M8XM2 / M8XM3
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-5472 Rev.3 P. 4 / 4
POTENTIOMETER FIELD CALIBRATION
Particular positions of the potentiometer can be captured
(stored in memory) as ZERO (0%) or SPAN (100%) points by
manipulating Zero/Span Selector and UP/DOWN switches.
■
HOW TO CAPTURE ZERO POINT
1) Set the potentiometer to its desired 0% position.
2) Slide the Zero/Span Selector to the position Z while
pressing DOWN switch. Confirm the LED pattern show-
ing “Potentiometer Field Calibration Mode” and release
the DOWN switch.
3) Press DOWN switch to execute the compensation. Con-
firm that the LED turns off when you press DOWN
switch.
4) Put the Zero/Span Selector back to the position OFF.
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HOW TO CAPTURE SPAN POINT
1) Set the potentiometer to its desired 100% position.
2) Slide the Zero/Span Selector to the position Z while
pressing DOWN switch. Confirm the LED pattern show-
ing “Potentiometer Field Calibration Mode” and release
the DOWN switch.
3) Press UP switch to execute the compensation. Confirm
that the LED turns off when you press DOWN switch.
4) Put the Zero/Span Selector back to the position OFF.
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HOW TO RESET
While in the Potentiometer Field Calibration Mode, you can
reset the calibrated status to its ex-factory state by pressing
both UP/DOWN switches at once. Confirm that the LED
turns off when you press these switches.
I/O RANGE MODIFICATION
Configurator Software is used to change input types and
ranges.
For changing output ranges, set the Output Range Selector
and then select by Configurator Software.
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FRONT VIEW
■
SIDE VIEW
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BOTTOM VIEW
Zero/Span Selector
UP Switch
Status Indicator LED
Configurator Jack
DOWN Switch
Output Range Selector
V
I
S
Z
I
OFF
Z
S
V
Output Range Selector
OUTPUT RANGE
SW POSITION
V2Z1: -10 – +10 V / 0 – 20 mA DC
I
V2V2: -10 – +10 V / -10 – +10 V DC
V
STATUS INDICATOR LED
The unit is provided with a status indicator LED which
blinks in different patterns indicating various status of its
CPU. When it is functioning within normal parameters, the
LED blinks in a regular pattern of ON and OFF.
The following figure indicates typical patterns.
LED PATTERNS
STATUS
Normal
Programming Mode
Out. 1 Calibration Mode
Out. 2 Calibration Mode
Burnout
Potentiometer Field
Calibration Mode
100 ms
ON
OFF
MAINTENANCE
Regular calibration procedure is explained below:
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CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the output
signal for the respective input signal remains within accu-
racy described in the data sheet. When the output is out of
tolerance, recalibrate the unit according to the “CALIBRA-
TION” explained earlier.