Lock type CA connector or 6 pin MS Threaded type connector on one end The other end is unterminated Non standard cables or those supplied by the Railroad may employ different color codes than those used by US amp S Refer to the connector pin assignments in this manual or consult US amp S Customer Service at 1 800 652 7276 for further technical assistance if required SM 7063 07 97 2 2 SECTION II INSTALLATION Cut the odometer cable to the desired length Strip
34. alogger port output message was the result of a change in CDU display status or as a result of a status update message received from the End Unit The event was the result of a change in CDU display status The event was the result of a status update message received from the End Unit A typical data logger message would be Re 748 meaning that 1 the Telemetry battery is low and will need to be replaced soon 2 the Marker Light has just come on 3 the brakepipe pressure is 74 psig 4 the event was initiated as the result of a spontaneous status update message from the End Unit or a status update message due to a communications test manual or automatic oM 7063 07 97 3 30 SECTION Ill OPERATION Defined ASCII Messages In addition to the above characters specific ASCII messages are transmitted by the Data Logger Port as follows 1 If the CDU has a valid ID number but has not been armed to this ID the message NOT ARMD is output to the Datalogger Port Until such time as the CDU is armed to the End Unit with this ID all subsequent outputs will carry the U in character position 4 2 f the CDU has declared a Rear to Front Communications Failure the following message is output to the Datalogger Port R gt F FAIL 3 If the CDU has declared a Front to Rear Communications Failure the following message is output to the Datalogger Port F gt R FAIL 4 If the End Unit powers down as a r
35. and be compatible with existing locomotive installations Two mounting configurations are available a Standard Mounting Tray style mount and an AAR Clean Cab Enclosure style mount The CDU is designed to be lightweight 9 pounds and incorporates a fold out carrying handle for transporting the unit to the locomotive or between locomotives oM 7063 07 97 1 6 SECTION INTRODUCTION 1 7 2 CDU Rear Panel The photo below shows a typical rear panel connector layout for the CDU Model 6696 AXLE ALT DATALOGR ER Figure 1 2 Model 6696 CDU Features Rear Panel View The CDU supports connectors on its rear panel for the following functions Power 72 VDC nominal locomotive power or 13 6 VDC nominal for mobile use Axle Alt Connects to locomotive s axle alternator for Odometer related functions Antenna Connects to roof mounted locomotive UHF antenna Datalogger Can be interfaced to an event recorder computer or serial printer Diag Connects to a PC serial port for diagnostic and configuration purposes Mounting hardware on the rear panel includes Screw Latch opring loaded latch secures the CDU to the Mounting Tray or AAR Clean Cab Enclosure Lock Bracket Provides a means for locking the CDU to the Mounting Tray using a padlock oM 7063 07 97 1 7 SECTION INTRODUCTION 1 7 3 CDU Major Assemblies The photo below shows a top view of the CDU with its cover removed exposing the major assemblies The unit has bee
36. arked with NOT ARMED Select menu item 2 LED IS UNUSED for use with unmarked Front Panels Press lt Esc gt to return to the Main Configuration Menu SM 7063 07 97 4 14 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 9 Configure Customer String During the power up sequence the CDU displays the currently stored Customer String To view or modify the customer string select item 9 Configure Customer String and press Enter The following screen showing the customer string will appear USAS End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Configure Customer String Current value is Union Switch amp Signal Inc ean Esc go back F4 quit program To modify the Customer Siring type in the desired alohanumeric string e g XYZ Railway Inc and press lt Enter gt To return to the Main Configuration Menu press lt Esc gt SM 7063 07 97 4 15 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 10 Configure Front Panel Menu As listed in Table 3 1 each CDU menu function can be enabled or disabled depending on specific Railway requirements When a Function Menu Item is disabled it will NOT appear in the Function Menu Display when the MENU UP or MENU DOWN key is pressed To view the Front Panel Menu items select item 10 Configure Front Panel Menu and press Enter The following screen listing the menu items will appear US amp S End of Train
37. cable to the Axle Alt connector on the CDU If applicable connect the CDU Datalogger Event Recorder cable to the Datalogger Event Recorder connector on the CDU g Connect the Antenna cable to the mating RF connector on the CDU Vee ff h N 2 4 3 Installing the CDU into an AAR Clean Cab Enclosure Slide the CDU into the enclosure from the back Engage the screw latch at the rear of the CDU Tighten the screw latch until the CDU is firmly in place Do not overtighten Connect the CDU Power cable to the power connector on the CDU If applicable connect the CDU Odometer cable to the Axle Alt connector on the CDU If applicable connect the CDU Datalogger Event Recorder cable to the Datalogger Event Recorder connector on the CDU g Connect the Antenna cable to the mating RF connector on the CDU 0 0 m A e oM 7063 07 97 2 5 SECTION II INSTALLATION 2 5 BRIEF OPERATIONAL TEST OF THE CDU Upon receipt of a new CDU it is recommended that the unit be briefly tested as described in this section to verify correct operation This is performed in conjunction with a known operational End Unit 2 5 1 CDU Power Up Sequence Upon CDU power up verify that the following display sequence is indicated on the CDU s Front Panel e he 32 Character LED Display Function Menu Display shows Self Test in progress accompanied by a beep tone All other displays should be off e The Brake Pressure Display shows three dashes
38. condary Air Pressure 3 eria eios einer dole tidied PEDE Eo Dou 3 17 com BEATE DU satin cH tania dapat cael atta rata ranetrannitiatiNitidsiacleetetas 3 18 3 9 12 Scanning for Incoming ID GOdES outer aen d oet beo nah i ai revo Peau en ax ax te bb uto ax Riu 3 19 3 8 13 Setting the Sonalert Output Volume serisi a 3 19 3 8 14 Setting the Display Panel Brightness rrnnnrnnnrrrnvnrrnnnnnnnnrvrnnnvrnnnnnnnnssvnnnnrrnnnnnnnsssnnnnn 3 19 9 9415 Penormingia CDW SEA TEST Lae 3 20 3 9 PERFORMING A LAMP TEST 4 3 20 3 10 ARMING the CDU to an END UNIT essseseeeeeernnenennnnn nnn 3 21 340 1 Description or AMMING PIOC SSav a a 3 22 3102 ATOMENE ArMING Mee o DT mor 3 23 Salt MOTOENINDIGATION se 3 23 312 ALARMINDICATIONS vvs 3 24 PN EOW BANA 3 24 3 12 2 Rear to Front Communications Failure R TO F FAILURE erronnnernrnnnnonnrnnnnnnnnnnnnnnn 3 25 3 12 3 Front to Rear Communications Failure F TOR FAILURE eesssee 3 25 ANS VAA 91910 81 1 EN ene sete ts wer ea pre tree Menten cr mee ment bores cp MERC ML C AU edd 3 26 SM 7063 07 97 iv TABLE OF CONTENTS 3 13 EMERGENCY BRAKE APPLICATION creciera E ductus en dte ne bed boe coetu cenas 3 27 9 14 GOMNMUNIGATION TEST sv 3 28 3 15 AUTOMATIC COMMUNICATION TEST eeeeeeeseeeeeenennnnnn nnm 3 28 slo ADU DATAEOGGERUPOR T vare 3 29 SIS Wate LOGGE ien E Hm 3 29 3162 Even Recorder Formal uvaner 3 32 3 16 2 1 Electrical Cn radlenSiUcs
39. count down to TL Distance 03650 ft zero Calibrate the Odometer using Measured Mile press SET a Measured Mile Press SET at End of Mile 00000 ft 4954 ft corrected to 5280 ft Measured Mile FAILED View the Locomotive Wheel Wheel Size 40 00 inches Size Change Wheel Size Wheel Size 40 00 press SET View the Train Acceleration Acceleration 000 mph min O View the Train Speed Speed 000 mph Disarm from a Specified End Disarm press SET Unit Press SET to Confirm Disarm Disarming System is NOT ARMED 12 View and Display All Incoming End Unit ID Codes Volume Change brightness 7 of 7 Annunciator Brightness 5 Self Test press SET Refer to Section 3 8 13 Table 3 1 Quick Reference CDU Function Menus and Display Messages 7 8 FR oM 7063 07 97 3 4 SECTION Ill OPERATION 3 4 5 LED Annunciators A separate bank of seven 7 rectangular LED annunciators are provided to alert and draw the attention of the locomotive operator to important conditions These are color coded Red or Green to indicate alarm or status conditions respectively In the case where additional information about a particular annunciator is required a corresponding message is displayed on the ID Code Display ID Code Display Union Switch amp Signal Inc Li 1 j O ARMED eo e ID 12345 e o casi E MARKER RTOF BE FTOR STOPPED Annunciator LEDs The
