Definitions Of Alarms And Signals In The Pr123/Dc Unit; Optical Signals; Electrical Signals - ABB Emax DC L3447 Installation And Service Instructions Manual

13.6 Definition of alarms and signals in the PR123/DC unit

13.6.1 Optical signals

Signalling
Warning (yellow) led
Warning Led (yellow 0.5Hz)
Warning Led (yellow 2Hz)
Alarm (red) led
* The IEC 60947-2 Standard defines the timing threshold L for current: 1.05 < I < 1.3 I1.
13.6.2

Electrical signals

K51/p1...p4 Programmable electrical signals if the PR120/K module or the PR021/K unit are installed and there is an auxiliary power supply.
K51/p1...p8 Programmable electrical signals if the PR021/K unit is installed and there is an auxiliary power supply.
Pressing the "i Test" key enables you to reset the activated contacts.
13.6.3 Table of error and warning messages
All the messages which can be shown on the display relating to incorrect configurations, generic alarms or deriving from the protection functions
and linked to useful information are described below.
The following symbols in the warning signals have the following meanings:
= Warning signal / Protection in alarm mode, with no trip (trip=off)
= Protection in alarm mode, with trip at end of delay (trip=on)
= Information, no action, except for displaying by the relay.
Error message
Contact wear
G (TRIP OFF)
T Alarm
T (TRIP OFF)
U Alarm
UV Alarm
OV Alarm
RP Alarm
Load LC1
Load LC2
IA Sensor
IB Sensor
TC disconnected
Rating Plug
Invalid date
CB status
Installation
CB not defined
L3447
Model
L3728
Description
• The prealarm threshold has been exceeded; with current values in the range 0.9xI
• Presence, between two polarity, of unbalance above the value programmed for the "U" protection,
with protection trip disabled;
• Contact wear greater than 80% (and less than 100%);
• WARNING Threshold I exceeded;
w
• Circuit-breaker state error;
• Configuration error;
• Settings inconsistency.
• WARNING threshold of relay's internal temperature exceeded.
• ALARM threshold of relay's internal temperature exceeded.
• Presence of current values I >1.3 I1 (timing protection "L")*;
• Timing in progress for protection function S;
• Timing in progress for protection function G;
• Timing in progress for the voltage (UV, OV) protection functions;
• Timing in progress for the reverse active power protection function (RP);
• Timing in the case of unbalance between the polarities (protection U) above the value set in the
configuration with protection trip set to on;
• Contact wear = 100%;
• Rating Plug disconnected;
• Trip Coil (TC) disconnected;
• Key plug error;
• Current sensors disconnected;
• Installation error.
Description
Alarm for contact wear
Alarm for protection G
Alarm for protection T
Alarm for protection T
Alarm for protection U
Alarm for protection UV
Alarm for protection OV
Alarm for protection RP
Alarm for load control LC1
Alarm for load control LC2
Alarm for IA polarity current sensor
Alarm for IB polarity current sensor
Trip Coil disconnected or faulty
Rating Plug Error absent or faulty
Clock information lost
CB status error
Key plug error
State of circuit-breaker inconsistent (Open/Closed)
Notes
Contact wear = 100%
Temperature outside range
Protection U delay counting down
Polarity IA sensor disconnected or faulty
Polarity IB sensor disconnected or faulty
Probable error in Q26 and/or Q27
Probable error in Q26 and/or Q27
Apparatus
Emax DC
Doc. No.
1SDH000635R0002
< I < 1.05xI ;
1 1
Scale
Page No.
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