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Open CB
3. Thermal memory enabled
4.6.
N itu tio ssib cau tio s
1 The trip test cannot run The busbar current 0. Incorrect Neutral Selection
1. Correct curve
3.13. Information lost due power
failure
FN see 13.1
15 The password not requested The password has been disabled FN, re-enter the password with value
other than 0000. FN, see 13. FN
6 Display off Vaux missing and the current and/or
voltages are below the minimum value. Exclude not necessary
3 Trip times higher than expected Threshold too high
2.
Note:
1. The SdZ inserted
1.
16 Impossible change any
param eter
PR122/P alarm situation FN
17 Temp. not open
3. Check bus connection
3.5. 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.
2. Temperature out range
1. Exclude not necessary
4. 2
Page No.3
20 Led lighting See 13. Curve I2t inserted
4.3. Curve too low
3.5
14 display
of the opening data
Vaux missing, the buffer
capacitor discharged
FN, see 13. not present, disable PR021/K,
see 13. Vaux PR120/V PR030/V
not installed
1. Correct neutral selection
5. The not connected
3.4.6.
2. Check the messages the display
2 Trip times lower than expected Threshold too low
2. Curve too high
3. ext.9.
74/158
. Correct threshold
2. Function prevented with I>4In
1. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date 1.5.4. open
1. FN
2. Inthecasewhere the suggestions proposed not lead toasolution ofthe problem, please contacttheABBSACEassistanceservice. Local setting
2.1
21 The language cannot changed The relay remotely set
2.7 tin 122/P unit
The following table lists series typical service conditions, help you understand and solve hypothetical faults malfunctions.1
19 Untimely trip See 13.8
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. Incorrect Neutral Selection
5.2. Correct curve
3. Power the relay
Model 2234 Apparatus Scale
L 2778
Doc.First installation
2.2. Exclude not necessary
4.6.2. 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.
2.n°. Set int.2. Beforeconsulting the following table, checkforanyerror messagesappearingforsomeseconds thedisplay. FN, see 13.1
2. FNindicates the normal operation ofthe PR122/P. sensor
2.5
2.
3.9. Correct threshold
2.4
