EVCO EC6708 - Manual (Page 37)

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37
chapter User Menu on the page 32).
AA0 hysteresis (differential)
It is significant exclusively if the parameter AA4 has value 1 or 2, it
establishes the hysteresis (differential) relative to the setpoint estab-
lished with the parameter AA1.
For further informations about the parameter AA0 meaning see the
paragraph Lower pressure alarm on the page 13.
AA1 alarm setpoint
It is significant exclusively if the parameter AA4 has value 1 or 2, it
establishes the pressure below which the lower pressure alarm gets
activated according with the modality established with the parameter
AA4 and it is referred to the suction probe.
For further informations about the parameter AA1 meaning see the
paragraph Lower pressure alarm on the page 13.
AA4 kind of alarm
It establishes the kind of lower pressure alarm that the instrument must
manage, as indicated:
0
= the lower pressure alarm never gets activated
1 = absolute lower pressure alarm
2 = lower pressure alarm relative to the working setpoint.
For further informations about the parameter AA4 meaning see the
paragraph Lower pressure alarm on the page 13.
AA7 disabling time to the lower pressure alarm activa-
tion
It is significant exclusively if the parameter AA4 has value 1 or 2, it
establishes the time that disables a lower pressure alarm activation
from the moment in which the lower pressure alarm happens.
For further informations about the parameter AA7 meaning see the
paragraph Lower pressure alarm on the page 13.
AAn number of lower pressure alarms enough to give
the instrument locking
It establishes the number of lower pressure alarms enough to give the
instrument locking.
If the parameter AAn has value 0 the instrument locking never hap-
pens.
The increasing of the lower pressure alarms counter gets given also by
the lower pressure digital input activation.
For further informations about the parameter AAn meaning see the
paragraph Lower pressure alarm on the page 13.
LABEL MIN. MAX. U.M. UPPER PRESSURE ALARM
Ab0 0.001 255 (3) hysteresis (differential)
Ab1 -999 9999 (3) alarm setpoint
Ab4 0 2 --- kind of alarm
Ab7 0.00 4.15 min,sec disabling time to the upper pressure
alarm activation
Abn 0 15 ---- number of upper pressure alarms
enough to give the instrument lock-
ing
USER MENU
User Menu configuration parameters
output K1 ... 8 locking digital inputs, as indicated:
0
= NO contact
1 = NC contact.
The parameters tyP1 ... 8 belong to the Configurator Menu; see the
chapter Configurator Menu on the page 25.
For further informations about the parameter i1P meaning see the
paragraph Digital inputs on the page 13.
i2P
kind of contact of the user condenser fans associ-
ated to the output K1 ... 8 locking digital inputs
It is significant exclusively if the parameter tyP1 ... 8 has value FAn, it
establishes the kind of contact of the user condenser fans associated to
the output K1 ... 8 locking digital inputs, as indicated:
0
= NO contact
1 = NC contact.
The parameters tyP1 ... 8 belong to the Configurator Menu; see the
chapter Configurator Menu on the page 25.
For further informations about the parameter i2P meaning see the
paragraph Digital inputs on the page 13.
i4P
input configuration (freon level or by-pass regula-
tion)
It establishes the configuration of the input, as indicated:
0
= freon level
1 = by-pass regulation.
i5P kind of contact of the input freon level/by-pass
regulation
It establishes the kind of contact of the input, as indicated:
0
= NO contact
1 = NC contact.
i6P kind of contact of the condenser fans safety dig-
ital input
It has the same significance of the parameter i5P
i7P
kind of contact of the upper condensing quantity
digital input
It has the same significance of the parameter i5P
i8P
kind of contact of the lower pressure digital input
It has the same significance of the parameter i5P
LABEL MIN. MAX. U.M. LOWER PRESSURE ALARM
AA0 0.001 255 (3) hysteresis (differential)
AA1 -999 9999 (3) alarm setpoint
AA4 0 2 --- kind of alarm
AA7 0.00 4.15 min,sec disabling time to the lower pressure
alarm activation
AAn 0 15 ---- number of lower pressure alarms
enough to give the instrument lock-
ing
Notes
• the symbol (3) indicates that the unit of measure depends from
the parameter /5P and from the parameters /A6 and /A7 (the
parameters /5P, /A6 and /A7 belong to the User Menu; see the