Fema M40-D User manual - page 8
User’s Manual M40-D
FEMA ELECTRÓNICA - Page 8
Input Menu
The input menu selects the input signal range. Options avail-
able are ±600Vdc, ±100Vdc, ±10Vdc, ±1Vdc, ±100mVdc
±5Adc and ±1Adc.
Jumpers “1234” at the rear of the instrument must be closed
according to the range selected. Otherwise, the display will
show erratical behavior.
Scaling Menu
The display scaling is based on 4 parameters. These param-
eters define the two points of the straight line “signal / display”.
Input Low (“ILo”)
Signal input low
Display Low (“dLo”)
Display low
Input High (“IhI”)
Signal input high
Display High (“dhI”)
Display high
The instrument manages up to 4 alarms. Each alarm is
controlled by the condition “display higher (or lower) than
the configured setpoint”. The front leds are controlled by
the activation / deactivation of the related alarm. The relays
installed on Option1, Option2 and Option3 are controlled by
alarms 1, 2 and 3.
Active (Act) - Value “On/Off”. Defines if the instrument has to
manage this alarm or not. Select “Off” for alarm not managed.
Type (tyPE) - Value “Max/Min”. Defines the behavior of the
alarm as maximum or minimum alarm. The alarms config-
ured as maximum are activated when the display value is
equal or higher than the setpoint. The alarms configured as
maximum are deactivated when the display is lower than
the setpoint. The alarms configured as minimum have the
inverse behavior.
Decimal Point Menu
Select the position for the decimal point. Modify with the LE
button and validate with the SQ button.
Setpoint (SEt) - Value from “9999” to “-9999”. Alarm set point.
Hysteresis (hySt) - Value from “0” to “9999”. Points of hyster-
esis. The hysteresis applies on the deactivation of the alarm.
Delay (dEL) - Value from “0.0” to “99.9” seconds. Delay to be
applied to the relay activation and deactivation. Relays are
activated and deactivated X seconds after the activation /
deactivation of the alarm. The delay affects only to the relays.
The delay does not affect to the front leds.
Setpoint2 (SEt2) - Value from “-9999” to “9999”. Second
setpoint. The second setpoint allows for the creation of acti-
vation windows. If the alarm is configured as maximum with
setpoint 1000 and setpoint2 is configured at 1500, the alarm
will be activated between 1000 and 1500 and the alarm will
be deactivated when display is <1000 and >1500. Setpoint2
is affected on the same way as the setpoint with hysteresis
and delays.
Display Menu
Functions on this menu allow for configuration of the visu-
alization.
Fixed Digits (FIX.d) - Allows a digit to be fixed to a predefined
value (for example, least significant digit fixed to “0”). It is a
condition to fix a digit that all digits to its right are also fixed.
Value “-” shows that the digit is not fixed.
Average (AVr) - Recursive filter applied to display. Value
from “0.0” to “99.9”. The severity of the filter increases with
the value selected. Increasing the severity of the filter makes
the display response slower.
Steps (StEP) - Display changes on predefined steps. Values
are 1, 2, 5, 10, 20 and 50. The display is made in steps of X
counts. For example, select a step of 20 will make the display
to change in steps of 20 (1420, 1440, 1460, ...).
Left Zero (LZEr) - Value “On/Off”. Select “On” to visualize
zeros to the left.
Add Right Zero (rZEr) - Add a zero to the right. Value “On/
Off”. Select “On” to light a fifth digit on the display, placed to
the right (LSD position) and fixed to a value of “0”. Maximum
display reading is now 99990 and minimum -99990.
Maximum (MAX) - Memory of maximum display. Indicates
the maximum value of display since the last reset of the
memory. Memory is reset on the following cases : manual
reset from the Configuration Menu (Maximum), change on
the input signal (Input), modification on the scaling (Scaling),
change on the decimal point (dP), modification of the linear-
ization segments, or instrument power-down.
AlarmX Menu
Auto Correction Menu
Assigns the current input signal value to the Input Low or Input
High configuration parameters. The new values for Input and
Display are displayed.
Auto Low (A.Lo) - Select “A.Lo” to set the current input signal
value to the Input Low configuration parameter.
Auto High (A.hI) - Select “A.hI” to set the current input signal
value to the Input High configuration parameter.