3 operating the samms-lv device – Siemens MCC-3298 User Manual

Page 37

3 Operating the SAMMS-LV Device

F12A - Ground Fault Pickup Current

1. Press the LIST key to view the active ground fault pickup

current in use. The range of values and default values are

shown in the table below:

Size

Pickup Current

Range

Default Pickup

Current

1.5A

2A to 5A

2A to I

10A

2A to I

10A

2A to I

10A

2A to I

10A

5A to I

10A

10A to I

20A

* I

FLC

is the value of I

FLC

for OLR#2 if F3 is not set to OFF. If F3 is

OFF, I

FLC

is the value of I

FLC

for OLR#1.

2. To change the setting, you must be in program mode.

3. To change the setting, press the UP or DOWN key to display

the setting options, then press ENTER to select the setting

that is shown. The display blanks while the ENTER key is

pressed.

4. Repeat Step 3 if you select an incorrect setting.

5. 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 the display mode.

6. Press the (F)unction key to go to other functions.

F13 - Set Programmable Timer #1

1. Press the LIST key to view the active setting for timer #1. The

default setting is OFF. If the timer is not used in the control

circuit, OFF is displayed and the UP, DOWN, and ENTER

keys are disabled. OFF is also displayed for a setting of 0

seconds. The timer may be adjusted from 0 - 200 seconds

in one second increments.

2. To change the setting, you must be in program mode.

3. To change the setting, press the UP or DOWN key until the

desired value is displayed then press the ENTER key to

select the setting. The display blanks while the ENTER key

is pressed.

4. Repeat Step 3 if you select an incorrect setting.

5. 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 the display mode.

6. Press the (F)unction key to go to other functions.

F14 - Set Programmable Timer #2

1. Press the LIST key to view the active setting for timer #2. The

default setting is OFF. If the timer is not used in the control

circuit, OFF is displayed and the UP, DOWN, and ENTER

keys are disabled. OFF is also displayed for a setting of 0

seconds. The timer may be adjusted from 0 - 200 seconds

in one second increments.

2. To change the setting, you must be in program mode.

3. To change the setting, press the UP or DOWN key until the

desired value is displayed then press the ENTER key to

select the setting. The display blanks while the ENTER key

is pressed.

4. Repeat Step 3 if you select an incorrect setting.

5. 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 the display mode.

6. Press the (F)unction key to go to other functions.

F15 - Display Current

1. Press the LIST key to view the instantaneous line currents or

the average instantaneous line current. (The LIST key is

disabled for full voltage, part-winding starters.) For instanta-

neous line currents, the display shows the phase designator

(A, b, or C) in the left-most character followed by three

significant digits of the value of the current. For the average

instantaneous line current, four digits are displayed without

a phase designator.

a. Because only four characters can display at a time,

individual line currents of 1000 amps and above are

displayed as three dashes following the phase designa-

tor, e.g., A - - -.

b.For sizes 1A, 1B, and 1C, the current is displayed to the

nearest 0.1 amp for currents less than 100 amps; for 100

amps and above, currents are displayed to the nearest 1

amp. For sizes 2A, 2B,3, 4, and 5, the current is displayed

to the nearest 1 amp. For size 6, current is displayed to the

nearest 2 amps.

2. To view another line current, press the UP or DOWN key to

scroll through the four selections.

3. The ENTER key is disabled for this function.

4. Press the (F)unction key to go to other functions.

F16 - Trip Current

1. Press the LIST key to view the value of the current that

caused the most recent trip.

2. The UP, DOWN, and ENTER keys are disabled for this

function.

3. Press the (F)unction key to go to other functions.

FLC