gefran 650 User Manual

80208G_MHW_650-1250-1350_01-2017_ENG
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5.11.2. Stabilization timer
The stabilization timer is used to control a process at a cer-
tain temperature for a certain time.
The band defining stabilization of the temperature is settable
in BAND (from 0.0% to 25.0 % f.s.); the time is set in TIME.
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.
5. Examples and applicative notes
OUT
end count
Duration
of counting
TIMER
SP1
SP2
Ramping
set point
PV
BAND
OFF
SP1-2
function at the
end of counting
END
time
time
temperature
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 TIME.
The following diagrams show how the start timer works and
the state of the end count output.
5.11.4. Variables available for the user confi-
guration menu
The variables available for the timer are TIM.RE, which shows
remaining time, and TIME.EL, which shows lapsed time.
time
temperature
Durations
from counting
TIMER
SP1
OUT
end count
Switch-on

gefran 650 Specifications

General

Brand	gefran
Model	650
Category	Temperature Controller
Language	English