Panasonic ELC500 User Manual page 29

■To avoid the effect from noise
Use power supply that has little noise. The inherent noise resistance is sufficient for power supply
superimposed noise. However, we recommend decreasing noise by using insulated transformer.
In order to decrease influence from noise, use twist cable for power supply.
■Isolate power supply system
Isolate the wiring system to ELC500, input/output devices, and mechanical power apparatus.
■Power supply sequences
Power supply sequence of the ELC 500 should be the sequence that it turns OFF before power supply
for I/O. If I/O power supply turns off before the power supply of the ELC 500, ELC 500 detects a
change in input level and may cause unexpected operation.
ELC500
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ELC500 Control unit