KWLD CURRENT LOOP SUPPLY COMPONENT IDENTIFICATION BEFORE USE ....

KWLD CURRENT LOOP SUPPLY COMPONENT IDENTIFICATION BEFORE USE ....
KWLD
INSTRUCTION MANUAL
CURRENT LOOP SUPPLY
BEFORE USE ....
Thank you for choosing M-System. Before use, please 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)
KWLD
MODEL
(for level transmitter use)
COMPONENT IDENTIFICATION
Body
Base Socket
Specification
Label
K•UNIT
■ 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.
■ FRONT PANEL CONFIGURATION
Loop Test SW
Coarse Span Adj.
Rotary SW
POINTS OF CAUTION
■ POWER INPUT RATING & OPERATIONAL RANGE
• Check the power rating for the unit on the specification label.
AC Rating: Rating ±10%, 50/60 Hz ±2 Hz, approx. 3.5VA
DC Rating: Rating ±10%, approx. 3W
Span Adj.
■ 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.
Zero Adj.
■ 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 (power supply, input and output) close
to noise sources (relay drive cable, high frequency line, etc.).
• Do not bind the unit's cables together with cables where
high noise levels are present. Do not install them in the same
duct.
■ AND ....
• When the startup current for the level transmitter is high,
the KWLD may not start. In such a case, maintain the power
supply and turn the Loop Test SW off once and on again.
• 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.
Zero Adj.
Output 2
Span Adj.
INSTALLATION
Detach the yellow clamps located at the top and bottom of the
unit i order to separate 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 utilizing a minus
screwdriver and pull.
Clamp
(top & bottom)
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
■ WALL MOUNTING
Refer to the drawings in the Shape and size of the base socket
“TERMINAL CONNECTION” are slightly different with various
socket types.
section.
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EM-3597
KWLD
TERMINAL CONNECTIONS
ADJUSTMENT PROCEDURE
Connect the unit as in the diagram below or refer to the
connection diagram label on the front of the unit.
This unit is calibrated at the factory to meet the ordered
specifications, therefore you usually do not need any calibration.
For matching the signal to a receiving instrument or in case
of regular calibration, adjust the output as explained in the
following.
+ 5
1 +
– 6
2 –
+ 4
10 +
OUTPUT 1
INPUT
2-WIRE XMTR
PWR SUPPLY
OUTPUT 2
11 –
7 U(+)
POWER
8 V(–)
■When Used as DC Supply
2-WIRE
TRANSMITTER
–
■When Used as Isolator
+ 5
+ 5
250Ω
+
INPUT
250Ω
– 6
– 6
+ 4
+ 4
■ 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) Apply 0% input and adjust the output 1 to 0% with ZERO
Adj., and then the output 2 with OUT 2 ZERO Adj.
2) Apply 100% input and adjust the output 1 to 100% using
COARSE SPAN Adj. and SPAN Adj., and then the output
2 with OUT 2 SPAN Adj.
3) Check ZERO adjustment again with 0% input.
4) When ZERO value is changed, repeat the above procedure
1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
CHECKING
1) Terminal wiring: Check that all cables are correctly
connected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal 7
– 8 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
4) Output: Check that the load resistance meets the described specifications.
When using a signal generator to simulate the input signal,
the supply output may be turned off with the Loop Test SW.
CLAMP
(top & bottom)
mm (inch)
7.8 (.31)
20
(.79)
EXTERNAL DIMENSIONS
■ 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 accuracy described in the data sheet. When the output is out of
tolerance, recalibrate the unit according to the "ADJUSTMENT PROCEDURE" explained earlier.
DIN RAIL
35mm wide
8
7
6
5
2–4.5 (.18) dia.
MTG HOLE
25 (.98) deep
11–M3.5
SCREW
50 (1.97)
9
3
10 11
1
2
40 (1.57)
103 (4.06)
132 (5.20)
80 (3.15)
80 (3.15)
35.4 (1.39)
4
[3.3 (.13)]
50 (1.97)
•When mounting, no extra space is needed between units.
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
product was originally purchased if such product has been used under normal operating conditions and properly maintained, M-System's sole liability, and purchaser's exclusive remedies,
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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EM-3597
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