M6NSN
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-7905 Rev.5 P. 3 / 3
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CONNECTION DIAGRAM
+
–
OUTPUT
5
6
+
–
INPUT
1
2
+
–
OUTPUT
7
8
+
–
INPUT
3
4
Channel 1
Channel 2
WIRING INSTRUCTIONS
■
SCREW TERMINAL
Torque: 0.5 N·m
■
SOLDERLESS TERMINAL unit: mm (inch)
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Solderless terminals with insulation sleeve do not fit.
Applicable wire size: 0.2 – 2.5 mm
2
3.2 (.13) dia.
4 min.
(.16)
5.8 max.
(.23)
5.5 max.
(.22)
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Input: Check current with an ammeter. Be sure that the
connected transmitter allows the unit’s load value [250 Ω
+ output load resistance].
3) Output: Check that output load is within the permissible
limit of 600 Ω.
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.
■
HOW TO CALIBRATE THE OUTPUT SIGNAL
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the input signal on and warm up for
more than 10 minutes.
1) SPAN: Apply 100% input and adjust output to 100%.
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes. Apply 25%, 50%,
75% and 100% input signal. Check that the output signal
for the respective input signal remains within accuracy de-
scribed in the data sheet. When the output is out of toler-
ance, recalibrate the unit according to the “ADJUSTMENT
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.
