MG W5LCS User manual

EM-8508 Rev.3 P. 1 / 3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
INSTRUCTION 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, connection and
basic maintenance procedures.
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:
85 – 264V AC rating: 85 – 264V, 47 – 66 Hz,
approx. 4 – 6VA
24V DC rating: 24V ±10%, approx. 3W
11 – 27V DC rating: 11 – 27V, approx. 3W
110V DC rating: 85 – 150V, approx. 3W
■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 0 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
• Output 2
Span Adj.
Zero Adj.
• Output 1
Span Adj.
Zero Adj.
Body
Specifications
INSTALLATION
Set the unit so that its DIN rail adapter is at the bottom.
■MOUNTING THE UNIT ON A DIN RAIL
A)Hang the upper hook at the rear side of unit on the DIN
rail.
B)Push in the lower in keeping pressing the unit to the DIN
rail.
A
B
DIN Rail
■REMOVING THE UNIT
A)Push down the DIN rail adaptor using a minus screw-
driver.
B)Pull out the lower part of the unit.
C)Remove the upper part from the DIN rail.
C
A
B
Spring Loaded
DIN Rail Adaptor
STRAIN GAUGE TRANSMITTER MODEL W5LCS

W5LCS
EM-8508 Rev.3 P. 2 / 3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
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)
54321
1110
9876
94 (3.70)
45 (1.77) 41 (1.61) [3.3 (.13)]
• When mounting, no extra space is needed between units.
DIN RAIL
35mm wide
5–M3.5 SCREW
7.4 (.29)
6–M3 SCREW
6 (.24)
3 (.12)
■CONNECTION DIAGRAM
U(+)
V(–)
POWER
10
11
+
–
OUTPUT 1
6
7
+
–
8
9
OUTPUT 2
4
5
3
2
The section enclosed by broken line is only with
2nd output option.
DO NOT connect to the terminal 1.
+
+
STRAIN
GAUGE
–
–
WIRING INSTRUCTIONS
■M3 Screw (output, power input)
Torque: 0.8 N∙m
■M3.5 Screw (input)
Torque: 0.8 N∙m

W5LCS
EM-8508 Rev.3 P. 3 / 3
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
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
10 – 11 with a multimeter.
3) Strain gauge: Check the bridge resistance. The maxi-
mum current supplied to the strain gauge is 45 mA.
4) Input: With the maximum load applied, check that volt-
age across the terminals 4 (+) – 5 (–) equals [Exc. × Strain
Gauge Sensitivity].
5) 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.
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).
5) Go through the same procedure for the output 2.
Calibration for the output 1 affects the output 2. Check
the output 2 whenever the output 1 is adjusted.
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
We offer a series of lightning surge protector for protec-
tion against induced lightning surges. Please contact us to
choose appropriate models.