Many press die applications utilize cables, connectors, or slip rings to connect to a power supply. However, rewiring can take up precious downtime during required die changes and maintenance, especially with multi-pin connectors. Additionally, pin connectors and cables can be damaged from wear and tear. Slip rings are also vulnerable to dust and wetness.
The solution to these connection systems is using a remote system with inductive power and signal transmission. Remote systems can provide unique solutions to the problem of motion applications. They can simultaneously transmit power and signal over a gap, making possible solutions beyond physical limitations.
Concept of Remote System
A remote system consists of the transmitter mounted on the movable side and the output sensor installed on the fixed side. When the transmitter comes into the transmittable field of the output sensor, inductive power is supplied to the transmitter, and signal transmission is performed.
Construction of the System
The output sensor connects directly to the power source and I/O of any programmable logic controller. The output sensor provides power to the transmitter and inputs to the PLC.
The transmitter inductively coupled with the output sensor provides power to the detector sensors and transmits the outputs to the output sensor.
The detector sensor can be any type of inductive, optical, capacitive, or magnetic field sensor to suit your application needs. Optional passive interface available for quick and easy wiring, as shown.
Benefits of a Remote System
Using a remote system can provide many advantages including:
- Multiple signal transmission with one system
- Power and signal transmission is limited to non-metallic parts
- There are no exposed contacts
- Direct connection of output signal to PLC I/O
In the image above, you can see the advantages of a remote system based on application.
For rotary units, there is no cable movement therefore no stress is placed on the cable. You also no longer need to limit the turning radius.
For interchangeable units, change out is instant. No extra labor and time is needed to reconnect cables also limiting human error.
For moving units, a remote system can handle dust and contamination as there is no cable movement and no physical connection.
Here is an example of how to set up a remote system in an NPN-type connection.
MISUMI carries a variety of wireless transmitters and sensors to set up a remote system for your application. Explore the selection here. Stay tuned for the next post about Remote System applications!
