salmson LRE Serie Instalacion Y Puesta En Servicio página 82

English
Overload protection
Behaviour after being switched on
Switching frequency
72
The "pump kick" function can be disabled via menu <5.8.1.1>. As
soon as the pump is switched on via the control system, the count-
down to the next pump kick is interrupted.
A pump kick lasts 5 seconds, during which the motor turns at the set
speed. The speed can be set between the minimum and maximum
permissible pump speeds in menu <5.8.1.3>.
Factory setting: minimum speed
If both pump heads on a double pump are switched off, for example,
via External off, both will run for 5 seconds. Pump kick takes place
even in "main/standby operation" mode if pump cycling takes longer
than 24 hours.
NOTE:
A pump kick is also attempted even in case of a fault.
The remaining operating time until the next pump kick can be read off
in menu <4.2.4.0>. This menu is only available when the motor is
stopped. The number of pump kicks can be read off in menu <4.2.6.0>.
All faults, with the exception of warnings, that occur during the pump
kick switch the motor off. The corresponding error code is shown on
the display.
NOTE:
The pump kick reduces the risk of the impeller jamming in the pump
housing. This is intended to ensure pump operation after a long
standstill. If the pump kick function is deactivated, secure starting of
the pump can no longer be guaranteed.
The pumps are equipped with an electronic overload protection func-
tion which switches off the pump in the event of an overload.
For data storage, the electronic modules are equipped with a non-
fading memory. The data is retained no matter how longer the module
is disconnected from the power supply. When the power supply is re-
established, the pump continues to run with the values set prior to
disconnection from the power supply.
During commissioning, the pump will work with the factory settings.
• The service menu deals with the setting and converting of individual
pumps; see chapter 8 "Operation" on page 81.
• To correct faults, also see chapter 11 "Faults, causes and remedies"
on page 102.
• For additional information about the factory settings, see chapter 13
"Factory settings" on page 112.
CAUTION! Risk of property damage!
Modifying the settings for the differential pressure sensor can lead
to malfunctions. The factory settings are configured for the sup-
plied Salmson differential pressure sensor.
• Default value: input In1 = 0–10 volts, pressure value correction = ON
• When using the supplied Salmson differential pressure sensor,
these settings must not be changed!
Modifications are only needed if another differential pressure sen-
sor is used.
At high ambient temperatures, the thermal load on the electronic
module can be reduced by lowering the switching frequency
(menu <4.1.2.0>).
NOTE:
Carry out the switch over/change only when the pump is at a standstill
(not when the motor is running).
The switching frequency can be changed via the menu, the CAN bus
or the IR-Stick.
Lower switching frequencies result in increased noise levels.
Salmson 11/2017