40. cs Clear Received Message Statistics Transmitter Tests Test Ram Test Rom Test EEProm Test USC Test Boot ROM Datalogger Port External Loopback Test Show Watchdog Timer Reset Count Glear Watchdog Timer Reset Count 1 2 3 4 D b 7 8 9 1H 11 12 peat selection F4 t program Select a diagnostic test from this menu by typing in a menu item number followed by lt Enter gt To return to the Main Menu press lt Esc gt The use of the Diagnostic Items is beyond the scope of this manual These are each described in detail in the CDU Shop Maintenance Manual SM 7064 4 4 Configuration Items Menu The Configuration Items Menu displays selections which allow CDU functions to be enabled or disabled and also allows customization of certain functions This section describes the purpose and use of each menu item as shown below in the Main Configuration Menu USAS End nf Train System Diagnostic Unit Software 1 8 Copyright 1995 Union Switch amp Signal Inc Set Id Code Set One Way Protocol Type Set Two Way Protocol Type Enable Two way Mode Set Low Pressure Threshold Configure Odometer Configure Data Logger Configure Armed Status LED Configure Customer String Configure Front Panel Menu Enable Automatic Arming Set Transmit Power Level Allow Changing Between One and Two Way in ID Menu Blank ID Menu During Mo Activity M 2 DS Ee m wn o5 s cn Cn ua ca al ke E EE Enter a menu item number _ Esc go hack Fi
41. ctions Note that some locomotives may already have this equipment installed 2 2 1 Mounting Tray Installation The Mounting Tray is typically located on the control stand and provides the CDU with a mechanical quick disconnect base for easy application and removal The Mounting Tray is affixed to the control stand as follows 1 Using a Mounting Tray as a template mark the control stand for drilling 2 Drill holes of 1 4 diameter 3 Attach the Mounting Tray to the control stand using appropriate bolts nuts and lockwashers supplied by the Railway oM 7063 07 97 2 1 SECTION II INSTALLATION 2 2 2 AAR Clean Cab Enclosure Installation of an industry standard AAR Clean Cab Enclosure in the locomotive is the responsibility of the Railway 2 3 Installing the CDU Cables This section details the installation of the Power and Odometer cables required to connect the CDU to the locomotive The cables and their respective part numbers are listed in Table 1 1 in the previous section 2 3 1 Power Cable Installation For most installations one of two types of power cable assemblies are used to connect the CDU to the locomotive DC power system One is a 5 pin Bayonet Twist Lock type CA connector and the other is a 4 pin MS Threaded type connector In both cases the cable assemblies are supplied with the connector ore mounted on one end of the cable with the other end left unterminated Non standard cables or those supplied by the R
42. cussuueac ouis sus et ape di ee exice ens etu saeua o eh e tdt ue etra ales 3 32 3 16 2 2 Data Transier T FOLOCOL surnet frem Jade naadde 3 32 IV CONFIGURATION and DIAGNOSTICS rnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnenevennnnnnnnnnnnnnnnnnnnennnenn 4 1 4 0 CONFIGURATION and DIAGNOSTIC S usted iue bac Earle tete Ur Eten ER 4 1 4 1 DENS SINT a dcus odi cede tut MEL bata prd toc E iE Art uet 4 1 4 1 1 Running the Diagnostic Software sseeeesesesssssssseeee nennen nennen 4 1 4 2 Mum P M M 4 2 4 3 DIAGNOSE NSIS oeren aea AE m 4 3 4 4 GContiguration ITEMS MENU iu cescao cu eunti eieae ios pn chat sux R EAE peu u Ens 4 3 4 4 1 Set ID Code 4 4 442 Se OneWa Pod arve 4 5 4495 OCT EVO POINT 4 6 444 Enable Two Way Mode uiii rre EIE ees RO eben ue desc entere hito x nudis sen o dUve mined 4 7 445 Set Low Pressure Threshold erit eodeni hard i e RES Sev aeai 4 8 44 0 COMMGUFE Odometer ua 4 9 4 4 6 1 Set Type of Units SUBMENU sisis E ERAR AERE TRE aa REN 4 9 4 4 6 2 Set Wheel Diameter Submenu ssseesesssssssssssseeee a e a aE nena 4 10 AAT Gommone Data LOE aure 4 11 4 4 7 1 Set Protocol 4 11 4472 SOL DOUG Hale spasere 4 12 44 713 Ser BIS Per Characlel Jarre 4 12 4 4 7 4 Set Parity 4 13 4 4 7 5 Set Number Of SOP BIES 2 ito i tcu rue duet ke atre matin ache etes oe gea eei aa Ei 4 13 44 8 COMMOUrE Armed Status LED oie in Deor b ER et bonus eoe Pixar a
43. d Administration FRA the Federal Communications Commission FCC Industry Canada IC and the Canadian Department of Communications DOC regulations LOCOMOTIVE LAST CAR n A UHF RFLINK di END UNIT BRAKE PRESS BATTERY STATUS VEHICLE mV Vic HVM STATUS B ODOMETER jt BRAKE PIPE AIR CAR MOTION INPUT OPT Mibi cid COMMS LINK TEST EMERGENCY ACTIVATION GO m Figure 1 0 Two Way Telemetry Functions oM 7063 07 97 1 1 SECTION INTRODUCTION 1 1 1 CDU FUNCTIONAL DESCRIPTION The CDU mounts in the locomotive cab it connects to an antenna mounted on the roof and to the DC power system 72 VDC nominal Separate connectors are provided for connection to the locomotive Axle Alternator odometer a Datalogging device and a Diagnostic computer Since the CDU incorporates all displays the warning beeper and all controls on its front panel it should be mounted where it is highly visible and within easy reach of the locomotive operator i e on the control stand or in a console The CDU transmits and receives data to from the End Unit using a UHF radio transceiver The transmitter frequency is typically 452 9375 MHz and the receiver frequency is typically 457 9375 MHz When the CDU receives a message from the End Unit it processes the information and displays it on various LED displays and annunciators The CDU is typically in the receive mode of operation ready to accept and display messages f
44. d wheel size falls within the permitted range the calibration passes and the sonalert will beep once to indicate that the measurement is complete For example the Function Menu Display reads 4954 ft corrected to 5280 ft The newly calculated wheel size is stored in the CDU s parameter storage EEPROM 4 However if the measurement is such that the calculated wheel size falls outside of the permitted range the calibration fails the sonalert will beep once and the Function Menu Display reads Measured Mile FAILED In this case the currently stored wheel diameter is retained SM 7063 07 97 3 14 SECTION Ill OPERATION 3 8 6 Viewing the Locomotive Wheel Size To view the currently stored wheel size diameter press the MENU UP or MENU DOWN key until the Function Menu Display reads Wheel Size inches where is the calculated locomotive wheel diameter based on the measured mile calculation or the value entered using the Diagnostic PC The allowable wheel diameter range is 34 00 inches through 46 00 inches The CDU is shipped with a default value of 40 00 inches If the CDU is configured for Metric Units the wheel size is displayed in millimeters mm 3 8 Changing the Locomotive Wheel Size from the Front Panel If the Configuration Item entitled Enable Change Wheel Size Menu Item is enabled the locomotive wheel size can be entered and stored using the Function Keys in a manner identical to changing
45. dicate that the initial direction of last train car is in the reverse direction e BATTWEAK Displayed in conjunction with the LOW BATTERY annunciator to indicate a weak battery condition in the End Unit e HEPLBATT Displayed in conjunction with the LOW BATTERY annunciator to indicate that the battery in the End Unit must be replaced at the next scheduled stop oM 7063 07 97 3 3 SECTION Ill OPERATION 3 4 4 Function Menu Display This 32 character alphanumeric display indicates the various menus items selected by pressing the MENU UP or MENU DOWN function keys It is also used to display temporary information resulting from actions performed by the operator All of the menu items except View and Change End Unit ID Code can be enabled or disabled via configuration using the Diagnostic PC to accommodate Railway specific needs these are all detailed in Section IV The table below lists the menu items in the order they are displayed with each press of the MENU DOWN function key when all menu items are enabled Configurable View and Change the End Unit Change ID 12345 New ID 12345 View Secondary Pressure Secondary Pressure 095 View and Change the Train Train Length 02400 ft press SET Length New Train length 03650 ft Measure Distance using the Odometer press SET Odometer count up from zero Odometer 00000 ft Measure Distance using the TL Distance Countdown press SET Train Length
46. dition When the CDU receives a NO AIR message from the End Unit the ALARM annunciator will flash ON and the ID Code Display will show NO AIR In addition the Brake Pressure Display will flash 3 dashes and then stay steady ON This indicates that the brake pipe pressure at the rear of the train in unknown since the End Unit is now in a powered down state 4 Not Armed Alarm If the Arming process has not yet been performed the CDU will alert the operator that it is in a Not Armed state and as such its Emergency Switch is disabled The CDU s ALARM annunciator will flash ON and the ID Code Display will show NOT ARMD In addition for CDUs equipped with the ARMED Status LED on the Front Panel this LED will be OFF as an additional reminder oM 7063 07 97 3 26 SECTION Ill OPERATION 3 13 EMERGENCY BRAKE APPLICATION To apply the emergency brakes at the rear of the train lift up the red switch guard and momentarily push the Emergency Switch upwards The switch is spring loaded and will return to the down position when released The CDU will immediately transmit an emergency brake command and its Function Menu Display will briefly show EMERGENCY BRAKE INITIATED When the End Unit receives the emergency brake command it will vent the brake pipe air at the rear of the train transmit a confirming message to the CDU and drop the pressure to 0 psig As the air pressure drops the CDU in turn will display a Low Pressure
