ero electronic LFS Manuel De Service page 27

Note:When device is working with SMART Note Note Note Note
algorithm the Pb value will be limited by
P29, P30 and P31 parameters.
HyS Hysteresis for ON/OFF control action Hysteresis for ON/OFF control action Hysteresis for ON/OFF control action Hysteresis for ON/OFF control action Hysteresis for ON/OFF control action
This parameter is available only when
Pb=0.
Range: from 0.1% to 10.0% of the input
span.
ti Integral time Integral time Integral time Integral time Integral time
This parameter is skipped if Pb=0 (ON/
OFF action).
Range: from 00.01 to 20.00 [mm.ss].
Above this value the display blanks and
integral action is excluded
Note Note: When the device is working with Note Note Note
SMART algorithm, the minimum value of
the integral time will be limited by P32
parameter.
td Derivative time Derivative time Derivative time Derivative time Derivative time
This parameter is skipped if Pb=0
(ON/OFF action) or P40 = Pi.
Range:From 00.00 to 10.00 mm.ss.
Notes Notes Notes: When device is working with Notes Notes
SMART algorithm the td value will be
equal to a quarter of Ti value.
I P Integral pre-load. Integral pre-load. Integral pre-load. Integral pre-load. Integral pre-load.
This parameter is skipped if Pb=0
(ON/OFF action).
For one control output, it is programma-
ble from 0 to 100 % of the output span.
For two control outputs it is programma-
ble from -100% (100 % cooling)
to 100 % (100 % heating).
Cy1 Output 1 cycle time Output 1 cycle time Output 1 cycle time Output 1 cycle time Output 1 cycle time
Range:From 1 to 200 s.
Cy2 Output 2 cycle time Output 2 cycle time Output 2 cycle time Output 2 cycle time Output 2 cycle time
This parameter is available only if P 7 is
equal to 4.
Range:From 1 to 200 s.
LFS-1-CC.P65 24
rC Relative Cooling gain Relative Cooling gain. Relative Cooling gain Relative Cooling gain Relative Cooling gain
This parameter is available only when
device is configured with two control
outputs and Pb is different from zero.
Range: from 0.20 to 1.00
Note: When the device is working with Note Note
Note Note
SMART algorithm and P28 is set to On
the RCG value is limited in accordance
with the selected type of cooling media:
- from 0.85 to 1.00 when P8 = AIr
- from 0.80 to 0.90 when P8 = OIL
- from 0.30 to 0.60 when P8 = H2O
OLAP Dead band/Overlap between H/C Dead band/Overlap between H/C Dead band/Overlap between H/C
Dead band/Overlap between H/C Dead band/Overlap between H/C
outputs. outputs outputs outputs outputs
This parameter is available only when
device is configured with two control
outputs and Pb is different from zero.
Range: from -20 to 50 % of the
proportional band.
A negative OLAP value shows a dead
band while a positive value shows an
overlap.
rL Set point low limit Set point low limit Set point low limit Set point low limit Set point low limit
Range: from initial scale value (P3) to rH.
Note Note: When P3 has been modified, rL Note Note Note
will be realigned to it
rH Set point high limit Set point high limit Set point high limit
Set point high limit Set point high limit
Range:from rL to full scale value (P4)
Note Note: When P4 has been modified, rH Note Note Note
will be realigned to it
Ramp applied to an increasing set Ramp applied to an increasing set
Grd1 Ramp applied to an increasing set Ramp applied to an increasing set Ramp applied to an increasing set
point change point change point change point change point change
Range: from 1 to 100 digits per minute.
Above this value the display shows "Inf"
meaning that the transfer will be done as
a step change.
Grd2 Ramp applied to a decreasing set Ramp applied to a decreasing set Ramp applied to a decreasing set Ramp applied to a decreasing set Ramp applied to a decreasing set
point changes point changes point changes
point changes point changes
For other details see Grd1 parameter.
GB GB GB GB GB 24
13/07/2004, 14:40