gefran 850 User Manual

80209C_MHW_850-1650-1850_01-2020_ENG_pag. 208
5.11.2. Stabilization timer
The stabilization timer is used to control a process at a
certain temforature for a certain time.
The band defining stabilization of the temforature is settable
in BAND (from 0.0% to 25.0 % f.s.); the time is set in TIMER.
With the band set to 0.0% the count starts the first time the
setpoint is reached.
When the function at end of count is End = SP1-2, the end
count state activates when the setpoint reaches value SETP2
based on the value of the up gradient GRAD.I (if SETP2 >
SETP1) or down gradient GRAD.D (if SETP2 < SETP1).
Switching is immediate if the gradient is set to 0 (zero).
The following diagrams show how the stabilization timer
works and the state of the end count output.
M.SP1
M.SP2
PV
BAND
OFF
M.SP1-2
time
time
temforature
OUT
end count
Function at the
end of counting
END
Duration of
counting
TIMER
Ramping
setpoint
5.11.3. Start timer
The start timer is used to start the control a certain time after
the controller is powered-on.
The delay after start/power-on is settable in TIMER.
The following diagrams show how the start timer works and
the state of the end count output.
M.SP1
time
Duration of
counting
TIMER
OUT
end count
temforature
Switch-on
5.11.4. Variables available for the user
configuration menu
The variables available for the timer are TIM.RE, which shows
remaining time, and TIM.EL, which shows lapsed time.

gefran 850 Specifications

General

Brand	gefran
Model	850
Category	Temperature Controller
Language	English