Thermo Fisher Scientific CryoExtra CE8100 Series
Operation | 21
separated variable (.csv) file that can be opened in
EXCEL. Either a single Controller or a network of
controller may be connected to a host computer. For
more information on computer communication
capabilities, refer to the
section.
•
Serial Printer –
The Controller can be connected directly
to a serial printer via an RS- 485 converter. This allows
Controller events to be printed as they occur. This gives
users the opportunity to keep hard-copy records of the
freezer’s status in addition to the standard event log
saved in the Controller’s memory. This printed data
bypasses the Controller memory and is not given the
opportunity to be altered electronically. For more
information on the printer interface, refer to the
section.
•
MODBUS –
The Controller has RS-485 MODBUS
communication capabilities.
•
One Fill All Fill (OFAF) –
A group of controller can be
networked in order to coordinate fill cycles and reduce
LN
2
transfer losses. For locations with multiple freezers,
this function will increase the filling efficiency and
drastically reduce LN
2
consumption over time.
A sequential or simultaneous OFAF network is possible.
For more information on OFAF networking, refer to the
section.
Event Log And Event Codes
The Controller has a built-in data logging feature that
automatically stores vital, time-stamped information including
temperatures, LN
2
level, liquid usage and any alarms. Data is
logged at a user-defined interval and anytime an event or
alarm status changes. The default log interval is 4 hours. The
Controller is able to store up to 30,000 events in its non-
volatile memory. With a 4 hour log interval, the Controller is
able to store approximately 10 years worth of data. This event
log can be easily downloaded from the Controller using
ControllerConnect. This downloaded file is a.csv file that can
be opened, analyzed and plotted in EXCEL.
Besides being a record of the freezer status, the event log is a
vital tool for diagnosing problems or detecting potential
problems with a freezer. For instructions on how to download
the event log, refer to the
of this manual or the ControllerConnect User Manual (PN
13946348).
Note:
Since the event log is stored in non-volatile memory, it
will be retained and unaffected when the Controller loses
power, is restarted, if the firmware is updated or when the
event log is downloaded. However, resetting the Controller to
defaults will clear the event log. If the event log memory is
exceeded, the oldest event will be deleted to make space for
the most recent event.
Below is a sample event log and a list of event codes. The
event log header displays the version of ControllerConnect
used to download the event log, the Controller’s unit ID and
the Controller’s firmware version. The events are logged so
that Record #1 is the most recent event logged. The event
parameters are logged in the units and format of that
respective category. For example, if the Controller
temperature units are set to be in degrees Celsius, then the
temperature will be logged in degrees Celsius. If the time is
set to a 24 hour clock, then the event log times will be in that
format. Parameter changes will be logged as a string such as
“Parameter number 126 changed from 60 to 180.” Contact
your CryoExtra Distributor or CryoExtra Technical Service for
information regarding these parameter changes.
ControllerConnect v1.1.2
CryoExtra Controller Software ver. 2.00
