Poznámky redaktora
9.2. Correct curve
3. Check the messages the display
2 Trip times lower than expected Threshold too low
2.13.7 tin 122/P unit
The following table lists series typical service conditions, help you understand and solve hypothetical faults malfunctions. Exclude not necessary
3 Trip times higher than expected Threshold too high
2. Inthecasewhere the suggestions proposed not lead toasolution ofthe problem, please contacttheABBSACEassistanceservice. Open CB
3. Exclude not necessary
4.2. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date 1.
2. FN, see 13. ext. FN
2. 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 13.9. The SdZ inserted
1. Function prevented with I>4In
1. Incorrect Neutral Selection
1. Curve too high
3.1
15 The password not requested The password has been disabled FN, re-enter the password with value
other than 0000. Power the relay
Model 2234 Apparatus Scale
L 2778
Doc.4.n°.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
1.6. 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
2.4. Exclude not necessary
4. sensor
2.3.5.
2. The not connected
3. Curve I2t inserted
4. Set int.6. FN, see 13.
N itu tio ssib cau tio s
1 The trip test cannot run The busbar current 0. Correct threshold
2.
16 Impossible change any
param eter
PR122/P alarm situation FN
17 Temp. Vaux PR120/V PR030/V
not installed
1.2. Information lost due power
failure
FN see 13. Local setting
2.5
2.1
21 The language cannot changed The relay remotely set
2.
3.5. not present, disable PR021/K,
see 13. Thermal memory enabled
4.4. FN
6 Display off Vaux missing and the current and/or
voltages are below the minimum value. Correct threshold
2.6. Temperature out range
1. Correct neutral selection
5.1
19 Untimely trip See 13. Correct curve
3. Check bus connection
3.
2. open
1. Beforeconsulting the following table, checkforanyerror messagesappearingforsomeseconds thedisplay.2. 2
Page No.
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.
Note:
1.First installation
2. Incorrect Neutral Selection
5. not open
3. FNindicates the normal operation ofthe PR122/P.3
20 Led lighting See 13.5
14 display
of the opening data
Vaux missing, the buffer
capacitor discharged
FN, see 13. Curve too low
3.1
2
