Cod. +030220151 - Rel. 2.1 - 04/09/98
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c = parameters for the compressor management
COMPRESSOR PARAMETERS Type Min. Max. U.m. Def.
c0 Delay in compressor insertion after switching on equipment C 0 15 mins 0
c1 Minimum time between two successive insertions of
compressor
C 0 15 mins 0
c2 Minimum compressor down time C 0 15 mins 0
c3 Minimum compressor operating time C 0 15 mins 0
c4 Duty setting (compressor safety: 0=OFF, 1=ON) C 0 100 mins 0
cc Duration of continuos cycle C 0 15 hrs 4
c6 Alarm cut-out after continuos cycle C 0 15 hrs 2
Note: for the set times to become operative, the instrument must be switched off and on again.
c0 Delay in switching on compressor and fans (if controlled) after switching on the equipment.
From the moment when the equipment receives its power supply, start-up of the compressor is delayed by a
period equivalent to the value assigned to this parameter. This delay serves to protect the compressor from
repeated start-ups when there is some interruption in the power supply. For example, if the paramater is set
at c0=6, the compressor will wait for six minutes after power is restored before starting up. Thus if there are
several power failures close together (in this case at intervals of less than six minutes), the compressor will
not start up. In the case of installations with more than one compressor, the parameter A0 can also be used
to avoid simultaneous start-ups of several compressors; it is sufficient to assign a different value to A0 for each
compressor.
Default: c0=0 (no minimum period is assigned to the
delay between switching on equipment and activation of
the compressor). Available on IR32S, IRDRSE/S0,
IR32Y, IR32P, IR32C and IRDRC
c1: Minimum time between two start-ups of compressor.
This sets the minimum time in minutes which must elapse between two insertions of the compressor,
independently of the temperature and of the setpoint. By setting this parameter it is possible to restrict the
number of start-ups per hour. For example, if the greatest number of start-ups permitted in an hour must be
10,
it is sufficient to set c1=6.
Default: c1=0 (No minimum interval between two
insertions is set.)
Available on IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C
and IRDRC.
c2: Minimum compressor down-time: this sets the minimum time in minutes for which the compressor
may remain inactive. The compressor will not be started up if the minimum time selected has not elapsed (c2). This parameter is
useful for equalising pressure after switch-off in the case of installations with hermetic and capillary compressors.
Default: c2=0 (No minimum down-time for the compressor is
set.)
Available on IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C and
IRDRC.
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