47. e Rapid Action Information Link R A I L Team is comprised of a group of experienced product and application engineers ready to assist and resolve any technical issues concerning DIGITAIR End of Train equipment or any US amp S product Any questions regarding the contents of this Service Manual can be answered by contacting the R A I L Team toll free at 1 800 652 7276 or via Internet e mail at railteam switch com 1 5 CDU ORDERING INFORMATION The following ordering information can be used to select various configurations of the CDU Model 6696 Please contact US amp S Customer Service at 1 800 652 7276 or your US amp S Sales Representative for technical information pricing and additional sales information 1 5 1 Mounting and Hardware Options 1 CDU Mounting Options a Standard Mounting Tray Typically mounts on locomotive Control Stand b AAR Clean Cab Enclosure Industry standard radio enclosure c Custom Mounts per Railway requirements 2 Connector Styles Power and Axle Alternator a Bayonet Twist Lock ITT Cannon b MS Threaded Style Bendix Amphenol c MS Bayonet Style Bendix Amphenol 3 Front Panel ARMED Status LED Markings a No ARMED Status LED b Status LED Marked ARMED c Status LED Marked NOT ARMED oM 7063 07 97 1 3 SECTION INTRODUCTION 1 5 2 Parts Used for Installation Table 1 1 below lists parts used for installation which may be ordered separately from the CDU 116 5016 00 Table 1 1 In
48. e following conditions e No confirming message has been received from the End Unit 15 seconds after the EMERGENCY switch was activated e No confirming message has been received from the End Unit within approximately 6 minutes and 30 seconds after an Automatic Communication Test from the CDU When either of the above conditions occur the CDU will flash the F TO R FAILURE annunciator 5 times accompanied by beeps from the sonalert and will then remain ON If a confirming message is received in response to a press of the COMM ARM key manual communications test or after an Automatic Communication Test the F TO R FAILURE annunciator will turn OFF Note Front to Rear Communications problems may be caused by e Long tunnels e Wrong ID Code entered into the CDU e Discharged battery in the End Unit e Faulty End Unit antenna or receiver circuitry e Faulty CDU antenna or transmitter circuitry oM 7063 07 97 3 25 SECTION Ill OPERATION 3 12 4 ALARM Annunciator The ALARM annunciator operates in conjunction with the ID Code Display When a system alarm condition is initially sensed by the CDU it will cause the ALARM annunciator to flash 5 times together with a message on the ID Code Display indicating the nature of the alarm This is accompanied by beeps from the sonalert The ALARM annunciator will then remain ON and the associated message shown in the ID Code Display will alternate every 2 seconds with other existing information e g ID
49. ent Recorder connector the connector pin assignments are as follows Pin EventRecorderConnectr gt B Transmit Data TX DATA D Chassis SHIELD Table 2 5 CDU Event Recorder Connections oM 7063 07 97 2 4 SECTION II INSTALLATION 2 4 MOUNTING THE CDU This section details mounting the CDU onto the Mounting Tray or in the AAR Clean Cab Enclosure 2 4 1 72 VDC 12 VDC Power Selection Jumper JP1 The CDU can be powered from either the standard 72 VDC locomotive power system or a 13 6 VDC nominal power source such as an automobile lighter socket An internal Power Selection Jumper JP1 located on the Base Assembly allows the user to select one power source or the other The CDU is shipped with this jumper set to the 72V position To change the Power Selection Jumper setting simply remove the CDU s top cover remove the jumper plug and place it in the desired position as marked on the PCB silk screen Replace the top cover 2 4 2 Installing the CDU onto a Mounting Tray Prior to connecting any cables to the CDU it is recommended that the locomotive Radio Circuit Breaker be turned OFF Slide the CDU into the keyhole slots in the Mounting Tray Engage the screw latch at the rear of the CDU Tighten the screw latch until the CDU is firmly in place Do not overtighten Padlock the unit if desired Connect the CDU Power cable to the power connector on the CDU If applicable connect the CDU Odometer
50. er US amp S part number N4512321264 3 5 disk or N4512321265 5 25 disk The software incorporates a full set of diagnostic functions for maintenance purposes and supports the capability to fully configure the CDU s operating functions This manual provides examples of the diagnostic functions and provides detailed information on CDU configuration Refer to Service Manual SM 7064 Shop Maintenance for detailed diagnostic information and procedures 4 1 4 Running the Diagnostic Software To run the Diagnostic Software perform the following 1 Power up the CDU Do NOT plug the serial cable into the DIAG connector yet Let the CDU execute its normal power up sequence Also power up the diagnostic PC if it s not already on 2 Now connect the straight through not null modem serial communications cable between the diagnostic PC and the CDU s rear mounted DIAG connector The CDU s DIAG port is permanently set up for 9600 baud 8 data bits 1 stop bit and no parity 3 On the PC execute the Diagnostic Software from the floppy disk or from the hard disk if it has been copied there by typing diagunit followed by Enter 4 The Communications Set Up Screen will appear as shown on the next page The program name and version appear at the top of the screen The box at the bottom of the screen displays any prompts for user input The last line shows applicable PC function keys 5 The Diagnostic Software defaults to PC serial
51. ess Esc oM 7063 07 97 4 6 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 4 Enable Two Way Mode To read the current Mode setting or enable disable the two way mode select item 4 Enable Two Way Mode from the Main Configuration Menu and press Enter The following screen showing the current mode will appear US amp S End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Enable Two way Made Current value is ON 51 Possible values are H OFF 1 OM EE m pepe uu sc go hack quit program To default the initial power up mode to One Way or Two Way Mode type in the number of the desired mode and press Enter The selected mode will be the one used by the CDU when it is powered ON Subsequent changes via the CDU front panel using the Press SET to change to One Way or the Press SET to change to Two Way functions during the entry of a new ID code will change the operating mode accordingly in the normal fashion To return to the Main Configuration Menu press Esc oM 7063 07 97 4 7 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 5 Set Low Pressure Threshold To read the current Low Pressure Threshold value or change the value select item 5 Set Low Pressure Threshold from the Main Configuration Menu and press Enter The following screen showing the current value will appear US amp S End of Train System Diagnostic Unit Software 1
52. esult of the brakepipe pressure dropping to lt 5 psig the following message is output to the Datalogger Port NO AIR 5 If the CDU is in the ID Scan Mode where it is displaying all incoming IDs all readable IDs are output to the data logger port in the following format 1D 12345 6 If an ARM NOW message is received from the End Unit the following message is output to the Datalogger Port ARM NOW 7 If the Arming process has failed the following message is output to the Datalogger Port ARM FAIL 8 If the Arming process was successful the following message is output to the Datalogger Port ARMED 9 On CDU power up the following messages are output to the Datalogger Port US amp S6696 followed by POWERUP 10 If a failure occurs during the CDU power up self test sequence the following messages are output to the Datalogger Port SELFTEST followed by FAIL oM 7063 07 97 3 31 3 16 2 Event Recorder Format SECTION Ill OPERATION CDUs configured for Event Recorder Protocol conform to the data transfer protocol described in this section 3 16 2 1 Data is transmitted as follows 1 RS 232 C Signal Levels 2 Asynchronous serial Electrical Characteristics 3 Baud Rate Start Bit Data Bits Stop Bit and Parity as configured via the Diagnostic PC Standard event recorders typically require these to be set to 1200 Baud 1 Start Bit 8 Data Bits 1 Stop Bit and No Parity
