Poznámky redaktora
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. Beforeconsulting the following table, checkforanyerror messagesappearingforsomeseconds thedisplay.
3. FN
6 Display off Vaux missing and the current and/or
voltages are below the minimum value. FN
2. Temperature out range
1. Exclude not necessary
4. Correct curve
3.1
15 The password not requested The password has been disabled FN, re-enter the password with value
other than 0000. Thermal memory enabled
4. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date 1. Curve too high
3. 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
3.5
2. Exclude not necessary
3 Trip times higher than expected Threshold too high
2.
2.
2.4.4. ext.7 tin 122/P unit
The following table lists series typical service conditions, help you understand and solve hypothetical faults malfunctions.3. Local setting
2. Power the relay
Model 2234 Apparatus Scale
L 2778
Doc. The SdZ inserted
1. Curve I2t inserted
4.5.n°.3
20 Led lighting See 13. Information lost due power
failure
FN see 13.1
19 Untimely trip See 13. Set int. Check the messages the display
2 Trip times lower than expected Threshold too low
2. FNindicates the normal operation ofthe PR122/P. not open
3.
N itu tio ssib cau tio s
1 The trip test cannot run The busbar current 0. sensor
2.2.13.2.6. open
1. Vaux PR120/V PR030/V
not installed
1.6. not present, disable PR021/K,
see 13.
Note:
1. The not connected
3.5
14 display
of the opening data
Vaux missing, the buffer
capacitor discharged
FN, see 13. Inthecasewhere the suggestions proposed not lead toasolution ofthe problem, please contacttheABBSACEassistanceservice. Exclude not necessary
4. 2
Page No.
16 Impossible change any
param eter
PR122/P alarm situation FN
17 Temp.
74/158
.6. Correct neutral selection
5. Function prevented with I>4In
1.9. Incorrect Neutral Selection
1. Correct threshold
2.4. Correct threshold
2. Check bus connection
3. Incorrect Neutral Selection
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. Correct curve
3.1
21 The language cannot changed The relay remotely set
2.2. Curve too low
3.First installation
2. FN, see 13.9.1
2.5. FN, see 13.2.
2
