Operation - National Railway Supply ERB-C 12/201 Installation, Operation And Service Instructions

adhesion, the battery surface must be cleaned with
isopropyl alcohol. Ideal application temperature
range is between 70 and 100°F. Initial application to
surfaces at temperatures below 50°F is not
recommended. Under cold conditions, the surface
should be warmed before application.
properly applied, low temperatures will not affect the
bond strength.
Remove the adhesive's protective strip and press
the probe firmly against the battery to ensure good
adhesion.
Securely fasten the temperature probe cable to
protect the probe from being torn from the
battery. Secure the probe's cable to a fixed object
to ensure the probe will not be pulled loose. Use a
cable tie mount on the battery or on the adjacent
battery, if necessary.
8. BATTERY SENSE CABLE
A unique feature of charger models 12/501 and
24/301 is that a battery sense cable may be used to
monitor the battery voltage.
problem of compensating for the voltage drop in the
DC cord, thus delivering to the charger a more
accurate voltage reading. Connect the red wire to
the positive battery post and the black wire to the
negative post. If more wire is required to reach the
battery terminals, simply splice in more wire (22
AWG or larger). BE SURE THE BATTERY SENSE
CABLE IS DIRECTLY CONNECTED TO THE
BATTERY POSTS. If the battery sense cable is to
be used, set Function 23 to "2".
WARNING: NEVER DISCONNECT THE
BATTERY SENSE CABLE WHEN THE CHARGER
IS OPERATING OR DAMAGE TO THE CHARGER
COULD OCCUR.

9. OPERATION

The battery charger is operated with the four buttons
on the front of the charger. The buttons are used for
two different modes of operation:
FUNCTIONS and PROGRAMMING FUNCTIONS.
The charger also has a three-digit display used for
showing charge data and programming function
values. If the charger is off (with AC power on), the
entire display will blink. When the charger is on and
none of the buttons are pressed for over one hour,
the display will turn off except for a small dot in the
lower right hand corner (see Function 14).
problem is detected by the charger, the dot in the
lower right hand corner will flash very fast. To stop
this blinking, clear the error codes (see Function 17).
www.nationalrailwaysupply.com
Once
This eliminates the
DISPLAY
If a
9.1 Display Functions
The labels on the right side of the buttons are for the
display functions. When the charger is running and
is not in the programming mode, pushing one of the
buttons will display data about the charge cycle.
9.1.1 Voltage
When the voltage button is pressed and held, the
display will read the voltage present at the charger
terminals. If the button is pushed and released, it
displays the voltage present at the battery terminals.
The latter operation is in effect only if there are no
errors and sample hold is set to 0 for model 12/201,
and 0 or 2 for models 12/501 and 24/301 (see
Function 23).
9.1.2 Current
Pressing the current button will display the current
being provided by the charger to the load.
9.1.3 Temperature
When the temperature button is pressed and held,
the display will show the internal temperature of the
charger (Function 15). When the button is pressed
and released (if an external temperature probe is
used), the display will show the temperature of the
batteries.
9.1.4 Start/Stop
The bottom button is the START/STOP button,
which toggles the charger's output ON and OFF. If
Function 18 is set ON (1), the stop switch cannot be
used to turn off the charger's output. If the charger
is OFF, the display flashes. The programming mode
is accessible while the charger is OFF.
9.2 Programming Functions
To operate the battery charger in the programming
mode, use the labels on the left side of the buttons.
From the top down, the button functions are: UP,
DOWN, CLEAR and ENTER.
programming mode, follow the steps below:
(a) Press and hold the UP button in, then press and
release, in order, the CLEAR, DOWN, and
CLEAR buttons.
Response: The display will respond by showing
"888".
(b) Release the UP button, then press and release
ENTER.
Response: The display will first show the EPROM
revision number, then "..1" (the first function
number) will be shown after the ENTER button is
pressed and released.
(c) Use the UP and DOWN buttons (function
numbers move up or down in numerical order)
to select the function that is to be executed or
programmed. The display will show the function
number, which moves once for each push of the
4
To use the
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