M-system M3LV Instruction Manual page 6

■ INPUT & OUTPUT RANGING
[Example] Setting both input and output to 1 – 5 V DC
1) Run Mode: Confirm that the green LED is blinking (model
M3LV-x/A) or the green LED turns on (model M3LV-x/B).
2) Input Ranging Mode: Hold down MODE button for longer
than 5 seconds until the LD1 red LED is ON and the LD2
red LED is blinking.
3) 0% Input Ranging: Apply the desired minimum input
level (e.g. 1 V) from the simulator and Hold down DOWN
button until the LD1 blinks for approx. 2 sec. and then
turns OFF. When you release the button, the LD1 is
returned to ON.
The blinking LD1 means that the value is stored in the
memory. If the LED does not change, the entered level
may be inappropriate: too small a span, or out of usable
range (same for all steps).
4) 100% Input Ranging: Apply the desired maximum input
level (e.g. 5 V) from the simulator and Hold down UP
button until the LD1 blinks for approx. 2 sec. and then
turns OFF. When you release the button, the LD1 is
returned to ON.
5) Output Ranging Mode: Hold down MODE button for
approx. 2 sec. and confirm that the LD3 red LED instead
of LD2 is blinking.
6) 0% Output Ranging: Increase or decrease the simulated
input until the meter shows the desired minimum output
level (e.g. 1 V). Hold down DOWN button until the LD1
blinks for approx. 2 sec. and then turns OFF. When you
release the button, the LD1 is returned to ON.
7) 100% Output Ranging: Increase or decrease the simulated
input until the meter shows the desired maximum
output level (e.g. 5 V). Hold down UP button until the
LD1 blinks for approx. 2 sec. and then turns OFF. When
you release the button, the LD1 is returned to ON.
8) Run Mode: When calibration is completed, hold down
MODE button for approx. 2 sec. and confirm that: the
LD1 green LED is blinking in case of M3LV-x/A; and the
LD1 green LED is ON in case of M3LV-x/B.
■ INPUT TYPE & RANGE
INPUT TYPE
DC Current
DC Millivolt
DC Voltage
■ OUTPUT TYPE & RANGE
OUTPUT TYPE
DC Current
DC Voltage, Narrow Spans
DC Voltage, Wide Spans
MINIMUM SPAN
2mA
100mV
1V
MINIMUM SPAN
1mA
250mV
1V
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
■ ZERO & SPAN ADJUSTMENTS
After the transmitter is installed and operational, fine zero
and span tuning can be performed as explained below. Both
zero and span are adjustable within ±15%.
1) Run Mode: Confirm that the green LED is blinking (model
M3LV-x/A) or the green LED turns on (model M3LV-x/B).
2) Fine Zero Adjustment Mode: Hold down MODE button
for 1 or 2 seconds until the LD1 red LED is ON and the
LD2 green LED is blinking.
Use UP (increase) and DOWN (decrease) buttons to
adjust the output to 0%.
3) Fine Span Adjustment Mode: Hold down MODE button
for approx. 2 sec. and confirm that the LD3 green LED
instead of LD2 is blinking.
Use UP (increase) and DOWN (decrease) buttons to
adjust the output to 100%.
4) Run Mode: When fine adjustment is completed, hold
down MODE button for approx. 2 sec. and confirm that:
the LD1 green LED is blinking in case of M3LV-x/A; and
the LD1 green LED is ON in case of M3LV-x/B.
Note 1. Calibration steps can be skipped when not needed by
repeating pushing MODE buttons.
Note 2. There is no stated order of setting 0% and 100% levels
or no limitation of entering values for multiple times
within one step of Calibration Mode. Signal level is
stored each time the respective UP or DOWN button
is pressed.
■ I/O RANGE LABEL
Blank I/O range labels are included in the product package.
Write in the configured ranges and put the label on the side
as shown below.
I/O Range Label (included in the product package)
INPUT
OUTPUT
MAXIMUM RANGE
0 to 20mA
-2.5 to +2.5V
-10 to +10V
M3LV
Table 6
MAXIMUM RANGE
0 to 20mA
-1000 to +1000mV
-10 to +10V
Table 7
CONFORMANCE RANGE
0 to 24mA
-3 to +3V
-11.5 to +11.5V
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