Fema I4 Series, Руководство пользователя

Страница: 15 / 24

SERIES I4 · Model I4L
Section INDUSTRIAL . ISOLATED SIGNAL CONVERTERS
www.fema.es 15
13. Configuration menu (cont.)
Input signal low (in mV’)
Input signal high (in mV’)
Output signal low
Output signal high
Process low
Process high
Process decimal point
At the ‘ Advanced scaling ’ ( Ad.Sc ) menu, customize the actual value for
the tare, the input and output signal ranges and, if used, the process
value. When selecting a predefined configuration code, the parameters
are configured according to the code selected. The parameters are
accessible for manual configuration:
• at ‘ Tare ’ ( tArE ) view the actual value of the tare parameter, expressed
in ‘ x.xx ’ mV’ (see section 10.1). To reset the tare value manually set this
parameter to ‘ 0.00 ’. Selecting a new ‘ configuration code ’ (see section
13.1) or a new ‘ signal range ’ (see section 13.2) also restes the ‘ tare ’
value to zero.
• at the ‘ Input low signal ’ ( In.Lo ) parameter configure the low input
signal value. This value is expressed in ‘ x.xx ’ mV’ (see section 10.1).
The parameter value is not affected by changes at the tare value.
• at the ‘ Input high signal ’ ( In.hI ) parameter configure the high input
signal value. This value is expressed in ‘ x.xx ’ mV’ (see section 10.1).
The parameter value is not affected by changes at the tare value.
• at the ‘ Output low signal ’ ( ou.Lo ) parameter configure the low output
signal value. This value is expressed in ‘ x.xx ’ mA or in ‘ x.xx ’ Vdc.
• at the ‘ Output high signal ’ ( ou.hI ) parameter configure the high
output signal value. This value is expressed in ‘ x.xx ’ mA or in ‘ x.xx ’ Vdc.
These four parameters define the relation between the input and the
output signal (see Table 19) and can be modified independently, to match
the specific input-output relation for your application (see Table 20).
Additionally, a process value can be scaled using the last three
parameters of the ‘ Advanced Scaling ’ ( Ad.Sc ) menu. The actual process
value can be accessed through the ‘ display information ’ function (see
section 13.5) or the ‘ messages ’ function (see section 13.8).
• at the ‘ Process low ’ ( Pr.Lo ) parameter, configure the process value
associated to the low input signal value.
• at the ‘ Process high ’ ( Pr.hI ) parameter, configure the process value
associated to the high input signal value.
• at the ‘ Process decimal point ’ ( Pr.dP ) parameter, configure the
decimal point position for the process value.
Advanced scaling
13.4 Advanced scaling
Table 19 | EXAMPLE FOR CODE ‘011’ (0/10 m V=4/20 mA)
Output
4 mA
Input
0 mV’ 10 mV’
20 mA
Selecting the predefined code ‘011’ configures a range of 0/10 mV’=4/20 mA, and
the values configured are as indicated below:
input_low = 0.00 mV’ output_low = 4.00 mA
input_high = 10.00 mV’ output_high = 20.00 mA
Table 20 | EXAMPLE FOR CUSTOM RANGE (-8/+8 m V=1/9 V dc)
Input -8 mV’ +8 mV’
Output
1 Vdc
9 Vdc
To configure -8/+8 mV’=1/9 Vdc, select code 122 (-10/+10 mV’=0/10 Vdc) and
then configure the parameters below:
input_low = -8.00 mV’ output_low = 1.00 Vdc
input_high = 8.00 mV’ output_high = 9.00 Vdc
Tare value (in mV’)