Sices HS 315, Техническое руководство

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Technical Handbook 37
Using the virtual digital inputs, you can create mixed AND/OR logics (consisting of both AND
and OR). Suppose you want to activate the digital output #1 when the digital inputs #1 and #2
are both active, or when digital input #3 is active.
First, we must associate to the virtual digital input #1 (for instance) and AND/OR logic
configured as AND, which checks that the first two inputs are both active. Then we must
associate to the digital output #1 an AND/OR logic configured as OR, which checks that the
virtual digital input #1 or the digital input #3 are active. In practice, the virtual digital input #1 is
used as “support” for the AND condition. In this case you need not associate a function to the
virtual digital input.
The device is provided with three inputs designed for the connection to the resistive-type
sensors (JM-2, JM-3, JM-4). There is also an input used for measuring their common earth
potential JM-1.
The three values of voltage to the terminals and their corresponding resistance value of the
sensors and the JM-1 voltage value measured are displayed on page S.15; if an input is not
configured, dashes appear.
You can also individually configure the three inputs JM-2, JM-3 and JM-4 as additional digital
inputs that become active when connected to ground. So, these will be displayed in the
configuration menu of the digital inputs and will be manageable exactly as the other inputs.
If one or more inputs are configured as digital inputs, their state is displayed on page S.11 (0
= input not active, 1 = input active). The inputs not configured as digital are displayed with a
dash.
It is not a real measure input: it is used together with the three inputs for resistive sensors and
has not effect on JL-4. Its purpose is to compensate for the lack of equipotentiality between
electric earthing of the device (GND terminal) and of the electric panel and electric earthing of
the gen-set, usually generated by the voltage drop on the connection cables; particularly, this
happens when the connections between electric panel and engine are long and when there is
a power flow in the battery minus and earthing connections, for example due to the presence
of the battery recharge device inside the electric panel.