MEX-F-02231-B/Q

更新时间:2024-10-29 22:40:08
品牌:MSYSTEM
描述:Final Control Elements

MEX-F-02231-B/Q 概述

Final Control Elements

MEX-F-02231-B/Q 数据手册

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MODEL: MEX-F  
Final Control Elements  
[3] POSITION FEEDBACK INPUT  
1: Potentiometer  
2: Current  
VALVE POSITIONER  
Functions & Features  
• I/I positioner for proportional valve position control in  
combination with electric actuator (100 V AC)  
• Driving directly AC motor by solid state relay output  
• Potentiometer or current feedback selectable  
• Timer preventing frequent ON-OFF operation, protecting  
motor from overheating  
[4] CONTROL OUTPUT  
1: SSRs incorporated  
2: Constant current driving external SSRs  
3: 24 V AC dry contact  
RE-TRANSMITTED OUTPUT  
1: 4 – 20 mA DC  
• Retransmitted output standard  
Typical Applications  
[5] POWER INPUT  
AC Power  
• Single phase AC motor  
• Loop powered isolator can be used for isolating between  
setpoint input signal and transmitter output signal  
B: 100 V AC  
C: 110 V AC  
D: 115 V AC  
F: 120 V AC  
50  
(1.97)  
G: 200 V AC  
H: 220 V AC  
J: 240 V AC  
80  
(3.15)  
DC Power  
R: 24 V DC  
136  
(5.35)  
mm (inch)  
[6] OPTIONS (multiple selections)  
Brake Function  
blank: Without  
MODEL: MEX–F–[1][2][3][4]1–[5][6]  
/B: With (incorporated SSRs control output type only)  
Signal Indicator  
ORDERING INFORMATION  
• Code number: MEX–F–[1][2][3][4]1–[5][6]  
Specify a code from below for each of [1] through [6].  
(e.g. MEX-F-11111-B/B/Q)  
blank: Without  
/E: Front-mounted LCD meter  
(with operation mode selector type only)  
Other Options  
• Specify the specification for option code /Q  
(e.g. /C01/S01/SET)  
blank: none  
/Q: Option other than the above (specify the specification)  
[1] OPERATION MODE SELECTOR  
1: With  
SPECIFICATIONS OF OPTION: Q (multiple selections)  
COATING (For the detail, refer to M-System's web site.)  
/C01: Silicone coating  
0: Without  
/C02: Polyurethane coating  
/C03: Rubber coating  
[2] POSITION SETPOINT INPUT  
1: 4 – 20 mA DC (Input resistance 100 Ω)  
2: 1 – 5 V DC (Input resistance 200 kΩ min.)  
3: 4 – 12 mA DC (Input resistance 100 Ω)  
4: 12 – 20 mA DC (Input resistance 100 Ω)  
For switching direct/reverse actions with split ranges, select  
"With" for Operation Mode Selector.  
TERMINAL SCREW MATERIAL  
/S01: Stainless steel  
EX-FACTORY SETTING  
/SET: Preset according to the Ordering Information Sheet  
(No. ESU-4623)  
MEX-F SPECIFICATIONS  
ES-4623 Rev.7 Page 1/5  
http://www.m-system.co.jp/  
MODEL: MEX-F  
SSR. To avoid the problem, install a resistor (R) in parallel  
with the relay coil.  
GENERAL SPECIFICATIONS  
Construction: Plug-in  
R < [Release Voltage] / ([Leakage Current at OFF] –  
[Release Current])  
Connection: M3.5 screw terminals  
Screw terminal: Chromated steel (standard) or stainless  
steel  
Output Operation: Refer to the figure at the end of this  
section.  
Housing material: Flame-resistant resin (black)  
Deadband adjustment: 2 – 20 % (front)  
Timer adjustment: 1 – 30 sec. (front); 5 sec. minimum with  
breaking function  
Constant Current  
Rating: 10 V DC, 10 mA ±10 % at ON;  
