Train Information Braking Systems, TIBS, consists of a
head-end display unit, located in the locomotive cab and the Sense Braking
Unit, SBU, or end of train telemetry device.
The SBU is mounted on the rear car of the train. The SBU has a unique code that is entered
into the head-end display unit. When the
code is entered and the SBU’s test button is pressed at the appropriate time,
the system is armed. The armed SBU is
then able to transmit data concerning train function from the rear of the train
to the head-end display unit in the controlling locomotive cab. This data informs the engineer of any
operating problems that requires correction and it also enables the engineer to
place the rear of the train into emergency, if required.
The instructions and information in this section apply to
CPR’s head-end display units and SBUs.
In the GE AC4400 and SD90MAC locomotive cabs, display
units are integrated into the locomotive’s computer screens. Older locomotives are equipped with the
Digitair display unit, models #6653, #6656 and #6696 respectively. These display units are mounted on the
control stand of these locomotives and are also known as CLU/IDU and CDU.
Note: When the terms “head end display unit” or
“display unit” are used in these instructions, it refers to IFD, ICE, CDU, CLU
and IDU.
The IFD is the menu driven operator's screen on the GE
AC4400 locomotives. The ICE is the menu
driven operator's screen on SD90MAC locomotives.
IFD and ICE accept and display
information relevant to the rear of the train and also contain a separate
emergency braking feature that can be used in the event of a loss of the normal
braking capability of the locomotive.
The CDU accepts, analyzes and displays information
relevant to the rear of the train. The
CDU provides audible alerts and displays to assist the locomotive engineer in
the handling of his train. In addition,
the CDU is equipped with an emergency braking feature to be used in the event
of a loss of the normal braking capability on the locomotive.
A device located in the short hood of the locomotive,
which accepts, analyzes and forwards information to be displayed in the cab of
the locomotive.
The IDU provides audible alerts and displays to assist the
locomotive engineer in the handling of the train. In addition, the IDU is equipped with an
emergency braking feature to be used in the event of a loss of the normal
braking capability on the locomotive.
A device mounted on the side of the trailing coupler
casting and coupled to the brake-pipe on the rear car of a train. The SBU senses brake-pipe pressure, motion
and direction and transmits this information to the head-end of the train. The SBU is equipped with a highly visible
marker (HVM) to indicate the rear of the train.
(Further references in this section to the HVM do not apply unless the
SBU is so equipped.)
In addition, the SBU is equipped with an emergency braking
feature to be used in the event of a loss of the normal braking capability on
the locomotive.
When necessary to disconnect the display unit, (except IFD
or ICE display units must not be disconnected by crew members) the power supply
is to be shut off by placing the radio circuit breaker in the OFF position and
then disconnecting the twist lock connector.
Once the twist lock connector is
removed, it is to be placed in the dummy receptacle (where provided) and the
display unit keyed to indicate the test ID code of 00000. If the locomotive is one that is to be
occupied, the radio circuit breaker may then be placed in the ON position.
To disconnect the display unit on 9000 series locomotives,
the circuit breaker marked ETU is to be placed and remain in the OFF position.
After the locomotives are cut-off from a train that has arrived
at its final destination or there is a change in the controlling locomotive or
SBU, the locomotive engineer must disarm the TIBS emergency feature as follows:
a) On a GE AC4400s, press EOT Setup, Request Disarm and Disarm Two-Way.
Set
display unit to SBU code 80000
and press Enter Code.
b)
On
SD90MAC 4300s, press EOT IDENT, EOT
00000, and UNARM TWO WAY. Set display unit to SBU code 80000 and press ENTER IDENT.
c) On SD90MAC 6000s, press EOT ID, EOT
00000, and UNARM TWO WAY. Set display unit to SBU code 80000 and press ENTER ID.
d) On a DC traction locomotive
with IDU+CLU or CDU, set the display unit to SBU test code 00000 and press the COMM/ARM button to disarm the
SBU. Set display unit to SBU code 80000.
