EVCO EC6294 - Manual (Page 2)

gets activated or deactivated, except during the working setpoint setting and the configuration
parameters setting procedures; the LED L5 is associated to the output status, it is turned ON
when the output is activated and it is turned OFF when the output is deactivated.
The output K 4A is associated to the evaporator fans and to the output deactivation setpoint, it
remains continuously activated as long as the temperature read by the evaporator probe reaches
the output deactivation setpoint, when it falls below the output deactivation setpoint of the
hysteresis value (differential) the output gets reactivated and during the status OFF of the
compressor output the output gets forced to the status OFF, except what established with the
parameters of the family F.
The output K 5A is associated to the instrument status: it is forced to the status ON during the
status ON and it is forced to the status OFF during the status STAND-BY.
Activating the multifunction digital input and the locking digital input (available on request
instead of a relay output) the instrument interacts on the outputs activity according what
established with the parameters of the family i.
WORKING SETPOINT SETTING (WORKING TEMPERATURE)
To modify the working setpoint value keep pushed the key T3 (the instrument displays the
actual value) and at the same time push and release over and over the key T1 or T2 as long as
the instrument displays the desired value (keeping pushed the key T1 or T2 the value gets
decreased or increased more quickly): after the modification release the key T3 last; during the
pressure of the key T3 the LED L1 flashes quickly to indicate that a working setpoint setting
procedure is running (to the release of the key T3 the instrument automatically turns out from
the working setpoint setting procedure).
ADDITIONAL INFORMATIONS
-
for the whole period of a corrupted memory data alarm the access to the working
setpoint setting procedure is refused
- the working setpoint is programmable within the limits established with the param-
eters r1 and r2
- the working setpoint value gets stored in a non volatile memory even if a lack of
power supply happens.
CONFIGURATION PARAMETERS SETTING
Configuration parameters are arranged on two levels, to protect the most tricky settings against
undesirable violations and they are arranged in families that can be recognized through the
initial letter of the label.
To gain access to the first level keep pushed at the same time for four seconds at least the keys
T1 and T2 (passed four seconds the instrument displays the label PA).
To select a parameter of the first level push and release over and over the key T1 or T2 as long
as the instrument displays the label of the desired parameter.
To modify the parameter value keep pushed the key T3 (the instrument displays the actual
value) and at the same time push and release over and over the key T1 or T2 as long as the
instrument displays the desired value (keeping pushed the key T1 or T2 the value gets de-
creased or increased more quickly); after the modification release the key T3 last (to the
release of the key T3 the instrument displays the label of the parameter again).
To gain access to the second level enter inside the first level and select the label PA.
Keep pushed the key T3 (the instrument displays the actual value) and at the same time push
and release over and over the key T1 or T2 as long as the instrument displays -19 (keeping
pushed the key T1 or T2 the value gets decreased or increased more quickly): after the modi-
fication release the key T3 last (to the release of the key T3 the instrument displays the label PA
again); keep pushed at the same time for four seconds at least the keys T1 and T2 (passed four
seconds the instrument displays the first parameter of the second level).
To select a parameter of the second level push and release over and over the key T1 or T2 as
long as the instrument displays the label of the desired parameter.
To modify the parameter value keep pushed the key T3 (the instrument displays the actual
value) and at the same time push and release over and over the key T1 or T2 as long as the
instrument displays the desired value (keeping pushed the key T1 or T2 the value gets de-
creased or increased more quickly); after the modification release the key T3 last (to the
release of the key T3 the instrument displays the label of the parameter again).
To turn out from the configuration parameters setting procedure keep pushed at the same time
for four seconds at least the keys T1 and T2 or do not operate with the keys for fifty seconds
at least (time-out exit).
ADDITIONAL INFORMATIONS
-
for the whole period of a corrupted memory data alarm the access to the configura-
tion parameters setting procedure is refused
- the modification of the parameter /A value has not immediate effect; to obtain this
effect, after the modification turn OFF and turn ON again the instrument
- the modification of a parameter value which unit of measure is the hour or the
minute or the second has not immediate effect; to obtain this effect it must not be
executed during the course of the value
- the modification of the parameters u1, u2, u3, u4 and u5 value has immediate ef-
fect; to avoid damages to the connected users, it must be executed during the
status STAND-BY
- the configuration parameters values get stored in a non volatile memory even if a
lack of power supply happens.
NETWORK USE NETWORK USE NETWORK USE NETWORK USE NETWORK USE
PRELIMINARY INFORMATIONS
On request the instrument can be preset to work in a serial network of instruments (slaves)
managed from a master instrument in order to implement some resources in the slaves instru-
ments in correspondence with the implementation of the same resources in the master instru-
ment (compressor output status during the normal functioning, presentation of a request of a
defrost cycle, etc.).