0 mA at OFF  
Output Operation: Refer to the figure at the end of this  
section.  
Isolation: Setpoint input or xmtr output or feedback input to  
control output to power (For external SSRs control output,  
non-isolated between control output and setpoint input etc.)  
Zero adjustment (front)  
24 V AC Dry Contact  
Drive: Photo MOSFET relay  
Rating: 27 V AC/DC @ 1 A  
Potentiometer feedback: 0 – 25 %  
Leakage current at OFF: 1 mA @ 30 V AC  
Output Operation: Refer to the figure at the end of this  
Current feedback: -10 – +10 %  
Span adjustment (front)  
section  
Output Operation (terminal No. in parentheses)  
Potentiometer feedback: 75 – 100 %  
Current feedback: 90 – 110 %  
Deadband  
0
Operation mode: Front-accessed DIP switches; failsafe  
operation (full-open, full-closed or stop) when there is no  
position input signal (approx. -12.5 %); direct/reverse re-  
transmitted output; direct/reverse control action  
Electronic limit: Front-accessed potentiometers provided for  
Operation Mode Selector type  
(2-3)ON to min.  
(1-3)ON to max.  
+
Deviation  
(Setpoint) – (Feedback)  
INSTALLATION  
• Zero limit: Approx. -10 – +5 %  
Power input  
• Span limit: Approx. 95 – 110 %  
AC: Operational voltage range: rating ±10 %,  
50/60 ±2 Hz, approx. 3 VA  
Breaking function: Dynamic brake (applicable with 100 to  
120 V AC motor only)  
DC: Operational voltage range: 24 V ±10 %, approx. 120  
mA (ripple 10 %p-p max.)  
LCD meter: Indicating re-transmitted output signal; 0.1 %  
increments  
Operating temperature: -5 to +60°C (23 to 140°F)  
Operating humidity: 30 to 90 %RH (non-condensing)  
Mounting: Surface or DIN rail  
INPUT SPECIFICATIONS  
Setpoint Input  
Weight: 300 g (0.66 lb)  
Input resistor: Attached to input terminals (0.5 W)  
POSITION FEEDBACK INPUT  
• Current: 4 – 20 mA DC  
PERFORMANCE in percentage of span  
Position conversion accuracy: ±0.5 %  
Input resistance: 20 Ω  
Re-transmitted output accuracy: ≤ 3 % excluding offset and  
deadband  
Feedback Potentiometer: 100 Ω – 10 kΩ  
Minimum span: 50 % of total resistance  
Excitation: 0.4 V DC  
Insulation resistance: ≥ 100 MΩ with 500 V DC  
Dielectric strength: 2000 V AC @ 1 minute (setpoint input or  
xmtr output or feedback input to control output to power to  
ground)  
OUTPUT SPECIFICATIONS  
Re-Transmitted Output: 4 – 20 mA DC  
Load resistance: 750 Ω max.  
(For external SSRs control output, non-isolated between  
control output and setpoint input etc.)  
Control Output  
SSR: Zero-cross fucntion; 80 – 264 V AC @ 0.1 – 1 A  
The built-in SSR cannot drive 200 V AC motor  
(direct/reverse).  
Leakage current at OFF: Approx. 10 mA @ 240 V  
Remark: When driving relays with this control output, relays  
may operate erratically due to the leakage current at OFF of  
MEX-F SPECIFICATIONS  
ES-4623 Rev.7 Page 2/5  
http://www.m-system.co.jp/  
MODEL: MEX-F  
EXTERNAL VIEW  
LCD Meter  
Timer Adj.  
Deadband Adj.  
Zero Adj.  
Electronic Limit  
Zero Adj.  
Electronic Limit  
Span Adj.  
1
2
3
4
Mode Selector  
Span Adj.  
Front Cover (open)  
EXTERNAL DIMENSIONS unit: mm (inch)  
CLAMP  
(top & bottom)  
7.8 (.31)  
DIN RAIL  
