Timer; Start/Stop Timer - gefran 650 Abbreviated Manual

5.11. Timer

The timer is enabled on the MODE configuration menu by
selecting TIMER = On.
In case of enabling, select the function F.tiM on the TIMER
submenu by choosing among:
• ST.STP: Start/Stop timer
• STABL: stabilization timer
• SWITC: power-on timer
When the count is on, you can see the timer value on the
SV display, on the F display, or on the bargraph by setting
the parameters dS.SP = TIM.EL, dS.F = TIM.EL or bArG =
TIM.EL, respectively.
You can also assign a message to be displayed when the
count is on.
When the set TIMER time is reached, you can:
• activate an OUT1...OUT4 output configured with
F.ou.x = TIMER,
• go to software off with End = OFF,
• select setpoint 2 with End = SP1-2.
Controlling timer from keyboard
If the digital inputs are not enabled, the timer is controlled
when TIM.EL is displayed by using thei
follows:
• pressed with timer stopped = START
• pressed with timer running = STOP
• + pressed for 2 seconds = RESET

5.11.1. Start/Stop Timer

By selecting the options, you can alternately assign the
StSt start/ stop timer function to:
• a digital input IN.DIG;
• an active alarm ALRM1 or ALRM2 or ALRM3 or
ALRM4 or AL.HB;
• a serial SERIA.
You can select the true POSIT state or false NEGAT state
for the start/stop command.
With parameter rESE, you can alternately select the timer
reset mode:
• autoreset with timer in stop AUT.RS;
• from digital input IN.DIG;
• from active alarm ALRM1 or ALRM2 or ALRM3 or
ALRM4 or AL.HB;
• a serial SERIA.
You can select the true POSIT state or false NEGAT state
for the reset command.
The timer setpoint is settable with a full-scale of 9999 se-
conds.
The reset function, always active on the state, resets the Ti-
mer value and keeps it blocked even if start is present.
In the absence of enabling (stop), the autoreset condition
can be active, which resets the timer at every stop.
The timer can also be controlled (start, stop
and reset) with Function Blocks. In this case,
the start and reset commands are in OR with
the ones defined with the StSt and rESE para-
meters.
40524-04 Rev0
Gefran 650/1250/1350 Temperature Controller – Abbreviated Manual
The following diagrams show timer behavior when enabling
from digital input and from alarm are used.
Switching between SETP1 and SETP2 is based on the value
of the up gradient GRAD.I (if SETP2 > SETP1) or down gra-
dient GRAD.D (if SETP2 < SETP1).
Switching is immediate if the gradient is set to 0 (zero).
SP1/SP2 are managed only if the Multiset function is
enabled, as indicated in the End parameter
Enabling from digital input
Start
Stop
Reset
Timer
, keys as
SETP2
SETP1
(*) if the auto reset function is enabled
Enabling from alarm
SP / SV
SETP1
ALRM1
SETP2
Timer
Reset IN1
5. Examples and applicative notes
IN1
(*)
IN2
TIMER
TIMER
time
time
time
time
time
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