LSI LASTEM M-Log – User’s manual
10
The total discharge of the battery will lose the date/time of the datalogger; this condition is very
dangerous because it makes the stored data unreadable so also compromising the operation of data
unloading and data storing on the acquisition system.
Note:
It’s advisable to check the date/time displayed by the datalogger and eventually update to the
current date/time through 3DOM software (see §4.5.2 of SWUM_00339 manual reported on LSI
LASTEM products DVD MW6501):
- before starting the survey;
- before and after operations of battery recharge;
- after a long period of inactivity;
- when the message of low battery is displayed (see §
Errore. L'origine riferimento non è stata
trovata.
).
3.3.3
Inputs and actuators
3.3.3.1
ELO007-ELO008-ELO009 models
The instrument is fitted with 4 analogue inputs in
differential
mode and 8 in
single-ended
mode
(§3.3.4
Errore. L'origine riferimento non è stata trovata.
) (independent, for sampling of voltage
signals, current, resistance, Pt100 with three or four wires, thermocouples), a digital input (for
sampling of pulse inputs, frequency or digital state) and 2 actuators used to power the sensors
connected to the terminal board; the actuators can also be used by the actuation programmable
logics, than can produce alarms according to the values acquired by the sensors . The voltage
available on these terminals depends on the kind of power supply received by the instrument.
Use the program
3DOM
(see SWUM_00339 available on LSI LASTEM product DVD – MW6501)
to configure the operation to switch on the sensors by means of the switching powers. In order to
choose the actuation time is advisable to consider both the energetic saving and the time the sensor
needs to initialize.
The association between input and switching power is fixed, as shown in the table below. The
number of the terminal is indicated in italics; we understand, for example, that inputs 1 and 2 both
make use of the first actuator; therefore it cannot be used for the other inputs. In case of sensors that
generate two signals (like the thermo-hygrometric sensor), it’s suitable to select both inputs that use
the same actuator.
A third actuator is on the pin9 of the serial port connector 1 and it can be used for sensors that
interface to M-Log with serial connection; if configured appropriately with a logic based on the
power level or battery power level, it can be used as fixed power supply.
All the actuators can be activated manually by the diagnostic window type 4 (see §4.3.4).
The following tables show the terminals used to connect sensors and power supply for ELO007 and
ELO008 models.
TERMINAL BOARD
Analogue
input
Signal
GND
Actuator
A
B
C
D
Number
+V
0 V
1
1
2
3
4
7
1
5
6
2
17
18
19
20
