L2275
Emax UL
91/132
Doc. N°
Mod.
RH0109002
Apparatus
Scale
Page N°
15.5 Troubleshooting
The following table collects up a series of typical service situations, which are useful in order to understand and solve hypothetical faults or
malfunctions.
N.B.:
1.
Before consulting the following table, check any lighting up of the LEDs located on the front of the unit for some seconds.
2.
FN indicates normal operation of the PR113.
3.
In the case where the suggestions proposed do not lead to a solution of the problem, please contact the ABB SACE service assistance.
N°
Situation
Possible causes
Suggestions
1
It is not possible to reset the
The buffer capacitor is discharged
FN, connect the Vaux, the PR010/T or signals
the PR120/B, to reset.
2
It is not possible to carry out the trip test
1. The busbar current is > 0
1. FN
2. The SA is not connected
2. Check the messages on the display
3
Trip times lower than
1. Threshold too low
1. Correct threshold
those expected
2. Curve too low
2. Correct curve
3. Thermal memory inserted
3. Exclude if not necessary
4. Incorrect Neutral Selection
4. Correct Neutral Selection
5. The SdZ is inserted
5. Exclude if not necessary
4
Trip times higher than
1. Threshold too high
1. Correct threshold
those expected
2. Curve too high
2. Correct curve
3. Curve I
2
t inserted
3. Exclude if not necessary
4. Incorrect Neutral Selection
4. Correct Neutral Selection
5
Rapid trip, with I3=Off
Iinst trip
FN with short circuit with high I
6
I of ground high, but there is no trip
1. Incorrect selection of the sensor
1. Set int. or ext. sensor
2. Function G prevented with I>4 In
2. FN
7
Display off
1. Vaux missing and the busbar I is
1. FN, see 15.2.2.1
less than the minimum value.
2. Temperature out of range
2. FN, see 15.2.6.7
8
The display is not rear-lit
Vaux missing
FN
9
Reading of I and/or V incorrect
Incorrect setting of In and Un
Change parameters, see 15.4.2.1
10
Reading of V, W and power factor incorrect
Incorrect connection of the VT
Check VT-PR113 connections
11
No Int Bus Comm” Message
There is no communication between
1. If not present, exclude PR020/K,
PR113 and PR020/K
see 15.4.2.1
2. Check bus connection
3. Check PR020/K
12
Display indicates “….” or “>xxxx”,
Function excluded or data out
FN, see 15.2.8
inistead of the data expected
of range
13
The expected trip does not occur
Trip function excluded
FN enable trip if necessary
14
No activation of the Unbalance
Values of I out of range
FN, see 15.2.6.6
U protection
15
Anomalous behavior of Load
The MT of L is inserted.
FN, exclude the MT of L
control K protection
16
No display of the opening data
Vaux missing
FN, see 15.2.9.2
17
The password is not requested
The password has been disabled
FN, re-enter the password with a value
other than 0000.
18
It is not possible to change any
PR113 in alarm situation
FN
parameter
19
The display shows
You are trying to access an
FN, press “ESC” to exit.
“ABB SACE psw ? [****] “
ABB reserved area