The functions that may be selected with MENU UP or MENU DOWN buttons are:
·
“Change ID”
·
“Change train length”
·
“Odometer”
·
“TL Distance”
·
“Measured mile”
·
“Disarm”
·
“Change loudness”
·
“Change brightness”
·
“Self test”
|
1
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 digits to be modified. The current active
digit flashes. Use the [á]
or [â] keys to increment or decrement the selected
active digit.
|
|
2
Once the ID code has been selected:
|
Press the SET
key to store the new ID code.
|
|
3
Function menu display will read:
|
“Saving...” followed by “Press SET to change to One-Way” followed by
“New ID #####”
Do not press SET
while is displaying “Press SET to change One-Way”. This will time-out after 2 seconds.
Note: The one-way option has been disabled. If a CDU
is found that still has this menu choice available, please tag it bad order
with a note describing the problem.
|
|
4
The alarm indicator will flash ON accompanied
by 5 beeps from the sonalert and “ID Code Display” will show:
|
“ID = #####” alternating with “NOT ARMED”.
|
|
5
The locomotive engineer then alerts the
employee at the rear of the train via voice radio to proceed with arming.
|
The employee at the rear of the train momentarily
presses the TEST button on the
SBU.
|
|
6
When the CDU receives the request to arm
message, it prompts the locomotive engineer for a response. The function menu
display reads:
|
“PRESS COMM/ARM TO ARM” for five seconds accompanied
by beeps from the sonalert.
|
|
7
If the locomotive engineer presses the SET key during the 5 second window,
the system will arm and the CDU will then briefly display:
|
“SYSTEM IS NOW ARMED” The NOT ARMD alarm indication
will turn off.
|
|
8
If the SET
key is not pressed during the 5 second window, or if the SBU 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 5 above.
|
|
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”
|
|
2
Use the [à] or [ß]
key to select the digit(s) to be modified. Use the
[ á
] or [ â
] to increment or decrement the selected active digit.
|
|
|
3
Once the desired train length has been
selected:
|
Press the SET
key to store the new value.
|
Before the locomotive engineer
can make use of the Train Length Distance function, the current length of the
train must first be entered.
|
1.
To use the Train Length Function:
|
Press the MENU
UP or MENU DOWN key until the function
menu display reads:
“TL Distance press SET”.
As the lead locomotive passes the initial starting
point, press SET and the displayed
length will decrement accordingly. The display will always indicate the
distance to go before the end of the train is clear of the point to be
passed.
|
|
2.
Press CANCEL
key to reset the train distance function.
|
|
|
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
train moves, it begins to count the distance.
|
|
3
Press the CANCEL key to reset the odometer
function.
|
|
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 default
is
38.1 inches.
|
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 function menu display reads:
“Press SET
at End of Mile ##### ft”.
|
|
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 calculated
wheel size falls within the permitted range, the calibration passes and the
sonalert will beep once to indicate that the measurement is completed.
|
For example: If
the function menu display reads:
“4954 ft,
corrected to 5280 ft”.
|
|
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”.
|
Using menu item “Change Brightness” adjust the display
brightness using [ á ] or [ â ] keys,
accept setting with the SET key.
Using menu item “Change Loudness” adjust the beep loudness
using [ á
] or [ â ]
keys, accept setting with the SET key.
Operation of the CDU is similar to that of the IDU, except
that the CDU is not equipped with thumbwheels, and alarms and information are
generally given by way of lights instead of displays. The displays, if used, are as follows:
·
3-digit pressure display.
·
5 digit numeric display.
·
8 character alphanumeric display.
The CDU is provided with a VIEW key and a SET key.
|
VIEW key:
|
Used to select available functions.
|
|
SET key:
|
Used to set parameters of functions selected with the VIEW key.
|
|
When ID function is selected:
|
Press SET
key once will activate “Set ID” mode and enable entry of a new ID code.
|
|
When SET
key is pressed a second time:
|
It will cause the CDU to store the new ID and the alphanumeric
display will indicate, “STORING”.
|
Functions that may be selected with the VIEW key are:
·
“Volume”
·
“Lamptest”
·
“Blank”
·
Return to previously stored ID code
Used in “Set ID” mode:
·
A flashing digit is displayed in leftmost
position of the numeric display.
