M-system Mini-M M2SES2 Instruction Manual page 3

■ DIP SWITCH SETTING
Choose the output function: High/Low output, normal output proportional to the input 1, or loop test output of 0%, 50% and
100%.
Set the DIP switch to appropriate positions before turning on the power supply. No change in the switch positions is valid
while the power is supplied.
OUTPUT SW1-1
High signal (*) OFF
Low signal
Input 1
0%
50%
100%
(*) Factory setting
*1. ON/OFF position is irrelevant.
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
13 – 14 with a multimeter.
3) Input: Check that the input voltage is within 0 – 100% of
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.
■ 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. Be sure to start with the Input 1
adjustment.
1) Turn all DIP switches to OFF positions. (Selecting High
signal)
2) Set Input 2 lower than 0%.
3) Input 1 ZERO (ZERO1): Apply 0% input and adjust out-
put to 0%.
4) Input 1 SPAN (SPAN1): Apply 100% input and adjust
output to 100%.
5) Check Input 1 ZERO adjustment again with 0% input.
6) When ZERO value is changed, repeat the above proce-
dure 3) – 5).
7) Set Input 1 lower than 0%.
8) Input 2 ZERO (ZERO2): Apply 0% input and adjust out-
put to 0%.
9) Input 2 SPAN (SPAN2): Apply 100% input and adjust
output to 100%.
10) Check Input 2 ZERO adjustment again with 0% input.
11) When ZERO value is changed, repeat the above proce-
dure 8) – 10).
SW1-2
OFF
ON OFF
*1 ON
*1 *1
*1 *1
*1 *1
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
SW1-3 SW1-4
OFF OFF
OFF OFF
OFF OFF
ON OFF
OFF ON
ON ON
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.
M2SES2
STAT1 LED STAT2 LED
ON OFF
ON OFF
ON OFF
OFF ON
Blinking ON
ON ON
EM-5098 Rev.3 P. 3 / 3