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2 PRODUCT DESCRIPTION
2.8USER INTERFACE
There are 6 LED Targets in the front of the relay. The first one is green ('READY' -relay in service-) and cannot be
configured; the second one is red and fixed for trip, while the other 4 can be configured by the user in OPTION1 and
OPTION2 models. The default configuration of the LEDs is shown in the following figure.
It is possible to configure the color of the 4 configurable LEDs between red and green using the keypad of the front panel of
the relay (for details, refer to Chapter 7).
The indication of each LED in is as follows:
READY:
The relay is powered up, its power supply is receiving Vdc or Vac, and all the internal circuits are
working properly. The relay status setting is set as "RDY" (ready) and at least one of the protection
functions is enabled. If the LED is off with the above-mentioned conditions, this indicates a loss of
auxiliary supply voltage or an internal HW/SW critical failure condition.
TRIP:
The relay has issued a trip, activating the corresponding tripping output contact.
MIB 10 and MIB 20
87-1 Trip:
Indicates that the trip has been issued by 87-1
87-2 Trip:
Indicates that the trip has been issued by 87-2
87-1 Pickup:
Indicates that element 87-1has picked up
87- 2 Pickup:
Indicates that element 87-2 has picked up
MIB 30
87- A Trip:
Indicates that the trip has been issued by 87-1 or 87-2 for phase A
87- B Trip:
Indicates that the trip has been issued by the 87-1 or 87-2 for phase B
87- C Trip:
Indicates that the trip has been issued by the 87-1 or 87-2 for phase C
PICKUP:
Indicates that at least one of the protective elements has picked up.
LEDs associated to tripping functions are latched and once they have been turned on, they remain on until the ESC/RESET
button is pressed for more than 3 seconds (RESET) providing that the trip condition has disappeared. The LED associated
to function pickup is self-reset type, and stays on while the pickup condition (current above setting) exists.
A five-button keypad allows access to MIB relay information and settings changes. Measurement data (actual values), five
last trip information (fault reports) and settings are shown on the 16x2 character LCD display.
The keypad includes the functionality to modify the contrast of the display (refer to Chapter 8 for details).
The event list, oscillography, I/O and logic configuration can be accessed only from the ENERVISTA MII SETUP program.
GEK-106426B
Figure 2–7: LEDS DEFAULT CONFIGURATION
MIB High Impedance Bus Differntial Relay
2.8 USER INTERFACE
2.8.1 LED TARGETS
2.8.2 KEYPAD AND DISPLAY
2-15
2
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