53. g select item 11 Enable Automatic Arming and press Enter The following screen will appear US amp S End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Enable Automatic Arming Current value is OFF lt A gt Possible values are H OFF 1 ON EUMD ee sc go hack quit program To enable or disable this function type in the menu item number and press lt Enter gt Press the lt Esc gt key to return to the Main Configuration Menu SM 7063 07 97 4 17 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 12 Set Transmit Power Level The CDU normally transmits Emergency brake commands to the End Unit at 2 Watts RF power The CDU has the capability to transmit at higher power levels as required by the Railroad To select the transmit power level type in 12 Set Transmit Power Level and press Enter The following screen shows the currently selected setting USAS End of Train System Diagnostic Unit Software 1 H Copyright 1795 Union Switch amp Signal Inc Set Transmit Power Level Current value is ALWAYS USE HIGH POWER 4 WATTS lt 2 gt Possible values are H ALWAYS USE STANDARD POWER 2 WATTS 1 USE HIGH POWER AS NEEDED 4 WATTS Pa 3 ALWAYS USE HIGH POWER 4 WATTS ALWAYS USE OPTIONAL Ta AMPLIFIER Enter a new value The factory default setting is typically O for the 2 Watt power level The transceiver module in the CDU su
54. gram The factory default protocol is Data Logger Protocol as defined in Section 3 16 1 The Event Recorder Protocol is described in Section 3 16 2 To change the protocol type in the desired submenu item number and press lt Enter gt To return to the Set Protocol menu press lt Esc gt SM 7063 07 97 4 11 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 7 2 Set Baud Rate The screen below shows the current baud rate setting Set Baud Current value is 1200 62 Possible values are 3HH 6 HH 1288 2448 7688 F4 quit program To change the baud rate setting type in the desired submenu item number and press Enter To return to the Set Protocol menu press Esc 4 4 7 3 Set Bits per Character The screen below shows the current bits per character setting Set Hits per Character Current value is 8 1 gt Possible values are To change the number of bits per character type in the desired submenu item number and press lt Enter gt To return to the Set Protocol menu press lt Esc gt SM 7063 07 97 4 12 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 7 4 Set Parity The screen below shows the current parity setting Set Parity Current value is MONE lt t Possible values are H HOHE i EUEH ODD ack AM uit program To change the parity type in the desired submenu item number and press Enter To return to the Set Protocol menu pre
55. h its Emergency Switch is disabled When switching to One Way mode the ALARM annunciator will NOT flash ON since Arming does apply in One Way mode b If the CDU is currently operating in One Way mode the user is prompted as follows Saving followed by Press SET to change to Two Way followed by New ID The Press SET to change to Two Way message is displayed for 5 seconds e f the SET key is NOT pressed during the 5 second window the CDU will continue to operate in One Way mode and the sonalert will beep once to signal the successful completion of the save of the new ID code into the CDU s parameter storage EEPROM The ID Code Display will continue to show ID alternating with ONE WAY as a constant reminder to the locomotive operator that the CDU is in One Way mode and as such its Emergency Switch is disabled e f the SET key is pressed during the 5 second window the CDU will switch to Two Way operation and the Function Menu Display will indicate Changing mode followed by Operation is now Two Way If the CDU is configured to operate with the Arming security feature the ALARM annunciator will flash ON accompanied by 5 beeps from the sonalert and the ID Code Display will show ID HHHHE alternating with NOT ARMD if the CDU has not yet been Armed to the new ID Code See Section 3 10 Arming process oM 7063 07 97 3 10 SECTION Ill OPERATION 2 If
56. he value on the display as the operator selected value a ie menu item ULL peer orocess with an End Unit Table 3 3 Quick Reference CDU Function Keys oM 7063 07 97 3 SECTION Ill OPERATION 3 6 EMERGENCY BRAKE SWITCH The Emergency Brake Switch is only operational if the CDU is operating in Two Way mode and is Armed to the End Unit ID code being displayed in the ID Code Display When the operator flips this switch the CDU transmits the emergency braking command to the End Unit To help prevent unintentional activation this switch is protected with a spring loaded RED switch guard forcing the user to consciously select it The switch itself is also spring loaded to return to the OFF position when released 3 7 SONALERT The sonalert is used to alert and warn the locomotive operator of events or conditions needing attention and to indicate successful completion of certain tasks To indicate the successful completion of a task such as the successful entry of the ID code the sonalert will beep once To indicate potential problems such as an Alarm condition the sonalert will beep five times The sound intensity of the sonalert is adjustable in four steps using the function menu item Change Loudness of 4 Note that on CDU power up the default loudness is always set to maximum oM 7063 07 97 3 8 SECTION Ill OPERATION 3 8 OPERATION of CDU FUNCTION MENU ITEMS This section provides a detailed descriptio
57. ic PC oM 7063 07 97 3 13 SECTION Ill OPERATION 3 8 5 Calibrating the Odometer Using a Measured Mile Calibration of the Odometer is used to compensate for locomotive wheel wear and differences in wheel diameter from one locomotive to another The allowable range of locomotive wheel diameters is 34 00 inches through 46 00 inches The CDU s default value is 40 00 inches Calibration of the wheel diameter can be done in one of two ways e Direct Entry though the use of the Diagnostic PC see Section IV e Through the use of the odometer while traveling past measured mile markers along the track This section describes odometer calibration using a measured mile 1 To calibrate using a measured mile press the MENU UP or MENU DOWN key until the Function Menu Display reads Measured Mile press SET When the Zero Mile marker is passed press the SET key to begin the measurement The pulses from the axle alternator are converted into a distance based on the current calibration value The Function Menu Display reads Press SET at End of Mile ft where is the incremental 4 digit count of the distance traveled in the currently configured units mile or kilometer as the train moves through the measured mile or measured kilometer 2 When the One Mile marker is reached press the SET key a second time to mark the end of the mile and to calculate the new wheel size 3 If the measurement is such that the calculate
58. in before actuating the EMERGENCY switch With the correct ID code entered the CDU is ready to begin receiving messages for display oM 7063 07 97 3 1 SECTION Ill OPERATION 3 3 DESCRIPTION of CDU FRONT PANEL DISPLAYS and CONTROLS All of the CDU Model 6696 operating displays and controls are located on the Front Panel and are arranged for easy use by the locomotive operator Figure 3 1 below illustrates the CDU s front panel layout Brake Pressure Display Function Menu Display ID Code Display Armed Status LED Optional Union Switch amp Signal Inc pk ID 12345 O ARMED pl amr UE MOVING oe ALARM FAILURE FTOR STOPPED Annunciator LEDs Sonalert Function Keys Emergency Brake Switch Figure 3 1 CDU Model 6696 Front Panel Layout 3 4 DESCRIPTION of CDU DISPLAY SYSTEM The CDU front panel incorporates 5 display sections These are the Brake Pressure Display and Integral Message Receipt Indicator Function Menu Display ID Code Display Annunciator LEDs ARMED Status LED Optional RON 3 4 1 Brake Pressure Display This large 3 digit LED numeric display indicates the last valid brake pressure measurement received by the CDU Brake pipe pressures ranging from 0 to 125 psig can be indicated to the nearest 1 psig The Brake Pressure Display will show three dashes until a valid message is received This indicates that the current pressure is unknown oM 7063 07 97 3 2
59. in the menu item number and press Enter To return to the Main Configuration Menu press Esc oM 7063 07 97 4 19 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 14 Blanking the Function Menu Display During No Activity This configuration item is only applicable when the CDU s Change ID Menu Item is being viewed If this configuration item is enabled and none of the CDU s Function Keys are pressed for a period of 2 minutes the CDU will display the currently entered Customer String e g ABC Railroad for 2 minutes and will then blank the Function Menu Display This has been provided to reduce distractions to the locomotive operator To enable or disable this feature type in 14 Blank ID Menu During No Activity and press Enter The following screen shows the currently selected setting USS End of Train System Diagnostic Unit Software 1 8 Copyright 19795 Union Switch amp Signal Inc Blank ID Menu During Mo Activity Current value is OM 1 gt Possible values are B OFF 1 OH Enter a new value 5C To change the operational mode type in the menu item number and press lt Enter gt To return to the Main Configuration Menu press lt Esc gt SM 7063 07 97 4 20 APPENDIX A SOFTWARE UPGRADES A 1 CDU Software Upgrades The CDU uses a FLASH type programmable non volatile memory chip to store its application software as opposed to a standard EPROM This eliminates the need to disassemble the un
