Siemens SIMATIC HMI - Uninterruptible Power Supply; Setting the Uninterruptible Power Supply

Commissioning the device
4.3 Parameterizing the Comfort Panel
Comfort Panels
Operating Instructions, 08/2018, A5E36770603-AC
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4.3.12 Uninterruptible power supply
4.3.12.1 Setting the uninterruptible power supply
An uninterruptible power supply (UPS) ensures that the HMI device is shut down in a
controlled manner after a configurable buffer time in the event of a power failure. This avoids
the loss of data. Connect the UPS to the USB port of the HMI device. You can also configure
a message or the controlled shutdown of the HMI device when the UBS port is faulty.
SITOP DC UPS modules with a rated current of 6 A or more are supported as uninterruptible
power supplies.
Requirement
● The Control Panel is open.
● A UPS is connected to the 24 V DC connection and the USB port of the HMI device.
● The "Uninterruptable Power Supply (UPS) with USB support" option was transferred to
the HMI device with ProSave.
Procedure
1. Open the "UPS Properties" dialog using the "UPS" icon.
2. Change to the "Configuration" tab.
3. If a controlled shutdown of the HMI device is to be performed following interruption of the
power supply:
– Select the check box in the "Battery mode" area.
– Under "min" and "s", enter the time after which the active project on the HMI device is
automatically closed.
NOTICE
Undefined device status if UPS buffer time is insufficient
If the UPS used cannot sustain the power supply for the configured time period, the
HMI device is not shut down in a controlled manner. This may result in damage to
the HMI device.
Make sure that the UPS employed can sustain the power supply over the set time
period.