EVCO EC6708 User Manual
Page 16
Every Control S.r.l.
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upper condensing quantity alarms counter as long as the number of
upper condensing quantity alarms enough to give the instrument lock-
ing gets reached (the increasing of the upper condensing quantity
alarms counter gets given also by the upper condensing quantity dig-
ital 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 AC4 establishes the kind of upper condensing quantity
alarm that the instrument must manage: the upper condensing quan-
tity alarm never gets activated, absolute upper condensing quantity
alarm (in this case the instrument activates the upper condensing quan-
tity alarm when the quantity read by the condensing probe rises above
the alarm setpoint) ...
... or upper condensing quantity alarm relative to the setpoint estab-
lished with the parameter F 1 (in this case the instrument activates the
upper condensing quantity alarm when the quantity read by the con-
densing probe rises above the condenser fans activation setpoint of the
alarm setpoint value).
Speaking of upper condensing quantity alarm
• the parameter i7P establishes the kind of contact of the upper
condensing quantity digital input
• the parameter AC0 establishes the hysteresis (differential) rela-
tive to the alarm setpoint
• the parameter AC1 establishes the alarm setpoint value
• the parameter AC4 establishes the kind of upper condensing
quantity alarm that the instrument must manage
• the parameter AC7 establishes the time that disables an upper
condensing quantity alarm activation from the moment in which
the upper condensing quantity alarm happens
• 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 parameters i7P, AC0, AC1, AC4, AC7, ACn and A 6 belong to the
User Menu; see the chapter User Menu on the page 32.
FUNCTIONING
Upper condensing quantity alarm