Poznámky redaktora
Power the relay
Model 2234 Apparatus Scale
L 2778
Doc. Function prevented with I>4In
1. Correct neutral selection
5. FN, see 13. Correct threshold
2. Curve too high
3.2. The not connected
3.3. The SdZ inserted
1.
Note:
1. FN, see 13.
74/158
. not present, disable PR021/K,
see 13. Open CB
3.1
2.
3.2. Curve I2t inserted
4. FN
2.2.First installation
2. Thermal memory enabled
4.8
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
1.5
14 display
of the opening data
Vaux missing, the buffer
capacitor discharged
FN, see 13.7 tin 122/P unit
The following table lists series typical service conditions, help you understand and solve hypothetical faults malfunctions.1
15 The password not requested The password has been disabled FN, re-enter the password with value
other than 0000.6. Curve too low
3. Vaux PR120/V PR030/V
not installed
1. 2
Page No.4. sensor" or
" Start-up" message
Possible failure inside relay Contact ABB Sace
18 Invalid date 1. 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. Set int. FN
6 Display off Vaux missing and the current and/or
voltages are below the minimum value. Beforeconsulting the following table, checkforanyerror messagesappearingforsomeseconds thedisplay.6.13. Inthecasewhere the suggestions proposed not lead toasolution ofthe problem, please contacttheABBSACEassistanceservice. sensor
2. Information lost due power
failure
FN see 13.6.2. Correct threshold
2.9.5. 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. Incorrect Neutral Selection
5.4.
2. FNindicates the normal operation ofthe PR122/P. Exclude not necessary
4.5
2.1
19 Untimely trip See 13.
N itu tio ssib cau tio s
1 The trip test cannot run The busbar current 0.
2. Incorrect Neutral Selection
1. Exclude not necessary
4.9.5. not open
3. open
1.3
20 Led lighting See 13. Correct curve
3.4. Correct curve
3.
16 Impossible change any
param eter
PR122/P alarm situation FN
17 Temp. ext. Temperature out range
1. Exclude not necessary
3 Trip times higher than expected Threshold too high
2. Local setting
2.n°.1
21 The language cannot changed The relay remotely set
2. Check the messages the display
2 Trip times lower than expected Threshold too low
2.
2. Check bus connection
3
