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1 the case fault
A
If you suspect that the PR123/DC faulty, has malfunction has generated unwanted trip, advisable follow the
recommendations below very carefully from the Measurements menu, ►Historicals Trip:
1.5. Situation Possible causes Suggestions
8 Reading incorrect Current below the minimum threshold
that can displayed
FN
9 Reading incorrect Voltage parameter setting error Set correct parameters
10 Local Bus" message
on display
No communication between
PR123/DC and PR021/K
1.2.8.3
20 LED lighting see 13.
Model 3447
A pparatus Emax DC
S cale
D 1SDH000635R0002
Page No.4
14 display the opening data Vaux missing,the buffer capacitor
is discharged
FN, see 13.1
15 The password not requested The password has been disabled FN, re-enter the password with value
other than 0000
16 Impossible change any parameter PR123/DC alarm situation FN
17 Temp.1 ABB SACE PR010/T test and configuration unit
The test with the SACE PR010/T unit enables check the proper operation thresholds and tripping times the protection functions I,
G, OV, UV, The test unit connected the relay means the dedicated connector (see par.2.No.
3. Open CB
13. Check PR021/K
11 Message ""
instead expected data
Function disabled data out of
range
FN
12 The expected trip does not occur Trip function disabled enable trip necessary
13 activation the Unbalance
U protection
Values out range FN, see 13.5.8. Send/communicate all the information collected, together with the circuit diagram for the circuit-breaker, your nearest ABB Customer Support
service. Through the ABB SACE SD-Pocket communication software, the values the currents flowing through
the CB, the value the last interrupted currents and protection settings, can read.7.4 PR030/B power supply unit
This unit external unit allowing powering Relay, Autotest and Trip Test, checking with open and installation new replacement units.6.9. 13.4) and the version.
13.1
19 Untimely trip see 13.4).
76/108
.
13.6.4. Make note the type protection that has tripped accessing the LAST TRIP page there external power supply (Vaux battery)
or pressing Test" self-powering mode. 15.2 BT030 communication unit
Through the BT030 wireless communication unit, the PR123/DC can connected via wireless Pocket (PDA) standard PC, extending
the information range available the user.3. 13. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date First installation
2.4.8. not open
1.6.3 PR021/K and HMI030 units
The PR123/DC can also connected the PR021 optional external indication unit (see par.8 cce sso rie s
13.8.
13.4
2.1), signal through potential-free power contacts,
the protection and trip alarms, and the HMI030 switchboard front unit display number information.
13.
2. Set locally
2.
The completeness and accuracy the information given the ABB Assistance service will facilitate technical analysis the problem encountered,
and will allow carry out all actions useful for the user rapidly. Note down the type circuit-breaker, number poles, any accessories connected, In, Serial Number (see par. Information lost due power
failure
FN see 13.1
21 The language cannot changed Relay remotely set
2. Check bus connection
3. not present, disable PR021/K,
see 13. Prepare brief description the opening (what LEDs and/or indications were displayed? when did happen?, how many times was it
always under the same conditions? what type load? what voltage? what current? the event reproducible?)
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