Danfoss Optyma Plus, Инструкции по применению

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Condensing unit controller
6.7 Maximum discharge
gas temperature
The temperature is recorded by sensor Td.
If variable speed control is chosen for the
compressor, this control will initially reduce the
compressor capacity if the Td temperature
approaches the set maximum value. If higher
temperature is detected than the set max.
temperature, the fan’s speed will be set to 100%.
If this does not cause the temperature to drop,
and if the temperature remains high after the set delay time, the compressor will be stopped.
The compressor will only be re-started once the
temperature is 10 K lower than the set value. The
above mentioned re-start restrictions must also
be complete before the compressor can start once
again. If the delay time is set to ‘0’, the function
will not stop the compressor. The Td sensor can be
deactivated (o63).
6.8 High pressure
monitoring
6.9 Low pressure
monitoring
6.10 Pump down limit
6.11 Data communication
During regulation, the internal high pressure
monitoring function is able to detect an over the
limit condensing pressure so that the regulation
can continue.
However, if the C73 setting is exceeded, the
compressor will be stopped. If, on the other hand, the signal comes from the
interrupted safety circuit connected to DI3, the
compressor will immediately be stopped and the
fan will be set to 100%.
When the signal is once again ‘OK’ at the DI3 input,
the regulation will resume.
During regulation, the internal low pressure
monitoring function will cut out the compressor
upon detecting a suction pressure that falls below
the lower limit, but only once the minimum ON time is exceeded. An alarm will be issued. This
function will be time delayed, if the compressor
starts at low ambient temperature.
The compressor will be stopped if a suction
pressure that falls below the set value is registered,
but only once the minimum ON time is exceeded.
The controller is delivered with built-in MODBUS
data communication and can be connected to
an ADAP KOOL® network. If a different form of
data communication is requested, a LON RS-485
module can be inserted in the controller.
The connection will then be made on terminal RS
485.
Important:
All connections to the data communication
must comply with the requirements for data
communication cables.
All condensing units are delivered with controllers
which are factory pre-set.
See below table with factory setting of controllers
integrated into condensing units and controllers
supplied separately for service replacement
(when controller is supplied as spare part for
service replacement its factory settings are slightly
different and should be adjusted according to
controller unit specific settings in paragraph 6.12
and application specific requirements).
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FRCC.PC.044.A6.02
Application Guidelines