ENG
Code Description
Def Min Max UOM User
User
terminal
P9
LowSH: alarm delay
0 = alarm disabled
600 0 999
s
M
NO
P10
Enable close solenoid valve for low superheat (LowSH) and/or
low suction temp. (LSA)
1 = closing enabled
0
0
1
-
M
NO
Fig.5.ac
Ref.
Description
SH
Superheat
LowSH Low superheat protection
ALARM Alarm
Ref.
Description
P7
LowSH protection threshold
P9
Alarm delay
t
Time
MOP: Maximum evaporation pressure
When starting or restarting a system, the compressors may not be able to satisfy the simultaneous cooling
requirements of all the units in the system. This may cause an excessive increase in the evaporation
pressure and consequently the corresponding saturated temperature. When the evaporation pressure,
expressed in degrees (saturated), rises above the threshold, after a certain settable time the system enters
MOP protection status: PID superheat control is stopped and the controller starts gradually closing the
valve with an integral action to return the evaporation pressure below the set threshold. The protection
function has been designed to allow a gradual return to normal operating conditions, that is, when the
critical conditions have ended, the controller temporarily operates with a higher superheat set point until
the function is automatically reset.
Important:
if this action causes the complete closing of the electronic valve, the solenoid valve is also
closed, even if this is a network solenoid valve, when enabled. The alarm signal with the message
‘MOP’ on the display is delayed from the activation of the protection function and is automatically
reset as soon as the saturated temperature falls below the threshold.
Code Description
Def Min Max UOM User
User
terminal
PM1
MOP: max saturated evap. temp. threshold
50 -50 50 °C/°F
S
NO
PM2
MOP: integral time
10
0
240
s
M
NO
PM3
MOP: alarm delay
0 = function disabled
0
0
999
s
S
NO
PM4
MOP: function activation delay when starting control
2
0
240
s
M
NO
PM5
MOP: close solenoid valve
0/1 = No/Yes
0
0
1
-
S
NO
PM6
MOP: max suction temp. threshold
50 -50 50 °C/°F
M
NO
78
| 5. Functions
0300086EN rel. 1.0 – 04.09.2018
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: ......