Fema Electronica S40-P, User Manual

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FEMA ELECTRÓNICA . Series S . S40-P
6
Decimal point
1.10 Configuration menu
Press ‘SQ’ (
<
) for 1 second to access the ‘ configuration menu’.
For a description on how to operate inside the menus see sec -
tion
1.8
. For a full vision of the ‘
configuration menu
’ structure
see section
1.11.
Scaling Input low
Display low
Input high
Display high
To configure the initial set up of the instrument, select the input sig -
nal range, the decimal point position, and scale the reading.
Access the ‘
Input ’ (‘ InP ’) menu to select the input signal range. Op -
tions available are 4/20 mA, 0/10 Vdc, ±20 mA y ±10 Vdc. Select the
rear jumper at position ‘4’ for Vdc or ‘5’ for mA
(see section 1.5).
Access the ‘ Decimal point ’ (‘ dP ’) menu to select the decimal point
position. Move the decimal point by pressing the ‘LE’ (
3
) key.
Scale the reading at the ‘ Scaling ’ (‘ ScAL ’) menu. There are four pa -
rameters to configure :
• ‘ Input low ’ (‘ ILo ’) - minimum input signal, in mA or Vdc with
two decimals.
• ‘ Display low ’ (‘ dLo ’) - reading associated to the minimum input
signal.
• ‘
Input high ’ (‘ IhI ’) - maximum input signal, in mA or Vdc with
two decimals..
• ‘ Display high ’ (‘ dhI ’) - reading associated to the maximum input
signal.
The ‘ Field correction ’ (‘ F.cor ’) functions allows to correct the instru -
ment scaling parameters, when the instrument is being installed on
the field, providing a fast and easy way to compensate offset signals.
To operate the ‘
Field correction ’ (‘ F.cor ’) function for the offset cor -
rection, generate the minimum input signal and access the ‘ Field
low ’ (‘ F.Lo ’) function. Then the following sequence will start
• message with signal type (‘ mA ’ or ‘ Vdc ’)
• message ‘ wait ’ (‘ WAIt ’) in flash mode
• after 5 seconds, message ‘ ok ’ (‘ oK ’) appears
• at this point, press key SQ (‘
<
‘)
• the menu returns to menu entry ‘ Field Low ’ (‘ F.Lo ’)
The instrument has read the input signal and automatically config -
ures the ‘ Input low ’ (‘ I.Lo ’) for you.
Repeat the process generating the maximum input signal and access
the ‘ Field high ’ (‘ F.hI ’) menu. The instrument will read the input sig -
nal and automatically configure the ‘ Input high ’ (‘ I.hI ’) parameter to
match the signal read.
Application - a 0/10 Bar pressure transmitter provides a 4/20 mA out-
put signal. At installation, the operator detects that the reading at
0 Bar is 0.34 Bar and that at 10 Bar the reading is 10.72 Bar. Apply the
‘ Field correction ’ / ‘ F.Lo ’ function while reading is 0.34 Bar and the
instrument will automatically correct the reading to 0.00 Bar. After-
wards, apply the ‘ Field correction ’ / ‘ F.Hi ’ function while reading is
10.72 Bar and the instrument will automatically correct the reading
to 10.00 Bar.
1.10.1 Initial set-up
1.10.2 Field correction
Range de 4/20 mA
Range de 0/10 Vdc
Range de ±20 mA
Range de ±10 Vdc
Input
Field correction
Correction high
Correction low
Wait (5 sec.)
(
<
)
Wait (5 sec.)
(
<
)