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3. Check the messages the display
2 Trip times lower than expected Threshold too low
2. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date 1. FN
2.3
20 Led lighting See 13.
Note:
1. Power the relay
Model 2234 Apparatus Scale
L 2778
Doc.7 tin 122/P unit
The following table lists series typical service conditions, help you understand and solve hypothetical faults malfunctions.
2. Correct curve
3. not open
3. Exclude not necessary
4.6. Correct threshold
2.5.4. Temperature out range
1.2.n°.5
2.2. FN
6 Display off Vaux missing and the current and/or
voltages are below the minimum value.8
7 The display not back-lit Current and/or volatges 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 and
PR120/V
2) parameter settings error
1) Check connections between and
PR120/V
2) Set the correct parameters
10 Local Bus" message
on display
No communication between PR122/P
and PR021/K
1. Check bus connection
3. 2
Page No. Check PR021/K
11 Message ""
instead expected data
Function disabled data
out 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. Local setting
2. Correct neutral selection
5.6. sensor
2. Set int.4. Thermal memory enabled
4. FN, see 13.13. FN, see 13. Function prevented with I>4In
1.2. FNindicates the normal operation ofthe PR122/P. The not connected
3. Information lost due power
failure
FN see 13. 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. Open CB
3.
74/158
.4.2. Incorrect Neutral Selection
5.
2. Inthecasewhere the suggestions proposed not lead toasolution ofthe problem, please contacttheABBSACEassistanceservice.
N itu tio ssib cau tio s
1 The trip test cannot run The busbar current 0.5. Curve too high
3.9.1
21 The language cannot changed The relay remotely set
2.
16 Impossible change any
param eter
PR122/P alarm situation FN
17 Temp.5
14 display
of the opening data
Vaux missing, the buffer
capacitor discharged
FN, see 13.
2. The SdZ inserted
1. Exclude not necessary
3 Trip times higher than expected Threshold too high
2. Beforeconsulting the following table, checkforanyerror messagesappearingforsomeseconds thedisplay. Curve I2t inserted
4. Vaux PR120/V PR030/V
not installed
1. not present, disable PR021/K,
see 13. Curve too low
3. Correct curve
3.9. Exclude not necessary
4. Correct threshold
2.6.1
19 Untimely trip See 13. open
1. ext.
3.1
15 The password not requested The password has been disabled FN, re-enter the password with value
other than 0000. Incorrect Neutral Selection
1.First installation
2.1
2
