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During the use of Pepperl+Fuchs isolation barrier, it is strictly forbidden to use a megohmmeter to test the insulation between the terminals of the isolation barrier. If you want to check the insulation of the system circuit, you should first disconnect all Pepperl+Fuchs safety barrier isolation grid wiring, otherwise it will cause damage to the internal components. Therefore, when the isolation safety barrier is separately energized and debugged, you must pay attention to the type and model of the isolation safety barrier. The polarity of the power supply, the voltage level and the label on the terminal of the isolated safety barrier shell.

The explosion-proof principle of the P+F double plus zener grid is to use a zener diode to control the output voltage and a resistor to limit the output current. The circuit is relatively simple. When the production industry is working normally, the Zener safety barrier is equivalent to two resistors in series into the circuit, so there is no need to change the system structure. In addition, the Double+Fozina safety barrier has no effect on the accuracy of the original signal due to the transition of no signal. The isolation safety barrier uses high frequency as the fundamental wave to modulate and demodulate the signal. If the signal changes, the accuracy will be affected by the safety barrier circuit. Due to the high frequency oscillating circuit of the isolation safety barrier, radio frequency interference will be generated, which is detrimental to the system, and the isolation safety barrier is also relatively easy to damage. But the isolation safety barrier does not require intrinsically safe grounding, which is its advantage over the Zener safety barrier. As for what kind of safety barrier is more suitable, we recommend that you choose genuine products and not high-proof products to ensure the safe and stable use of the product. In terms of market price, Zener safety barriers are also much cheaper than isolated ones. In situations where many safety barriers are needed, the price advantage of Pepperl+Fuchs Zener safety barriers is clearly reflected.