M-system Mini-M M2DU Bedienungsanleitung

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-5028 Rev.6 P. 1 / 2

INSTRUCTION MANUAL

Mini-M™

CURRENT LOOP SUPPLY

(10 – 50 mA loop) MODEL M2DU

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)

■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. 5VA

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.

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.”

M2DU

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-5028 Rev.6 P. 2 / 2

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)

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.

14 13

4 (.16)

■CONNECTION DIAGRAM

–

MONITOR

(10 – 50mA DC)

–

OUTPUT

U(+)

V(–)

POWER

2-WIRE

TRANSMITTER

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.

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