M3DY
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-2666 Rev.2 P. 3 / 3
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WIRING INSTRUCTIONS
• Applicable wire size
Solid:
0.2 to 2.5 mm
2
(0.55 to 1.75 dia.)
Stranded: 0.2 to 2.5 mm
2
Tinning wire ends may cause contact failure
and therefore is not recommended.
Ferruled: 0.2 to 1.5 mm
2
(0.55 to 1.35 dia.)
The following Phoenix Contact terminals are
recommended:
AI 0,25-8YE
0.2 to 0.25 mm
2
AI 0,34-8TQ
0.25 to 0.34 mm
2
AI 0,5-8WH
0.34 to 0.5 mm
2
AI 0,75-8GY
0.5 to 0.75 mm
2
AI 1,0-8RD
0.75 to 1.0 mm
2
AI 1,5-8BK
1.0 to 1.5 mm
2
• Expose wire conductors by 8 mm (0.31”).
8 mm
8 mm
4 mm dia.
max.
4 mm dia.
max.
Wire exposure
Recommended
ferruled wire
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
11 – 12 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4) Output: Check that the load resistance meets the de-
scribed specifications.
ADJUSTMENT PROCEDURE
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any cali-
bration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
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HOW TO CALIBRATE THE OUTPUT SIGNAL
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
1) ZERO: Apply 0% input and adjust output to 0%.
2) SPAN: Apply 100% input and adjust output to 100%.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
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 “ADJUST-
MENT PROCEDURE” explained earlier.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