After derived the connections related in Fig. 5, the master instrument reproposes the last
settings stored (see the chapter USE), the resources management of the slaves instruments
locally happens (see the chapter USE), except what established with the parameters of the
family n.
CONFIGURABILITY CONFIGURABILITY CONFIGURABILITY CONFIGURABILITY CONFIGURABILITY
WORKING SETPOINT
LABEL MIN. MAX. U.M. ST.
WORKING SETPOINT
r1 r2 (*) 0 working setpoint
It establishes the temperature associated to the compressor output.
CONFIGURATION PARAMETERS
LABEL MIN. MAX. U.M. ST.
PASSWORD
PA -55 99 --- 0 password (§)
It is the password that permits to gain access to the second level.
LABEL MIN. MAX. U.M. ST.
MEASURE INPUTS
/0 1 4 --- 1 kind of probe
It establishes the kind of probe that the instrument must recognize to its measure inputs, as
indicated:
1 = PTC probe 2 = reserved
3 = NTC probe 4 = reserved.
/1 -55 +99 (*)/8 0 calibration (§)
It establishes a threshold to add algebraically to the signals coming from the measure inputs
(for instance to correct the signals).
/2
0 6 --- 3 digital filter
It establishes a time constant to apply to the signals coming from the measure inputs, as
indicated:
0 = 0 sec. 1 = 0.4 sec.
2 = 1.2 sec. 3 = 3.0 sec.
4 = 8.0 sec. 5 = 19.8 sec.
6 = 48.0 sec.
/8 0 1 --- 1 unit of measure
It establishes the unit of measure with which the temperature gets displayed, as indicated:
0 = the unit of measure is the Fahrenheit degree
1 = the unit of measure is the Celsius degree.
/A 0 1 --- 1 evaporator probe enabling
It establishes if to enable the evaporator probe, as indicated:
0 = the evaporator probe is disabled
1 = the evaporator probe is enabled.
LABELMIN. MAX. U.M. ST. ON-OFF TEMPERATURE REGULATOR ASSOCIATED TO
THE WORKING SETPOINT AND TO THE COMPRESSOR
OUTPUT
r0 +1 +15 (*) +2 hysteresis (differential) (§)
It establishes the hysteresis (differential) relative to the working setpoint.
r1
-55 +99 (*) -50 minimum working setpoint programmable
It establishes the minimum working setpoint programmable; the instrument automatically veri-
fies if the value established with the parameter r1 is below the maximum working setpoint
programmable established with the parameter r2.
r2
-55 +99 (*) +50 maximum working setpoint programmable
It establishes the maximum working setpoint programmable; the instrument automatically veri-
fies if the value established with the parameter r2 is above the minimum working setpoint
programmable established with the parameter r1.
LABELMIN. MAX. U.M. ST.
COMPRESSOR OUTPUT PROTECTION
C0 0 240 (**) 1 disabling time to the output activation from the instru-
ment start
It establishes the time that disables the output activation from the moment of the instrument
start.
C1
0 240 (**) 5 disabling time to the output activation from the previ-
ous activation
It establishes the time that disables the output activation from the moment of the previous
output activation.
C2
0 240 (**) 3 disabling time to the output activation from the previ-
ous deactivation
It establishes the time that disables the output activation from the moment of the previous
output deactivation.
C4
0 1 --- 0 disabling time to the output activation and deactivation
It establishes if to disable the output activation and deactivation for a fixed time, as indicated:
0 = inactive
1 = the output activation and deactivation get disabled for 3 sec.
C5 1 240 (**) 10 cycle time for the output activation during a cabinet
probe failure alarm
It establishes the cycle time for the output activation due to the contribution of the percentage
established with the parameter C6 during a cabinet probe failure alarm.
C6
0 100 % 50 percentage of the cycle time during which the output
gets activated during a cabinet probe failure alarm
It establishes the percentage of the cycle time established with the parameter C5 during which
the output must remain continuously activated in the course of the cycle time during a cabinet
probe failure alarm, except what established with the disabling times to the compressor output
activation.
LABEL MIN. MAX. U.M. ST.
DEFROST REGULATOR
d0 0 99 (**) 8 defrost interval
It establishes the time interval that pass from the moment of the instrument start or from the
moment in which the instrument presents a request of a defrost cycle to the moment in which
the instrument automatically presents the following request of a defrost cycle.
If the parameter d0 has value 0 the instrument never automatically presents a request of a
defrost cycle, except what established with the parameter d4.
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