35mm wide  
8
9
7
6
5
4
2–  
4.5 (.18) dia.  
MTG HOLE  
25 (.98) deep  
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.  
TERMINAL ASSIGNMENTS unit: mm (inch)  
INPUT RESISTOR  
(model: REM)  
8
7
6
5
4
9
3
2
10 11  
1
Input shunt resistor attached  
for current input.  
MEX-F SPECIFICATIONS  
ES-4623 Rev.7 Page 3/5  
http://www.m-system.co.jp/  
MODEL: MEX-F  
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM  
***  
****  
Break  
SSR  
DEAD-  
BAND  
ADJ.  
No Input  
Detector  
Z
S
1
2
Input  
Dir. / Rev.  
Selector  
Electronic  
Limiter  
Compa-  
rator  
Amplifier  
+
R
Control  
Output  
Driver  
5
6
4
*
CONTROL  
OUTPUT  
SETPOINT  
RE-TRANSMITTED  
OUTPUT  
3
Feedback  
Dir. / Rev.  
Selector  
Output  
Driver  
A
+
9
Position  
Detector  
POSITION  
FEEDBACK INPUT  
10  
11  
**  
Timer  
TIMER  
Z
S
U(+)  
7
8
POWER  
V(–)  
Base Socket  
Input shunt resistor attached for current input.  
*
** Option /E  
*** Operation Mode Selector  
****Option /B  
3-PHASE MOTOR  
M
Control Output Examples  
max.  
min.  
+
Incorporated SSR  
24V AC Dry Contact  
External  
SSR Drive  
1
3-PHASE SSR  
3-PHASE SSR  
max.  
min.  
1
2
3
+
Constant  
Curent  
M
2
3
AC  
MOTOR  
SSR or  
Photo MOSFET Relay  
U
V
W
Position Feedback Input Examples  
Potentiometer Feedback  
Current Feedback  
max.  
9
9
Resist/  
Voltage  
Converter  
FEEDBACK  
POT  
Voltage  
10  
+
10  
11  
Amplifier  
FEEDBACK  
11  
min.  
20Ω  
Z
S
Z
S
MEX-F SPECIFICATIONS  
ES-4623 Rev.7 Page 4/5  
http://www.m-system.co.jp/  
MODEL: MEX-F  
SIGNAL CHARACTERISTICS & DIRECT/REVERSE ACTIONS  
POSITION SETPOINT INPUT & CONTROL OUTPUT  
MAX  
(100%)  
1
2
SETTING  
GRAPH  
2
OPERATION  
Reverse  
Action  
When the position setpont signal increases,  
the control output goes towared maximum side.  
Direct  
Action  
1
When the position setpoint signal increases,  
the control output goes toward minimum side.  
The positioner is factory set to "Reverse" control action.  
Specify "Operation Mode Selector" type (code 1) when ordering, if changing out-  
put action to "Direct".  
MIN  
(0%)  
20  
(100%)  
4 POSITION  
(0%) SETPOINT INPUT  
RE-TRANSMITTED OUTPUT & CONTROL OUTPUT  
MAX  
(100%)  
1
2
SETTING  
GRAPH  
2
OPERATION  
Reverse  
Action  
When the control output goes toward maximum  
side, the re-transmitted signal increases.  
Direct  
Action  
1
When the control output goes toward maximum  
side, the re-transmitted signal decreases.  
The positioner is factory set to "Reverse" control action.  
Specify "Operation Mode Selector" type (code 1) when ordering, if changing out-  
put action to "Direct".  
MIN  
(0%)  
20  
(100%)  
4
(0%)  
RE-TRANSMITTED  
OUTPUT  
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.  
Photo MOSFET Relay  
A kind of semiconductor relay which has advantages of both solid state relay and mechanical relay, thanks to its low ON-  
resistance characteristic. It also features high speed ON/OFF operation and low leak current.  
Specifications are subject to change without notice.  
MEX-F SPECIFICATIONS  
ES-4623 Rev.7 Page 5/5  
http://www.m-system.co.jp/  

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