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TERMINAL CONNECTIONS

Connect the unit as in the diagram below.

 

EXTERNAL DIMENSIONS  unit: mm (inch)

I/O PINS

17.5 (.69)

48 (1.89)

75 (2.95)

83 (3.27)

 

CONNECTION DIAGRAM

+

Installation Base

OUTPUT 1

6

7

8

9

10

11

+

+

OUTPUT 2

POWER

1

2

4

A

B

C

+

+

2-WIRE

TRANSMITTER

+

MONITOR

(1 – 5V DC)

V

CHECKING

1) Terminal wiring:  Check that all cables are correctly con-

nected according to the connection diagram.

2) Power input:  Check the power input voltage.
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.

5) Supply output:  Check that the Transmitter Power Sup-

ply SW located at the bottom of the module is turned on.

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 power supply on and warm up for 
more than 10 minutes.
(Output 1 and Output 2 are linked.)

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.

M8DY

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-5476  Rev.2  P. 2 / 2

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