MEX-B-C/Q [MSYSTEM]

Final Control Elements;


型号：	MEX-B-C/Q
厂家：	M-SYSTEM
描述：	Final Control Elements
文件：	总3页 (文件大小：111K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MODEL: MEX-B

Final Control Elements

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

VALVE POSITIONER

(potentiometert feedback; built-in SSR)

/C02: Polyurethane coating

/C03: Rubber coating

Functions & Features

Optional Process

• Controlling an electric actuator powered with 100 V AC

• Feedback potentiometer 100 Ω – 10 kΩ

• Built-in SSR directly drives an AC motor

• Timer for motor's overheat protection

• Re-transmitted output

/BD: Bonding

TERMINAL SCREW MATERIAL

/S01: Stainless steel

GENERAL SPECIFICATIONS

Construction: Plug-in

Typical Applications

• Single phase AC motor

Connection: M3.5 screw terminals

Screw terminal: Chromated steel (standard) or stainless

steel

• Loop powered isolator can be used for isolating between

setpoint input signal and transmitter output signal

Housing material: Flame-resistant resin (black)

Deadband adjustment: 2 – 20 % (front)

Timer adjustment: 1 – 30 sec. (front)

Isolation: Input or xmtr output to output to power

Zero adjustment: 0 – 25 % (front)

Span adjustment: 75 – 100 % (front)

(1.97)

(3.15)

INPUT SPECIFICATIONS

■ Setpont Signal: 4 – 20 mA DC; input resistor incorporated

Input resistance: 100 Ω

136

(5.35)

mm (inch)

■ Feedback Potentiometer: 100 Ω – 10 kΩ

Minimum span: 50 % of total resistance

Excitation: 0.5 V DC

MODEL: MEX–B–[1][2]

ORDERING INFORMATION

• Code number: MEX-B-[1][2]

OUTPUT SPECIFICATIONS

■ Re-Transmitted Output: 4 – 20 mA DC

Load resistance: 750 Ω max.

Specify a code from below for each of [1] and [2].

(e.g. MEX-B-B/Q)

■ Control Output: SSR (zero-crossing);

60 – 280 V AC @ 0.1 – 1 A

• Specify the specification for option code /Q

(e.g. /C01/BD/S01)

Note 1: The incorporated SSR is not capable for driving 200

V AC motor.

[1] POWER INPUT

AC Power

Note 2: When driving relays with this control output, relays

may operate erratically due to the leakage current at OFF of

SSR. To avoid the problem, install a resistor (R) in parallel

with the relay coil.

B: 100 V AC

C: 110 V AC

D: 115 V AC

R < [Release Voltage] ÷ [[Leakage Current at OFF] –

[Release Current]]

F: 120 V AC

G: 200 V AC

Leakage current at OFF: Approx. 10 mA @ 240 V

• Output Operation (terminal No. in parentheses)

H: 220 V AC

J: 240 V AC

Deadband

(2-3)ON to min.

–

(1-3)ON to max.

[2] OPTIONS

Deviation

blank: none

(Setpoint) – (Feedback)

/Q: With options (specify the specification)

MEX-B SPECIFICATIONS

ES-4614 Rev.10 Page 1/3

http://www.m-system.co.jp/

MODEL: MEX-B

INSTALLATION

Power input

•AC: Operational voltage range: rating ±10 %,

50/60 ±2 Hz, approx. 3 VA

Operating temperature: -5 to +60°C (23 to 140°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 300 g (0.66 lb)

PERFORMANCE in percentage of span

Position conversion accuracy: ±0.5 %

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 1000 V AC @ 1 minute

(input or xmtr output to output to power)

2000 V AC @ 1 minute (input or xmtr output or output or

power to ground)

EXTERNAL VIEW

Timer Adj.

Deadband Adj.

Zero Adj.

Span Adj.

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

CLAMP

(top & bottom)

7.8 (.31)

DIN RAIL

35mm wide

2–

4.5 (.18) dia.

MTG HOLE

25 (.98) deep

10 11

–M3.5

SCREW

50 (1.97)

107 (4.21)

136 (5.35)

40 (1.57)

50 (1.97)

[3.3 (.13)]

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

MEX-B SPECIFICATIONS

ES-4614 Rev.10 Page 2/3

http://www.m-system.co.jp/

MODEL: MEX-B

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

DEADBAND

ADJ.

max.

min.

SSR

Compa-

rator

Amplifier

–

SSR

SETPOINT

AC MOTOR

100Ω

RE-TRANSMITTED OUTPUT

max.

Output

Driver

Ref. Volt.

Generator

–

FEEDBACK

POT

TIMER

Voltage

Amplifier

Timer

min.

POWER

Base Socket

EXPLANATIONS OF TERMS

• SSR (Solid State Relay)

Composed only of semiconductor parts, SSR is free from arc discharge or chattering which is typical with electromagnetic

relays. It features excellent characteristics against vibration, physical impact or other environmental conditions.

• Zero-Cross Function

SSR with zero-cross function turns on when AC power voltage is near zero, creating delay of switching when input is provided in

the middle of an wave cycle, thus limiting transient switching noise voltage and rush current.

• Bonding

An silicone adhesive reinforces the part, which is sensitive to vibration, on PWB. The improvement of vibration performance is

not assured.

Specifications are subject to change without notice.

MEX-B SPECIFICATIONS

ES-4614 Rev.10 Page 3/3

http://www.m-system.co.jp/

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