60. it and physically replace the EPROM in the event that software upgrades are issued Software upgrades are supplied by US amp S on a CDU Executable Software Disk containing two files 1 the latest upgrade version of the CDU executable software named cdu hex and 2 the Cab Unit Flash Loader program named load exe This is a 3 5 disk and is available under US amp S part number N451232 1633 ooftware upgrades are downloaded into the CDU s Flash memory from a PC connected to the CDU s rear mounted DIAG connector via the same 9 pin D type serial cable used for performing diagnostics The download function is performed by running the Cab Unit Flash Loader Software as detailed in the following sections A 2 Cab Unit Flash Loader Program The Cab Unit Flash Loader program is named load exe and runs on a DOS compatible PC Although this program may be run from the floppy disk drive it is preferable to copy it to a directory on the PC s hard drive The new Upgrade Version of cdu hex must reside on same the floppy disk or hard drive directory containing load exe A 3 Using load exe At the PC DOS prompt the command syntax for load exe can be viewed by typing in load followed by lt Enter gt The PC will display the command structure as follows Cab Unit Flash Loader REV 1 Thu Jul 18 16 11 41 EDT 1996 Usage load lt serial port lt filename gt r where cserial port is COM1 or COM2 filename i
61. l information will immediately extinguish oM 7063 07 97 3 23 SECTION Ill OPERATION 3 12 ALARM INDICATIONS The CDU incorporates 4 dedicated RED annunciators in conjunction with messages displayed on the ID Code Display to present alarm conditions to the locomotive operator These operate as described in the following paragraphs 3 12 1 Low Battery The LOW BATTERY annunciator turns ON to indicate the existence of a low battery capacity condition in the End Unit The ID Code Display indicates if the alarm is a weak or replace battery condition and will alternate with other information already being displayed such as the current ID code To gain attention from the locomotive operator when a low battery condition is first sensed the LOW BATTERY annunciator will flash 5 times accompanied by beeps from the sonalert The ID Code Display will also flash WEAKBATT or REPLBATT to indicate a weak or replace battery condition respectively The LOW BATTERY annunciator will then stay ON until the battery in the End Unit has been replaced The WEAKBATT and REPLBATT messages will continue to be shown on the ID Code Display and will alternate with other information already being displayed These messages will extinguish once the End Unit Battery has been replaced A weak battery condition indicates that there are several hours of operating life remaining in the battery depending on the condition of the battery itself the number of radio
62. l performed via a standard DOS compatible personal computer PC As an additional safety feature the CDU also displays the status of the emergency brake valve drive circuitry used in the End Unit It will show a Valve Fail alarm indication if a problem is detected 1 2 DEFINITION of TERMS The following terms and abbreviations are used throughout this manual EOT End of Train Refers to an End of Train telemetry system comprised of a Cab Unit mounted in the locomotive and an End Unit mounted on the coupler of the last train car CDU Communication Display Unit A two way End of Train Cab Unit e g CDU Model 6696 SBU Sense and Brake Unit Any generic two way End of Train End Unit capable of remote Emergency Brake Applications HVM Highly Visible Marking Device The Marker Light portion of the End Unit an FRA approved flashing light used to mark the end of the train oM 7063 07 97 1 2 SECTION INTRODUCTION 1 3 PATENTS AND TRADEMARKS Patents have been granted or are pending on items described in this manual In the USA the following patents have been applied for or have been granted Railway Brake Pressure Monitor Patent 4 487 060 Coupler Mount Assembly Patent 4 520 662 Rechargeable Battery Pack Patent 4 554 221 Similar patent applications have been made or are being made in Canada and Australia DIGITAIR is a registered trademark of Union Switch amp Signal Inc 1 4 R A I L TEAM AND TECHNICAL SUPPORT Th
63. n designed using a modular approach for ease of production and user maintenance TILIA LA pe tekni am int x T ud Ta Tw tee i ver 1 par sm j CFEXITLITTT UT B nine i HERI EL erp fia i hi A R ii LI E ad ali i S L LEL LLE g 1144488424 ES mE EE EELLLLILLEE I 1 PoP es eee eee Figure 1 3 Model 6696 CDU Features Top Internal View The CDU is comprised of the following three 3 major sub assemblies e Front Panel Assembly Contains the Processor Board LED Display Driver Board Display Panel and Emergency Switch Assembly e Rear Panel Assembly Contains the Interface Connectors and UHF Transceiver Module e Base Assembly Contains the Bottom Housing Power Supply Circuitry and serves as the base into which the Front and Rear Panel Assembly plug oM 7063 07 97 1 8 SECTION INTRODUCTION 1 8 CDU FUNCTIONAL BLOCK DIAGRAM The following is a functional block diagram of the CDU Model 6696 showing its major sub systems and external interfaces Lap top i Internal Diagnostics and Calibration for Diagnostics transceiver UART Information DUAL gt Datalogger or CHANNEL Event Recorder Device UART General Digital Inputs Front Panel Switches FLASH System RAM RAM Reverser Switch Inputs 20 60 PPR Axle Alter Select 1 Axle Alternator Input 1 Front Panel Displays Parameter Boot PoWerSUBDI EEPROM EPROM Pply or or Cab Unit Block Diagram 4 3 96 12VDC 74VDC Ss Figure 1 4
64. n on the use each of the CDU s Function Menu Items Use the MENU UP or MENU DOWN key to select the desired Function Menu Item as required 3 8 1 Viewing and Changing the ID Code Many trains can exist in close proximity to one another therefore each CDU End Unit pair must have a way to identify messages that are coming from its mated unit Sharing a unique ID code is how this is done The End Unit is assigned a unique ID code during manufacturing which is stored in its parameter storage EEPROM The CDU must be programmed with an ID code that matches that of the End Unit 1 The ID Code Display shows the current ID code as follows ID HHHHE where is the 5 digit ID code currently stored in the CDU s non volatile EEPROM memory 2 To change the ID code press the MENU UP or MENU DOWN key until the Function Menu Display reads Change ID The ID code is changed by using the or keys to select the digit s to be modified The current active digit flashes Use the T or 4 keys to increment or decrement the selected active digit 3 Once the desired ID code has been selected press the SET key to store the new ID code After pressing the SET key the CDU will display Saving followed by New ID 3 8 1 1 Operation if Allow Changing Between One and Two Way ID Menu is Enabled If the Configuration Item entitled Allow Changing Between One and Two Way ID Menu is enabled the CDU will
65. nd Unit but is not permitted to initiate an emergency braking command i e its Emergency Switch is disabled Only after Arming is an ID code considered to be an AUTHORIZED ID Code The figure below illustrates the Arming process To Arm a CDU End Unit pair the locomotive operator enters the ID code of of the End Unit into the CDU and radios the operator at the end of the train that he is ready OK I m ready rn RR The operator at the end of the train presses the external TEST button on the End Unit and then releases it When the TEST button is released it an arming request signal is sent by the End Unit This message contains the End Unit s ID and is marked as a Request to Arm message NS T CT When the Request is received by the CDU the locomotive operator is prompted to proceed with the message PRESS COMM ARM TO ARM accompanied by the sonalert sounding for 5 seconds The operator has 5 seconds to respond by pressing the COMM ARM key This initiates the Command to Arm message 0000 GoGo 0000 0000 5 Second Beep Command io An Bla a oe RR PRESS COMM ARM TO ARM When the Command is received by the End Unit it responds with a Arming Confirmation message When this message is received by the CDU it responds by declaring SYSTEM IS NOW ARMED to indicate successful completion of the arming process Arming Confirmation Message OLN AA UR RURSUM NF i G SYSTEM IS NOW ARMED Note The