·
The ODOM->
key and DIM/\ key take on the arrow
functions.
·
To change the value on the numeric display, use
the arrow keys to select (->) and
change /\ the digit(s).
·
When the desired ID code has been entered, press
the SET key again to store it. This will result in the display “Storing” and
an audible tone.
·
CDU will revert to ID Mode and display the new
ID code.
·
Used prior to “Storing” to cancel or return to
original ID code selection by pressing VIEW
key. “Cancel” will be displayed accompanied by an audible tone.
·
Used to adjust volume of the Sonalert audible
tone. Each press of the SET Key will change the volume.
·
Used in “Lamptest” mode to verify operation of
all front panel display LED’s.
·
Used in “Blank” mode to extinguish all displays
except pressure.
The DIM Key adjusts brightness of the Front Panel Display
LED’s.
It is essential that the ID code entered into the display unit
matches that of the SBU installed on the train, thereby preventing display of
erroneous information.
When the power is first applied, a series of
self-diagnostic tests will cause displays as follows: “DIGITAIR”,
“6650”, “J20” and
“**** ****”.
All characters will remain displayed until receipt of a
message bearing the same ID code.
The buttons on the IDU labeled C and D have no
application on CPR. The button marked P is used to adjust the brightness of
the display panel.
In addition to continuously displaying information
relevant to the rear of the train, the IDU provides audible warnings for Low
Pressure, No Air, Loss Of Communication, Battery Status, Failure Of The
Emergency Valve, HVM Status Changes and Arming Status.
The TIBS ARMING feature is contained in all components of
TIBS. The display unit may only be armed
to the test ID code of 00000, or a valid SBU ID Code. The arming of the display unit to other than
the test ID Code of 00000, will be performed as part of the standard
pre-departure testing of TIBS.
Arming of TIBS is to be performed as follows:
a) Enter
the ID Code of the SBU assigned to the train into the display unit, e.g. 80801.
b) During
pre-departure testing, when the TEST
button on the SBU is pressed, the display unit will sound an audible alert and
display “Arm Now” for five seconds.
c) To
arm the display unit, the COMM TEST
button must be pressed within the five-second interval in which the “Arm Now”
display is shown. This will cause the
display unit to indicate “Armed”.
d) The COMM TEST
button must not be pressed until the display indicates “Arm Now.” Pressing the button in advance of this
display will cause the following:
·
An audible alarm will sound and the display will
flash “Not Armed”. Locomotives
equipped with an IFD display “EOT Emergency Status Disabled”.
·
The display will revert to normal, with the
exception that “U” will be displayed in the “Comm.” field or the Not Armed
indicator will be illuminated as a reminder that the display unit is not
armed. Locomotives equipped with an IFD
continue to display “EOT Emergency Status Disabled”.
Once TIBS is armed, if the
display unit ID code is changed from that to which the system is armed,
the display or light will flash “Not Armed”.
After a brief period the system will revert to normal display
accompanied by “U” or Not Armed light as a reminder that the display unit is
not armed to the ID code entered therein. Locomotives
equipped with an IFD will display “EOT Emergency Status Disabled”.
Before starting the procedure, press F8 until you return
to Screen #000 000.
|
Step
|
Action
|
Result
|
|
1.
|
Press F3, Operator Function
|
Screen #300 000
|
|
2.
|
Press F3, EOT Set-Up
|
Screen #332 000
|
|
3.
|
Enter SBU # using keys
F1 - F5.
|
|
|
4.
|
Press F6, Enter Code
|
SBU# stored
|
|
5.
|
Press SBU test button (performed by another employee.)
|
EOT Status “Arm Now”
|
IFD Arming Procedure (GE
AC4400) – continue.
|
6
|
Press F7,
Arm 2-way.
