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9.1.3.17 Signalling outputs (potential-free contacts) for duty
diesel pump
The control panel of the diesel pump can be connected with remote
devices such as, for example, the Grundfos remote acoustic-visual
alarm.
The control panel has the following relay outputs available on the
terminal board. For detailed information, refer to the wiring diagram
of the control panel.
Technical characteristics of the contacts:
•
Voltage: 115 V
•
Current: 2 A
•
Class: AC1.
Relay outputs
Description
The closing of the contact indicates the
actual start of the diesel pump.
Pump in operation
Two outputs are available: one can be used
to start the fan of the room ventilation
system when the pump is in operation.
The closing of the contact indicates the
intervention of one of the following alarm
conditions: battery charger failure, over- or
General
under-voltage batteries, mains power
alarm (cumulative)
failure, low oil pressure, high engine
temperature, start failure, operating mode
selector not in automatic position, fuel
reserve, oil/water heater.
The closing of the contact indicates
Failure to start
the engine start failure after six
unsuccessful attempts.
The closing of the contact indicates the
alarm generated by the operating mode
Operating mode not
selector set in "0" or "TEST" position. The
in automatic
diesel pump is not ready to start in case of
request.
The closing of the contact indicates that
Control panel failure
the DPC 300 control unit does not work
properly.
This output contact can be set
to indicate one of the following three
conditions (not cumulative):
AUX
•
fuel reserve
Programmable
•
battery charger failure, over-voltage or
1)
contact
under-voltage
•
power failure
•
pre-heating system protection alarm
1)
This contact is not available on the terminal board, but must be
connected on the DPC 300. Refer to the wiring diagram for cabling.
Contact type: AC1, potential-free relay contacts.
Maximum voltage: 115 V.
Maximum current: 2 A.
9.1.3.18 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.
Refer to the dedicated instructions (part of the scope of supply) for
the Modbus configuration.
30
9.2 Operating modes
Each pump installed in the system, regardless of jockey or duty
pump either driven by electricity or diesel, is operated and
controlled through a dedicated control panel.
The mode of operation must be set individually on each control
panel according to the specific needs.
Refer to the dedicated sections to each control panel for the
available functions and the relative activation procedures.
Related information
9.1.1.1 Operating modes of jockey pump
9.1.2.1 Manual operating mode of electric pump
9.1.2.2 Automatic operating mode of electric pump
9.1.3.2 Manual operating mode of diesel pump
9.1.3.3 Automatic operating mode of diesel pump
9.1.3.4 Emergency operating mode of diesel pump
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