ABB SACE Emax Series Installation, Service And Maintenance Instructions page 110

14.6 Definition of alarms and signals in the PR123/P unit
14.6.1 Optical signals
Signalling
Warning (yellow) led
Warning Led (yellow 0.5Hz) • WARNING threshold of relay's internal temperature exceeded.
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.
14.6.2 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.
14.6.3 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
Harmonic dist.
Contact wear
G (TRIP OFF)
Gext (TRIP OFF)
T Alarm
T (TRIP OFF)
U Alarm
UV Alarm
OV Alarm
RV Alarm
RP Alarm
UF Alarm
OF Alarm
Load LC1
Load LC2
L1 Sensor
L2234
Model
L2778
Description
• The prealarm threshold has been exceeded; one or more phases with current values in the range
0.9xI < I < 1.05xI (on the Ne it depends on the selection made; for instance, at 50% the values are halved);
1 1
• Presence, between two or three phases, of unbalance above the value programmed for the "U" protection,
with protection trip disabled;
• Presence of distorted wave form with form factor> 2.1;
• Contact wear greater than 80% (and less than 100%);
• WARNING Threshold I exceeded;
w
• Circuit-breaker state error;
• Frequency out of range;
• Configuration error;
• Settings inconsistency.
• ALARM threshold of relay's internal temperature exceeded.
• Presence of overload on one or more phases with current values I >1.3 I1 (timing protection "L")
(on the Ne it depends on the selection made; for instance, at 200% the values are doubled)*;
• Timing in progress for protection function S;
• Timing in progress for protection function G;
• Timing in progress for the voltage (UV, OV, RV), frequency (OF, UF) protection functions;
• Timing in progress for the reverse active power protection function (RP);
• Timing in the case of unbalance between the phases (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
Harmonic distortion alarm
Alarm for contact wear
Alarm for protection G
Alarm for protection Gext
Alarm for protection T
Alarm for protection T
Alarm for protection U
Alarm for protection UV
Alarm for protection OV
Alarm for protection RV
Alarm for protection RP
Alarm for protection UF
Alarm for protection OF
Alarm for load control LC1
Alarm for load control LC2
Alarm for L1 phase current sensor
Notes
Busbar currents with form factor > 2.1
Contact wear = 100%
Temperature outside range
Protection U delay counting down
Phase L1 sensor disconnected or faulty
Apparatus
Doc. No.
1SDH000460R0002
Scale
Emax
Page No.
109/158