Italtecnica Nettuno 2.0 Manual De Instrucciones página 45

GROUP 3 : INPUT/OUTPUT PARAMETERS
3.0 Command
Source PRES
3.1 Set-point 2
input
3.2 Ext.Enable
input
3.3 Ext. error
Input
3.4 Function
of relay 1 OFF
3.5 Function
of relay 2
3.0 - Motor control source: this parameter defines the control source for
calculating the motor frequency. These options are available:
PRES (pressure): operation proceeds on the basis of the pressure read by
the sensor 4-20mA
MAN (manual): the motor is started up via the keypad of Nettuno and the
speed can be adjusted using the keys "+" and "-".
0-10V (analogue input): regulation is based on the signal from the
analogue input of the I/O board. The frequency is calculated considering
that 0V corresponds to 0Hz and 10V corresponds to the maximum motor
frequency. When the value calculated by the analogue sensor is below the
stop frequency (parameter 1.3), the pump is stopped
3.1 - Input of set point 2: enables the input for the secondary set point.
This contact can be set to NO or NC mode. When this input is switched, the
active pressure set point for regulation becomes parameter 0.4.
OFF
3.2 - Permissive input: sets the input for an external permissive. This
contact can be set to NO or NC mode. The pump is only started when the
input is in the correct status
OFF
3.3 - Error input: sets the input for an external error. This contact can be
set to NO or NC mode. The pump is stopped and an error message appears
on display when the input changes status. This can be used for connection
OFF
of an external float, or flooding sensor.
3.4 - Relay 1 function: defines the function associated with the output
relay 1. The admissible settings are:
OFF: relay disabled
ALL: alarm output; the relay is switched in the event of an error
P.ON: pump ON, the relay is switched when the pump is running
AUX: auxiliary pump; the relay is used for control of an auxiliary
pump
3.5 - Relay 2 function: defines the function associated with the output
relay 2. The settings are identical to those described for parameter 3.4
OFF
.
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