3–8 869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
FRONT CONTROL PANEL INTERFACE CHAPTER 3: INTERFACES
• IN SERVICE:
– Green color = Relay powered up, passed sel
f-test has been programmed, and
ready to serve. This LED indicates that control power is applied, all monitored
inputs, outputs, and internal systems are OK, and that the device has been
programmed.
– Red color = Relay failed self test, has not been programmed, or out of service
• TRIP:
This LED indicates that the element selected to produce a trip has operated. This
ind
icator always latches; as such, a Reset command must be initiated to allow the
latch to be reset.
• AL
ARM:
This LED indicates that the FlexLogic™ operand serving as an Alarm switch has
operat
ed. Latching of the indicator depends on the selected protection function. A
Reset command must be initiated to allow the latch to be reset.
• PI
CKUP:
This LED indicates that at least one element is picked up. This indicator is never
latc
hed.
• TEST M
ODE
This LED indicates that the relay has been set into Test Mode.
• MESSA
GE
This LED indicates the presence of Target Messages detected by the relay.
Breaker status indication is based on the breaker’s 52a and 52b contacts. With both
contac
ts wired to the relay and configured, closed breaker status is determined by closed
52a contact and opened 52b contact. Vice-versa the open breaker status is determined by
opened 52a contact and closed 52b contact. If both 52a and 52b contacts are open, due
to a breaker being racked out from the switchgear, both the Breaker Open and Breaker
Closed LED Indicators will be off.
The Event Cause indicators in the first column are described as follows:
Events Cause LEDs are turned ON or OFF by protection elements that have their respective
tar
get settings selected as either “Self-Reset” or “Latched”. If a protection element target
setting is “Self-Reset”, then the corresponding Event Cause LEDs remain ON as long as the
operate operand associated with the element remains asserted. If a protection element
target setting is “Latched”, then the corresponding Event Cause LEDs turn ON when the
operate operand associated with the element is asserted and will remain ON until the
RESET button on the front panel is pressed after the operand is reset.
Default labels are installed on every 869. A custom LED template is available for editing
and printing,
refer to publication GET-20035 from
http://www.gegridsolutions.com/multilin.
The default labels can be replaced by user-printed labels. User customization of LED
operation has maximum benefit in installations where languages other than English are
used to communicate with operators.
FAST PATH:
For LED and Pushbutton programming details, please refer to Section 4: Setpoints > Device
> Front Panel.
Home Screen Icons
The next figure shows the icons available on the front screen. For descriptions of these
screen icons see the following tables.
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