How to Avoid Electromagnetic Interference
Original instructions
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WARNING
UNEXPECTED EQUIPMENT OPERATION
Follow those instructions to reduce electromagnetic perturbations:
  • adapt the programmable filtering to the frequency applied at the inputs, or
  • use a shielded cable and connect the shield to pins 27 and 28 (functional ground) of the module.
In a highly disturbed environment,
  • use the BMXXSP•••• shielding connection kit to connect the shielding without programmable filtering and
  • use a stabilised 24 VDC supply for inputs and a shielded cable for connecting the supply to the module.
  • use a shielded cable for each PTO channel respectively and note that 24VDC and GND must be included in the shielded cable. (Each shielded cable includes 4 inputs, 4 outputs, 24 VDC and GND.)
Electromagnetic perturbations may cause the application to operate in an unexpected manner.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
The figure below shows the recommended circuit for high-noise environment using the shielding connection kit:
CAUTION
POTENTIAL MODULE DAMAGE - IMPROPER FUSE SELECTION
Use fast acting fuses to protect the electronic components of the module from overcurrent and reverse polarity of the input/output supplies. Improper fuse selection could result to damage to the module.
Failure to follow these instructions can result in injury or equipment damage.