Electrical and noise protection of the projector
Electrical and noise protection of the projector against unstable power supply from the High Frequency Currents machine (HFC).
HFC machines cause interference both in the connected power grid and "in the air" - they spread powerful electromagnetic field, which creates induced electric currents in electronic circuits and wires, creating interference and malfunctions in electrical equipment.
For example: USB and COM ports, WiFi modules, Ethernet (LAN) ports on computers, laptops and routers are disconnected, hard disks stop working, uninterruptible power supplies click (do not see the power from the network), wireless devices (wireless mice, bluetooth devices) are disconnected.
When the EasyCeiling laser projector is operating, this can be expressed in loss of communication with the projector, jerking or shifting of the projection.
The scanner port may "fall off" - and the scanner will continue to "beep" but will not transmit bar code information to the program.
In some cases, operation of HFC machines can disable the projector, rendering various modules unusable.
The power supply to the projector should be separated as much as possible from the line from which the HFC machines are powered.
It is desirable to run a separate line from the input circuit breaker for the projector, without crossing with other lines, and protect it with a metal cable corrugation.
The power line should be located as far away from the HFC machines as possible
(importantly) The projector should be connected to earth, either through a socket or a separate line to the chassis (but not both at once).
Protecting the projector's power supply
Due to the different conditions presented in different shops and their power supply, there are several ways to protect the projector's power supply. The suitable protection experience is set individually.
The ways of protection are:
DL-20EA3 three-phase surge protector
It is recommended to install this DL-20EA3 filter in front of each HFC machine, as close as possible to the machine itself, and if the machine has a radio box, directly into it. It is especially necessary if you have visible noise from the machines when they start up (radio off, wifi loss, flickering monitors, etc.),
(importantly) Inverter voltage stabilizer from 100W
Please note, the stabilizer should be inverter-based, not relay-based!
Mains filter. Please note that a poor quality surge protector (extension cord) may "trap" unnecessary interference. Generally, the shorter the cable from the protected line to the projector, the better.
Ferrite rings. The power cable is wrapped around them. May also help if the barcode scanner is exposed to HFC machines.
For example: we take a shvvp cable, divide it into cores, wind it tightly on a ring of 4 meters, and then build it into the projector's power cable with three rings on each core.
It is recommended to use the maximum area of the ferrite ring: wind each cable core on a separate ring (or several rings) in as many rings as possible.
Uninterruptible power supply - will not fit and will not protect the projector.
Projector location
The projector should be located as far away from the HFC machines as possible.
Locating the projector in close proximity to an HFC machine may cause the projector to malfunction immediately.
What questions does this article answer?
How to protect the laser projector from electrical interference?
What are the effects of High Frequency Currents (HFC) machines on the projector?
How to properly set up power supply for the projector?
What protection devices are recommended for the projector?
How to install the DL-20EA3 surge protector?
What type of voltage stabilizer should be used?
How to use ferrite rings for protection?
Why is an uninterruptible power supply not suitable?
How to properly ground the projector?
What are the requirements for power line installation?
How to protect the projector from electromagnetic interference?
What are the symptoms of interference from HFC machines?
How to choose the right location for the projector?
What are the best practices for power supply protection?
How to prevent communication loss with the projector?