ECKELMANN UA 300 D, Manual

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Function of UA 300 D
22 Version 2.03 27. Juni 2008
3.2.10 Archiving operating data
3.2.10.1 Temperature recording
Temperature recording is only provided for systems not equipped with higher−level temperature recording (e.g.
CI 3000 Store Computer). Temperature readings of the return air / room air sensors of both temperature zones
and the status of alarm, cooling, defrosting and door are saved to a ring buffer at 15−minute intervals for a period
of one year.
This data recording is not sufficient to comply with the requirements of EU Regulation 37/2005 on
monitoring temperatures in means of transport, warehousing and storage of frozen foods.
Local temperature recording (UA 300 D AC/AS/TC/TS)
Temperature is recorded at 15−minute intervals in the flash memory of the UA 300 D AC/AS/TC/TS.
The recorded data can be read out on the BT 300 x Operator Interface under Archive. Data readout on a PC is
made via the CI 320 interface. A TTY converter (available as accessory) is required for readout on a PC .
Temperature recording on CI 3000 Store Computer (UA 300 D AC/AS/CC/CS)
The UA 300 D records temperature at 15−minute intervals and transmits the data via the CAN bus to the CI
3000 Store Computer for archiving.
3.2.11 Temperature recording to EU Regulation 37/2005
A separate temperature recorder, e.g. the UA 300 L, must be used for temperature recording in compliance with
EU Regulation 37/2005 on monitoring temperatures in means of transport, warehousing and storage of frozen
foods . See UA 300 L documentation.
3.2.12 Clock
The internal clock of the UA 300 D registers the date and time of day. Automatic adjustment for daylight saving
changes (last weekend in March and October) can be selected.
Software clock without backup
As standard the internal clock is designed as a pure software clock, which means that time is counted up with
the quartz frequency of the processor. Time is stored in the EEPROM in cycles and from there is loaded on re-
starting the controller. The clock is not battery−backed and stops when power supply to the UA 300 D is interrup-
ted.
CAN software clock
When a CAN bus is connected, the above software clock is synchronized in cycles by a higher−order device
equipped with a real−time clock (normally the CI 3000 Store Computer or AL 300 Operator Terminal). This
means that the correct time is immediately available on restarting and time is exactly the same for all stations of
the CAN bus.
Real−time clock
The UA 300 D can optionally be fitted with a real−time clock (UA 300 D AC/AS/TC/TS). This clock is battery−bak-
ked and keeps running in an electric power failure. When a real−time clock is fitted, it synchronizes the above
software clock in cycles. This is intended to accommodate stand−alone operation of the UA 300 D. When a CAN
bus is connected, the real−time clock and software clock are synchronized via the CAN bus.