
Ascon Tecnologic - K_5P SERIES Line - ENGINEERING MANUAL - PAG. 19
[66] tcc - Cycle time of the cooling output
Available: When at least one output is programmed in order
to be the cooling output (c.rEG), [56] cont = PID.
Range: 0.2... 130.0 seconds (from FW r.1.1.0).
1.0... 130.0 seconds (FW until r.1.0.0).
[67] rS - Manual reset (integral pre-load)
It allows to drastically reduce the undershoot due to a
hot restart. When your process is steady, the instrument
operates with a steady power output (e.g.: 30%).
If a short power down occurs, the process restarts with a
process variable close to the set point while the instrument
starts with an integral action equal to zero. Setting a manual
reset equal to the average power output (in our example
30%) the instrument will start with a power output equal to
the value it will use at steady state (instead of zero) and the
undershoot will become very little (in theory equal to zero).
Available: When [56] cont = PID.
Range: -100.0... +100.0%.
[68] Str.t - Servomotor stroke time
Available: When [56] cont = 3Pt.
Range: 5... 1000 seconds.
[69] db.S - Servomotor dead band
Available: When [56] cont = 3Pt.
Range: 0.0... 10.0
[70] od - Delay at power up
Available: When at least one output is programmed as
control output.
Range: oFF Function not used;
0.01... 99.59 hh.mm.
Notes: 1. This parameter defines the time during which
(after a power up) the instrument remains in
stand by mode before to start all other functions
(control, alarms, program, etc.).
2. When a program with automatic start at power up
and “od” function are programmed, the instrument
performs “od” function before to start the program
execution.
3. When an auto-tune with automatic start at
power up and “od” function are programmed, the
autotune will start at the end of “od” delay.
General notes about soft start function
The soft start function allows to limit the power output for
a programmable time ([72] SSt) or up to a programmed
threshold value ([73] SS.tH)(the first of the two).
When soft start function is running the lower display shows
the label SSt alternated to the value selected by [89] diSP
parameter (from FW r.1.1.0).
Setting [72] SSt = inF (soft start always ON) the instrument
does not display the label SSt (from FW r.1.1.0).
[71] St.P - Max. power output used during soft start
Available: When at least one output is programmed as
control output.
Range: -100... +100%.
Notes: 1. When St.P parameter has a positive value, the
limit will be applied to the heating output(s) only.
2. When St.P parameter has a negative value, the
limit will be applied to the cooling output(s) only.
3. When a program with automatic start at power
up and soft start function are programmed, the
instrument performs the soft start and than the
program function.
4. The auto-tune function will be performed after soft
start function.
5. The Soft start function is available also when ON/
OFF contro l is used.
[72] SSt - Soft start time
Available: When at least one output is programmed as
control output.
Range: oFF Function not used;
0.01... 7.59 hh.mm;
inF Soft start always active.
[73] SS.tH - Threshold for soft start disabling
Available: When at least one output is programmed as
control output.
Range: -1999... 9999 engineering units.
Notes: 1. When the power limiter have a positive value (the
limit is applied to the heating action) the soft start
function will be aborted when the measured value
is greater or equal to SS.tH parameter.
2. When the power limiter have a negative value (the
limit is applied to the cooling action) the soft start
function will be aborted when the measured value
is lower or equal to SS.tH parameter.
]SP Group - Set point parameters
The SP group will be available only when at least one output
is programmed as control output (H.rEG or C.rEG).
[74] nSP - Number of used set points
Available: When at least one output is programmed as
control output.
Range: 1... 4.
Note: When you change the value of this parameter, the
instrument operates as follows:
• [81] A.SP parameter will be forced to SP.
• The instrument verifies that all used set point are
within the limits programmed by [76] SPLL end [77]
SPHL. If an SP is out of this range, the instrument
forces it to the maximum acceptable value.
[75] SPLL - Minimum set point value
Available: When at least one output is programmed as
control output.
Range: From -1999 to [76] SPHL engineering units.
Notes: 1. When you change the [75] SPLL value, the
instrument checks all local set points (SP, SP2,
SP3 and SP4 parameters) and all the program set
points ([95] Pr.S1, [100] Pr.S2, [105] Pr.S3, [110]
Pr.S4 parameters). If an SP is out of this range, the
instrument forces it to the max. acceptable value.
2. A [75] SPLL change produces the following actions:
• When [82] SP.rt = SP the remote set point will
be forced to be equal to the active set point;
• When [82] SP.rt = trim the remote set point
will be forced to zero;
• When [82] SP.rt = PErc the remote set point
will be forced to zero.
[76] SPHL - Maximum set point value
Available: When at least one output is programmed as
control output.
Range: From [75] SPLL to 9999 engineering units.
Note: For other details see [75] SPLL parameter.