Parameter Structure - Xylem Lowara SM30 Manual De Instalación, Funcionamiento Y Mantenimiento

HIGH PRESSURE
OVERVOLTAGE
OVERTEMPERAT
URE
EXT.TRIP DEVICE
MIN.PRES.THRES
H.
CONVEYOR LIMIT
LOW WATER
ALARM
OVERLOAD P#
PTC P# FAILURE
AUTOTEST FAIL
P#
SENSOR# ALARM

8 PARAMETER STRUCTURE

HIGH PRESSURE
ALARM
with external pressure
switch
EXTERNAL TRIP
DEVICE configured as
Overvoltage /
Undervoltage
EXTERNAL TRIP
DEVICE configured as
Overtemperature
EXTERNAL TRIP
DEVICE configured as
External block
MINIMUM PRESSURE
ALARM (by sensor)
TRIPPING OF
MINIMUM PRESSURE
SWITCH ALARM
LOW WATER ALARM
(by probes/float)
OVERLOAD ALARM /
PTC FAILURE PUMP
no. #
AUTOTEST FAILED
ALARM
SENSOR # ALARM
automatic operation; a manual reset is required.
High pressure for tripping of high pressure switch
connected to AUX1. Blocks pump operation as long
as the alarm lasts. It is active in both manual and
automatic operating mode.
External trip device for over/undervoltage connected
to AUX2.
The board inhibits any function as long as the block
remains.
It is excluded in manual operating mode.
External trip device for overtemperature connected to
AUX2.
The board inhibits any function as long as the block
remains. It is excluded in manual operating mode.
External trip device connected to AUX2.
The board inhibits any function as long as the block
remains.
It is excluded in manual operating mode.
Pressure lower than the set minimum for a time
greater than the set delay.
It is excluded in manual operating mode.
If the alarm is activated for three consecutive times at
intervals of one minute, the board inhibits the
automatic operation; a manual reset is required.
Tripping of minimum pressure switch
CONV.L.SWITCH (AUX3).
If the CONV.L.SWITCH trips on input AUX3, not
during autotest but in normal operation, after waiting
the set delay time the board activates all the pumps in
sequence to restore pressure.
When the presence of the CONV.L.SWITCH alarm
ceases, all the pumps are stopped, if there is no
request from sensors/pressure switches.
Two different situations are contemplated. Tripping of
CONV.L.SWITCH without any request to run the
pumps: in this case there could be a malfunction of
the sensor, of the pressure switches, or of the
adjustment values.
Tripping of CONV.L.SWITCH with the pumps running
following a request for operation; in this case one or
more pumps might not be efficient (incorrect direction
of rotation, damaged hydraulics, closed valve).
It is excluded in manual operating mode.
Low water signal from probe circuit HIGH. LOW,
COM to terminals 22 – 23- 24 causes stopping of all
active pumps.
It is excluded in manual operating mode.
Tripping of the thermal relay or of the PTC external
probe with blocking of the respective pump.
The "Overload/Ptc" signal depends on the set value
(§6.2.8).
Autotest failed due to tripping of CONV.L.SWITCH.
on pump #.
Faulty sensor 4-20 mA alarm.
Sensor signal(s) below the minimum.
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