MG M6DCTC User manual

EM-7836 Rev.7 P. 1 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
INSTRUCTION MANUAL
CT TRANSMITTER
(clamp-on current sensor) MODEL M6DCTC
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
■CONFORMITY WITH EU DIRECTIVES
• The equipment must be mounted inside a panel.
• Use the current sensor with the CLSE-x/CE.
• The actual installation environments such as panel con-
figurations, connected devices, connected wires, may af-
fect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure the CE conform-
ity.
• Install lightning surge protectors for those wires connect-
ed to remote locations.
■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. 0.5W
■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 -20 to +55°C
(-4 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
Front Cover
DIN Rail Adaptor
Specifications
■FRONT VIEW (with the cover open)
Zero Adj.
Power LED
Span Adj.

M6DCTC
EM-7836 Rev.7 P. 2 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
INSTALLATION
Set the unit so that its DIN rail adapter is at the bottom. When the unit is installed to an Installation Base (model M6DBS),
refer to its instruction manual.
■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.
DIN Rail
AB
■REMOVING THE UNIT
A)Pull down the DIN rail adaptor using a minus screwdriv-
er.
B)Pull out the lower part of the unit.
C)Remove the upper part from the DIN rail.
DIN Rail Adaptor A
B
C
■CLAMP-ON CURRENT SENSOR
• The current sensor is to be ordered separately.
• Over-voltage clamp element in case of an open circuit is
incorporated for safety.
• Fix the sensor module at the input cable with a binding
strap.
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the side of the unit.
■EXTERNAL DIMENSIONS unit: mm (inch)
94 (3.70)
5.9 (.23)
DIN RAIL HOOK
102 (4.02)
[0.5 (.02)]
8–M3
EURO TERMINAL
DIN RAIL
35mm wide
5678
1234
• When mounting, no extra space is needed between units.
WIRE INSERTION ANGLE: approx. 7°
SCREWDRIVER
INSERTION ANGLE
: approx. 40°

M6DCTC
EM-7836 Rev.7 P. 3 / 4
MG CO., LTD. www.mgco.jp
5-2-55 Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
■CONNECTION DIAGRAM
+
–
+
–
OUTPUT
5
6
7
8
1
2
POWER
LOAD
SOURCE
CONNECTOR
POWER
k
l
CLAMP-ON SENSOR
■WIRING INSTRUCTIONS
• Applicable wire size
Solid: 0.2 to 2.5 mm2(0.55 to 1.75 dia.)
Stranded: 0.2 to 2.5 mm2(Tinning wire ends may
cause contact failure and therefore is not
recommended.)
Ferruled: 0.2 to 1.5 mm2(0.55 to 1.35 dia.)
• Expose wire conductors by 8 mm (0.31”).
8 mm 8 mm
3.7 mm dia. max. 3.7 mm dia. max.
Wire exposure Recommended
ferruled wire
• How to Connect Wires
Screwdriver
Wire
Insert a wire. Confirm that the wire tip hits the bottom and
tighten the screw with a screwdriver.
Confirm that the wire’s insulation tube is not caught in the
terminal. (Torque: 0.3 N·m)
Screwdriver
Wire
8 mm
6 mm

M6DCTC
EM-7836 Rev.7 P. 4 / 4
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
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 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 10% input and adjust output to 10%.
For a bidirectional output (e.g. -5 – +5 V DC), apply an
input signal corresponding to 0 V DC output. (Same pro-
cedure in (3))
2) SPAN: Apply 100% input and adjust output to 100%.
3) Check ZERO adjustment again with 10% input.
4) When ZERO value is changed, repeat the above proce-
dure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■CALIBRATION
Warm up the unit for at least 10 minutes. Apply 5%, 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.