MEX-D-C/Q

更新时间:2024-10-29 23:17:05
品牌:MSYSTEM
描述:Final Control Elements

MEX-D-C/Q 概述

Final Control Elements

MEX-D-C/Q 数据手册

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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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