M-system Mini-M M2CEC User manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5052 Rev.4 P. 1 / 4
INSTRUCTION MANUAL
Mini-M™
AC CURRENT TRANSMITTER
(clamp-on current sensor) MODEL M2CEC
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).............................(1)
Sensor ..................................................................................(1)
Cable (CLSA-08, -12 only) ..................................................(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:
85 – 264V AC rating: 85 – 264V, 47 – 66 Hz, approx. 3 – 5VA
24V DC rating: 24V ±10%, approx. 3W
11 – 27V DC rating: 11 – 27V, approx. 3W
110V DC rating: 85 – 150V, approx. 3W
■GENERAL PRECAUTIONS
• Before you remove the unit from its base socket 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.
• Be sure that the ventilation slits are not covered with ca-
bles, etc.
■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.
• With voltage output, do not leave the output terminals
shortcircuited for a long time. The unit is designed to
endure it without breakdown, however, it may shorten ap-
propriate life duration.
COMPONENT IDENTIFICATION
Model
SPAN
ZERO
Zero Adj.
Span Adj.
Body Base Socket
Connection
Diagram
Specifications
Fixing Screw
INSTALLATION
Loosen the fixing screw at the front of the unit in order to
separate the body from the base socket.
DIN Rail
35mm wide
Spring Loaded
DIN Rail Adaptor
■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.
■WALL MOUNTING
Refer to “EXTERNAL DIMENSIONS.”
■CLAMP-ON CURRENT SENSOR
Secure the sensor to the cable e.g. using tie wraps.
Over-voltage clamp element is incorporated for safety in
open circuit.

M2CEC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5052 Rev.4 P. 2 / 4
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)
5
9
21.5 (.85)
70.5 (2.78)
84 (3.31)10 (.39) 15 (.59)
6 (.23)
59 (2.32)
DIN RAIL
35mm wide
[4 (.16)]
8–M3
SCREW
72 (2.83)
23 (.91)
2–4.2x5
(.17x.20)
MTG HOLE
6 (.24) deep
114 (4.49)
• When mounting, no extra space is needed between units.
4
8
12
14 13
1
4 (.16)
■CONNECTION DIAGRAM
+
–
OUTPUT
9
12
1
4
LOAD
SOURCE
CONNECTOR*
k
l
CLAMP-ON SENSOR
U(+)
V(–)
13
14
POWER
*Connector provided only for the CLSA-08 and CLSA-12.
WIRING INSTRUCTIONS
■SCREW TERMINAL
Torque: 0.8 N·m
■SOLDERLESS TERMINAL
Refer to the drawing below for recommended ring tongue
terminal size. Spade tongue type is also applicable.
Applicable wire size: 0.25 to 1.65 mm2(AWG 22 to 16)
Recommended manufacturer: Japan Solderless Terminal
MFG.Co.Ltd, Nichifu Co.,ltd
6 (.24) max
3.3 (.13) max
mm (inch)
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
13 – 14 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 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.

M2CEC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5052 Rev.4 P. 3 / 4
CLAMP-ON CURRENT SENSOR
The clamp-on current sensor is included in the product package.
■CLAMP-ON CURRENT SENSOR (leadwire type CLSA)
• 0 – 10A through 0 – 75A Use
Sensor model No.: CLSA-08
Sensor cable model No.: CLSA-08C-30
Applicable cable diameter: Max. 10.0
Sensor leadwire: AWG 22
Weight: 45 g (1.6 oz)
LK
10 (.39)
dia.
41 (1.61)
23 (.91)
27 (1.05)26 (1.02)
150 (5.91) 3000 (118)
l
k
• 0 – 100A Use
Sensor model No.: CLSA-12
Sensor cable model No.: CLSA-08C-30
Applicable cable diameter: Max. 16.0
Sensor leadwire: AWG 22
Weight: 70 g (2.5 oz)
16 (.63)
dia.
44.5 (1.75)
29 (1.14)
30 (1.18)
31 (1.22)
150 (5.91)
l
k
LK
3000 (118)
• 0 – 125A through 0 – 300A Use
Sensor model No.: CLSA-30
Applicable cable diameter: Max. 24.0
Sensor leadwire: AWG 18, 200 mm
Weight: 200 g (7.1 oz)
24 (.94)
dia.
64 (2.52)
47.5 (1.87)
40 (1.57)34 (1.34)
200 (7.87)
4
(.16)
4
(.16)
l
k
KL
• 0 – 350A through 0 – 500A Use
Sensor model No.: CLSA-50
Applicable cable diameter: Max. 36.0
Sensor leadwire: AWG 18, 200 mm
Weight: 300 g (10.6 oz)
36 (1.41)
dia.
80 (3.15)
59.5 (2.34)
50 (1.97)38 (1.50) 4
(.16)
4
(.16)
200 (7.87)
l
k
KL
■CLAMP-ON CURRENT SENSOR (screw terminal type CLSB)
Connection: M3 screw terminal (torque 0.5 N·m)
Screw terminal: Nickel-plated steel
Output wiring: Use AWG 22 or thicker wires for the output.
Twist the paired wires, extendable up to 30 meters.
• 0 – 10A through 0 – 50A Use
Sensor model No.: CLSB-05
Applicable cable diameter: Max. 10.0
Weight: 45 g (1.6 oz)
k
k
l
l
28.9 (1.14)
26.3 (1.04)8.6
(.34)
8.6
(.34)
48 (1.89)
10 dia. (.39)
2–M3 SCREW
TERMINAL COVER
(detachable)
KL
• 0 – 60A through 0 – 100A Use
Sensor model No.: CLSB-10
Applicable cable diameter: Max. 16.0
Weight: 80 g (2.8 oz)
37.4 (1.47)
30.5 (1.20)7.5
(.30)
7.5
(.30)
53.7 (2.11)
16 dia. (.63)
2–M3 SCREW
k
k
l
l
TERMINAL COVER
(detachable)
KL
• 0 – 125A through 0 – 200A Use
Sensor model No.: CLSB-20
Applicable cable diameter: Max. 24.0
Weight: 200 g (7.1 oz)
k
k
l
l
2–M3 SCREW
55.9 (2.20)
35.9
(1.41)
8.3
(.33)
8.3
(.33)
75.7 (2.98)
24 dia. (.94)
TERMINAL COVER
(detachable)
KL

M2CEC
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-5052 Rev.4 P. 4 / 4
• 0 – 225A through 0 – 400A Use
Sensor model No.: CLSB-40
Applicable cable diameter: Max. 35.0
Weight: 300 g (10.6 oz)
35 dia. (1.38)
k
k
l
l
2–M3 SCREW
KL
73.5 (2.89)
35.5
(1.40)
8.8
(.35)
8.8
(.35)
93 (3.66)
TERMINAL COVER
(detachable)
• 0 – 500A through 0 – 600A Use
Sensor model No.: CLSB-60
Applicable cable diameter: Max. 35.0
Weight: 360 g (12.7 oz)
73.5 (2.89)
35.5
(1.40)
8.8
(.35)
8.8
(.35)
93 (3.66)
TERMINAL COVER
(detachable)
35 dia. (1.38)
k
k
l
l
2–M3 SCREW
KL
Note 1: The output values may vary depending on the accuracy
of engagement at the clamp connection.
Note 2: The sensor is detachable up to 100 times (approx.).
Note 3: The sensor’s mechanical construction may cause it to
generate resonance sound. However, it does not affect
the performance of the sensor.