Ascon tecnologic e34B User Manual

Ascon Tecnologic - e34B - OPERATING INSTRUCTIONS - PAG. 8
a contact that is NO in normal operation then closed
during the alarm (see alarm memory);
-t To control a silenceable alarm device through a con-
tact that is NC in normal operation then opened during
the alarm;
-L Control an alarm that cannot be silenced through a
contact that is NC in normal operation then opened
during the alarm;
-n To control an alarm with a memory function through
a contact that is NC in normal operation then opened
during the alarm;
on To command a device that must be turned ON when
the instrument is ON. The output is therefore deac-
tivated when the instrument is not powered or is in
standby mode. This mode of operation can be used
as a control of the shop window lighting, anti-fogging
resistors or other utilities;
HE To control a heating device in neutral zone (rHC = nr);
L1 Showcase light connected to Normal/Eco mode. The
output turns ON when the Normal mode is active while it
is turned OFF when the Eco mode is active;
L2 Internal cell light. The output is always OFF and only
switches ON from a digital input signal when it is con-
figured as door opening switch (iFi = 1, 2, 3);
oF Output disabled.
If one of the outputs is configured as auxiliary output (= Au),
its function is set by parameter oFo and its operation can be
conditioned by the time set at parameter otu.
oFo parameter can be configured for the following functions:
oF Auxiliary output not active;
1 Temperature control output delayed with NO con-
tact: the auxiliary output is activated with a delay that
can be set with parameter otu applied to the output
configured as ot. The output is then turned OFF at
the same time as the ot output is disabled. This func-
tion mode can be used as a command for a second
compressor or for all other working utilities according
to the same ot output conditions, but which must be
delayed after the start up of the compressor to avoid
excess electricity absorption;
2 Activation by digital input. The output is activated by
a digital input signal if correctly configured (iFi = 9).
These commands have a bi-stable (toggle) function (at
first pression the output is activated, at the second is
disabled). The Aux output can be turned OFF auto-
matically after the time set at parameter otu.
When otu = oF the output is activated and deactivated only
manually, via the digital input. Differently, the output, once
activated, is turned OFF automatically after the otu time.
This mode of operation can be used as a control of the shop
window lighting, anti-fogging resistors or other utilities.
If present, the internal buzzer can be configured by param-
eter obu for the following functions:
oF Buzzer always disabled;
1 The Buzzer sounds when an alarm is active;
2 The Buzzer sounds when a key pressed (no alarm);
3, 4 The Buzzer sounds both when a key pressed and
when an alarm is active.
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.
C3 Cooling with three automatic modes
The instrument operates in cooling mode only, but this
selection activates automatic switching between the
three Normal/Eco/Turbo modes (described at para-
graph “Operating modes”).

Ascon tecnologic e34B Specifications

General

Brand	Ascon tecnologic
Model	e34B
Category	Temperature Controller
Language	English