66. onfigured for Metric Units the Train Speed is displayed in kilometers per hour kph Before the Train Speed can be considered valid the CDU must be calibrated using the Measured Mile method or by direct entry of the wheel size through the use of the Diagnostic PC 3 8 9 1 Setting and Using English or Metric Units The Diagnostic PC can be used to configure the CDU to operate in either English or Metric units see Section IV This applies to all odometer related functions as follows Odometer Function EnglishUnits Metric Units Meters m Millimeters mm Meters m Meters m Meters m Kilometers Hour Minute kph min Kilometers Hour kph Table 3 4 English or Metric Units SM 7063 07 97 3 16 SECTION Ill OPERATION 3 8 10 Display Secondary Air Pressure This function is made available for railways using dual pressure type End Units It provides a secondary display of the air pressure for the auxiliary pressure source To display the Secondary Air Pressure press the MENU UP or MENU DOWN key until the Function Menu Display reads Secondary Pressure where is the 3 digit numeric value of the air pressure This value will indicate prior to reception of a message from the End Unit indicating that the pressure is not yet known SM 7063 07 97 3 17 SECTION Ill OPERATION 3 8 11 Disarming the CDU When a CDU End Unit pair are broken up i e when the End Unit is moved from one train
67. port COM1 If use of COM2 is required press F2 to use COM2 Press F1 to return to COMI 6 To quit the program at any time press F4 The program will prompt with Really quit Y N If Y is selected the program will terminate If N is selected the program continues oM 7063 07 97 4 1 SECTION IV CONFIGURATION amp DIAGNOSTICS en m 1588 End of Train stem Dia agnostic Unit Software 1 0 dc Copyright s Union Satch Signal Inc In initiate disgnostics power up the Unit in mareal operation connect a straight through cable trom the PL to the nt press the button on the Unit te start disgnostics monde F use COM F use COM Fd quit program 7 To initiate the diagnostic Main Menu press any of the CDU s Function Control Keys 4 2 Main Menu When the CDU is operating in diagnostic mode the first screen displayed on the PC is the Main Menu 1 Diagnostic Items 2 Configuration Items repeat selection F4 t program To select one of the submenus associated with Diagnostic Items or Configuration Items type the desired menu item number and press lt Enter gt SM 7063 07 97 4 2 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 3 Diagnostic Items This Diagnostic Items Menu displays selections which may show information about or perform a diagnostic test on specific elements of the CDU Show Model And Version Show End Unit Information Show Received Message Statisti
68. pports transmissions at 4 Watts as deemed necessary by the Railroad Setting and using the CDU at transmit power levels above 2 Watts may require licensing from the FCC Some Railroads require the capability to transmit at power levels higher than 4 Watts e g 8 Watts In this case the CDU can be equipped with an optional TX Amplifier module To change the transmit power level setting type in the menu item number and press lt Enter gt To return to the Main Configuration Menu press lt Esc gt SM 7063 07 97 4 18 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 13 Allow Changing Between One and Two Way Operation The CDU has the capability to operate in either one way or two way mode If this configuration item is set to ON the CDU will prompt the user to select the operational mode immediately after a new ID Code has been entered If the value is set to OFF the CDU will not prompt the user and will simply save the new ID Code and operate in two way mode at all times To enable or disable this feature type in 13 Allow Changing Between One and Two Way in ID Menu and press Enter The following screen shows the currently selected setting USRS End of Train System Diagnostic Unit Software 1 8 Copyright 1995 Union Switch amp Signal Inc Allow Changing Between One and Two Way in ID Menu Current value is OFF lt Possible values are H OFF 1 OH Enter a new value To change the operational mode type
69. prompt the user to switch from One or Two Way operation as follows 1 Depending on the current operational mode One Way or Two Way the CDU will prompt the user in one of the following ways a If the CDU is currently operating in Two Way mode the user is prompted as follows Saving followed by Press SET to change to One Way followed by New ID The Press SET to change to One Way message is displayed for 5 seconds e f the SET key is NOT pressed during the 5 second window the CDU will continue to operate in Two Way mode and the sonalert will beep once to signal the successful completion of the save of the new ID into the CDU s parameter storage EEPROM oM 7063 07 97 3 9 SECTION Ill OPERATION If the CDU is configured to operate with the Arming security feature the ALARM annunciator will flash ON accompanied by 5 beeps from the sonalert and the ID Code Display will show ID HHHHE alternating with NOT ARMD if the CDU has not yet been Armed to the new ID Code See Section 3 10 Arming process e f the SET key is pressed during the 5 second window the CDU will switch to One Way operation and the Function Menu Display will indicate Changing mode followed by Operation is now One Way In addition the ID Code Display will continuously show ID HiH alternating with ONE WAY as a constant reminder to the locomotive operator that the CDU is in One Way mode and as suc
70. r Cable Installation sees 2 2 2 3 3 Antenna and Cable Installation sseeeeeeesssesseeeeeeeeeeeennennn mnes 2 4 234 CDU Datalogger COEN 2 4 2 3 5 Frem Recorder COMMECION 4144 2 4 2 4 MOUNTINGTHE CDU aieo de eai E te eee att ioe 2 5 2 4 1 72VDC 12 VDC Power Selection Jumper JP1 rrrrnnnnnnnnnrnnnnnnnnrnnnnnrnnnrnnnnrnnnrnnnnrrnnnnnnn 2 5 2 4 2 Installing the CDU onto a Mounting Tray rerrrrrnnnrrorrrrrrrnnnnnnrvrvnrnnnnnnnrvrnvrrnnnnnnnsennnnrnnnsnnnee 2 5 2 4 3 Installing the CDU into an AAR Clean Cab Enclosure ccccccceeeeeesseeeeeeeeeeeeaeeseeeeees 2 5 2 5 BRIEF OPERATIONAL TESTOPF THE CDU uansett ie ORE EubVE ER pc Eat Es 2 6 251 CDU POE UP SEE d duties Delius cta o aet Granite canal dt ue i 2 6 252 GOW FUGLE qu m T PIN 2 7 oM 7063 07 97 ii TABLE OF CONTENTS Ii OPERA HON sioria 3 1 3 0 GPU OPERATING INSTRUCGTIONS oie doute pasta cea tato uo eoa eoe peo eo ate Deo oe omoes 3 1 3 1 Purpose and Use of ID Code Juana praes veo Ko river bU beS 2 paa e 3 1 3 2 Radio Communication Channel us ocoecu eitis esta oat setup DE died ae Gate 3 1 3 9 DESCRIPTION of CDU FRONT PANEL DISPLAYS and CONTROLS 3 2 3 4 DESCRIPTION of CDW DISPLAY SYSTEM aa 3 2 341 iBrakeTPressure DISDIdy sr 3 2 3 4 2 Message Receipt Indicator in Pressure Display rrrrrrnnrrvvvrrnnrrrvvrnrnnvrrennrrnnereernnnnnrrrennnnn 3 3 3
71. rm message it responds by transmitting an Arming Confirmation message back the CDU The CDU will then briefly display SYSTEM IS NOW ARMED completing the Arming process The NOT ARMD ALARM indication will turn OFF The optional ARMED Status LED will light if equipped on the CDU front panel The CDU is now authorized to execute an Emergency Brake Command if required 6 If the SET key is not pressed during the 5 second window or if the End Unit doesn t respond as described above the Function Menu Display will briefly show ARMING FAILED In this case the process must be repeated from Step 3 above oM 7063 07 97 3 22 SECTION Ill OPERATION 3 10 2 Automatic Arming Not all railroads elect to use the relative security provided by the Arming technique They may choose to use Automatic Arming instead In this case the CDU is always Armed to the entered ID code the Emergency Switch is always enabled and there is no need for an operator at the rear of the train This feature is configurable via the Diagnostic PC see Section IV When the Automatic Arming function is enabled the Scan ID function is locked out cannot be enabled 3 11 MOTION INDICATION The state of motion of the last train car is indicated on the CDU Front Panel by the MOVING and STOPPED annunciators If the End Unit has the capability to sense the initial direction of motion this is displayed on the ID Code Display as FORWARD or REVERSE 1 F
72. rom CDU power up both the MOVING and STOPPED annunciators remain OFF until the last train car begins to move From then on one or the other will always be lit to indicate the state of motion of the last train car 2 If the last car initially begins to move forward the End Unit sends a message indicating forward motion When the message is received by the CDU the MOVING annunciator turns ON and the ID Code Display flashes FORWARD for 10 seconds then continues to steadily display FORWARD for another 10 seconds This will alternate with other information being displayed such as ID or one of the ALARM messages 3 If the last car initially begins to move backward the End Unit sends a message indicating reverse motion When the message is received by the CDU the MOVING annunciator turns ON and the ID Code Display shows REVERSE for 10 seconds then continues to steadily display REVERSE for another 10 seconds This will alternate with other information being displayed such as ID or one of the ALARM messages 4 When the last car of the train comes to rest the End Unit sends a message indicating no motion When the message is received by the CDU the STOPPED annunciator turns ON and stays ON until movement at the rear of the train is again detected If the STOPPED annunciator lights during the indication of FORWARD or REVERSE i e train moves and then very shortly stops the directiona
