ABB SACE Tmax XT7 Operation And Maintenance Manual page 26

24 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Continued from the previous page
Faults
Measurements incorrect or absent
(current, voltage, etc)
The expected trip does not occur Trip excluded
Opening data not displayed
The PIN is not required
Impossible to change any of the
parameters
The language cannot be changed
PIN error
Communication problems with
Ekip Com, Ekip Link, Ekip
Signalling or Ekip CI
State of CB Position field not
aligned with circuit-breaker
position
Circuit-breaker fails to react to
opening/closing command from
Ekip Touch
TRIP fail signaling: Trip Fail
command (BF)
Possible causes
Current below the minimum
threshold that can be displayed
Incorrect frequency setting
Harmonic distortion and/or crest
factor off range
Incorrect connection between
isolation transformer and
Measurement module
Rated voltage parameter setting
Error
No auxiliary power supply and/or
battery low
The PIN has been disabled or has
already been entered in the same
programming session
Trip unit in alarm condition
Trip unit set remotely
The circuit-breaker is not open
One of the possible power
supplies is not present
PIN wrong or lost
Circuit-breaker in withdrawn
position, Vaux absent or modules
not inserted properly
Absence of Ekip Com or Ekip Link
modules, or contact S75I
The connections or supplies of the
opening/closing actuators are not
correct
Absence of auxiliary power supply
to Ekip Touch
Circuit-breaker is in a condition
which fails to enable the selected
command
One or more of the following
conditions:
• Trip coil not working
• status contacts not working
• faulty internal wiring
Management operations | 2 - Maintenance and troubleshooting
ABB | SACE Tmax XT
Suggestions
Correct operating condition.
Set frequency
Correct operating condition.
Check connections between
isolation transformer and
Measurement module
Set the correct parameters
Correct operating condition.
Enable trip if necessary
Correct operating condition.
Operating condition correct;
consult chapter relating to the PIN
Correct operating condition.
Set it in local mode
Open the circuit-breaker
Power the trip unit with Vaux, Ekip
T&P or Ekip TT
Contact ABB or consult document
1SDH001501R0001
Insert modules, set circuit-breaker
to Connected position, connect
Vaux
Check for presence of Ekip Com
or Ekip Link modules and connect
contact S75/I
Check connections and supplies
Check supplies and status of
Power LEDs
Check circuit-breaker
documentation and cases that fail
to enable command
1. If closed, open CB in the
manual mode and check changed
status.
2. Press iTest, check that the
signal has disappeared from the
display and the general status of
the alarms.
3. Check the conditions of the
wiring and internal contacts
4. Working in safety conditions,
close the CB and perform a trip
test via the trip unit
Contact ABB if problems persist