M-system MEXM Bedienungsanleitung

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:

Valve positioner (body + base socket).................................(1)

Terminating resistor (110 Ω, 0.25 W).................................(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, Instal-

lation Category II (transient voltage 2500V) and Meas-

urement Category II (control output, transient voltage

2500V). Reinforced insulation (Modbus or control out-

put or feedback resistance to power: 300V and Modbus

or feedback resistance to control output: 250V) is main-

tained. Prior to installation, check that the insulation

class of this unit satisﬁes the system requirements.

• The equipment must be mounted inside a suitable ﬁre

enclosure.

• Altitude up to 2000 meters.

• 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.

■POWER INPUT RATING & OPERATIONAL RANGE

• Locate the power input rating marked on the product and

conﬁrm its operational range as indicated below:

100 – 240V AC rating: 85 – 264V, 50/60 Hz,

approx, 1.5VA at 100V AC

approx, 4VA at 200V AC

approx, 6VA at 264V AC

100 – 240V DC rating: 85 – 264V, approx, 1W

■GENERAL PRECAUTIONS

• Before you remove the unit from its base socket or mount

it, turn off the power supply and power to a motor 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 +60°C

(23 to 140°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.

VALVE POSITIONER

(for Modbus; built-in SSR) MODEL MEXM

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-4610 Rev.1 P. 1 / 5

INSTRUCTION MANUAL

COMPONENT IDENTIFICATION

Body Base Socket

Connection Diagram

Front Cover

Specifications

■HOW TO OPEN THE FRONT COVER:

Position your ﬁnger on the hook at the top of the front cover

and pull.

The shape of base socket may be different

for some models.

■FRONT PANEL CONFIGURATIONS

Full-close position adj.

Modbus setting SW2

Modbus setting SW1

Manual open switch

Manual close switch

Full-open position adj.

Deadband

Modbus node address

Modbus transfer rate

Modbus LED

• Modbus LED

LED ON at power on, momently OFF with communication

signal. With switch setting error, two blinks in 1 sec. inter-

val are repeated.

Blinking pattern:

ON ON

1 sec.

• Modbus setting

Transfer rate:

Transfer rate is conﬁgurable via frontal rotary switch. Set

0 – 3; 4 – 9 are unused.

0: 38.4 kbps (factory setting)

1: 19.2 kbps

2: 9600 bps

3: 4800 bps

Node address:

Node address (decimal number) tens and units places are

conﬁgurable via frontal rotary switch. (1 – 99) (Factory set-

ting: 00)

Parity, stop bit and data length

Parity, stop bit and data length are conﬁgurable via frontal

Modbus SW1 and SW2.

Modbus setting Parity Stop bit Data

length

SW1 SW2

OFF OFF None 2 8

ON (*) OFF (*) Even 1 8

OFF ON Odd 1 8

ON ON Unused

(*) Factory setting

• Deadband adjustments

Select range from following table. (factory setting: 1.5%).

Deadband adj. SW Deadband (%)

0 0.1

1 0.3

2 0.5

3 0.7

4 1.0

5 1.5

6 2.0

7 3.0

8 5.0

9 8.0

• Full-open position adj.

Feedback potentiometer's 75 – 100% position is conﬁgur-

able with full-open position adjustment.

• Full-closed position adj.

Feedback potentiometer's 0 – 25% position is conﬁgurable

with full-closed position adjustment.

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. 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 DI-

MENSIONS.”

MEXM

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-4610 Rev.1 P. 2 / 5

TERMINAL CONNECTIONS

Connect the unit as in the diagram below or refer to the connection diagram on the top of the unit.

■EXTERNAL DIMENSIONS unit: mm (inch)

5678

1110

80 (3.15)

50 (1.97) 107 (4.21)

136 (5.35) [3.3 (.13)]

80 (3.15)

(.79)

40 (1.57)

50 (1.97)

7.8 (.31)

CLAMP

(top & bottom)

DIN RAIL

35mm wide

–

4.5 (.18) dia.

MTG HOLE

25 (.98) deep

–

M3.5

SCREW

• When mounting, no extra space is needed between units.

■CONNECTION DIAGRAM

−

CAPACITOR

MOTOR

Open

FEEDBACK

POTENTIOMETER

Open

U (+)

V (−)

POWER

HOST Modbus

SLD

Notice that when limit switches inserted in motor wiring the

making/breaking may cause stress on the SSRs.

