Xylem Lowara SM30 Manual De Instalación, Funcionamiento Y Mantenimiento página 43

2 MIN.PRES.DELA
Y
3 MAX.PRES.THR
ESH.
4 MAX.PRES.DEL
AY
5 EXT.AL. DEFINE
6 P1 OVERLOAD
7 P2 OVERLOAD
8 P3 OVERLOAD
9 LOW WATER
ALARM
10 L.O.W.
AL.DELAY
11 CONVEYOR
LIMIT
12 ALARMS RESET
Adjusting the Minimum Pressure Switch Alarm (CONV.L.SWITCH)
The minimum pressure switch is positioned on the delivery manifold and must be set at the system
minimum pressure, about 0.5 bar below the starting pressure value of the last pump.
Function available only with systems with
a pressure sensor and only if the
respective alarm is enabled (previous
parameter). Delay time in seconds on
blocking intervention for minimum
pressure.
MAX PRESSURE ALARM
Function available only with systems with
a sensor.
Maximum pressure beyond which all the
active pumps are switched off.
To disable, insert pressure = 0 bar
Function available only with systems with
a sensor and if the respective alarm is
enabled (previous parameter).
Delay time in seconds on blocking
intervention for exceeding maximum
pressure.
EXTERNAL FAULT ALARM
Configuration of the indication of an
external alarm connected to digital input
AUX2. Usually a temperature or voltage
overload alarm generated by an external
trip device.
P1 OVERLOAD ALARM
Intervention of thermal protection / PTC
pump 1
P2 OVERLOAD ALARM
Intervention of thermal protection / PTC
pump 2
P3 OVERLOAD ALARM
Intervention of thermal protection / PTC
pump 3
LOW WATER ALARM
Intervention of hardware protection for
low level/pressure on intake
From probe circuit HIGH. LOW, COM to
terminals 22 – 23- 24
Delay time in seconds to block pumps for
intervention of protection for low
level/pressure on intake.
CONVEYOR LIMIT
Tripping of protection against pump
operation below minimum pressure.
Signal arrives from minimum pressure
switch (CONV.L.SWITCH) connected to
digital input AUX3.
Resets the memory of the Alarms Log.
0..200 s 20 s
0..FS bar 0 bar
0..10 s 0 s
OVERTEMP OVER-
ERATURE VOLTAGE
OVERVOLTA
GE
EXT.TRIP
DEVICE
THERMAL THERMAL
PR. PTC PR.
DISABLED
THERMAL THERMAL
PR. PTC PR.
DISABLED
THERMAL THERMAL
PR. PTC PR.
DISABLED
YES YES
NO
10...100 s
10 s
YES YES
NO
YES NO
NO
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