Commissioning Manual
12 6FC5397-4EP10-0BA8, 07/2018
Electric shock due to connection to an unsuitable power supply
When equipment is connected to an unsuitable power supply, exposed components may carry a hazardous
voltage that might result in serious injury or death.
• Only use power supplies that provide SELV (Safety Extra Low Voltage) or PELV- (Protective Extra Low
Voltage) output voltages for all connections and terminals of the electronics modules.
Electric shock due to damaged motors or devices
Improper handling of motors or devices can damage them.
Hazardous voltages can be present at the enclosure or at exposed components on damaged motors or
devices.
• Ensure compliance with the limit values specified in the technical data during transport, storage and
operation.
•
Do not use any damaged motors or devices.
Electric shock due to unconnected cable shields
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected cable shields.
• As a minimum, connect cable shields and the cores of cables that are not used at one end at the grounded
Arcing when a plug connection is opened during operation
Opening a plug connection when a system is operation can result in arcing that may cause serious injury or
death.
• Only open plug connections when the equipment is in a voltage-free state, unless it has been explicitly
stated that they can be opened in operation.
Electric shock due to residual charges in power components
Because of the capacitors, a hazardous voltage is present for up to 5 minutes after the power supply has been
switched off. Contact with live parts can result in death or serious injury.
• Wait for 5 minutes before you check that the unit really is in a no-voltage condition and start work.
Property damage due to loose power connections
Insufficient tightening torques or vibration can result in loose power connections. This can result in damage due to fire,
device defects or malfunctions.
• Tighten all power connections to the prescribed torque.
•
Check all power connections at regular intervals, particularly after equipment has been transported.
Spread of fire from built-in devices
In the event of fire outbreak, the enclosures of built-in devices cannot prevent the escape of fire and smoke. This can result
in serious personal injury or property damage.
• Install built-in units in a suitable metal cabinet in such a way that personnel are protected against fire and smoke, or
take other appropriate measures to protect personnel.
•
Ensure that smoke can only escape via controlled and monitored paths.
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