MEX-D-C/Q 概述
Final Control Elements
MEX-D-C/Q 数据手册
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PDF下载MODEL: MEX-D
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
(current feedback; built-in SSR)
/C02: Polyurethane coating
/C03: Rubber coating
Functions & Features
TERMINAL SCREW MATERIAL
/S01: Stainless steel
• Controlling an electric actuator powered with 100 V AC
• Feedback current 4 – 20 mA DC
• Builtin SSR directly drives an AC motor
• Timer for motor's overheat protection
• Re-transmitted output
GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel (standard) or stainless
steel
Typical Applications
• Single phase AC motor
• 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: -10 to +10 % (front)
Span adjustment: 90 to 110 % (front)
50
(1.97)
80
(3.15)
INPUT SPECIFICATIONS
■ Setpoint Signal: 4 – 20 mA DC; input resistor incorporated
Input resistance: 100 Ω
136
(5.35)
■ Feedback Current: 4 – 20 mA DC; input resistor
incorporated
mm (inch)
Input resistance: 20 Ω
MODEL: MEX–D–[1][2]
OUTPUT SPECIFICATIONS
■ Re-Transmitted Output: 4 – 20 mA DC
Load resistance: 750 Ω max.
ORDERING INFORMATION
• Code number: MEX-D-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. MEX-D-B/Q)
■ Control Output: SSR (zero-crossing);
60 – 280 V AC @ 0.1 – 1 A
Note 1: The incorporated SSR is not capable for driving 200
V AC motor.
• Specify the specification for option code /Q
(e.g. /C01/S01)
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.
[1] POWER INPUT
AC Power
B: 100 V AC
R < [Release Voltage] ÷ [[Leakage Current at OFF] –
[Release Current]]
C: 110 V AC
D: 115 V AC
Leakage current at OFF: Approx. 10 mA @ 240 V
• Output Operation (terminal No. in parentheses)
F: 120 V AC
G: 200 V AC
Deadband
0
H: 220 V AC
(2-3)ON to min.
–
(1-3)ON to max.
+
J: 240 V AC
Deviation
(Setpoint) – (Feedback)
[2] OPTIONS
blank: none
/Q: With options (specify the specification)
MEX-D SPECIFICATIONS
ES-4616 Rev.10 Page 1/3
http://www.m-system.co.jp/
MODEL: MEX-D
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
8
7
6
5
4
2–
4.5 (.18) dia.
MTG HOLE
25 (.98) deep
9
3
2
10 11
1
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-D SPECIFICATIONS
ES-4616 Rev.10 Page 2/3
http://www.m-system.co.jp/
MODEL: MEX-D
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
DEADBAND
ADJ.
max.
min.
1
2
SSR
Compa-
rator
Amplifier
+
–
+
M
5
6
4
SSR
SETPOINT
AC MOTOR
3
100Ω
RE-TRANSMITTED OUTPUT
Output
Driver
A
9
Voltage
Amplifier
+
–
10
11
TIMER
FEEDBACK
Timer
20Ω
Z
S
U
V
7
8
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.
Specifications are subject to change without notice.
MEX-D SPECIFICATIONS
ES-4616 Rev.10 Page 3/3
http://www.m-system.co.jp/
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