“Ensure to include Zener diode as there is a possibility of any influence for switching capability when only using diodes.”
The “diode is for coil surge absorption”, said Omron. The coil is non-polarised, and comes in two versions: 12V (51Ω) or 24V (206Ω), consuming ~2.8W at full voltage and holding at ~700mW.ĭrive to the coil must be in two stages: 100% of nominal voltage for 100ms to 3s, thence at between 45 to 60% for the remaining time the contacts are required to remain closed.Įxternally, both a diode and zener diode are required in anti-series across the coil, with the Zener rated at three times the coil rating, and the diode withstanding 10x the coil rating in reverse. Contact life is 2,000 operations at full rated current and voltage (resistive load, 85☌), this climbs to 6,000 operations at 40A.
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