MODEL: MEX-C

MEX-C SPECIFICATIONS

ES-4615 Rev.9 Page 1/3

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

Final Control Elements

VALVE POSITIONER

(potentiometer feedback; external SSR drive)

Functions & Features

• Controlling an electric actuator powered with 100/ 200 V

AC

• Feedback potentiometer 100 Ω – 10 kΩ

• Constant current output for driving external SSRs

• Timer for motor's overheat protection

• Re-transmitted output

Typical Applications

• Three phase AC motor

• Loop powered isolator can be used for isolating between

setpoint input signal and transmitter output signal

50

(1.97)

136

(5.35)

80

(3.15)

mm (inch)

MODEL: MEX–C–[1][2]

ORDERING INFORMATION

• Code number: MEX-C-[1][2]

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

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

• Specify the specification for option code /Q

(e.g. /C01/S01)

[1] POWER INPUT

AC Power

B: 100 V AC

C: 110 V AC

D: 115 V AC

F: 120 V AC

G: 200 V AC

H: 220 V AC

J: 240 V AC

[2] OPTIONS

blank: none

/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

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

/C01: Silicone coating

/C02: Polyurethane coating

/C03: Rubber coating

TERMINAL SCREW MATERIAL

/S01: Stainless steel

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M3.5 screw terminals

Screw terminal: Chromated steel (standard) or stainless

steel

Housing material: Flame-resistant resin (black)

Deadband adjustment: 2 – 20 % (front)

Timer adjustment: 1 – 30 sec. (front)

Isolation: Input or xmtr output or output to power

Zero adjustment: 0 – 25 % (front)

Span adjustment: 75 – 100 % (front)

INPUT SPECIFICATIONS

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

Input resistance: 100 Ω

■ Feedback Potentiometer: 100 Ω – 10 kΩ

Minimum span: 50 % of total resistance

Excitation: 0.5 V DC

OUTPUT SPECIFICATIONS

■ Re-Transmitted Output: 4 – 20 mA DC

Load resistance: 750 Ω max.

■ Control Output: 10 V DC @ 10 mA for ON;

0 mA for OFF

(2-3)ON to min.

(1-3)ON to max.

Deviation

(Setpoint) – (Feedback)

+

–

0

Deadband

• Output Operation (terminal No. in parentheses)

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)