User Manual
3200 Series
28 Part No HA028651 Issue 11.0 July-12
5.5
Dwell Timer
A dwell timer (‘
TM.CFG’ = ‘
DwEl
’) is used to control a
process at a fixed temperature for a defined period.
In reset
the controller behaviour depends on the
configuration of the END state parameter. See
opposite.
In run
the heating or cooling will come on. Timing
starts when the temperature is within the threshold
‘
THRES’
of the setpoint. If the threshold is set to OFF
the timing starts immediately.
If setpoint ramping is enabled, then the ramp completes
before the timer starts.
In the END state
the behaviour is determined by the
parameter ‘
END.T’
(End type):
OFF
The heating and cooling is turned OFF (resets to
Off)
Dwel
Controls at setpoint1 (resets to Setpoint 1)
SP2
Controls at setpoint 2 (resets to Setpoint 1)
rES
Reset reverts to SP1.– (added from version V2.13)
Note: The dwell period can be reduced or increased
while the timer is running.
5.6
Delayed Timer
‘TM.CFG’ = ‘
DELY
’.
The timer is used to switch on the
output power after a set time. The timer starts
immediately on power-up, or when run.
The controller remains in standby with heating and
cooling off until the time has elapsed. After the time
has elapsed, the instrument controls at the target
setpoint.
Temperature
RUN Digital O/P =
t.run
Reset
Run
RESET Digital input
SP1 (70)
Time
TIMER RUNNING
TIMER END
Scrolling Message
END Digital O/P =
t.End
Run
rUn
End
End
/
OFF
Timer end type (P43)
OFF
SP2
DLL res
SP2
Temperature
SP1
Time
t.tHr
= + n
RUN Digital Output =
t.run
END Digital Output =
t.End
rUn
Flashing display message
Timer Duration
t.dUr
Ramping
Setpoint
PV
rUn
End
rUn
Summary of Contents for XST-2-0-12-1V1-E28
Page 16: ...12 FURNACE TROUBLE SHOOTING ...
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Page 31: ...3216 3208 3204 User Manual 3200 Range Process Controller HA028651 11 Aug 2012 ...
Page 170: ...User Manual 3200 Series 138 Part No HA028651 Issue 11 0 July 12 21 Certificate of Conformity ...
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Page 173: ...Model 2416 Process Controller User Manual Part No HA025041_12 Date August 2014 ...
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