ABB SACE Emax 2 Series Operating Instructions Manual page 291

288 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Continued from the previous page
Faults
It is not possible to remove
the circuit-breaker from the
disconnected position
Trip times different than
expected
Rapid trip with I3 = Off
High ground-fault current,
but no trip occurs
Display off and/or not
backlit
Measurements incorrect or
absent (current, voltage,
etc)
The expected trip does not
occur
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
Possible causes
Fail Safe lock active
Wrong threshold/time/curve
selected
Thermal memory enabled
Zone selectivity enabled
Incorrect neutral selection
linst trip
Incorrect selection of the sensor
Function G inhibited owing to
high current
No auxiliary supply or currents
lower than minimum turn-on
values
Temperature outside range
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
Trip excluded
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Circuit-breaker in withdrawn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
ABB | SACE Emax 2
Suggestions
Discharge the closing springs of
the command
Correct parameters
Disable it if it is not necessary
Disable it if it is not necessary
Modify the neutral selection
Correct operating condition with
short circuit at high current
Set internal or external sensor
Correct operating condition (see
use cases in the chapter that
describes the protection)
Correct operating condition.
Correct operating condition.
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
Continued on the next page
Alarms or failures
1 - Identification of alarms or failures