M-system 18KTS User manual

THERMOCOUPLE CONVERTER MODEL 18KTS
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
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 + CJC sensor).............................(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:
24V DC rating: 24V ±10%,
approx. 35mA with voltage output
approx. 65mA with current output
■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
CJC Sensor
Body
Specifications
Front Cover
(Connection diagram
behind)
■FRONT VIEW (with cover open)
Span Adj.
Zero Adj.
1
78
56
2
34
INSTALLATION
Use Standard Rack (model: 18KBXx).
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-0412 Rev.1 P. 1 / 3
INSTRUCTION MANUAL

TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram behind the front cover.
Attach the CJC sensor together with input wiring to the input terminals. The CJC sensor is not interchangeable. Check that
its serial number is identical to that of the unit.
■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
5
6
Note 1: Use either of module or external field terminals.
Note 2: For OUTPUT 2 with current output, use either of terminals on the
front or connector on the rear.
OUTPUT 2
OUTPUT 1
POWER
−
−
External
Field Terminals
(Section A)
Section A. Field Terminals
3
+
–
red
black
1
2
+
−
4
CJC
SENSOR
comp. leadwire
T / C
model: CJM
CONNECTOR
+
OUTPUT 2
Module
Field Terminals
(Section A)
4
1
2
3
■TERMINAL ASSIGNMENTS
5
87
6
12
34
CJC SENSOR (model: CJM)
rb
18KTS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-0412 Rev.1 P. 2 / 3

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: 18KBXx). For the DC power source, be sure that
the ripple level is within 10% p-p.
3) Input: Check that the input voltage is within 0 – 100% of
full-scale.
If the thermocouple or its extension wires are broken, the
output goes over 100% (below 0% with downscale) due to
burnout function. Check leadwires in such a case.
4) Output: Check that the load resistance meets the de-
scribed specifications shown below.
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 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.
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) No need of adjustments for the Output 2.
Note: The factory calibration is performed with the input
signals from external field terminals. Recalibration is
needed when you use module field terminals.
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.
18KTS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-0412 Rev.1 P. 3 / 3