Siemens SIMATIC IPC PX-39A Operating Instructions Manual page 53

Fully disconnecting the device from the line voltage
Risk of electric shock
The On/Off switch does not fully disconnect the device from the line voltage.
There is also a risk of fire if the device or connecting lines are damaged.
• Always fully disconnect the device from the line voltage before performing work on the
• For control cabinet mounting: Use a central, easily accessible AC circuit breaker close to
• When you install the device, make sure that the power supply connector is easily
• Shut down the operating system and unplug the power plug from the front of the device,
see "Interfaces and operator controls for devices with 24 V DC power supply (Page 14)" or
"Interfaces and operator controls for devices with 100-240 V AC power supply (Page 15)".
The device is switched off and fully disconnected from the line voltage. No trickle current is
flowing.
Hardware reset
With the hardware reset, you can restart the device if it does no longer respond to keyboard
or mouse input. Any running operating system will not shut down safely.
NOTICE
Data loss
If a hardware reset is performed, the device undergoes a hard reboot.
• Data in the main memory is deleted.
• Data on the hard disk drive may be lost.
• The device may be damaged.
Perform a hardware reset only in the case of an emergency.
• Press the on/off switch to trigger a hardware reset, see "Interfaces and operator controls
for devices with 24 V DC power supply (Page 14)" or "Interfaces and operator controls for
devices with 100-240 V AC power supply (Page 15)".
See also
General safety instructions (Page 19)
SIMATIC IPC PX-39A
Operating Instructions, 08/2022, A5E51699601-AA
WARNING
device or when the device will not be used over an extended period of time.
the device, if possible.
accessible.
Commissioning the device
4.2 Switching off the device
53