M-system KC User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-3561-CE P. 1 / 3
INSTRUCTION MANUAL
CT TRANSMITTER MODEL KC/KCE
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 + base socket + CT protector) ...................................(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
• This equipment is suitable for Pollution Degree 2 and
Installation Category II (transient voltage 2500V). Re-
inforced insulation (signal input or output to auxiliary
power input: 300V) and basic insulation (signal input to
output: 300V) are maintained. Prior to installation, check
that the insulation class of this unit satisfies the system
requirements.
• Altitude up to 2000 meters.
• The equipment must be mounted inside a panel.
• The equipment must be installed such that appropriate
clearance and creepage distances are maintained to con-
form to CE requirements. Failure to observe these re-
quirements may invalidate the CE conformance.
• 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.
■AUXILIARY POWER INPUT RATING & OPERATIONAL RANGE
• Locate the auxiliary power input rating marked on the
product and confirm its operational range as indicated
below:
AC power: Rating -15/+10%, 50/60 Hz, approx. 2VA
DC power: Rating ±10%, approx. 2W
■GENERAL PRECAUTIONS
• Before you remove the unit from its base socket or mount
it, turn off the power supply and input signal for safety.
■CT PROTECTOR
• Temperature of the CT Protector may rise if the signal
conditioner body is left unplugged from the base socket.
Be careful not to get burned when you need to touch it.
■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 -10 to +55°C
(14 to 131°F) with relative humidity within 30 to 85% 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
supplied, however, a warm up for 10 minutes is required
for satisfying complete performance described in the data
sheet.
COMPONENT IDENTIFICATION
CT Protector
K
-UNIT
Body Base Socket
Specifications
Zero Adj.
Span Adj.

KC / KCE
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-3561-CE P. 2 / 3
INSTALLATION
Detach the yellow clamps located at the top and bottom of
the unit for separate the body from the base socket.
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.
■DIN RAIL MOUNTING
Set the base socket so that its
DIN rail adaptor is at the bot-
tom. Hang 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.
■WALL MOUNTING
Refer to “EXTERNAL DI-
MENSIONS.”
TERMINAL CONNECTIONS
Connect the unit as in the diagram below or refer to the connection diagram on the front of the unit.
Attach the CT Protector together with input wiring to the input screw terminals.
■EXTERNAL DIMENSIONS unit: mm (inch)
3456
2187
80 (3.15)
50 (1.97) 103 (4.06)
123 (4.84) [3.3 (.13)]
80 (3.15)
20
(.79)
40 (1.57)
50 (1.97)
7.8 (.31)
CLAMP
(top & bottom)
DIN RAIL
35mm wide
2 – 4.5 (.18) dia.
MTG HOLE
15 (.59) deep
8
– M3.5
SCREW
• When mounting, no extra space is needed between units.
■CONNECTION DIAGRAM
+
–
OUTPUT
1
U(+)
V(–)
7
8
2
LOAD
SOURCE
k
l
CT
L
K
CT PROTECTOR
model: CTM
3
4
AUXILIARY POWER
■TERMINAL ASSIGNMENTS unit: mm (inch)
56
2187
34
CT PROTECTOR
(model: CTM)
20 (.79)

KC / KCE
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-3561-CE P. 3 / 3
CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Auxiliary power input voltage: Check voltage across the
terminal 7 – 8 with a multimeter.
3) Input: Check that the input signal is within 0 – 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 in-
put terminals.
Be sure that the input waveform is sinusoidal to obtain
proper accuracy for model KC.
4) Output: Check that the load resistance meets the de-
scribed specifications.
5) With 100% input, check that the voltage across the termi-
nal 3 – 4 shows 0.18V AC or less. If it exceeds 0.18V AC,
polish the transmitter’s base plug with a clean cloth.
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 suffi-
cient accuracy level. Turn the auxiliary 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).
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.