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3 Operating the SAMMS-MV Device
F8 - Autoreset (SAMMS-MVX Only)
1.Press the LIST key to view the active autoreset setting, either
ON or OFF. If autoreset is ON, the SAMMS-MV device
automatically resets 30 seconds after an overload or exter-
nal trip. At this time the motor can start. If autoreset is OFF,
you must manually reset the overload relay with the Reset/
Test button before restarting the motor. The factory default
is OFF.
2.To change the setting, you must be in program mode.
3.To change the setting, press the UP or DOWN key to select
the new setting.
4.Press and hold the ENTER key. If the displayed setting is
ON, go to step 6. If the displayed setting is OFF go to step
5.
5.Release the ENTER key while the display appears blank.
When you release the key, the setting changes to OFF. Go
to step 6.
6.Release the ENTER key. SUrE appears on the display.
7.Press the ENTER key to make the change to ON.
Note: The reason for displaying SUrE and requiring you to
press the ENTER key a second time is because the motor can
restart immediately after an overload trip if autoreset is ON.
8.If you made an incorrect selection, repeat steps 3 through
7.
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 the display mode.
10.Press the (F)unction key to step through other functions.
F9 - Phase Unbalance Protection
1.Press the LIST key to view the active phase unbalance
protection setting (ON or OFF). The factory default setting is
ON.
a.When phase unbalance protection is enabled (ON), cur-
rent unbalances of greater than 40% accelerate overload
tripping. The Phase Unbalance LED flashes for unbal-
ances between 20% and 40%. It remains steadily illumi-
nated for unbalances greater than 40%.
b.When phase unbalance protection is disabled (OFF), the
Phase Unbalance LED remains off, unbalanced condi-
tions have no effect on protection, and F17 (Display
Unbalanced Current) displays OFF.
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.
F10 - Display Time to Restart
1.Press the LIST key to view the time remaining before the
motor can be restarted. The time is displayed in seconds.
While the motor is cooling, the time to restart counts down
from the maximum winding or rotor temperature allowed to
the steady-state, full-load temperature. The display is al-
ways zero if the motor is not in a start inhibit mode. If a time
to restart displays, the motor can only be restarted by an
emergency restart (see F11).
2.The UP, DOWN, and ENTER keys are disabled.
3.Press the (F)unction key to go to other functions.
F11 - Emergency Restarting
1.Press the LIST key to view the emergency restart setting (ON
or OFF). The factory default is OFF. With emergency restart
enabled (ON), you can restart the motor after the overload
relay is reset (manually or automatically), even when the time
to reset is not zero. When you initiate an emergency restart,
the motor conditions are reset to zero to simulate a com-
pletely cold start. The emergency restart function is auto-
matically disabled after any restart (emergency or normal),
and you must manually re-enable the emergency restart
function by setting F11 to ON.
2.Emergency restart can be enabled in either the program
mode or the display 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. If the selected setting is ON, skip to Step 5.
4.If the selected setting is OFF, the display blanks while the
ENTER key is pressed. When the ENTER key is released, the
setting is changed to OFF. Skip to Step 6.
5.If the selected setting is ON, SUrE is displayed when you
release the ENTER key. Press ENTER again to make the
change to ON.
Note: The motor can be damaged if restarted before it is
allowed to cool. The SUrE display allows you to reconsider