M-system LC2 Bedienungsanleitung
LC2 / LCS2
EM-1357P. 1 / 3
BEFORE USE ....
Thank you for choosing M-System. Before use, check the
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System's Sales Office or representatives.
■ PACKAGE INCLUDES:
Signal conditioner (body + base socket) ..................... (1)
■ MODEL NO.
Check that model No. described on the specification label is
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 RATINGS
• Check the power rating for the unit on the specification label.
AC power: Rating ±10%, 50/60 Hz, approx. 5VA
Rating 24V DC: 24V ±10%, approx. 150mA
■ UNPLUGGING THE UNIT
• Before you remove the unit from its base socket 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 ventila-
tion.
• 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 +60°C (23
to140°F)withrelativehumiditywithin 30 to 90% RHin order
to ensure adequate life span and operation.
■ WIRING
• Do not install cables (power supply, input and output) 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
supplied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data sheet.
COMPONENT IDENTIFICATION
■ HOW TO OPEN THE FRONT COVER:
Position your finger on the hook at the top of front cover and
pull.
INSTALLATION
Detach the yellow clamps located at the top and bottom of the
unit for separating the body from the base socket.
■ DIN RAIL MOUNTING
Set the base socket so that its
DIN rail adaptor is at the bottom.
Position the upper hook at the
rear side of base socket on the
DIN rail and push in the lower.
When removing the socket, push
down the DIN rail adaptor utiliz-
ing a minus screwdriver and pull.
■ WALL MOUNTING
Refer to the drawings in the fol-
lowing page.
Body Base Socket
Connection
Diagram Label
Front Cover
Specification
Label
LCD Meter
(optional)
INSTRUCTION MANUAL
MODEL LC2/LCS2
STRAIN GAUGE TRANSMITTER
(remote sensing)
Clamp
(top & bottom)
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
Shape and size of the base socket
are slightly different with various
socket types.
The shape of base socket may be different
for some models.
LC2 / LCS2
EM-1357P. 2 / 3
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram label on top of the unit.
■ DIMENSIONS mm (inch)
■CONNECTION DIAGRAM
5678
21
1110
80 (3.15)
50 (1.97) 107 (4.21)
136 (5.35) [3.3 (.13)]
80 (3.15)
20
(.79)
35.4 (1.39)
40 (1.57)
50 (1.97)
7.8 (.31)
CLAMP
(top & bottom)
DIN RAIL
35mm wide
2–4.5 (.18) dia.
MTG HOLE
25 (.98) deep
11–M3.5
SCREW
•When mounting, no extra space is needed between units.
39
4
7
8
2
1
INPUT
EXC.
REMOTE
SEMSING
+
–
OUTPUT
U(+)
V(–) POWER
+
–
10
3
9
11
6
+
–
STRAIN
GAUGE
4
5
+
–
S
S
Close across the terminal 3 – 4 and 5 – 9
when the remote sensing is not used.
LC2 / LCS2
EM-1357P. 3 / 3
CHECKING
1) Terminal wiring: Check that all cables are correctly
connected according to the connection diagram.
2) Power input voltage: Check voltage across terminals 7 –
8 with a multimeter.
3) Straingauge: Check the bridge resistance. The maximum
current supplied to the strain gauge is 65mA.
4) Input: When applying maximum load, check that voltage
across terminals 10 (+) – 11 (–) equals Exc. ×Strain Gauge
Sensitivity.
5) Output: Check that the load resistance meets the de-
scribed specifications.
ADJUSTMENT PROCEDURE
• LCD Meter
Indicates input in % (0 – 100%).
• Excitation Adj.
The excitation voltage is calibrated at the factory, therefore
will not usually require adjustment, except when used in
combination with a strain gauge of sensitivity other than
described on the specification label.
In that case, adjust to the value calculated by the equation
below:
Excitation [V] = 5 [V] ×a [mV/V]
b [mV/V]
where
a: Sensitivity described on the specification label
b: User's sensitivity value
Adjustable range is within 2V to 5V with the bridge resist-
ance 350Ω.
• Zero Adj. (Tare Adj.)
Max. 80% of input span can be adjusted.
Without any load, adjust the output to 0%.
• Span Adj. (Gain Adjustment)
Max. 100 –␣ 20% of input span can be adjusted.
With the full load, adjust the output to 100%.
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 signals. 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 above.
Span Adj.
Zero Adj.
Excitation Adj.
LCD Meter
M-SYSTEM WARRANTY
M-System warrants such new M-System product which it manufactures to be free from defects in materials and workmanship during the 36-month period following the date that such
productwasoriginallypurchasedifsuchproducthasbeenusedundernormaloperatingconditionsandproperlymaintained,M-System'ssoleliability,andpurchaser'sexclusiveremedies,
under this warranty are, at M-System's option, the repair, replacement or refund of the purchase price of any M-System product which is defective under the terms of this warranty. To
submit a claim under this warranty, the purchaser must return, at its expense, the defective M-System product to the below address together with a copy of its original sales invoice.
THIS IS THE ONLY WARRANTY APPLICABLE TO M-SYSTEM PRODUCT AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. M-SYSTEM SHALL HAVE NO LIABILITY FOR CONSEQUENTIAL, INCIDENTAL OR
SPECIAL DAMAGES OF ANY KIND WHATSOEVER.
M-System Co., Ltd., 5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN, Phone: (06) 6659-8201, Fax: (06) 6659-8510, E-mail: [email protected]
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