73. rom an End Unit When the COMM ARM key or EMERGENCY switch is pressed the CDU switches to transmit mode sends the respective command message and then immediately returns to receive mode If the optional Arming feature a security function is enabled in the CDU the Emergency transmission is sent only if the CDU has been Armed to the ID code of its matched End Unit If the CDU is connected to the locomotive axle alternator it can be configured for various odometer related functions These include the capability to display the distance traveled by the locomotive a train length function whereby the length of the train can be entered and stored and then be used as a preset distance counter and the display of train speed and or acceleration The CDU has built in functions to allow calibration of the odometer to compensate for locomotive wheel size variations In addition the CDU can be configured to display odometer measurements in English or Metric units Refer to Section III for operating instructions An RS 232 serial port used for datalogger and event recorder functions is a standard feature of the CDU Whenever new information appears on the display or a transmission is received from the End Unit the data is transmitted to this port so that it may be stored in a computer event recorder or be directly printed The CDU also supports an RS 232 serial port for diagnostics unit configuration and download of software upgrades These are al
74. s the executable to be loaded in Motorola Exormax format r means run the program after loading optional Use a straight through cable from the PC to the Unit Therefore the typical command line depending on the PC serial port being used will be load COM1 cdu hex r Enter if PC serial port 1 is being used or load COM2 cdu hex r lt Enter gt if PC serial port 2 is being used SM 7063 07 97 A 1 APPENDIX A SOFTWARE UPGRADES A 4 Procedure for Downloading CDU Software Upgrades To download CDU software upgrades perform the following 1 On the PC copy the new Upgrade Version of the file cdu hex to the floppy disk or hard drive directory containing the Cab Unit Flash Loader Software load exe 2 Turn OFF power to the CDU 3 Connect one end of the serial cable to the CDU s DIAG connector and the other end to one of the PC s serial ports either COM1 or COM2 The CDU s DIAG port is permanently set up for 9600 baud 8 data bits 1 stop bit and no parity Set the PC serial port accordingly 4 Turn ON power to the CDU The CDU will automatically detect the presence of the serial cable and indicate it is ready for Flash download by displaying 8 8 8 on the Brake Pressure Display with all other displays turned OFF 5 On the PC enter the load command for the Cab Unit Flash Loader as follows load COM1 cdu hex r Enter if PC serial port 1 is being used Or load COM2 cdu hex r Enter if PC serial
75. ss Esc 4 4 7 5 Set Number of Stop Bits The screen below shows the current setting of the number of stop bits Set Humber of Stop Bits Current value is 1 tH Possible values are E 1 1 5 1t program To change the stop bits setting type in the desired submenu item number and press Enter To return to the Set Protocol menu press Esc oM 7063 07 97 4 13 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 8 Configure Armed Status LED Three versions of the CDU Front Panel are available to accommodate the Armed Status LED as follows 1 Panel marked with NOT ARMED LED turns ON when CDU is disarmed 2 Panel marked with ARMED LED turns ON when the CDU is armed 3 Panel with NO marking LED is not used To configure the operation of the Armed Status LED select item 8 Configure Armed Status LED and press Enter The following screen showing the menu items will appear USS End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Configure Armed Status LED Current value is LED I5 OM WHEN UNIT IS ARMED 1 Possible values are H LED IS OFF WHEN UNIT IS ARMED 1 LED IS ON WHEN UHIT I5 ARMED 2 LED IS UNUSED tonite sc go back 4 quit program The default configuration setting is menu item 1 LED IS ON WHEN ARMED for use with a Front Panel marked with ARMED Select menu item 0 LED IS OFF WHEN UNIT ARMED for use with a Front Panel m
76. stallation Parts 1 5 3 Diagnostic Software Disk The CDU does not rely on a dedicated external device for system diagnostics All of the unit diagnostic tests and configuration functions are included on a Diagnostics Software Disk that runs on a standard DOS compatible personal computer PC which plugs into the CDU s rear mounted Diagnostic Port The Diagnostic Software has been designed to permit easy customization of the operation of the CDU Most of the variable default values and functions are user selectable set by the factory at purchase time or by railway technicians via a PC computer after purchase The Diagnostic Software program on the disk is named diagunit exe and its use is described in Sections IV The Diagnostic Software Disk can be ordered under the following part numbers Part Number 3 5 Diskette N451232 1264 5 25 Diskette N451232 1265 Table 1 2 Diagnostic Software Diskette 1 5 4 CDU Executable Software Disk The CDU uses a FLASH type programmable non volatile memory chip to store its application software as opposed to a standard EPROM This eliminates the need to disassemble the unit and physically replace the EPROM in the event that software upgrades are issued The CDU Executable Software disk allows the user to download CDU software upgrades into the CDU s internal FLASH memory This disk contains two files 1 the latest upgrade version of the CDU executable software named cdu hex and 2
77. t the CDU has not yet completed the Arming process oM 7063 07 97 3 6 SECTION Ill OPERATION 3 5 FUNCTION KEYS The CDU Function Keys consist of nine 9 pushbuttons These are illuminated back lit for readability at night All CDU functions are performed using these keys Lil di d O ARMED ID 12345 __ Sk Li MARKER MOVING nior ALARM ON FAILURE SET LOW FTOR BATTERY STOPPED FAILURE Function Keys Emergency Brake Switch The table below provides a quick reference on the purpose each Function Key Function Key Description of Operation 1 MENUUP Selects the next menu item in ascending order 2 MENU DOWN Selects the next menu item in descending order Hp Moves the flashing selector prompt for entry of numeric digits one position to the right The selected active digit will flash LOW IE the flashing selector prompt for entry of numeric digits one LOK IAE to the left The selected active digit will flash Increments the selected active digit by 1 If depressed for more than 1 second it continues to increase Wrap around to 0 occurs after 9 This key is also used to increase the sonalert volume and front panel display brightness Decreases the selected active digit by 1 If depressed for more than 1 second it continues to decrease Wrap around to 9 occurs after 0 This key is also used to decrease the sonalert volume and front panel display brightness ewe Accepts t
78. table below provides a quick reference on the purpose of each Annunciator LED Functional Description Color MARKER Turns ON to indicate that the Marker Light on the End Unit is Green TE uiii ai d LOW Turns ON to indicate the existence of a low battery condition in the BATTERY End Unit The ID Code Display indicates if the alarm is a weak or replace battery condition moune Turns ON to indicate that motion has been sensed at the last train MOVING car The ID Code Display indicates the initial direction as Forward or Reverse Turns ON to indicate that the motion of the last car has stopped Green STOPPED Note this LED is initially OFF until the last car begins to move and then comes to rest again R TOF Turns ON to indicate the existence of a rear to front radio FAILURE communications failure When rear to front communications are restored this LED will turn OFF orn Turns ON to indicate the existence of a front to rear radio hul FAILURE communications failure When front to rear communications are restored this LED will turn OFF 7 Turns ON to indicate the existence of a system problem The ID ALARM Code Display gives details on the nature of the Alarm It is extinguished when the condition is corrected Table 3 2 Quick Reference CDU Annunciator LEDs oM 7063 07 97 3 5 SECTION Ill OPERATION 3 4 6 ARMED Status LED Optional Three versions of the CDU front panel are available 1 panel marked with A
79. the ID Code To change the locomotive wheel size diameter press the MENU UP or MENU DOWN key until the Function Menu Display reads Wheel Size press SET where is the locomotive wheel diameter After pressing SET the CDU will display New Wheel Size The allowable wheel diameter range is 34 00 inches through 46 00 inches The CDU is shipped with a default value of 40 00 inches If a value outside this range is entered the CDU will revert to the currently stored value If the CDU is configured for Metric Units the wheel size is displayed in millimeters mm oM 7063 07 97 3 15 SECTION Ill OPERATION 3 8 8 Viewing Train Acceleration To view train acceleration press the MENU UP or MENU DOWN key until the Function Menu Display reads Acceleration mph min where is the acceleration value in miles per hour per minute Negative values indicate deceleration If the CDU is configured for Metric Units the Train Acceleration is displayed in kilometers per hour per minute kph min Before Train Acceleration values can be considered valid the CDU must be calibrated using the Measured Mile method or by direct entry of the wheel size through the use of the Diagnostic PC 3 8 9 Viewing the Train Speed To view train speed press the MENU UP or MENU DOWN key until the Function Menu Display reads Speed mph where is the speed value in miles per hour If the CDU is c
