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7 tin 123/P unit
The following table lists series typical service conditions, help you understand and solve hypothetical faults malfunctions. sensor
2.1
19 Untimely trip see 13.
Note:
1. Correct threshold
2. Correct curve
3. FN
6 Display off Vaux missing and the current and/or
voltage are below the minimum value.6. Information lost due power
failure
FN see 13. Curve too low
3. Curve I2t inserted
4.5
14 display the opening data Vaux missing,the buffer capacitor
is discharged
FN, see 14. Function prevented with I>4In
1.1
21 The language cannot changed Relay remotely set
2.4.
N itu tio ssib tio s
1 The trip test cannot run The busbar current 0
2.8
7 The display not back-lit Current and/or voltages below the
limit for lighting the display
FN
8 Reading incorrect Current below the minimum threshold
that can displayed
FN
9 Reading and power
factor incorrect
1) Connection error between VT
and PR120/V
2) Voltage parameter setting error
1) Check connections between and
PR120
2) Set correct parameters
10 Local Bus" message
on display
No communication between PR123/P
and PR021/K
1.1
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/P alarm situation FN
17 Temp. FN, see 14.1
2. Set int. Correct threshold
2. The not connected
1.2.N°. Power the relay
Model 2234 Apparatus Scale
L 2778
Doc.
3. the casewhere thesuggestions proposed not lead asolution ofthe problem, pleasecontacttheABBSACEassistance service.
2. Correct Neutral Selection
5.5. Vaux PR120/V PR030/B
not installed
1.5.
111/158
.4. not open
3. Temperature out range
1.Error message escription
1A Invalid date Date has not been set
1A Parameters revised Programming session concluded correctly
1A Cancelled Programming session cancelled
1A Failed Programming session rejected
14.4.3.5
2.2.9.9. Beforeconsulting thefollowing table, checkforanyerror messagesappearing forsomeseconds thedisplay. Correct curve
3.2.
2.6. Exclude not necessary
4. Correct Neutral Selection
4 Rapid trip, with Off Iinst tripped with short-circuit with high I
5 High earth but trip happens Incorrect selection the sensor
2.6.2. Curve too high
3. not present, disable PR021/K,
see 14. Check bus connection
3. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date First installation
2. indicates the normal operation ofthe PR123/P. FN
2. Check the messages the display
2 Trip times lower than expected Threshold too low
2. Exclude not necessary
4. Thermal memory enabled
4. 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 14. Set locally
2. Exclude not necessary
3 Trip times higher than expected Threshold too high
2. FN, see 14. Incorrect Neutral Selection
5. 2
Page No. Incorrect Neutral Selection
1. ext. Open CB
3.3
20 LED lighting see 13. The SdZ inserted
1
