gefran 1600 Bedienungsanleitung Seite 28

The timer functionality is enabled in Hrd configuration in hrd.1 parameter setting the code +16 or +48 to activate the selection of two set points.
In the case of enabling, parameters _S.S.t. (start/stop timer) and _ _r.t. (reset timer) define the functioning modality.
The intervention threshold of the tS timer can be set at level 1 of programming with bottom of scale 9999 sec.
The enabling to the timer, as also the reset condition, can occur due to external contact or alarm conditions (AL1, AL2, AL3, ALHb).
The reset function, always active on the status, zero sets the value of the timer and keeps it blocked even if the start is present.
In the absence of enabling (stop) the autoreset condition can be active for which the timer zero sets at each stop.
It is possible to make the timer visible on the SV display during the active counting phase as specified by the diSP parameter.
On reaching the preset time (tS), it is possible to activate a relay of the four available or select set point 2.
IN1
Start
Stop
(*)
IN2
Reset
Timer
0
ts
SP2
SP1
the passage between SP1 and SP2 occurs on the basis of the
GrSP value setpoint gradient (0=immediate passage)
The function is enabled in Hrd configuration in the parameter hrd.1 setting code +64. It allows the setting of 4 set points which can be selected
by means of combinations of digital inputs (IN1, IN2).
The selection between set point 1 and set point 2 can also be carried out by means of front key.
It is possible to visualise the selection between set point 1 / 2 using leds.
SET GRADIENT: if set ≠ 0, when switching on and during the auto/man passage the set point is assumed to be equal to PV, with gradient set it
reaches the local set or that selected.
Every set variation is subject to gradient. The set gradient is inhibited on switching on when the self tuning is enabled.
If the set gradient is set ≠ 0, this is active even on local setpoint variations, which can be set only in the relative SP menu.
The adjustment setpoint reaches the value set with a speed defined by the gradient.
6 • TIMER + 2 SET POINT, TIMER FUNCTION
(*)
if the autoreset
function is enabled
t
t
7 • MULTISET FUNCTION, SET GRADIENT
SP
SP2
SP1
SP3
ON
IN1
IN2
SP
SV
SP1
AL1
SP2
Timer
Reset IN1
SP4
SP1
(*)
(*) in the case of set gradient
t
ON
t
ON
t
28
Abilitation from AL1 active
t
t
ts
t