Murphy EMS-GC10, Operator'S Manual

Page: 62 / 183

Section 75 00-02-0878
2013-03-07 - 56 -
Different breaker types are used, and therefore there are two available solutions:
Timer-Controlled
A load time setpoint for the GB and MB control for breakers with no feedback indicating
that the spring is loaded. After the breaker has been opened it will not be allowed to
close again before the delay has expired. The setpoints are found in parameters listed:
Parameter
GB 6231, 6232
MB 7082, 7085
Digital Input
Two configurable inputs to be used for feedbacks from the breakers: One for GB spring
loaded and one for MB spring loaded. After the breaker has been opened it will not be
allowed to close again before the configured inputs are active. The inputs are
configured in the utility software. When the timers are counting, the remaining time is
shown in the display.
If the two solutions are used together, both requirements are to be met before closing of
the breaker is allowed.
Breaker LED Indication
To alert the user that the breaker close sequence has been initiated but is waiting for
permission to give the close command, the LED indication for the breaker will be
flashing yellow in this case.
If the breaker needs time to reload the spring after it has opened, then the controller
unit can take this delay into account. This can be controlled through timers in EMS-
GC10 or through digital feedbacks from the breaker, depending on the breaker type.