Front Interface of the Relay
(For CSENEX-I 201 Model)
R
I
CSEN
EX
TRIP
PICKUP
L
1
L 2
L 3
BLOCK
E
BF/TCS
F1
CLOSE
OPEN
C
O
N
T
R
O
L
U R R E N T
C
R O T E C T I O N
P
E L A Y
R
Key operation
indication LEDs
Scroll / Edit key
Power On LED
(Relay ready for operation)
* It must glow otherwise check
the trouble shooting tips on last
page
LCD
Assignable function key
F1: (DO1...DO4) DO Reset
CLOSE: CB Close key
on assigned DO
OPEN: CB Open key
on assigned DO
Intelligent Key for
direct access to
fault status, pickup
status, DI status &
DO status
Scroll / Edit key
Enter key
BLOCK: indicates
protection blocking
based on DI
BF/TCS: indicates the
Circuit Breaker failure
or Trip Circuit failure
E: indicates the
fault in earth
L3: indicates the
fault in L3 phase
L1: indicates the
fault in L1 phase
L2: indicates the
fault in L2 phase
TRIP: trip on fault
PICKUP: pickup
in fault
LED
USB for Front
Communication
with Laptop/PC
Fault Reset key
l
Digital Signal Processor based numeric design
l
Measures true RMS with DFT filter
l
4 Current analog inputs for phase & earth fault current
l
Max. 6 Digital Inputs / 4 Digital Outputs
l
16 x 4 Alpha-numeric LCD
l
8 LEDs at pickup and trip on fault + 3 LEDs with special function of 3 control keys
l
RS-485 & USB communication
Hardware
03