Tx+/Rx−

Tx−/Rx+

COMMUNICATION CABLE CONNECTIONS

HOST PC

■HOST PC WIRING

SLD

MEXM

SLD

MEXM Terminator

Connect terminating resistor between DA and DB of both ends of the unit.

Connect the attached terminating resistor to the MEXM.

Master unit is connectable also at both ends or other points.

Tx+/Rx–

Terminator

Tx–/Rx+

Rx+

Rx–

MEXM

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-4610 Rev.1 P. 3 / 5

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) Feedback potentiometer: Check voltage across the termi-

nals 9 – 11 to show approx. 3.3V and 10 – 11 within 0 to

approx. 3.3V.

4) Output: Check voltage across the output terminals.

MANUAL OPERATION

Even when there is no input signal from Modbus, there is

the possibility to force the position to 0% or 100% using the

manual operation switches (OPEN COM and CLOSE COM)

in the panel accessible from the frontal side.

Manual operation switch has priority over the opening posi-

tion from Modbus, therefore, when the control is intended

to be from Modbus, be sure to turn off the manual operation

switch.

Also turning both (open and close) switches on, both will be

out of function.

ADJUSTMENTS

■FULL-CLOSE POSITION

Turn manual close switch on or apply 0% setpoint signal

and adjust the 0% position with full-close position adj. Ad-

justable within 0 to 25%. (factory setting: 0%)

■FULL-OPEN POSITION

Turn manual open switch on or apply 100% setpoint signal

and adjust the 100% position with full-open position adj.

Adjustable within 75 to 100%. (factory setting: 100%)

Check once more full-close position and conﬁrm there is no

deviation, if so, adjust repeatedly.

After adjustment, be sure to turn off manual switches.

■DEADBAND

Protect from hunting, adjusting deadband switch to the

most signiﬁcant value available.

It stops, immediately after a deviation goes into deadband

range and the control will be recovered when it is out of the

deadband range.

MEXM

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-4610 Rev.1 P. 4 / 5

MODBUS SETTINGS

■COMMANDS

The resistor allocation displayed on address map table , read to the next commands and writing is possible.

FUNCTION COMMAND FUNCTION

01 Read Coils Read Coil (0X)

02 Read Discrete Inputs Read Discrete Input (1X)

03 Read Holding Registers Read Holding Register (4X)

04 Read Input Registers Read Input Register (3X)

05 Write Single Coil Write on Coil (0X)

06 Write Single Register Write on Holding Register (4X)

15 Write Multiple Coils Write on Coil (0X) (multiple addresses)

16 Write Multiple Registers Write on Holding Register (4X) (multiple addresses)

It is recommended to wait for the response period beyond timeout value, 0.5 seconds, every time command is used.

When there is no response, perform error handling, such as a retry, appropriately.

■ADDRESS MAP

TYPE ADDRESS NAME FUNCTION

Coil (0X) 1 – 7 (reserved)

8 Start running 1: Drives motor to target position.

0: Stops motor (manual open/close swithces function is available)

9 (reserved)

10 Clear motor lock alarm Setting “1” to clear motor deadlock alarm.

Checks motor deadlock alarm turned “0” and sets “0” on that bit.

11 – 32 (reserved)

Discrete Input

(1X)

1 Motor closing output 0: OFF 1: ON “1” while closing

2 Motor opening output 0: OFF 1: ON “1” while opening

3 – 7 (reserved)

8 Motor deadlock alarm 0: Normal

1: Motor deadlock alarm at overload etc.

Operation is stopped while motor lock alarm

Stops alarm after checking the cause of the error using “motor lock

alarm stop.”

9 (reserved)

10 System error 0: Normal

1: Abnormalities on the system about DIP switch status etc.

11 – 32 (reserved)

Input Register

(3X)

1 Position output Actual position of the feedback potentiometer is displayed.

Signed: 0.01 % Unit: (e.g.: 100 = 1.00 %)

Holding Register

(4X)

1 Target position input Sets the intended position controlled motor from Modbus master.

Signed: 0.01 % Unit: (e.g.: 100 = 1.00 %)

Setting available range: -0.50 – +100.50 %

“(Reserved)” means address that is going to have an intended use in the future.

Value can be read or written at moment but when writing in a multiple addresses if straddling reservation address etc, to

write on the reserved address, it is recommended to write “0.”

“0” is read when there is no other assignation; it is not writable.

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.

MEXM

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-4610 Rev.1 P. 5 / 5

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