(Within 5 seconds)
|
EOT Status “System Armed”.
|
|
7
|
Press F7,
Comm. Test
|
Comm. Test “Passed” indicates test successful.
|
|
8
|
Press F8,
Exit
|
Screen
#300 000
|
|
9
|
Press F8,
Exit
|
Screen
#000 000
|
Step
|
Action
|
Result
|
LEFT SCREEN
|
|
1
|
Ensure
screen displays “Operational Menu” with EOT
IDENT option.
|
|
|
2
|
Press
EOT IDENT.
|
EOT
keys displayed.
|
|
3
|
Enter
SBU # by pressing the keys below the spaces or existing digits.
|
|
|
4
|
Press
ENTER IDENT.
|
IDENT
updated on Right Screen.
|
|
5
|
Press
SBU TEST button on SBU (performed
by another employee.)
|
“ARM
TWO WAY”
key displayed.
|
|
6
|
Press
ARM TWO WAY within 2-5 seconds
after the key displayed.
|
“SYSTEM
ARMED”
|
|
7
|
Press
COMM TEST.
|
“COMM
TEST PASSED” indicates test successful
|
|
8
|
Press
EXIT.
|
Returns
to Operational Menu.
|
|
9
|
Comply
with remainder of Section 3,
Rules 17.5 and 17.6.
|
|
Note: Refer to Section 10, Rule
4.6 on page 160 for SD90MAC/6000 CP 9300—9303.
When installing an SBU, ensure that the two urethane
contact feet are firmly seated against the coupler casting and that the SBU is
equally seated above and below the casting holes.
After firmly tightening the clamping screw handle, turn it
to the vertical position, close the locking bracket and install a lock if
available.
Prior to making the glad hand coupling, open the rear
angle cock slightly to remove any moisture or debris and then connect the SBU
glad hand to the brake pipe hose of the rear car and fully open the angle cock.
The following procedures will apply when arming the SBU
Model #6651 with the head-end display unit:
a)
Couple brake pipe to the SBU and observe brake
pipe pressure through the viewing window on the SBU by pressing the test
button.
b)
When sufficient brake pipe pressure has been
reached for the air brake test, the engineer or other qualified employee on the
controlling locomotive will be advised of the brake pipe pressure at the rear
of the train.
c)
The engineer or other qualified employee will
verify that the head-end display unit is within 3 psi of brake pipe pressure
displayed at the SBU and notify the employee at the SBU of the results.
d)
When ready to arm the SBU, the engineer or other
qualified employee will notify the employee at the SBU that they are ready to
arm the SBU.
e)
The employee at the SBU will press the test
button on the SBU to initialize the arming feature.
Model #6695 SBU is equipped with a 5-menu display. They are:
·
“PRESSURE”
·
“ARM”
·
“TEST”
·
“PHOTOCELL”
·
“LITE”
The test button must be pressed and held until the display
shows the feature desired. When the
desired feature is displayed, immediately release the button to activate the
feature.
The following procedures will apply when arming the SBU
Model #6695 with the head-end display unit:
a)
Couple brake pipe to the SBU
b)
Set the display to show “PRESSURE” and observe
brake pipe pressure through the viewing window on the SBU by pressing the test
button.
c)
When sufficient brake pipe pressure has been
reached for the air brake test, advise the engineer or qualified employee on
the controlling locomotive of the brake pipe pressure at the rear of the train.
d)
The engineer or qualified employee will verify
that the head-end display unit is within 3 psi of brake pipe pressure displayed
at the SBU and notify the employee at the SBU of the results.
e)
When ready to arm the TIBS the engineer or
qualified employee will notify the employee at the SBU that they are ready to
arm the SBU.
f)
The engineer or qualified employee will press
and hold the TEST button until the
“ARM” feature appears. Releasing the
test button when the word ARM appears will start the ARMING sequence.
