EVCO EC6708 - Manual (Page 14)

Every Control S.r.l.
Via Mezzaterra 6, 32036 Sedico Belluno ITALY • Phone 0039-0437-852468 (a.r.) • Fax 0039-0437-83648 • [email protected] • www.everycontrol.it 14
Activating the lower pressure digital input the instrument activates the
lower pressure digital input alarm (see the paragraph Alarms on the
page 46) and it increases a lower pressure alarms counter as long as
the number of lower pressure alarms enough to give the instrument
locking gets reached (the increasing of the lower pressure alarms
counter gets given also by the lower pressure alarm activation; see the
paragraph Lower pressure alarm on the page 14); to unlock the
instrument turn off and turn on again the instrument.
Speaking of digital inputs
• the parameter i1P establishes the kind of contact of the user
compressor associated to the output K1 ... 8 locking digital
inputs
• the parameter i2P establishes the kind of contact of the user
condenser fans associated to the output K1 ... 8 locking digital
inputs
• the parameter i5P establishes the kind of contact of the freon
level digital input
• the parameter i6P establishes the kind of contact of the con-
denser fans safety digital input
• the parameter i7P establishes the kind of contact of the upper
condensing quantity digital input
• the parameter i8P establishes the kind of contact of the lower
pressure digital input
• the parameter AAn establishes the number of lower pressure
alarms enough to give the instrument locking
• the parameter ACn establishes the number of upper condens-
ing quantity alarms enough to give the instrument locking
• the parameter A 6 establishes the time that must pass from the
moment of a previous alarms counter increasing in order that
the counter get cleared
the parameter i1P, i2P, i5P, i6P, i7P, i8P, AAn, ACn and A 6 belong to the
User Menu; see the chapter User Menu on the page 32.
LOWER PRESSURE ALARM
When the pressure read by the suction probe falls below the alarm
setpoint the instrument activates the lower pressure alarm (see the
paragraph Alarms on the page 46) and it increases a lower pressure
alarms counter as long as the number of lower pressure alarms enough
to give the instrument locking gets reached (the increasing of the
lower pressure alarms counter gets given also by the lower pressure
digital input activation; see the paragraph Digital inputs on the page
13); to unlock the instrument turn off and turn on again the instrument.
The parameter AA4 establishes the kind of lower pressure alarm that
the instrument must manage: the lower pressure alarm never gets
activated, absolute lower pressure alarm (in this case the instrument
activates the lower pressure alarm when the pressure read by the
suction probe falls below the alarm setpoint) ...
... or lower pressure alarm relative to the working setpoint (in this case
the instrument activates the lower pressure alarm when the pressure
read by the suction probe falls below the working setpoint of the alarm
setpoint value).
Speaking of lower pressure alarm
• the parameter i8P establishes the kind of contact of the lower
FUNCTIONING
Digital inputs - Lower pressure alarm