Doc: I437GB04_16.docx 09/03/2016
p. 8 / 37
Remote variables (REMx)
The ATL900 can manage up to 16 variables controlled remotely (REM1…REM16).
The state of these variables can be edited as required by the user by means of the communication protocol and may be used in combination with outputs, Boolean logic etc.
Example: a relay using the control software can be freely activated and deactivated by using a remote variable (REMx) as source of an output (OUTx). This would allow to use
ATL900 output relays to control loads, e.g. lighting or other.
Another use of the REM variables may be to enable or disable given remote functions by inserting them in a Boolean AND logic with inputs or outputs.
User alarms (UAx)
The user can define up to 8 programmable alarms (UA1…UA8).
The following can be established for each alarm:
o
the
source
, i.e. the condition which generates the alarm;
o
the
text
of the message which must appear on the display when the condition occurs;
o
the
properties
of the alarm (like for the standard alarms), i.e. so as to interact with the genset control.
For example, going beyond a threshold may be a condition which generates the alarm. In this case, the source must be one of the LIMx limit thresholds.
If instead the alarm must be displayed as a consequence of the activation of an external digital input, then the source will be an INPx.
The same criterion can be used to combine an alarm to complex conditions resulting from the logical Boolean combination of inputs and thresholds, etc. The PLCx variables will
be used in this case.
The user can defined a freely programmable message which will appear in the alarm pop-up window.
Properties can be defined for the user alarms using the same method applied for normal alarms. In other words, it is possible to determined whether a given alarm must stop the
motor, sound the siren, close the global alarm output etc. See the
Alarm properties
chapter.
Multiple simultaneous alarms will be displayed in sequence and the total number of alarms will be shown.
Use the specific control in the command menu to reset a programmed alarm with memory.
See settings menu M21 for alarm definition.
PLC logic (PLCx)
Xpress
can be set using a
ladder
program for creating a PLC internal logic inside the ATL900, so as to be able to freely create any function necessary for genset accessory
applications.
In the program logic, all the variables managed internally by the ATL900 can be entered, such as inputs (INPx), threshold limits (LIMx), remote variables (REMx), controller
states (RALx) etc.
The processing results of the various branches of the ladder logic are stored in internal variables (PLCx), which may later be used to control the ATL900 outputs, or as support
memories to built a more complex logic or to control the alarms defined by the user (UAx).
It is additionally possible to create timers inside the PLC program using the programmable timers of the M17 menu.
The operation of the logic created with the ladder program may be checked in real time and possible corrected by means of the specific
Xpress
software window.
Timers (TIMx)
The system includes 8 timer variables, named TIM1..TIM8.
These variables may be used either in the PLC ladder logic or in combination with the OUTn outputs or in combination with UAn user alarms.
Each timer variable has an input which controls it (e.g. a LIMn limit or an INPn inputs etc.). The state of this variable changes from false to true (ramp up) and the timing variable
also changes from false to true but only remains true for the specified time and then returns false.
Whenever the input variable becomes false, the TIMn variable also becomes false (this also occurs before the end of the programmed time) and the time counter is reset to
zero.
Automatic test
The automatic test is a periodical test which is run at fixed deadlines (frequency programmed during setup) if the system is in AUT mode and the function is enabled. The test
consists in starting the gensets to check their efficiency.
It is possible to decide which days of the week and what time of the day (hours-minutes) to run the test.
See menu
M11 Automatic Test
for more information on programming.
If there are multiple gensets in the system, only one is started for each automatic test. The others will be started in sequence the next time.
After starting, the genset works for a programmable time after which it stops. The message
T.AUT
appears on the display before starting.
The test can be enabled or disabled for each single genset using the parameters of menu M11 and on the Automatic Test display page without needing to open the setup menu.
o
On the Automatic Test page, press
◄
and
►
at the same time.
o
Select the required genset by pressing
▲
and
▼
. Enable the test with
►
and disable it with
◄
.
o
Save and exit the setting.
Keypad lock
The keypad of the ATL900 can be locked by means of:
o
a programmable digital input.
o
a particular front button procedure.
o
Synergy-Xpress.
The message
ACCESS LOCKED
will appear when attempting to use the locked buttons.
Press
▲
and hold it pressed to lock or unlock the keypad. Press
▼
three times without releasing it at the end.
Then release
▲
and press it five more times. Then release both buttons.
The message
KEYPAD LOCKED
will appear on the display when the keypad is locked. The message
KEYPAD UNLOCKED
will appear when it is unlocked, instead.
