Siemens MCC-3298 - Manual (Page 28)

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3 Operating the SAMMS-LV Device
3.27.1 The (F)unction Key
When you press the (F)unction key, the function mode is
selected and the HHC displays the number of the selected
function preceded by F. With the HHC in the function mode, use
the UP and DOWN keys to step from one function to the next.
3.27.2 The LIST Key
When you press the LIST key, the display mode is selected and
the HHC displays the value corresponding to the selected
function. If the selected function is a set point, the HHC displays
the actual setting. If the selected function is a measured
quantity, the HHC displays the value of the measured quantity.
In the display mode, use the UP and DOWN keys to step
through the range of possible set points for the selected
function. Pressing the LIST key returns the active setting to the
display.
There is one occasion when the LIST key is disabled making the
corresponding functions inoperative. In a SAMMS-LV device
with autoreset disabled at the factory, the LIST key has no effect
for F8.
3.27.3 UP and DOWN Keys
Use the UP and DOWN keys to step through the functions while
the HHC is in the function mode. When the HHC is in the display
mode, use the UP and DOWN keys to step through the values
for a selected function. You can use the keys in three ways:
1. Single step - press the key and release it.
2. Slow scroll - press the key and hold the key down for no
longer than two or three seconds.
3. Fast scroll - press the key and hold the key down long
enough for the HHC to step through more than five steps.
The following information discusses how to operate the UP and
DOWN keys in the function and display modes.
1. In the function mode, the UP key increases the function
number by one and the DOWN key decreases the function
number by one. If F0 appears on the display, pressing the
DOWN key rolls the function over to the highest-numbered
function, F27. If the highest-numbered function (F27) ap-
pears in the display, pressing the UP key rolls the function
over to the lowest-numbered function (F0).
2. In the display mode, use the UP and DOWN keys to step
through the range of settings for each set point function. You
also use the UP and DOWN keys to step through the
individual line currents and the average line current of F15.
Just as the UP and DOWN keys cause the function numbers
to roll over, they also cause the range of settings to roll over.
3.27.4 Using the ENTER Key
Use the ENTER key to change settings on the HHC display. The
SAMMS-LV device disables the ENTER key under the following
conditions:
1. The ENTER key is disabled while the device is in the function
mode.
2. The ENTER key is disabled for non-setting functions that
display a parameter.
3. The ENTER key is disabled while the motor is running to
prevent settings from being changed while the motor is
running.
Use the following procedure to change a setting. This example
shows you how to change the full-load current setting from
112A to 67A.
1. With the HHC in the program mode (see section 3.28.1),
press the (F)unction key. The display shows the number of
the function most recently selected, (e.g. F9).
2. Use the UP or DOWN key (as described above) to step or
scroll to the desired function. The display shows the desired
function, (e.g. F4).
3. Press the LIST key. The display shows the active setting for
the selected function, (e.g. 112, representing a full-load
current setting of 112A for a motor controlled by a size 4
contactor.)
4. Use the UP or DOWN key (as described above) to step or
scroll to the desired setting. The display shows the desired
setting, (e.g. 67 for 67A).
5. To enter the desired setting (67) which is displayed, press
the ENTER key. The display becomes blank while you hold
down the ENTER key and the SAMMS-LV device stores the
new setting.
6. Press the LIST key to show the new setting (67) on the
display.
7. To move to the other functions, press the (F)unction key. The
display shows, in the example, F4.
8. Press the UP and DOWN keys to step through the function
numbers. The SAMMS-LV device is in the function mode.
9. To exit the program mode, press and hold the (F)unction key
for several seconds. The display will show “Prog.” Press the
UP or DOWN key to change to display mode.