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Preliminary Advice on Installing Smart Relays Power down the device. Take all necessary measures to avoid unwanted relay triggering. Check to ensure that no voltage is present. Make the necessary ground and short circuit connections. Always follow the instructions stated in this user’s guide. Remember, only qualified personnel are authorized to implement the smart relay. Automation and control devices must be installed so that they are protected against any risk of involuntary actuation. It is essential to ensure that all control system connections meet applicable safety standards. Fluctuations or variations in the mains supply voltage should not exceed the tolerance thresholds stated in the technical characteristics, as they may cause operating failures and lead to potentially dangerous situations. Take care to meet the standards that apply to emergency stop systems in order to avoid potentially dangerous situations. Ensure that releasing the emergency stop system does not cause the automated system to suddenly restart. Take all necessary measures to ensure that an application interrupted by a drop or a break in the supply voltage can continue correctly and also ensure that no dangerous states, no matter how brief, may occur.