To activate the emergency-braking feature, lift the red
safety cover located on the right side of the display unit and move the EMERGENCY toggle switch upwards. This will cause the emergency valve of the
SBU to which the system is armed to be activated.
If communications problems are suspected, continuity may
be tested by pressing the COMM TEST
button. When the button is pressed a “ +
” or a reply pending light will appear briefly.
Disappearance of either of these indications verifies continuity of
communications. Locomotives equipped with an IFD will display “Comm Test
Passed”.
If the “ + ” symbol, or a reply pending light remain
displayed, the COMM TEST button must
be pressed three times in rapid succession.
If this fails to overcome the problem the train should be moved one
train length and the test repeated.
If communications problems are suspected, continuity may
be tested by pressing the COMM ARM
button. When the button is pressed a “Waiting For Reply” message is briefly
displayed on the function menu display followed with brief message “COMM Test OK”.
If the function menu display reads “COMM Test Failed” for
2 seconds, the COMM ARM button must
be pressed three times in rapid succession. If this fails to overcome the
problem the train should be moved one train length and the test repeated.
Note: A manual Comm Test must be performed at run
through locations to verify TIBS is operating as intended.
See
Section 3, Rule 19.5
The method used to perform a COMM TEST on SD90MACs with an
ICE screen is accomplished by selecting the EOT screen and momentarily changing
the SBU number so that the COMM TEST
button will be displayed.
Example:
Step 1.
Select the EOT screen and the following information will be displayed:
|
|
|
|
|
|
ENTER
|
EOT
|
EXIT
|
|
8
|
0
|
8
|
9
|
0
|
INDENT
|
00000
|
|
Step 2. Momentarily change one of the digits in the
SBU number, so that the COMM TEST
key will be displayed:
|
|
|
|
|
|
ENTER
|
COMM
|
EXIT
|
|
9
|
0
|
8
|
9
|
0
|
INDENT
|
TEST
|
|
Step 3. Press the COMM TEST button and the screen will display “COMM TEST IN
PROGRESS” and finally “COMM TEST PASSED”.
Step 4. Press EXIT
to return to Operational Menu. DO NOT press the ENTER IDENT button, as this will change the SBU number in the
locomotive computer system.
The display units, models 6653, 6656 and 6696, will automatically
detect and display warnings accompanied by an audible alarm for some or all of
the following conditions:
·
Rear-to-Front Communications Failure.
·
Front-to-Rear Communications Failure.
Note: After a brief interval, the display will
revert to normal pressure display, accompanied by a “<-” or “F-> R NO COMM” and remain until
continuity is restored.
·
Emergency Valve Circuit failure.
Note: The display will then revert to displaying
normal readings, accompanied by either a “ V
“or a steady valve fail light.
Note: If any Valve Fail alarms are experienced, the
emergency braking feature must be considered inoperative. Employees will then be governed by
instructions included in Section 3, Rule 17.2.
·
No air.
·
Telemetry battery weak.
·
Replace telemetry battery.
·
Replace HVM battery.
·
Low pressure.
·
Not armed.
·
The displays “Service”, “No Data” or “I/O ERR” indicates that the display unit is
faulty and requires servicing by qualified personnel.
On locomotives equipped with
an IFD, possible alarm displays are:
|
1
“EOT COMM”
|
Will display yellow when a condition of front to
rear or rear to front communication failure exists. Rear pressure display
will show “***(red)”.
|
|
2
“EOT EMERG STATUS DISABLED”
|
Locomotive engineer take note, another alarm
indicator may be lit.
|
|
3
“EOT BATT”
|
Will display yellow if SBU battery is weak.
Will light red if SBU battery is dead. Rear pressure display will show “***(red)”.
|
|
4
“EOT VALVE”
|
Will light yellow if SBU Valve Circuit fails. Rear pressure display will show “***(red)”.
|
|
5
“REAR”
|
Last car pressure display white if over 45 psi, last
car pressure displays red if below 45 psi.
|
The display unit will indicate the initial direction of
movement with either a small arrow or a light.