80. the Cab Unit Flash Loader program named load exe The use of this disk is described in Appendix A The CDU Executable Software disk is available on a 3 5 diskette under US amp S part number N451232 0821 SM 7063 07 97 1 4 SECTION INTRODUCTION 1 6 CDU SPECIFICATIONS Operating Temperature Range Storage Temperature Range Humidity 95 non condensing at 40 C 96 hour exposure Vibration any axis peak to peak Shock 11 msec triangular 3 planes Altitude Current Consumption 72 VDC 13 6 VDC Power Input Negative Ground Transmit Frequenc Transmit Power Transmit Frequency Stabilit Emission Deviation at 1200 Hz Receive Frequenc Receive Sensitivity 12 dB SINAD Receive Frequency Stabilit Selectivit Intermodulation Immunit Spurious Rejection Image Rejection Input from Axle Alternator Wheel Diameter Calibration Range 34 00 min 40 00 default 46 00 max Configurable Parity Stop Bits and Data Bits Table 1 3 CDU Specifications oM 7063 07 97 1 5 SECTION INTRODUCTION 1 7 CDU MAJOR COMPONENTS The photo and illustration below shows the CDU Model 6696 external components and typical front panel layout L NJ ee ID 85323 LOW FTOR STOPPED Figure 1 1 Model 6696 CDU Features amp Front Panel Layout 1 7 1 CDU Unit Housing The CDU Model 6696 uses the same exterior aluminum alloy housing used on previous versions of DIGITAIR Cab Units This helps ensure the Model 6696 will fit into
81. the ID code digits have been changed but the SET key has not yet been pressed to store the new ID code pressing the CANCEL key will cause the ID code to revert back to its original value 3 Refer to Section 3 10 for a full description of the Arming process 3 8 1 2 Operation of Change ID Code Display if Blank ID Menu During No Activity is Enabled If the Configuration Item entitled Blank ID Menu During No Activity is enabled and none of the Function Keys are pressed for a period of 2 minutes the CDU will display the currently entered Customer String e g ABC Railroad for 2 minutes and will then blank the Function Menu Display This only applies to the Change ID Menu Item and has been provided to reduce distractions to the locomotive operator 3 8 2 Entering the Train Length Before the operator can make use of the Train Length Distance function the current length of the train must first be entered This is accomplished as follows 1 To view the current train length or enter a new one press the MENU UP or MENU DOWN key until the Function Menu Display reads Change train length ft where is the current 5 digit value of the train length stored in the CDU s parameter storage EEPROM memory 2 The train length is changed in the same manner as the ID code Use the gt or lt keys to select the digit s to be modified The current active digit flashes Use the T or JV keys to increment or decrement the selected
82. to coast this distance is included in the measurement The distance traveled will continue to be accumulated until there have been NO pulses for 2 seconds i e the train has stopped If the Reverser Handle is then placed in the REVERSE position i e the train is backing up movement in this direction will decrement the displayed distance At any point the distance indicated on the display is the net distance traveled allowing for backing up Since there are only 5 digits in the display it will roll over to 00000 after passing 99999 The CDU will NOT begin counting until it has sensed either the FORWARD or REVERSE direction signal at least once 3 A second press of the SET key will freeze the display indicating the net distance traveled For example Odometer 02750 ft but the counter will keep counting Subsequent presses of the SET key will unfreeze freeze the display until the function is terminated 4 Press the CANCEL key to reset the Odometer function and restart from Step 1 above or to terminate it and advance to another menu item 5 f the MENU UP or MENU DOWN key is used to change from the Odometer function to another menu item function before the measurement is complete the measurement will continue and the correct distance will be displayed when the operator returns to the Odometer menu 6 The units displayed feet or meters will be per the configuration selected via the Diagnostic PC Before the
83. to support the Arming security feature it will prompt the user to perform the Arming process as described in Section Ill IT IS NOT NECESSARY TO DO THIS IN ORDER TO PERFORM A FUNCTIONAL CHECK OF THE CDU Press the external TEST button to activate the End Unit and cause it to transmit a message Observe the Brake Pressure Display on the CDU With no air pressure applied to the End Unit the pressure reading should change from to 0 psi This will be accompanied by a Low Pressure Alarm since the pressure is below the standard 45 psig threshold and is normal Press the COMM ARM key on the CDU to initiate an RF link check Observe the CDU s 32 character LED Display briefly shows WAITING FOR REPLY shortly followed by COMM TEST OK This confirms correct operation of the CDU s RF transceiver and associated control circuits Note The rightmost decimal point in the Brake Pressure Display serves as an indicator to show that a message has been received from the End Unit It will briefly light each time a message is received Verify the integrity of the Emergency Switch contacts by activating the switch and observing a SYSTEM IS NOT ARMED message on the Function Menu Display Perform a LAMP TEST to verify that all of the LED display segments light This is done by simultaneously pressing the MENU UP and MENU DOWN keys as marked on the front panel Observe that each of the CDU s nine 9 Control Pushbuttons are illuminated i e
84. tocol Type Current value is AAR_OWE_WAY_B 1 Fossible values are H AAR ONE Un v 1 AAR ONE Un B 2 DSL ONE Wn G EUG ER e sc go back quit program To modify the protocol type in the number of the desired protocol and press lt Enter gt The selected protocol will be the one used by the CDU when the user wishes to switch to One Way operation as prompted by the Press SET to change to One Way function during the entry of a new ID code To return to the Main Configuration Menu press lt Esc gt SM 7063 07 97 4 5 SECTION IV CONFIGURATION amp DIAGNOSTICS 4 4 3 Set Two Way Protocol Type To read the current Two Way protocol setting or modify the protocol select item 3 Set Two Way Protocol Type from the Main Configuration Menu and press Enter The following screen showing the current protocol will appear US amp S End of Train System Diagnostic Unit Software 1 H Copyright 1995 Union Switch amp Signal Inc Set Two Way Protocol Type Current value is DSL_TWO_WAY_J 1 Possible values are H AAR_TWO_WAY 1 DSL TWO WAY J sc go hack quit program To modify the protocol type in the number of the desired protocol and press lt Enter gt The selected protocol will be the one used by the CDU when the user wishes to switch to Two Way operation as prompted by the Press SET to change to Two Way function during the entry of a new ID code To return to the Main Configuration Menu pr
85. transmissions occurring temperature and ambient light conditions i e duration that the HVM light is flashing This indication serves as a warning that a charged battery is required A replace battery condition indicates that there is very little battery capacity left and that the End Unit may not continue to operate until the next scheduled stop If the battery is unable to maintain End Unit operation a communications failure ALARM will result oM 7063 07 97 3 24 SECTION Ill OPERATION 3 12 2 Rear to Front Communications Failure R TO F FAILURE If no messages are received from the End Unit for a period of approximately 5 minutes 41 seconds the CDU will flash the R TO F FAILURE annunciator 5 times accompanied by beeps from the sonalert and then remain ON The Brake Pressure Display will indicate 3 dashes since the pressure reading is now unknown The R TO F FAILURE annunciator will remain lit until a valid message is received from the matching End Unit As soon a message is received the alarm will be reset and the annunciator will turn OFF Note Rear to Front Communications problems may be caused by e Long tunnels e Wrong ID Code entered into the CDU e Discharged battery in the End Unit e Faulty End Unit antenna or transmitter circuitry e Faulty CDU antenna or receiver circuitry 3 12 3 Front to Rear Communications Failure F TO R FAILURE A Front to Rear Communications Failure Alarm can be caused by one of th

Union Products Communication display Unit 6696 User's Manual

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