Safe Handling - Siemens SINAMICS S120 Operating Instructions Manual

Safety notes

1.3 Safe handling

1.3 Safe handling
High voltages during operation
When operating this equipment very high voltages develop. Even after switching off the mains
voltage, or while the connected machine is still turning, high voltages can remain for a
prolonged length of time. High voltages can cause death or serious injury if the safety rules
are not observed or if the equipment is handled incorrectly.
● Operate the drive properly.
● Always follow the "The five safety rules (Page 13)" when performing any work.
● Only remove the covers using the methods described by these operating instructions.
● Maintain the drive regularly and correctly.
High voltages from machines still turning and connected
A rotating machine represents a risk as it can induce dangerous high voltages that are not
immediately de-excited. If the connection to the motor is not isolated or grounded, these
voltages can also remain. If live parts are touched, this can result in death and serious physical
injuries.
Before opening the doors, wait until the connected machine has come to a standstill.
High voltages from DC link capacitors
After the mains voltage has been switched off with the "EMERGENCY STOP" pushbutton,
high voltages are still present at the DC link capacitors. In the event of improper handling or
non-observance of the safety instructions, death or serious injury could result.
Wait for the DC link capacitor's discharge time specified on the label on the device. Do not
touch the device during this time. Observe the five safety rules when performing any work.
High auxiliary voltages
High auxiliary voltages are still present even after shutdown. If live parts are touched, this
can result in death or serious physical injury.
Observe the five safety rules when performing any work.
14
WARNING
WARNING
WARNING
WARNING
Applications for Cabinet Modules, liquid cooled
Operating Instructions, 04/2015, A5E35974555A