The instrument must not to be switched off during the programming mode
otherwise the data inserted in the last session will not be memorized.
5.3 - PROGRAMMING OF INPUT LIMITS
If the instrument is provided with input for normalized signals 4..20 mA,
0..20 mA or 0..10 V it is necessary to set input limits to have the correct
measure indication. For example: if the probe to connect has a range of
0..100 bar, it will be necessary to program 0 on "Lci" parameter (start
scale) and 100 on "Hci" parameter (end scale). At same time, we have to
modify the same parameters to have the decimal point. Example:
instrument connected with relative humidity probe with 20..99 %RH as
range, to have the decimal point it will occour to program "dP" in "on"
mode, "Lci" at 20.0 and "Hci" at 99.9.
6 - DESCRIPTION OF PARAMETERS
Here following are described all the instrument parameters; pls. note that
some of them could do not appear or because are according to the kind of
used instrument or because are automatically not qualified, as they're not
necessary.
d1
- DIFFERENTIAL SWITCHING POINT1: Value between starting and
stopping of output OUT1.
d2
- DIFFERENTIAL SWITCHING POINT2: Value between starting and
stopping of output OUT2.
db
- NEUTRAL ZONE : Value which represents the semi-band of the
Neutral Zone, in the homonymous functioning mode, overlapping Set1.
LS1
- MINIMUM SET1: Minimum possible Set point 1 value or lower
limit of Set point 1.
LS2
- MINIMUM SET2: Minimum possible Set point 2 value or lower
limit of Set point 2.
HS1
- MAXIMUM SET1: Maximum possible Set point1 value or higher
limit of Set point1.
HS2
- MAXIMUM SET2: Maximum possible Set point2 value or higher
limit of Set point2.
Pb
- PROPORTIONAL BAND : Amplitude of the band around Set 1 in
which proportional control takes place.
It
- INTEGRAL TIME : Integral time to be set in algorithm of PID control
mode.
dt
- DERIVATIVE TIME: Derivative time to set in algorithm of PID control
mode.
rSt
- MANUAL RESET : Offset value for proportional band.
od
- OUTPUTS DELAY: Delay from when the control need a variation to
the condition of the outputs to when this actually happens (expr. in sec.).
Non operating on output Out 1 in PID control mode.
Ct
- CYCLE TIME: Cycle time of OUT 1 when proportional control takes
place in PID control mode.
drb
- RESTART BAND DYNAMIC SET: Semiband found in the symmetri-
cal zone in respect with Set outside of which intervenes the functioning of
the Dynamic Set Point.
dSI
- DYNAMIC SET INCREMENT: Increment value of dynamic Set Point
function between two successive instant determines by the par. dSt.
dSt
- DYNAMIC SET INCREMENT INTERVAL: Interval between one
Dynamic Set Point increment and the next (expr. in sec.).
Lci
- LOWER NORMALIZED SIGNALS INPUT LIMIT: Value that the
instrument must to indicate in correspondance of minumum value (4 mA, 0
mA, 0 V).
Hci
- HIGHER NORMALIZED SIGNALS INPUT LIMIT: Value that the
instrument must to indicate in correspondance of maximum value (20 mA,
10 V).
CAL
- CALIBRATION: Positive or negative offset which is calculated on
probe reading before visualizing and to which the control functioning is
also connected. This parameter can be utilized when a recalibration of the
instrument is desired.
Ft
- CONTROL MODE: Allows the selection of one of possible control
modes that the instrument offers: ON/OFF (on), PID (Pi) or Neutral Zone
(nr).
PSE
- INPUT PROBE: Allows selecting, if the instrument type is for
thermocouples or for thermoresistances, various types of probe: J (FE), K
(Cr), S (rh) for thermocouples and Pt100 (Pt), Ni100 (ni) for
thermoresistances. On changing this parameter it is to be remember that
the exit programming phase is to be carried out first afterwhich the
instrument is to be switched off and then on again.
OCO
- SETS CONNECTION: Determines if the two Sets are to be
independent or if Set2 must be considered relative to Set1 (in=independent,
di=dependent).
HC1
- OUTPUT 1 OPERATING MODE: Determines if the output OUT1 is
tocontrol a process which increment is intended as positive or reverse (ex.
Heating, Humidification etc.) or a process which increment is intended as
negative or direct (ex. Cooling, Dehumidification etc.) (H=reverse ,
C=direct).
HC2
- OUTPUT 2 OPERATING MODE: Determines if the output OUT2 is
to control a process which increment is intended as positive or reverse (ex.
Heating, Humidification etc.) or a process which increment is intended as
negative or direct (ex. Cooling, Dehumidification etc.) (H=reverse ,
C=direct).
dP
- DECIMAL POINT : Allows the insertion of the decimal point on the
display and therefore to determine resolution of the reading value (1 or
0,1) but not modified the Set, the Set limits (par. "LS", "HS") and the input
limits (par. "Lci", "Hci"). Example, if the Set was 20 the new Set will be 2.0
(on= with decimal point, oF=without decimal point).(available only for
models provided for PTC, RTD and normalized signals input).
rou
- UNIT OF MEASUREMENT: Determines the visualization of the
temperature in Centigrade or Fahrenheit degree. It is to be remember that
the change of this parameter modifies the visualization but not the Set and
the Set limit ("LS" and "HS") programmed (eg. if the Set was 50°C and the
unit changes, the Set will rest 50°F).
tun
- AUTOTUNING: Determines the selection of Autotuning function for
the automatic setting of PID parameters (n=no autotuning, y=start
autotuning).
hdd
- HALF DIGIT DISPLAY: This parameter allows the approximation of
the last digit at right side. Infact when this parameter is in on mode, on this
digit will be show 0 when the real measuring value is between 0 and 4, and
will be show 5 when the real measuring value is between 5 and 9. For
example if the real measure is 78 display will show 75, or if the real
measure is 70.3 the display will show 70.0 (n=without approximation,
y=with approximation).
tAb
- FIXED PARAMETER
6.1 - PARAMETERS
TABLE
0
-999 ... +999
Calibration
CAL
999
-999 ... 7000
Higher limit for normalized
signal input
Hci
-99
-999 ... 7000
Lower limit for normalized
signal input
Lci
1
1 ... 3600 sec.
Dynamic Set increment
interval
dSt
0
0 ... Probe limit
Dynamic Set increment
dSI
0
0 ... Probe limit
Restart band Dynamic Set
drb
20
1 ... 500 sec.
Cycle time
Ct
0
0 ... 500 sec.
Outputs delay
od
0
Probe limit
Manual reset
rSt
30
0 ...3600 sec.
Derivative time
dt
300
0 ...3600 sec.
Integral time
It
40
1/0,1 ... Probe
limit
Proportional band
Pb
Max.
Probe limit
High/Maximum set 2
HS2
Max.
Probe limit
High/Maximum set 1
HS1
min.
Probe limit
Low/minimum set 2
LS2
min.
Probe limit
Low/minimum set 1
LS1
1
1/0,1 ... Probe
limit
Neutral zone
db
-1
Probe limit
Differential 2
d2
-1
Probe limit
Differential 1
d1
Notes
Def.
Range
Description
Par.
TECNOLOGIC - THP 96
USER MANUAL (I - GB) - Vr. 02 - ISTR 00997 - PAG. 8
