Fema Electronica M60-P, Руководство пользователя

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FEMA ELECTRÓNICA . Series M . M60-P
6
1.10 Configuration menu
Press ‘SQ’ (
<
) for 3 seconds 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
.
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. Select
rear jumper at position ‘5’ (for mA), or ‘4’ (for Vdc and potentiom -
eters)
(see section 1.5)
.
• Select ‘ 420 ’ for 4/20mA
• Select ‘ 010 ’ for 0/10Vdc
• Select ‘ b20 ’ for ±20mA
• Select ‘ b10 ’ for ±10Vdc
• Select ‘ P-5K ’ for potentiometers with nominal value between 200
Ohms and 5 KOhms
• Select ‘
P-5M
’ for potentiometers with nominal value between
5KOhms and 5 MOhms. Then introduce the value of your potenti -
ometer, in KOhms
• Select ‘ PSIV ’ to connect to a potentiometer that is already pow -
ered from an external element. The meter will not generate exci -
tation voltage but will read the excitation voltage provided to the
potentiometer.
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, Vdc or % of the
potentiometer value, with two decimals.
• ‘ Display low ’ (‘ dLo ’) - reading associated to the minimum input signal.
• ‘ Input high ’ (‘ IhI ’) - maximum input signal, in mA, Vdc or % of the
potentiometer value, with two decimals.
• ‘ Display high ’ (‘ dhI ’) - reading associated to the maximum input signal.
The ‘
Field correction
’ (‘
F.cor
’) functions allows to correct the instrument
scaling parameters, when the instrument is being installed on the field,
providing a fast and easy way to compensate offset signals (only available
for process signals).
To operate the ‘
Field correction ’ (‘ F.cor ’) function for the offset correction,
generate the minimum input signal and access the ‘ Field low ’ (‘ F.Lo ’) func -
tion. 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 configures 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 signal 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 output
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 cor-
rection
’ / ‘
F.Lo
’ function while reading is 0.34 Bar and the instrument will
automatically correct the reading to 0.00 Bar. Afterwards, 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
Field correction
Correction high
Correction low
Wait (5 sec.)
(
<
)
Wait (5 sec.)
(
<
)
Decimal point
Scaling Input low
Display low
Input high
Display high
Range de 4/20 mA
Range de 0/10 Vdc
Range de ±20 mA
Range de ±10 Vdc
Input
Potentiometer (< 5 KOhms)
Potentiometer (< 5 MOhms)
Value in KOhms
Passive