Fig.5.ad
Ref.
Description
T_EVAP Evaporation temperature
MOP
MOP protection
ALARM Alarm
Ref.
Description
PM1
MOP threshold
PM3
Alarm delay
t
Time
PM1 represents the maximum evaporation pressure, expressed in degrees (saturated), above which the
MOP protection and alarm are activated (each with its own delay times). There is a gradual return to
normal operation, to avoid the critical situations arising again.
PM2 represents the integral time for the maximum evaporation pressure protection function. This
replaces the normal PID control during MOP status.
PM2 = 0 ==> MOP protection and alarm disabled
PM3 represents the alarm activation delay after exceeding the MOP threshold. When the alarm is
activated, the following occur:
l
Message ‘MOP’ shown on the display
l
Buzzer activated
The alarm features automatic reset when the evaporation pressure falls below the threshold PM1.
PM4 represents the activation delay MOP protection after the last activation of the solenoid valve.
PM4 = 0 ==> MOP alarm disabled
PM5 allows the local or network solenoid valve (if available), based on the configuration of the system (see
parameter r7), to be closed upon activation of the MOP alarm. The solenoid valve is closed if PM5 = 1.
LSA - Low suction temperature
When the suction temperature falls below the threshold, the alarm is activated after the set delay, closing
the electronic valve and the local or network solenoid valve (if parameter P10 = 1). The alarm is reset
when the suction temperature exceeds the set threshold plus the hysteresis.
Code Description
Def Min Max UOM User
User
terminal
P10
Enable close solenoid valve for low superheat (LowSH) and/or
low suction temp. (LSA)
1 = closing enabled
0
0
1
-
M
NO
P11
LSA: low suction temperature threshold
-45 -50 50 °C/°F M
NO
P12
LSA: alarm delay
0 = alarm disabled
600 0 999
s
M
NO
P11 represents the suction temperature below which the alarm is activated, after the corresponding
delay. The threshold for resetting the alarm is this threshold plus 1°C.
P12 represents the alarm activation delay after exceeding the threshold P11. When the alarm is activated,
the following occur:
ENG
0300086EN rel. 1.0 – 04.09.2018
5. Functions |
79
Содержание MPXone ACS00CB000010
Страница 2: ......
Страница 6: ......
Страница 17: ...2 6 1 Panel model Fig 2 l ENG MPXone 0300086EN rel 1 0 04 09 2018 2 Installation 17...
Страница 18: ...ENG 2 6 2 DIN rail model Fig 2 m 18 2 Installation MPXone 0300086EN rel 1 0 04 09 2018...
Страница 22: ...ENG DIN Fig 2 s RS485 supervisor network Fig 2 t Fig 2 u 22 2 Installation MPXone 0300086EN rel 1 0 04 09 2018...
Страница 107: ......