ALARMS
– When an alarm situation occurs, ATL10 either shows a code on the displays or lights up a dedicated LED
– For non-retentive alarms, the indication disappears automatically when the alarm conditions stop, while for retentive ones a manual reset is needed from the
unit front panel: this is done by pressing key OFF / RESET (and then shifting to OFF mode)
– The presence of any alarm is signalled by the lighting up of the relevant flashing ALARM Led
– In the presence of an alarm, both the global alarm output (ALA) and the ATS ready output (RDY) are de-energized.
– An alarm can be disabled by programming to OFF the parameter defining its threshold or the programmable input generating it
– The following table lists the possible alarms and their meanings. The MODE column indicates the operating modes (OFF MAN AUT ) where the alarm is
enabled.
COD
Description
A01
Battery voltage too low
A02
Battery voltage too high
A03
Line 1 circuit breaker timeout
A04
Line 2 circuit breaker timeout
A05
Line 1 wrong phase sequence
A06
Line 2 wrong phase sequence
A07
Load not powered timeout
A08
Generator not available
A09
Emergency
A10
Line 1 circuit breaker protection trip
A11
Line 2 circuit breaker protection trip
A01 - A02 – Battery voltage beyond threshold for a time exceeding the time set.
A03 - A04 – The changeover device did not perform the opening or closing operation within the max. time set. After alarm generation, the opening or closing
command is inhibited.
Alarms are generated only if at least one of the two power sources is present, i.e. if it is higher that the minimum thresholds programmed.
A05 - A06 – The phase sequence detected on line 1 – line 2 does not correspond to the programmed one.
A07 – The load remained de-energized for a time exceeding the one programmed by P2.11, either because supply lines were not available or because both
circuit breakers remained open.
A08 – Can be generated by the opening of the external 'generator not ready' input or when, after having started the generator, the voltage does not become
acceptable within the time specified by P2.11. If the alarm is generated by the external input then it is not retentive. Otherwise it is retentive and thus must be
resetted using RESET/OFF key.
In applications with two generators, A08 is shown on the Line 1 or Line 2 display depending on which generator generated the alarm.
A09 – Alarm generated by the opening of the external emergency input. Both circuit breakers are opened.
A10 - A11 – Generated by the closing of programmable input Trip (TR.1 and TR.2 functions). The open and close commands of the circuit breaker concerned are
inhibited.
PARAMETERS SET-UP
– To access parameter setup, starting with the unit in OFF-RESET mode, press the A and D keys together for five consecutive seconds. MENU SETUP text will
appear on the display, wait a few seconds or press key D to access the menu
– The display will show the code of the first parameter P1.01, i.e. menu P1, parameter 01
– Press keys A and B to scroll the parameters of the same menu
– Press keys E and F to browse the different menus
– Press keys C to switch between the code and the value of the parameter
– By moving to another parameter or quitting, the menu the setting will be stored automatically
– Press key D to quit parameters setup
– Press keys E and F simultaneously to go back to the default setting of the parameter
– If no keys are pressed for more than 2 minutes, the unit exits setup automatically without storing the changes.
MENU TABLE
MENU
Description
P1
System ratings
P2
General data
P3
Line 1 voltage control
P4
Line 2 voltage control
P5
Programmable inputs
P6
Programmable outputs
P7
Communication port
A
Alarms
G
B
MODE
O M A
O M A
A
A
O M A
O M A
A
O M A
O M A
A
A
5