User manual

Operation 39
Emerson Energy Systems MFA150 Power System  NT6C28C User Manual
Table 18 – Visual indicators
Designation Description Color
EQL To indicate that the equalize function is activated. yellow
RFA MIN To indicate a minor rectifier failure alarm. yellow
RFA MAJ To indicate a major rectifier failure alarm. red
FA To indicate a fuse and circuit breaker alarm. red
LVD ALM* To indicate a low voltage disconnect alarm. red
TST BYPASS To indicate that the LV alarm and LVD alarm and
control adjustment circuits of the controller card are
in the test mode and, if provided, that the LVD
contactor is placed in the bypass mode for
maintenance purposes.
red
LV ALM To indicate a low voltage alarm. red
Note: * See the Note in the “Front of the NT6C14GA/GM
and NT6C14GP control and distribution panels”
section.
Switches
There are three switches to control the functions described in Table 19.
Table 19 – Switches
Designation Description
EQL OFF/ON Used to activate and deactivate the equalize function of
the rectifiers.
NORMAL/BYPASS Used to place the LV alarm and LVD alarm and control
adjustment circuits of the controller card in the test mode
for adjustment purposes, and, if provided, the LVD
contactor in the bypass mode in order to prevent
accidental release of the LVD contactor during test and
maintenance routines.
VOLTS/AMPS Used to select the system current or voltage on the
display.
Dip switches
There is one six-position DIP switch module on the controller card to
activate and deactivate rectifier sense leads 1 to 6.
Potentiometers
There are four potentiometers for the adjusting the functions described in
Table 20.