ABB AMVAC Installation And Operation Manual page 36

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LECTRONIC ONTROL
Second Trip (KM1005, CH 4, Pins 7 and 8)
This input can be configured as either a Protection Trip or Second Trip function. It is programmed via Jumper
JP1001 Pins 1 and 2 or as a normal input by jumping JP1001 pins 2 and 3.
The Protection Trip input is designed to work at a lower threshold of 7 VDC. This input is provided to be used
with special protection relay requirements. It can also be used as a normal trip input.
The Second Trip is often referred to as "Shunt Trip." It functions the same as the Remote Input with the ex-
ception of the input impedance which is 300 kOhms.
Lock Circuit Breaker Open (KM1005, CH 6, Pins 11 and 12)
The Circuit Breaker Locked Open feature functions with the closed blocking circuit. When control power is
applied and the closed blocking switch (located in the truck on Removable breakers only) is closed, power is
supplied to this input to allow the breaker to function normally. When power is supplied to breaker and re-
moved from this input by the opening of the closed blocking switch (during racking, i.e. if truck is in intermit-
tent racking position), the
to the closed position until this input has power restored to it
breaker is in the Test or connected positions). On fixed breakers control power is supplied to pins 11 and 12
via jumper wires on the wiring harness.
Under Voltage Trip (KM1005, CH 7, Pins 13 and 14)
The Under Voltage Trip input will perform an auto trip in the event the voltage source being monitored by this
input falls between 35% to 70% of nominal. It is enabled through DIP Switch I1004/2-3-4. The response of
this input also has a programmable time delay from 50 milliseconds to 5 seconds. The delay is set by the vari-
ous combinations of DIP Switch I1004/2-3-4 (see section 8.0). The Under Voltage Threshold is set by I1001.
See page 40 ED2.0 board for switch location and settings.
If Dip Switch I1004-1 is set to the "on" position and then power is removed from the unit, the breaker will
automatically trip in approximately 3 minutes. Make sure personnel and tools are cleared from breaker pri-
or to the removal of power from unit, due to risk of death or serious bodily injury.
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OARD
breaker goes into the Open Lock Mode. During this mode the breaker cannot return
1VAL050601-MB Rev C
(i.e. the closed blocking switch is Closed and