Xylem Fixed speed booster sets programming manual/Electronic control board SM30 - Manual (Page 45)

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MIN.PRES.DELAY 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. 0..200 s 20 s
3 MAX.PRES.THRES
H. 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 0..FS bar 0 bar
4 MAX.PRES.DELAY 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. 0..10 s 0 s
5 EXT.AL. DEFINE 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. OVERTEMPER
ATURE
OVERVOLTAGE
EXT.TRIP
DEVICE OVER-
VOLTAGE
6 P1 OVERLOAD P1 OVERLOAD ALARM
Intervention of thermal protection / PTC
pump 1 THERMAL PR.
PTC
DISABLED THERMAL PR.
7 P2 OVERLOAD P2 OVERLOAD ALARM
Intervention of thermal protection / PTC
pump 2 THERMAL PR.
PTC
DISABLED THERMAL PR.
8 P3 OVERLOAD P3 OVERLOAD ALARM
Intervention of thermal protection / PTC
pump 3 THERMAL PR.
PTC
DISABLED THERMAL PR.
9 LOW WATER
ALARM LOW WATER ALARM
Intervention of hardware protection for low
level/pressure on intake
From probe circuit HIGH. LOW, COM to
terminals 22 – 23- 24 YES
NO YES
10 L.O.W. AL.DELAY Delay time in seconds to block pumps for
intervention of protection for low
level/pressure on intake. 10…100 s 10 s
11 CONVEYOR LIMIT 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.
YES
NO YES
12 ALARMS RESET Resets the memory of the Alarms Log. YES
NO NO
Adjusting the Adjusting the Adjusting the Adjusting the Minimum Pressure Switch Alarm ( Minimum Pressure Switch Alarm ( Minimum Pressure Switch Alarm ( Minimum Pressure Switch Alarm (CONV.L.SWITCH CONV.L.SWITCH CONV.L.SWITCH 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.