Ascon tecnologic e33B User Manual

Ascon Tecnologic - e33B - OPERATING INSTRUCTIONS - PAG. 8
5.6 Temperature control
The instrument controls the temperature with an ON/OFF
action and operates on the outputs configured as ot and
HE depending on the PR1 probe measuring, the acive Set
Point/s SP1 (or SP2, SP3, SPE and SPH), the Hysteresis rd
(or rEd and/or rHd) and the function mode set with rHC.
Using rHC can be set the following functioning modes:
C Cooling;
H Heating.
SP
Temp.
rd
time
offoff
SP
rd
time
ON
rHC =
C
rHC =
H
offoffON ON ON ON ON
Output
ot
Output
ot
Pr1
Temp.
Pr1
Depending on the function mode programmed with parameter
rHC the differential is automatically considered by the control-
ler with positive values for a Refrigeration control (rHC = C)
or negative values for a Heating control (rHC = H).
nr Neutral Zone
SP
off off
ON
Temp.
time
rd
rd
offoff
rHC = nr
ON
ON
HE
ot
Outputs
Pr1
When rHC = nr, the output configured as ot operates with a
cooling action (like rHC = C) while the output configured as
HE operates with a heating action both with the Active Set
Point (SP1, SP2, SP3, SPE or SPH). The intervention differ-
ential (rd/rEd/rHd) is automatically assumed by the control-
ler to have positive values for the cooling action and negative
values for the heating action.
HC Cooling and Heating with independent Set Points
SP
SPH
off off off
Temp.
time
rd
rd
offoff
off
RHC = HC
ON ON ON
ONON
HE
ot
Pr1
Outputs
As in the previous case, when rHC = HC the output configured
as ot operates with cooling action (like rHC = C) while the out-
put configured as HE operates with heating action (rHC = H).
In this case, however, the Set Point for the ot output is the
active one between SP, SPE or SPH, while for the HE output
the Set Point is SPH. The intervention differential for the ot
output is the active between rd, rEd or rHd and is automati-
cally assumed by the controller to have positive values for the
cooling action while for the output HE the differential is RHd
considered with negative values as for the Heating actions.
In this mode, the activation of the Turbo cycle causes the
instrument to operate with Neutral Zone and SPH set point.
C Cooling with three automatic modes
The instrument operates in cooling mode only, but this selec-
tion activates automatic switching between the three
Normal/Eco/Turbo modes (described at the paragraph
“Operating modes”).
The time protections described in the next paragraph
(PP1/PP2/PP3) always work on the ot configured output.
In the event of a probe error, it is possible to set the
instrument so that the ot output continues working in
cycles according to the times programmed with param-
eter rt1 (activation time) and rt2 (deactivation time).
If a Pr1 probe error occurs, the instrument activates
the ot output for rt1 time, then disables it for rt2
time and so on until the error persists.
By programming rt1 = oF the output, in probe error
condition, will always be OFF. On the contrary, pro-
gramming rt1 to any value and rt2 = oF the output,
in probe error conditions, will always be ON.
Remember that the operation of the temperature con-
troller can be conditioned by the following functions:
Compressor protection function and power-on delay,
Defrost, Open door and External alarm with output
block from digital input.
5.7 Compressor protection function and
power-on delay
The “Compressor Protection” function aims to avoid repeated
compressor start-ups controlled by the instrument in cooling
applications or otherwise can be used to add a timed control
on the actuator control output.
This function foresees 3 time controls on the switching ON of
the output configured as ot. The protection consists of pre-
venting the ot output being switched ON during the times set
with parameters PP1, pP2 and PP3 and therefore that any
activation occurs only after all times are elapsed.
1 First control (parameter PP1) foresees a delay to ot out-
put activation (switching-ON delay).
SP
Temp.
time
offoff off off
ON
ON
rd
PP1
PP1
ot
ON
Pr1
Output
PP1 PP1
2 Second control (parameter PP2) foresees an inhibition to
the activation of the output by a time delay that starts when
the output is turning OFF (delay after switching-OFF).
offoff off
ON
SP
time
rd
PP2
ON ON
Temp.
ot
Pr1
Output
PP2 PP2 PP2
3 Third control (parameter PP3) foresees an inhibition to
the activation of the output by a time delay that starts
when the output was turned ON last time (delay between
two switching-ON).
offoffoff
ON
SP
time
rd
PP3
PP3 PP3
PP3
ON ON
Temp.
ot
Pr1
Output
During the output inhibition the LED OUT (Cool or Heat )
blinks. It is also possible to prevent activation of all the outputs
after the instrument is turned ON, for the time set in the param-

Ascon tecnologic e33B Specifications

General

Brand	Ascon tecnologic
Model	e33B
Category	Temperature Controller
Language	English