LB-490 module is used to collect and record measurement data, shared via its communication interfaces (mainly Ethernet) using a range of various communication protocols.
LB-490 module is equipped with two power supply inputs: mains supply and buffer supply from a battery. Buffer power supply from a battery allows for operation in conditions where mains supply is unavailable. Such an operation is supported by a special operation mode consisting of putting the station in a sleep mode and then activating the station again in order to record and send data. Activation of the module may be carried out using various methods: by cyclic clock control or asynchronously as a result of events on the inputs of the module. Activating the sleep mode of the station for a time of inactivity allows for optimisation of power consumption and prolonging buffer power supply operation to a maximum extent.
The module is equipped with 16 inputs, and each of them may be individually and independently configured to operate in the following modes (similarly to LB-480 recorder):
The module has an embedded internal temperature sensor.
There is a possibility to connect further measuring sensors using an expansion module.
The module may record data using 2 methods:
The built-in memory has 1 MB capacity and the majority of it is intended for data recording. The memory has its own buffer power supply from a built-in battery, and thus its contents is maintained when the device is turned off. This memory may be directly accessed using lbx software.
Concurrently with save in the built-in memory, the recorder may save data in a memory card. The data may be then read-out directly on a PC. A presence of a memory card is not required to record data – an internal memory is always available. However, its capacity is relatively small, and a memory card allows for archiving data for a significantly longer period of time.
This is a basic communication interface allowing for connection to a data transmission network (or directly to a PC). It may operate in modes 10/100 Mbit/s.
Optionally, it is possible to apply power supply via Ethernet – POE.
USB interface enables communication between the module and lbx software on a PC.
Via additional Bluetooth module of LB-499-BT module, LB-490 recorder may communicate with lbx software installed, e.g. on a mobile tablet, without the need to install cable connections.
Via additional LB-499-RS232 or LB-499-RS485 module the recorder may communicate with any other devices, or operate as a device of MODBUS slave type.
Additional LB-499-GSM module provides LB-490 recorder with a remote access to data transmission in GSM/GPRS mobile phone network.
The module enables read-out of data via popular, standard communication protocols:
The functionality may be extended via additional modules. It is possible to install any 6 modules at the same time:
The module can individually operate the alarming function. There are 32 independent alarms available, each has its own individual source (a value measured by any sensor) and an individual output. The following outputs are available:
A basic software used to read-out and visualise data is lbx.
Data from the recorder may also be loaded using standard communication protocols that enable integration with any other IT system.
any data source in S300 current loop digital standard
data transmission: 300bps 7/N/1
|temperature – thermistor||
10k thermistor sensor
the range of measurement: -50...+150°C
measurement resolution: 0.1°C
+/- 4°C for 140°C,
+/- 1°C for 100°C,
+/- 0.2°C for 50°C,
+/- 0.2°C for 25°C,
+/- 0.2°C for 0°C,
+/- 2°C for -40°C
|temperature – Pt1000||
Pt1000 platinum resistor sensor
the range of measurement: -200..+850°C
measurement resolution: 0.1°C
+/- 6 °C for 750 °C,
+/- 3 °C for 320 °C,
+/- 1 °C for 130 °C,
+/- 0.5 °C for 0 °C,
+/- 1 °C for -80 °C,
+/- 2°C for -190 °C
|voltage analog 0..10 V||the range of measurement: 0.00..10.00 V
measurement resolution: 0.01 V
measurement uncertainty: 0.01 V
|current analog 0..20 mA||the range of measurement: 0.00..20.00 mA
measurement resolution: 0.01 mA
measurement uncertainty: 0.01 mA
|binary/pulse||short-circuit state detection: R < 8k06
open state detection: R > 8k06
|switch||line short-circuit: R = 0 .. 2k6
closed contact: R = 2k6 .. 8k06
opened contact: R = 8k06 .. 24k
line interruption: R > 24k
|Interfaces||Ethernet||10/100 Mbit/s, full-duplex / half-duplex, flow-control
POE (optionally upon request)
|Digital outputs||normally open/normally closed relays||the number of outputs: 2
maximum constant load current: 8 A
|Recording memory||recording period||1-60,000 seconds
set with 1 second resolution
|memory capacity||~1 MiB|
|Power supply||external power supply||power supply voltage: 12 V DC
power consumption: max x W (without S300 inputs)
each S300 input increases power consumption by 25 mA (at 12 V power supply: 0.3 W)
|POE (Power Over Ethernet)
(optionally upon request)
class 1 (max 3.84 W)
power supply via data lines 1-2/3-6 or via unused lines 4-5/7-8
|Operating temperature range||-40..+50°C|
|Storage temperature range||-40..+70°C|
|Humidity range||0..95%||without water condensation|
|External dimensions||Plastic housing||279 x 191 x 102 mm|