M3LR
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-2662-A Rev.2 P. 8 / 8
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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
M3LR-x/A) or the green LED turns on (model M3LR-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: Press MODE button 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, press
MODE button once and confirm that: the LD1 green LED
is blinking in case of M3LR-x/A; and the LD1 green LED
is ON in case of M3LR-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.
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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.
INPUT
OUTPUT
I/O Range Label (included in the product package)
STATUS INDICATOR LED
Combinations of the three front LEDs (LD1, LD2, LD3)
indicate the transmitter’s operating status by different
blinking patterns.
Examples are shown below.
LD1
LD2
LD3
A
A
A
LD1
LD2
LD3
G
LD1
LD2
LD3
G
LD1
LD2
LD3
LD1
LD2
LD3
A
LD1
LD2
LD3
A
G
G
LD1
LD2
LD3
A
G
LD1
LD2
LD3
A
A
A
R
R
R
G
NORMAL OPERATION (RUN) MODE
ERROR MODE
System Error
Indicates the CPU’s communication error.
DIP SW Error
DIP SW configuration is inappropriate.
Check the DIP SW setting referring to Tables 2 – 7.
Burnout in PC Configuration Mode (Option A)
Burnout in DIP SW Configuration Mode
PC Configuration RUN Mode (Option A)
The transmitter is configured via PC and
is in normal operating conditions.
DIP SW Configuration RUN Mode
The transmitter is configured via DIP SW and
is in normal operating conditions.
Output Saturated in PC Configuration Mode
(Option A)
The output is below -15% or above 115%.
Output Saturated in DIP SW Configuration Mode
The output is below -15% or above 115%.
Amber LED
Green LED
Red LED
OFF
ON
Blink
A
G
R