Forward direction is indicated by a light or by an arrow pointing
towards the right of the display unit.
Indication of motion/direction will be replaced with a double arrow “<>” or a light indicating continuous
motion. When the train is stationary,
this is indicated by a light or two horizontal bars “- -” in the motion field.
On locomotives equipped with an IFD, possible indications
are “FWD”, “REV” and “STOP”.
The display unit will indicate the initial direction of
movement with message “Forward” or “Reverse” on ID code display. The message will flash for 10 seconds, then
continues steady for another 10 seconds. The moving status light will be lit.
When installing an SBU, ensure that the two urethane
contact feet are firmly seated against the coupler casting and equally seated
above and below the casting holes.
After firmly tightening the clamping screw handle, turn it
to the vertical position, close the locking bracket and install a lock or hook.
Prior to making the glad-hand coupling, open the rear
angle cock slightly to remove any moisture or debris. Connect the SBU glad-hand to the brake pipe
hose of the rear car and fully open the angle cock.
SBU Model 6651 has the following features:
The SBU self-activates when brake-pipe pressure rises to 10
psi. When the pressure is less than 5
psi. for a period of 5 minutes the SBU will automatically shut down to conserve
the battery.
A viewing window on the SBU allows employees to view the
brake-pipe pressure display for a period of 5 seconds, any time the external
test button is pressed.
Pressing the test button initializes the arming feature.
Indications, which the SBU is capable of displaying and
their meanings, are as follows:
|
Display
|
Indication
|
|
“1 JXX”
|
(e.g.: 1 J20) indicates normal power up sequence.
|
|
“ROM”
|
Indicates that the SBU has detected an internal
fault and must be removed for servicing.
|
|
“075”
|
Indicates normal pressure display of
75 psi.
Note: The value displayed here is an example of a
SBU pressure reading
|
|
“99%”
|
Any number preceding the % symbol indicates the
timed battery charge remaining. If the
percentage falls below 50% the batteries must be changed out.
|
|
“W50%”
|
Indicates the battery is weak and has approximately 12
hours of operating life remaining.
|
|
“R40%”
|
Indicates imminent battery failure and that the
battery may not last until the next regular scheduled change-out point.
|
|
“A20%”
|
Indicates that the battery has failed and that the
SBU will not transmit.
|
Note: If displays other than those listed above
appear, the SBU must be removed for servicing.
Use of the TEST
button after initial power up, will result in pressure and timed battery charge
displays only.
Note: Regardless of the percentage of timed battery
charge remaining, the batteries must be changed out at any time the display
indicates “W”, “R” or “A”. Each time a
battery is first installed, the display will indicate “99%” as it is based on
time and not on voltage. It is possible
to have a “W99%” display in which case the batteries must be changed out.
SBU, Model 6695 has the following features:
a)
The HVM on Model 6695 is incorporated into the
unit.
b)
The unit will require two batteries to
operate. These batteries are connected
together to provide power to the HVM and SBU electronics. Both batteries must be changed at the same
time and are of the same type as used on the Digitair model.
c)
The display window and the photoelectric cell
have been combined to one location on the SBU.
d)
The TEST
button operation has been changed. This
change requires certain items in the SBU operating instructions to be revised.
The Model 6695 SBU is equipped with 5 menu items as listed
below:
·
“Pressure”
·
“Arm”
·
“Test”
·
“Photocell”
·
“Lite”
The TEST button
must be pressed and held until the display shows the feature desired.
Immediately release the button to activate the feature displayed.
|
Display
|
Definition
|
|
Pressure
|
Releasing the test button when the word “Pressure”
appears allows you to read the brake pipe pressure. The display will scroll “PRESSURE ###”
where ### is the air pressure in psi.
|
|
Arming
|
Releasing the test button when the word “Arm”
appears will start the arming sequence.
