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9.1.2.5 Automatic stop function for electric pump
In some countries and for specific applications, it is allowed for
the duty pump to stop automatically.
When this function is enabled, the duty pump stops automatically
when the pressure in the system exceeds the stop threshold of the
starting pressure switches, and remains there for a certain
period which is set by an adjustable timer.
This function is disabled at the factory. If necessary and allowed by
the local regulation, it can be activated by the user during
commissioning by following the steps below.
1. Set the operating mode selector to "zero".
2. Power up the control panel by turning the mains switch to ON
position. The green LED is lit and the pump is stopped.
3. Simultaneously press and hold STOP button and TEST LEDs
button for more than five seconds. During this operation, all the
LEDs are lit.
4. After five seconds, the LEDs P1 and P2 will flash.
5. Release STOP button and TEST LEDs button.
6. By pressing START button, the function can be activated and
the desired time can be set. Each press
of START button lights up a different LED with the meaning
given in the following table:
7. After selecting the desired setting, wait about 10 seconds
without pressing any button. The control panel saves the
configuration.
To check the status of the automatic stop, repeat the first five
steps. The LED lights will indicate the setting of the timer. After 10
seconds, the system exits programming mode and reverts back to
standard operating mode.
24
9.1.2.6 Signalling outputs (potential-free contacts) for duty
electric pump
The outputs listed below in accordance with the EN 12845 standard
are provided for supervising the pump set from a control room:
Signalling
Electric mains
Motor voltage,
or
non-
automatic oper
ating mode
Starting
request
Pump in
operation
Failure to start
Contact type: AC1, potential-free relay contacts.
Maximum voltage: 115 V.
Maximum current: 2 A.
9.1.2.7 Modbus communication
The control panel is equipped with a communication interface for
Modbus RTU networks, therefore it can be integrated into a
supervision system. Through an appropriate configuration, it is
possible to remotely view all the information available in the panel,
including the status of the LEDs and all the alarms.
Function
Refer to the dedicated instructions (part of the scope of supply) for
disabled
the Modbus configuration.
5 min. delay
10 min. delay
20 min. delay
40 min. delay
60 min. delay
Description
Mains voltage is missing.
These outputs can indicate one of the
following conditions:
•
There is no voltage to the motor when the
pump is requested to start.
•
The operating mode selector is positioned on
TEST or 0 (the group is not ready to start if
requested).
Request for starting the electric pump.
The electric pump is in operation (two outputs are
available, one used to start up the fan of the
room ventilation system when the pump is in
operation.)
The pump did not start on request.
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