Product description 3
UPS functionality
3.6 UPS functionality
With the UPS functionality (uninterruptible power system), the device is provided with
a backup function. This means that, in the case of a supply voltage failure, the user data
(retain variables, logbook data) are saved before the device is switched off.
In order to minimise the power consumption during the buffer time and increase safety
during the buffer times, circuitry parts that are not required can be optionally switched
off if the supply voltage fails (e.g. backlight of the screen).
Panel Controller / HMI p300
UPS functionality via... Internal buffer capacitor
Storage medium for backup data SD/SDHC card
Buffer time sufficient for ... 128 kB of retain/logbook data
3.7 ”Real Time Clock” functionality
The operating system is provided with the CMOS-RTC time via a maintenance-free clock
chip.
The CMOS-RTC time is stored internally for at least 28 days. Then the time must be reset
manually, e.g. via the »WebConfig« (parameter 91). A battery is not required.
3.8 Resetting the device (Reset)
To reset the device, press the reset button (Ш 17).
Two options are provided:
• Press the reset button for 4 ... 10 s:
-A reset of the complete system is carried out.
-A ll LEDs are off during the reset.
-After a successful reset, the POWER-LED is flashing blue.
• Press the reset button for more than 10 s:
- The Lenze standard setting is loaded and a restart is carried out.
-A ll LEDs are off during the reset.
-A backup image is loaded.
-After a successful reset, the POWER-LED is flashing blue.
Lenze • BA_p300 • 2.0
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