GE P742

Programmable Logic
P74x/EN PL/N
a7
MiCOM P74
1, P742, P743
(PL) 7-
51
PL
LED
Number
LED Input Connection/Text Latched P74x LED Function Indication
8
LED8 Red
LED8 Yellow
LED8 Green
No
Fiber communication Error
Fiber communication to change
Fiber communication healthy
9
FnKey LED1 Red
FnKey LED1 Yellow
FnKey LED1 Green
No
Zone or CZ circuitry fault block.
Zone or CZ circuitry fault alarm
No Zone or CZ circuitry fault
10
FnKey LED2 Red
FnKey LED2 Yellow
FnKey LED2 Green
No
Zone or CZ PU error fault block.
Zone or CZ PU error fault alarm
No Zone or CZ PU error fault
11
FnKey LED3 Red
FnKey LED3 Yellow
FnKey LED3 Green
No
All protections Disabled
Not used
All protections Not Disabled
12
FnKey LED4 Red
FnKey LED4 Yellow
FnKey LED4 Green
No
Zone 1: 87BB & 50BF blocked
Zone 1: 50BF blocked
Zone 1: protected
13
FnKey LED5 Red
FnKey LED5 Yellow
FnKey LED5 Green
No
Zone 2: 87BB & 50BF blocked
Zone 2: 50BF blocked
Zone 2: protected
14
FnKey LED6 Red
FnKey LED6 Yellow
FnKey LED6 Green
No
Not used
Not used
Reset CU Indications
15
FnKey LED7 Red
FnKey LED7 Yellow
FnKey LED7 Green
No
Not used
Not used
Reset CU & PU Indications
16
FnKey LED8 Red
FnKey LED8 Yellow
FnKey LED8 Green
No
Not used
Not used
Reset PU Trip Latch
17
FnKey LED9 Red
FnKey LED9 Yellow
FnKey LED9 Green
No
Not used
Not used
Manual DR trigger
18
FnKey LED10 Red
FnKey LED10 Yellow
FnKey LED10 Green
No
Not used
Dead Zone fault
Not used