M5SN
EM-2469 Rev.5 P. 2 / 2
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the
connection diagram on the front of the unit.
■
EXTERNAL DIMENSIONS unit: mm (inch)
94 (3.70)
3 (.12)
25 (.98)
41 (1.61)
[3.3 (.13)]
• When mounting, no extra space is needed between units.
DIN RAIL
35mm wide
8–M3.5 SCREW
7.3 (.29)
1 2
3 4
5 6
7 8
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CONNECTION DIAGRAM
+
–
INPUT
3
+
–
5
6
4
OUTPUT
WIRING INSTRUCTIONS
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SCREW TERMINAL
Torque: 0.8 N·m
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 M5SN’s load value [230
Ω + output load resistance].
3) Output: Check that output load is within the permissible
limit of 50 to 350 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) 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:
■
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.
056 222 38 18
www.sentronic.com
SENTRONIC
AG
