GE RPV311, Техническое руководство

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RPV311 Chapter 4
– Configuration
RPV311-TM-EN-7 67
The <R
ENAME
> button allows user to rename the digital channel.
The <R
EMOVE
> button allows user to delete the digital channel.
7 DC Channels
The signal of the transducer (±10 V or 0-20 mA) is converted in to the desired physical
measurement using a first order transfer function with the parameters of gain (
𝐴 )
and offset (
𝐵
) defined by the user:
𝑦 = 𝐴𝑥 + 𝐵
where 𝑦 is the converted value and 𝑥 is the value read by the DC channel in Volts or
Amps.
The RMS value of the DC channels (transducers) is calculated every cycle.
To add a new DC channel select the DC
C
HANNELS
section and fill in the following:
The I
DENTIFIER
text field allows user to enter a single code for the channel being
defined (maximum 15 characters). No editing allowed;
The I
NPUT
scroll box allows user to define the input to which each DC channel is
connected. No editing allowed;
The F
REQUENCY REFERENCE
scroll box allows user to select a reference voltage circuit;
The G
AIN
and the O
FFSET
text field allows user to define the transfer connected
transducer function;
The U
NIT
text field allows user to define the connected transducer unit (maximum 6
characters, letters only).
Once the DC channel is created, it shows in the configuration interface menu. When
selecting the DC channel, a screen shows the characteristics of the DC channel
selected, as shown in Figure 26. It is possible to edit the frequency reference, gain,
offset and unit.