TECNOLOGIC spa - TLK 43
- OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 10
It is advisable not to program a power “St.P” that is too high as the
function is not deactivated when the automatic control power is
found to be lower than the programmed one.
2)
If par. “St.P” = OFF and a value is set on par. “SSt” , at the switch
on, the power calculated by the PID controller is divided by the time
“SSt”, in order to calculate a ramp. The output power starts from 0
and is progressively increased, depending on the calculated ramp,
until the “SSt” time is reached or until the power overcomes the
power calculated by the PID controller.
To disable the Soft-Start function simply program par. “Sst” = OFF
Whenever, a measurement errors occurs during the Soft-Start
execution, the function is interrupted and the instrument gives an
output power as programmed on par. “OPE”.
If the measurement is restored, the Soft-Start is still deactivated.
If it’s desired to activate the Autotuning with Soft-Start set par.
“Auto”=4.
The Autotuning will start automatically at the end of programmed
Soft-Start cycle at the condition that the process value is lower (with
“Func” =HEAt) than [SP- |SP/2|] or higher (with “Func” =CooL) than
[SP+ |SP/2|].
4.14 – ALARM FUNCTION (AL1, AL2, AL3)
4.14.1 – ALARM OUTPUT CONFIGURATION
The alarms depend on the process value (AL1, AL2, AL3) and
before setting them to work, it is necessary to know which output the
alarm has to correspond to.
First of all it is necessary to configure in the groups of parameters
“
]
O ”,
the parameters relative to the outputs required as alarm
(“O1F” , “O2F” ,“O3F” ,“O4F”),
programming the parameter relating
to the desired output as follows :
= ALno
if the alarm output has to be ON when the alarm is active,
while it is OFF when the alarm is not active
= ALnc
if the alarm output has to be ON when the alarm is not
active, while it is OFF when the alarm is active
Note:
In the following examples the alarm’s number is generally
indicated as
n
Access the group
“
]
ALn”,
relating to the alarm to be set and
program which output the alarm signal must be sent to on par.
“OALn”
.
The alarm functioning is instead defined by parameters :
"ALnt "
– ALARM TYPE
"Abn"
– ALARM CONFIGURATION
“ALn”
– ALARM THRESHOLD
“ALnL”
– LOW ALARM THRESHOLD (for band alarm) OR
MINIMUM SET OF ALn ALARM THRESHOLD (for low or high
alarm)
“ALnH”
- HIGH ALARM THRESHOLD (for band alarm) OR
MAXIMUM SET OF ALn ALARM THRESHOLD (for low or high
alarm)
“HALn” -
ALARM HYSTERESIS
“ALnd”
– ALARM ACTIVATION DELAY (in sec.)
"ALni"
– ALARM BEHAVIOUR IN THE EVENT OF
MEASUREMENT ERROR
"ALnt" – ALARM TYPE :
the alarm output can behave in six
different ways.
LoAb = ABSOLUTE LOW ALARM: The alarm is activated when the
process value goes below the alarm threshold set on parameter
"ALn”. With this mode is possible to program the minimum and the
maximum set of “ALn” by “ALnL” and “ALnH” parameters.
HiAb = ABSOLUTE HIGH ALARM: The alarm is activated when the
process value goes higher than the alarm threshold set on
parameter "ALn". With this mode is possible to program the
minimum and the maximum set of “ALn” by “ALnL” and “ALnH”
parameters.
LHAb = ABSOLUTE BAND ALARM: The alarm is activated when
the process value goes under the alarm threshold set on parameter
"ALnL" or goes higher than the alarm threshold set on parameter
"ALnH".
LodE = DEVIATION LOW ALARM: The alarm is activated when the
process value goes below the value [SP + ALn]. With this mode is
possible to program the minimum and the maximum set of “ALn”
by “ALnL” and “ALnH” parameters.
HidE = DEVIATION HIGH ALARM: The alarm is activated when the
process value goes above the value [SP + ALn]. With this mode is
possible to program the minimum and the maximum set of “ALn”
by “ALnL” and “ALnH” parameters.
LHdE = DEVIATION BAND ALARM: The alarm is activated when
the process value goes below the value [SP + ALnL] or goes above
than the value [SP + ALnH]
"
Abn" - ALARM CONFIGURATION:
This parameter can assume a
value between 0 and 15.
The number to be set, which will correspond to the function desired,
is obtained by adding the values reported in the following
descriptions :
ALARM BEHAVIOUR AT SWITCH ON: the alarm output may
behave in two different ways, depending on the value added to par.
“Abn”.
+0 = NORMAL BEHAVIOUR: The alarm is always activated when
there are alarm conditions.
+1 = ALARM NOT ACTIVATED AT SWITCH ON: If, when switched
on, the instrument is in alarm condition, the alarm is not activated. It
will be activated only when the process value is in non-alarm
conditions and then back in alarm conditions.
ALARM DELAY: the alarm output may behave in two different ways
depending on the value added to par. “Abn”.
+0 = ALARM NOT DELAYED: The alarm is immediately activated
when the alarm condition occurs.
+2 = ALARM DELAYED: When the alarm condition occurs, delay
counting begins, as programmed on par. “ALnd” (expressed in sec.)
and the alarm will be activated only after the elapsing of that time.
