3.4 - ELECTRICAL CONNECTION DRAWING
8A-AC1 (3A-AC3) 250 VAC
SSR: 12 VDC / 15 mA
10
DC
9V
BATT.
+
TT 34
SUPPLY
1 23
CNT EN
RESET
VOLT. SUPPLY
FREE VOLT. CONT.
RESET
C (+)
CNT EN
INPUTS
54 6
NONCC C
789
-
+
+
RELAY:
NONC
11 12
-
4 - OPERATING MODE
4.1 – FUNCTIONING OF THE COUNTING COMMANDS
The counting can be enabled and disabled through the frontal key
U, or through the remote inputs CNT EN and RES.
The operating mode of the key U is defined by the parameter "t",
the operating mode of the input CNT EN is defined by the
parameter "E" while the input RES always works as reset, i.e. it
stops and resets the counting when it is activated and moreover it
has priority on the other commands (when it is activated it doesn't
allow the starting of the counting).
When the instrument is predisposed for the continuation of the
counting also without power supply, during the counting under
conditions of lack of supply the only active command is the RESET
one, which can be given only from the frontal key U.
When the instrument is supplied through the battery it is not
therefore possible to make the counting start again once stopped.
4.2 – FUNCTIONING OF THE DISPLAY
The led SET/CNT is used to indicate the access into the
programming (flashing fast), the counting in action (flashing each
second), the counting interrupted before the term (lighted fixed) or
the counting finished and the state of reset (off).
After the reset, the display visualizes 0000 if the counting mode is
programmed as UP (par. "C" = 1) or it visualizes the programmed
set value if the counting mode is programmed as DOWN (par. "C"
= 2).
During the counting, the display visualizes the value of time that
spends in UP or in DOWN mode.
If the back-up mode has been programmed to continue the
counting in action without power supply, the display remains lighted
but with an inferior brightness (with the purpose to limit as much as
possible the absorption from the battery).
4.3 - OUT1 OPERATING MODE
The instrument can be programmed by the parameter "F1" to
operate in any of the following 5 modes:
F1 = 1 - DELAYED :
On receiving the START signal, the instrument starts counting time.
When the set time value “t1” has been reached, the instrument
enables the output OUT1.
The output is disabled by the RESET signal.
RESET
OUT1
START
off offON
t1
F1 = 2 - FEEDTHROUGH :
On receiving the START signal, the instrument enables the output
OUT1.
The output is disabled when the set time value “t1” has been
reached.
The output will be enabled again after the transmission of a RESET
signal and a subsequent START signal.
OUT1
RESET
START
ON
off
t1
F1 = 3 - ASYMMETRICAL OSCILLATOR START ON:
This operating mode allows the user to enter two SET times “t1”
and “t2”, and therefore also involves the "S2" parameter .
On receiving the START signal, the output OUT1 is immediately
enabled and remains enabled for the time period t1.
Then the output is disabled and remains disabled for the time
period t2.
This procedure goes on until a RESET signal is transmitted.
off
OUT1
RESET
START
t1
offoff
t2t2
t1 t1
F1 = 4 - ASYMMETRICAL OSCILLATOR START OFF:
This operating mode allows the user to enter two SET times “t1”
and “t2”, and therefore also involves the "S2" parameter .
On receiving the START signal, the output remains disabled until
the set time period “t1” has expired.
Then the output is enabled.
The output is disabled again when the set time period “t2” has
expired. This procedure goes on until a RESET signal is
transmitted.
t2
OUT1
RESET
off
START
t1
offoff off
t2
t1
t1
F1 = 5 - ONE CYCLE ASYMMETRICAL OSCILLATOR START
OFF:
The operation results similar to the "F1"=4 with the only difference
that only one cycle of OFF/ON is performed.
To the start signal the output OUT1 remains disabled for the time
“t1".
When the time “t1” is expire the output will be on for the time “t2”.
The cycle will be enabled again after the transmission of a RESET
signal and a subsequent START signal.
START
RESET
OUT1
off off
t2
t1
ON
4.4 - OUT2 OPERATING MODE
The instrument can be programmed by the parameter "F2" to
operate in any of the following 4 modes:
F2 = 1 - Output
OUT2 operating like OUT1
The output OUT2 exactly operates like the output OUT1 so that to
be able to have two output contacts.
F2 = 2 - Output
OUT2 operating as instant contact
TECNOLOGIC spa - TT 34 - OPERATING INSTRUCTIONS - Vr. 01 - ISTR 06086 - PAG. 3
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