ES-8279 Rev.3
R3-MEX2
Remote I/O R3 Series
VALVE POSITIONER MODULE
(for 2 systems; built-in SSR)
MODEL: R3–MEX2[1][2]
ORDERING INFORMATION
• Code number: R3-MEX2[1][2]
Specify a code from below for each of [1] and [2].
(e.g. R3-MEX2W/CE/Q)
• Specify the specification for option code /Q
(e.g. /C01)
VALVE POSITIONER
2
: 2 systems
FEEDBACK RESISTANCE
Potentiometer input
CONTROL OUTPUT
Built-in SSR
[1] COMMUNICATION MODE
S
: Single
W
: Dual
[2] OPTIONS (multiple selections)
Standards & Approvals
blank
: Without CE
/CE
: CE marking
Other Options
blank
: none
/Q
: Option other than the above (specify the specification)
SPECIFICATIONS OF OPTION: Q
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
CAUTION
・This unit is not designed to be used with the following types of interface modules (models: R3-NC2, R3-NEIP1, R3-NFx, R3-NLx).
・Please use this unit with interface modules (models: R3-NC1, R3-NC3, R3-NDx, R3-NE1, R3-NFL1, R3-NM1, R3-NM4, R3-NP1) of firmware version V2.00 or higher, and interface modules (models: R3-NM3, R3-NML3) of firmware version V1.00 or higher.
GENERAL SPECIFICATIONS
Connection
Internal bus
: Via the Installation Base (model: R3-BSx)
Input, Output
: M3 separable screw terminal
(torque 0.5 N·m)
Internal power
: Via the Installation Base (model: R3-BSx)
Screw terminal
: Nickel-plated steel
Full-close position setting range
:
0 - 25 % (factory default: 0 %)
Full-open position setting range
:
75 - 100 % (factory default: 100 %)
Deadband adjustment
:
0.1 – 8.0 % adjustable (factory default: 1.5 %)
Restart limiting timer
:
0.5 to 10 sec. (factory default: 2 sec.)
Motor deadlock detecting time
:
60 – 1000 sec. (factory default: 120 sec.)
Isolation
: Cotrol output 1 to control output 2 to feedback potentiometer 1 or feedback potentiometer 2 or internal bus or internal power
RUN indicator
: Bi-color (red/green) LED;
Red when the bus A operates normally;
Green when the bus B operates normally;
Amber when both buses operate normally.
ERR indicator
: Green LED turns on in normal operating conditions.
INPUT SPECIFICATIONS
■
Feedback Potentiometer
: 100 Ω – 10 kΩ
Minimum span
: 50 % of total resistance
Excitation
: Approx. 3.3 V DC
OUTPUT SPECIFICATIONS
■ Control Output
: SSR (zero-crossing); 20 - 240 V AC 0.1 - 1 A
Leakage current at OFF
: Approx. 10 mA @ 240 V AC
Output operation at loss of communication
: When a communication error occurs in the middle of an output operation, the operation continues toward until reaching target position most recently set by Host device.
INSTALLATION
Operating temperature
: -10 to +55°C (14 to 131°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Atmosphere
: No corrosive gas or heavy dust
Mounting
: Installation Base (model: R3-BSx)
Weight
: 190 g (0.42 lb)
PERFORMANCE
■ POSITION FEEDBACK INPUT
Conversion accuracy
: ±0.4 %
The conversion accuracy is defined against the potentiometer's full span.
Conversion rate
: 10 msec.
Data range
: 0 – 1000
Data allocation
: 4
Current consumption
: Approx. 50 mA
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°F)
Temperature coefficient is defined against the potentiometer's full span.
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength:
2000 V AC @1 minute (control output 1 to control output 2 to position feedback 1 or position feedback 2 or internal bus or internal power)
2000 V AC @1 minute (power input to FG; isolated on the power supply module)
STANDARDS & APPROVALS
EU conformity
:
EMC Directive
EMI EN 61000-6-4
EMS EN 61000-6-2
Low Voltage Directive
EN 61010-1, EN 61010-2-201
Measurement Category II (control output)
Pollution degree 2
Position feedback 1 or position feedback 2 to control
output 1 to control output 2: Reinforced insulation (300 V)
RoHS Directive
FUNCTIONS
•
SSR (Solid State Relay)
SSR consists only of semiconductor elements, and thus SSR is free from arc discharge and chattering which are typical with electromagnetic relays.
SSR has excellent durability against vibration, physical impact, and environmental influences.
•
Zero-Cross Function
SSR with zero-cross function turns on when AC power voltage is near zero.
When input is provided in the middle of a wave cycle, SSR delays switching until the next time the voltage becomes near zero, thus limiting transient switching noise voltage and rush current.
EXTERNAL VIEW
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM