CBS V1500AB - Feature Details: SEQ;OFAF System; SEQ;OFAF System

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SEQUENTIAL FILL
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SIMULTANEOUS FILL
SEQ/OFAF system: (See page 16 screen # 7)
SEQUENTIAL MODE (recommended):
• Connectall2301controllerstoyourLN2supplysource.
• Select“Sequential”modetomaintainoptimumllpressureandsignicantlyreduceLN2transferloss.
• OncetherstcontrollerreachesitsHighLevelSetPoint,itwillactivatethenextcontroller.Thisprocess
will continue until all linked controllers have reached their High Level Set Point sequentially.
SIMULTANEOUS MODE:
• Connectall2301controllerstoyourLN2supplysource.
• Select“Simultaneous”mode.
• AllfreezerswillbegintollatthesametimeuntilalllinkedcontrollershavereachedtheirHighLevelSet
Point simultaneously.
Connection:
Connect all 2301 controllers you want linked using a two conductor wire going from one 2301 control-
lers SEQ/OFAF output to the next 2301 SEQ/OFAF input. Continue making these connections until all the desired
2301 controllers are connected in a complete loop. To set the system each controller must be powered o and
back on to reset.
Custom BioGenic Systems recommends selecting “Sequential”. This mode allows freezers to ll one at
a time with a primed and cold supply system making it easier to maintain proper lling pressure and reducing
LN2 transfer loss. This is more ecient than a keep cold system.
For best results with large pipeline LN2 supply systems, adjustment to the source alarm timer may be
required. Please contact Custom BioGenic Systems with any questions regarding the function and setup of the
SEQ/OFAF feature. In the event of an alarm status that stops the freezer from reaching the High Level Set Point,
the 2301 controller will not trigger the next freezer in line to ll. However the auto ll function always takes
priority over the SEQ/OFAF settings. The next freezer to ll will trigger the SEQ/OFAF system. Custom BioGenic
Systems has programmable timers factory set to stop the system from going into a continuous loop. Given this
feature is connected using a simple two conductor wire relay closures, an innite number of 2301 controllers
can be connected to this system.
FEATURE DETAILS
Go to custombiogenics.com/technicalguides.html
for more information.