14
Summary table of LED signals
HELP
15
Some LED signals indicate connection errors or operational errors that require corrective or maintenance
operations. The following are the suggestions for checking with reference to the preceding LED table:
HELP note
Operation
A
Contact ABB and give details about the state of the LEDs on the unit.
B
Check the connections between trip unit and accessories (Rating Plug, trip coil,
sensors, etc).
C
Normal operation/signalling provided by the trip unit.
D
Error in setting of the dip-switches. Check and correct the following conditions:
• All the dip-switches of L are in the ON position
• I1 ≥ I2 or I2 ≥I3.
• Iu < (2
∙
In
∙
I1) in the case where InN = 200 %.
• I4 < 0.3 In (with In = 100 A), 0.25 In (with In = 400 A) or 0.2 In (for all other sizes), in the absence of auxiliary power supply.
• t2 > 0.4s (in the case of UL circuit-breaker)
• t4 > 0.4s (in the case of UL circuit-breaker)
• I4 > 1200 A (in case of UL circuit-breaker)
E
Carry out installation.
F
Connect via Ekip Connect in order to set the Local Bus or to con rm maintenance.
G
Contact ABB to restore software compatibility between Ekip Dip and Mainboard.
H
Replace the battery.
Slow flashing
(0.5Hz)
Fast flashing (2 Hz)
On and fixed
2 flashes
every 2 s
3
flashes
every
3 s
4
flashes
every
4 s
HELP
Colour and LED
All R
Y
All
R+Y
All R
R
(single)
Y
All R
R
(single)
Y
All R
Y
Y
Y
Internal con guration error
(5)
x
A
Trip coil disconnected or
trip command failed
x
B
Current sensors disconnected
x
B
Rating Plug error
X
B+E
Protection delay
x
C
Pre-alarm L
x
C
Trip
(2)
x
C
Hardware Trip
(3)
x
x
B
Installation error
x
E
Parameter error
x
D
Circuit-breaker state not
de ned or in error
x
B
Error on Local Bus
x
F
Maintenance alarm
x
F
Software incompatibility
x
x
G
Low battery (during self-
test)
(4)(1)
x
H
Key to LED colours
The above table lists the colors of the LEDs, to be interpreted as follows:
• R = red LED (alarm LED L, S, I, G).
• Y = yellow LED (pre-alarm LED L).
(1)
(1)
(1)
(1)
A
Calibration in progress
x
The following table summarises the signals available with the protection LEDs and the operations to be carried out in response to alarms or fault
conditions signalled
(1) Not available for Ekip DIP relay: LS/I, LIG, M-I, G-LS/I.
(2) The last trip can also be displayed with trip unit off, by pressing the iTest key.
(3) The Hardware Trip is signalled
by lighting of the pre-alarm L yellow LED and the protection I red led.
(4) Five flashes when self-test is started up.
(5) Error present with one of the three flashing options displayed alongside.
Type of information