The IDU display in the locomotive will sound an alert tone and display
“Arm Now” for 5 seconds, prompting the locomotive engineer to press the TEST button on the IDU.
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Test
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Releasing the TEST
button when the word “Test” appears will start a self-test. The SBU display will scroll the following
items during the test.
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CANADIAN PACIFIC RAILWAY DIGITAIR
REV 5.
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Indicates equipment owner and software version.
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Display
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Definition
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BATTERY OK ###
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Indicates the batteries are OK and have between 39%
and 99% of the charge remaining. (The
## will replace the % of battery life remaining)
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BATTERY LO ##
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Indicates the batteries are low and have between 12%
and 39% of the charge remaining. (The ##
will replace the % of battery life remaining) When “LO” is displayed, both
batteries must be changed.
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BATTERY WEAK
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Indicates the batteries are less than 12% and must
be replaced.
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BATTERY REPLACE
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Indicates the time the battery is expected to operate
has been exhausted and batteries must be changed.
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SELF TEST GOOD
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Indicates the SBU is functioning properly. If not displayed or an error message is
displayed, the unit must be removed for servicing.
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PRESSURE P ###.
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Indicates the brake pipe pressure (where ### is the pressure). Will be
displayed for 30 seconds.
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PHOTOCELL
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Releasing the TEST
button when the word “PHOTOCELL” appears allows you to test the HVM
operation. Pressing the TEST
button again ends the test.
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LITE
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Releasing the TEST
button when the word "LITE" appears will activate a feature where
the HVM will continue to flash with no air pressure and light present. THIS
FEATURE IS NOT USED ON CPR. If
selected by mistake, lay the SBU gently on its side to deactivate.
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Note: HMV will flash for 30 seconds.
During pre-installation and testing of the Model 6695 at
other than major terminals or at locations not equipped with an air supply and/or
test CLU/IDU, the following pre-installation tests must be performed to verify
the SBU is operating as intended:
a)
Install fully charged batteries.
b)
Depress the TEST
button and release when the display indicates "Test" and observe the
test procedure.
c)
Ensure the display indicates “Self Test Good”
and does not indicate “Battery LO ##”, “Battery WEAK ##”, or “Battery Replace”.
Enhanced train consists will indicate when a train is
equipped with a Model 6695 SBU.
SBUs in the ID number series CPT-85318 to CPT-85368 and
CPT-85806 to CPT-85813 are stenciled with “NOT PERMITTED OFF LINE” on the side
frame panel. These units are NOT to be
used on trains or transfers going to foreign carriers. This restriction does
not apply to trains temporarily detoured over foreign railways due to track
closures or emergencies.
During installation of the Display Unit, the radio circuit
breaker must be placed in the OFF position until such time all power and
antenna connections have been made.
When making these connections, it must be ensured that the
keyway in the connector is properly aligned with the key on the display unit
before twisting to the locked position.
It must be known that the display unit is operating as
intended. Test SBUs bearing the test ID
code of 00000, are located in diesel shops at major terminals.
Note: On locomotives equipped with an IFD, do not
attempt the shop track “00000 test”.
To test the display unit, the following series of
functions must be performed in the following order:
a)
Enter the test ID Code “ 00000”.
b)
Place the radio circuit breaker in the OFF
position.
c)
Place the radio circuit breaker in the ON
position.
d)
Observe the following sequence of displays;
e) “DIGITAIR”.
·
“JXX” (e.g.: J20).
·
“**** ****” displayed
with all screens lit (or three dashes “ - - -” in the pressure field).
Note: Prior to transmitting a COMM test command,
if the display unit displays other than listed above, it is indication that
another display unit is being tested. If
this should occur you must wait for the display to indicate “No Air” prior to transmitting a command from
the equipment you are testing.
f)
Perform a COMM test, which will cause the test
SBU to be activated and transmit a series of displays and alarms.
g) Once
the COMM test is initiated, observe the display unit, noting that displays and
alarms appear in the following order:
·
“Armed”.
