MG 18JN User manual

BEFORE USE ....
Thank you for choosing us. Before use, please check con-
tents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact our sales office or representatives.
■PACKAGE INCLUDES:
Signal conditioner ...............................................................(1)
■MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation and connection,
hardware setting, and basic maintenance procedures.
When you need to change software settings, please refer to
the Operation Manual for Model PU-2x (EM-9255), Section
A.
POINTS OF CAUTION
■POWER INPUT RATING & OPERATIONAL RANGE
• Locate the power input rating marked on the product and
confirm its operational range as indicated below:
24V DC rating: 24V ±10%, approx. 60mA
■GENERAL PRECAUTIONS
• Before you remove the unit or mount it, turn off the power
supply and input signal for safety.
■ENVIRONMENT
• Indoor use.
• When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
• Environmental temperature must be within -5 to +55°C
(23 to 131°F) with relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
■WIRING
• Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).
• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.
■AND ....
• The unit is designed to function as soon as power is sup-
plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.
COMPONENT IDENTIFICATION
Body
Specifications
Front Cover
(Connection diagram
behind)
■FRONT VIEW (with cover open)
1
78
56
2
34
Modular Jack
INSTALLATION
Use Standard Rack (model: 18BXx or 18KBXx).
SQUARE ROOT EXTRACTOR MODEL 18JN
EM-1845 Rev.6 P. 1 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
INSTRUCTION MANUAL

TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram behind the front cover.
■EXTERNAL DIMENSIONS unit: mm (inch)
110 (4.33 )
93 (3.66)
24 (.94)
7 (.28)
78 (3.07)32 (1.26)
8–M3.5
SCREW
7 (.28)
2–M3
SCREW
■CONNECTION DIAGRAM
+
–
OUTPUT 2
POWER
OUTPUT 1
OUTPUT 2
PU-2x
MODULAR JACK
+
–
INPUT
1
2
5
6
CONNECTOR
■TERMINAL ASSIGNMENTS
12
34
78
56
18JN
EM-1845 Rev.6 P. 2 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

WIRING INSTRUCTIONS
■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) Power input voltage: Check voltage supplied to the rack
(model: 18BXx or 18KBXx). For the DC power source, be
sure that the ripple level is within 10% p-p.
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, unless you need to match the signal to a receiving
instrument or conduct regular calibration.
Zero and span are adjusted with using the Programming
Unit (model: PU-2x).
Refer to the Operation Manual for Model PU-2x for expla-
nations how to use the programmer.
■WARNING ON USE OF THE PROGRAMMING UNIT
• Be sure to disconnect the Programming Unit before you
turn on/off power supply to the unit.
• The output signal is held when the Programming Unit is
connected. You need to disconnect when confirming cur-
rent output values.
■HOW TO CALIBRATE THE OUTPUT 1
Use a signal source and measuring instruments of sufficient
accuracy level. Turn the power supply on and warm up for
more than 10 minutes.
There is no need of adjusting the Output 2.
• Fine Output Calibration
Using the Programming Unit (ITEM 19, 20)
ITEM 19 is for Zero, and ITEM 20 is for Span.
1) Turn the unit into Program mode (ITEM 01).
2) Apply simulated 0% input. Increase/decrease values
(default: 0%) at ITEM 19 until the output signal is cali-
brated to actual 0%.
3) Apply simulated 100% input. Increase/decrease value
(default: 100%) at ITEM 20 until the output signal is cali-
brated to actual 100%.
4) Apply simulated 0% input again and check 0% output.
5) When 0% value is changed, repeat the above procedure
2) – 4).
The 0% value may be shifted when the output span is
greater than the input span (gain > 1).
18JN
EM-1845 Rev.6 P. 3 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

PROGRAMMABLE ITEMS
The following items can be monitored and programmed. For detailed explanations, please refer to the Operation Manual for
Model PU-2x (EM-9255), Section A.
[GROUP 01]
ITEM MDFY. DATA INPUT DISPLAY CONTENTS
01 S MAINTENANCE SWITCH (lock command)
0 MTSW: MON.MODE MONITOR mode: data monitoring only
1 MTSW: PRG.MODE PROGRAM mode: “P” marked data modifiable
02 P Alphabets & No. TG: XXXXXXXXXX Tag name entry (10 characters max.)
03
05
P
D
Number (%)
No input
OUTPER XXX.XX
INPPER XXX.XX
Output status monitor (%) & simulation output
Input status monitor (%)
10 P 41
42
Sq-1: Nodrop
Sq-2: Dropout
Square root output, without low-end cutout
Square root output, with low-end cutout
19 P Percentage FINZER Fine zero adjustment
Initial status shows actual bias (%). When data is entered, out-
put (%) is shown.
20 P Percentage FINSPN Fine span adjustment
Initial status shows actual gain (%). When data is entered, out-
put (%) is shown.
Modication Code
D: No modification (writing) possible. Used only for monitoring (reading).
S: Modifiable at any time.
P: Modifiable only when the MAINTENANCE SWITCH is in the “PRG” mode.
MAINTENANCE
Regular calibration procedure is explained below:
■CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 4%,
16%, 36%, 64% and 100% input signal. Check that the out-
put signal for the respective input signal shows 0%, 20%,
40%, 60%, 80% and 100% within accuracy described in the
data sheet. When the output is out of tolerance, recalibrate
the unit according to the “ADJUSTMENT PROCEDURE”
explained earlier.
LIGHTNING SURGE PROTECTION
We offer a series of lightning surge protector for protec-
tion against induced lightning surges. Please contact us to
choose appropriate models.
18JN
EM-1845 Rev.6 P. 4 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN