Wireless signal transmission from machines
Sensor signals from moving machine parts, without cables, straight into a PLC or PC.
Transmitters
- Collect signals from sensors on moving machine parts
- 8 digital inputs
- Battery powered
- Several months of continuous battery operation
- Antenna integrated on the PCB
Receivers
- Receive signals wirelessly from the transmitters
- 8 digital outputs
- Forward signals to a PLC or PC
- Optional RS232 or Ethernet interface
- Wide supply voltage range: 4.5–30 V
How it works
The system consists of one or more transmitters mounted on the machine and one receiver connected to a PLC or PC.
Each transmitter has 8 inputs for sensors, and their states are sent wirelessly to the receiver. Very low power consumption gives the transmitters several months of battery life. Battery monitoring is built in, so the receiver can warn when a transmitter's battery needs replacing. Communication uses the 868 MHz ISM band, and reliability is ensured by acknowledging every message, fast retransmission when an acknowledgement is missing, and detection of communication loss.
The receiver signals the input states of its linked transmitters through digital outputs. It can forward individual inputs directly or provide combined information when several signals reach a given state. Different output types (PNP, NPN, push-pull) and voltage levels (24 V, 12 V, 5 V, 3.3 V) are possible. An RS232 or Ethernet interface and a web server for system monitoring can also be added.
The system accepts a very wide supply voltage range, from 4.5 to 30 V. All components are housed in compact IP65 enclosures for reliable operation in industrial conditions.
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