·
Pressure display of
“125 psi” and marker light displaying an ON indication.
·
Pressure display of
“100 psi”.
h)
The emergency feature must be activated
immediately upon display of 100 psi.
This will cause the following displays:
·
A “*” in the COMM field and “100 psi” (or reply pending light and 100 psi)
·
“Low Pressure”
·
“Brake Pipe Pressure”
·
“No Air”
Note: Once the display of “No Air” is given, the
display unit is to be considered operating as intended. When departing the shop track the ID code of the
SBU assigned to that train must be entered.
On
trains, which originate at locations not equipped with test SBU’s, the
following test sequence must be performed to confirm the Display Unit is operating
as intended:
a) Set and arm the display unit to ID Code “ 80000”.
b) Place the radio circuit breaker in the OFF position.
c) Place the radio circuit breaker in the ON position.
d) Observe the following sequence of displays:
· “DIGITAIR”
· “JXX” (e.g. J20)
·
« **** ****”
display with all screens lit (or three dashes “- - -” in the pressure field)
Note: Once the locomotive(s) are on the train, the
display unit must be armed in accordance with subsections 2.0 and 15.0. At
run-through points, a COMM test must be performed to verify the TIBS is
operating as intended.
14.0 Battery Change-Out Procedure
When
changing batteries on the SBU the following procedure must be used:
a) Open the SBU battery compartment cover, remove the tethered
battery retaining nut and pull the battery straight out.
b)
Battery
installation is the exact reverse order of the above.
Note: When batteries are being installed, care
must be taken to ensure the battery is inserted correctly so as to prevent damage
to the battery contact pins and to ensure that the battery retaining nuts are
not cross threaded or tightened with too much force.
The DMD enables train crew to determine the location of
the rear car of the train in relation to any given reference point at which the
counter is activated.
Note: To allow for slack action within the train,
when entering the train length into the DMD, the train length plus the 3%
factor must be used. Should the train
length change en route, due to a pick-up or set-out, crews are responsible to
ensure the train length entered into the DMD is adjusted accordingly and that
such information passed on to succeeding train crews.
Signs marking out accurate measured miles are erected on
each side of each regular scheduled crew change location to permit train crews
on outbound trains to verify the accuracy of the DMD. To verify calibration of the DMD, a crewmember
will activate the DMD at the designated start of the measured mile (“0” indication sign), and deactivate the
DMD at the end of the measured mile (“1”
indication sign). Adjusting the train
length entered must compensate for any discrepancies noted in the calibration
test.
Note: Should the DMD become inoperative at any
time, the crew must use their discretion and travel extra distance if necessary
to insure that the train has cleared any point of restriction.
The ODOM key on
SOO equipment controls the odometer feature.
The odometer count appears on
the numeric display as the distance traveled in feet. The alphanumeric display indicates that the
odometer is active by displaying “Odometer”.
·
The first press of the ODOM key resets it and activates the counter.
·
The second press of the ODOM key freezes the count showing the total distance traveled in
feet.
·
The third press of the ODOM key clears the odometer count and reverts the CDU back to its
previous mode (example, “ID” mode).
The HVM is powered by nickel-cadmium batteries and
controlled by a photoelectric cell. The
OFF/ON status of the HVM is indicated on the display unit in the locomotive
cab.
To perform a manual test on the HVM, the SBU must first be
powered up. During daylight hours, in
order to activate the light, the photoelectric cell must be covered. This test will only be performed at the
location where the SBU is initially installed on the train.
The HVM will self-test when a train has been standing for
at least 30 seconds, and then starts moving.
During daylight hours, a marker light “On” indication will appear
briefly on the display unit. During
darkness, the photoelectric cell will keep the HVM activated continuously. Failure to operate as described above will
indicate either of the following problems:
a)
If the marker light “On” indication does not
appear with first movement, the HVM may be defective.
b)
If the “Replace Battery” indication is
displayed, the batteries may be too weak to turn the light on.
