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| Weighing
module MW-01 |
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Weighing module MW-01 has been designed as a
response for the growing market demands. The module is intended for building industrial, load cell scales, where weighing platforms are located in significant distance from measuring indicator.
Depending on the needs, communication with the module can be conducted via RS485, RS232, Ethernet, or Profibus. Module MW-01 can cooperate with measuring indicators PUE 5, PUE 7 or PC.
Weighing module MW-01 enables full operation of PLC
programmable controllers, which communicate through
communication protocol Modbus class 0.
The weighing module in network utilizing Modbus standard
operates as slave, on one of available interfaces, RS 485 or Ethernet.
It operates in one of three modes:
RS484 - RTU, (hardware interface RS485, frame RTU),
TCP/IP - RTU, (hardware interface Ethernet, frame RTU),
TCP/IP - Open ModBus, (hardware interface Ethernet, frame
Open Modbus).
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Applications:
Major applications of the weighing module:
- In weighing systems which may be supervised by master computer system thanks to comunication realized via Ethernet interface.
- Option of connecting a higher number of platforms to weighing indicators;
- Application in checkweighers owing to high processing power of up to 1000 measurements per second;
- Application in dosing systems.
Construction and functions:
Weighing module features metal housing.
Signal cables are mounted through a cable gland. Communication with external peripherals is realized through one of four interfaces:
RS485,
RS232, Ethernet, Profibus.
Technical capabilities:
- Interfaces: RS232, RS485, Ethernet,
ProfiBus;
- inputs / outputs: 2 inputs, 3 outputs (2 contractor and 1 transistor);
- Power supply of the weighing module:8 ÷ 30V DC;
- Quantity of divisions from converter: up to 223
(8388608);
- Sampling rate : up 1000 samples/sec
(od 6,25 do 3840);
- Maximum signal input: 25mV (option to introduce change of ranges );
- Impedance of load cell: 80 ÷ 1200
(option of limiting to 150 ÷ 1200);
- Power voltage of load cell: 5V DC;
- Working temperature range of weighing module: -10°C
÷ +40°C.
Detailed functions:
- Indended for static weighing of up to 10000 e;
- Intended for dynamic weighing with suggested samplling rate of up to 1000 SPS;
- Possibility of simple dosing with one or two thresholds (bulk and fine dosing);
- Possibility to design weighing systems operating in checkweighing mode.
Screenshots from the software:
Software for configuration of weighing module MW-01 - MwManager
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Main window |
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User parameters |
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Communication |
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Language selection |
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Functions of I / O |
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Dosage |
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Signalling checkweighing
ranges |
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I / O status |
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Software for operation and calibration:
Operation of weighing module is possible from a PC with the software "MW Manager". Program allows calibration of weighing module (i.e. determining: start mass, calibration coeficcient, gravitational correction, linearity correction), mass readout, tarring, zeoring, filter settings.
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Cooperation with weighing devices:
Weighing module MW-01 cooperates with the following weighing devices:
Download:
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| Technical data: |
MW-01 ver.1 |
MW-01 ver.2 |
| Interface |
RS 232, RS 485, Ethernet |
RS 232, Profibus DP, Ethernet |
| Maximal quantity of verifying units |
10 000 e |
| Maximal increase of signal |
19,5 mV |
| Minimal voltage on one verifying unit |
0,5 µV |
| Working temperature |
-10 ° - +40 °C |
| Minimal impedance of load cell |
80 |
| Maximal impedance of load cell |
1200 |
| Connection of load cells |
4 or 6 cables + shielding |
| Multi range |
yes |
| Voltage on load cell |
5V DC |
| Casing |
mild steel |
| IP rating |
IP 66 |
| Power supply |
8÷30V DC |
| OIML class |
III |
| Quantity of platforms |
1 |
| Speed of transmission RS 232, RS 485 |
57600 bps |
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Output parameters : |
Output1 - Output2 |
Output3 |
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Number of outputs |
2 |
1 |
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Type of outputs |
Reed relay type NO |
Tranzystorowe |
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Wire gauge |
0,14÷0,5 mm2 |
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Maximum constant current switiching |
200 mA |
100 mA |
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Maximum forward voltage |
50V DC |
5V DC |
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Inputs parameters |
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Number of inputs |
2 |
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Type of inputs |
Optoisolated |
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Wire gauge |
0,14÷0,5 mm2 |
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Control voltage range |
5÷24V DC |
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