M-System M5 CT CT Transmitter Instruction manual

Below you will find brief information for CT Transmitter M5 CT. This document provides information on installing, connecting, and maintaining the M5 CT CT Transmitter. It highlights safety precautions and environmental considerations, including power input requirements, wiring specifications, and installation on a DIN rail. The document also covers calibration procedures and troubleshooting steps for optimal performance.

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M5CT
INSTRUCTION MANUAL
CT TRANSMITTER
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.......................................................... (1)
■ MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
MODEL
M5CT
■ 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
Body
Terminal Cover
Spec. Marking
Power LED
■ INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
Span Adj.
Zero Adj.
POINTS OF CAUTION
■ CONFORMITY WITH EC DIRECTIVES
•Insert a noise filter for the power source connected to the
unit. Densei-Lambda Noise Filter Model MZS-1206-33 or
equivalent is recommended.
•The actual installation environments such as panel configurations, connected devices, connected wires, may affect
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 conformity.
•Install lightning surge protectors for those wires connected to remote locations. For 24V DC power supply line,
choose a surge protector with its maximum surge voltage
40V or less between lines. Recommended M-System model: MDP-D24.
■ POWER INPUT RATING &amp; 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. 2 – 3VA
24V DC rating: 24V &plusmn;10%, approx. 2W
■ 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&deg;C
(23 to 131&deg;F) with relative humidity within 0 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 these cables together with those in which
noises are present. Do not install them in the same duct.
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.
DIN Rail
A
B
■ REMOVING THE UNIT
A)Push down the DIN rail adaptor using a minus screwdriver.
B)Pull out the lower part of the unit.
C)Remove the upper part from the DIN rail.
C
B
Spring Loaded
DIN Rail Adaptor
A
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M5CT
TERMINAL CONNECTIONS
CHECKING
Connect the unit as in the diagram below or refer to the connection diagram on the front of the unit.
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 5 – 120% of
the full-scale.
Be sure to short the secondary side of CT or turn off the
current at its primary side for preventing the CT from
burning when the cables are to be disconnected from input terminals.
4) Output: Check that the load resistance meets the described specifications.
■ EXTERNAL DIMENSIONS unit: mm (inch)
7.3 (.29)
8–M3.5 SCREW
1 2
DIN RAIL
35mm wide
94 (3.70)
35.4 (1.39)
3 4
5 6
3 (.12)
7 8
25 (.98)
41 (1.61)
[3.3 (.13)]
• When mounting, no extra space is needed between units.
■ CONNECTION DIAGRAM
SOURCE
K
k
CT
L
l
LOAD
(A)
(&plusmn;)
3
5 +
4
6 –
7 U(+)
8 V(–)
OUTPUT
POWER
ADJUSTMENT PROCEDURE
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.
■ 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%.
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 procedure 1) – 3).
MAINTENANCE
Regular calibration procedure is explained below:
■ CALIBRATION
Warm up the unit for at least 10 minutes. Apply 10%, 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.
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) 66598510, E-mail: [email protected]
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Key features

DIN rail mounting
Power input rating (85-264V AC or 24V DC)
Zero and span adjustment
Calibration procedures
Noise filter recommendation
Surge protection guidelines

Frequently asked questions

The M5 CT accepts either 85-264V AC or 24V DC. The specific rating is marked on the product and should be confirmed before operation.

The unit is designed for DIN rail mounting. Hang the upper hook on the rear side of the unit onto the DIN rail, then push in the lower part while pressing the unit against the rail.

Before removing or mounting the unit, always turn off the power supply and input signal for safety. Ensure cables (power, input, and output) are not installed close to noise sources or bound together with noisy cables. Install lightning surge protectors for wires connected to remote locations.