ES-8330 Rev.8
R3-NM3
Remote I/O R3 Series
MODBUS INTERFACE MODULE
(For temperature control module)
MODEL: R3-NM3-[1][2]
ORDERING INFORMATION
• Code number: R3-NM3-[1][2]
Specify a code from below for each of [1] and [2].
(e.g. R3-NM3-R/Q)
• Specify the specification for option code /Q
(e.g. /C01/SET)
[1] POWER INPUT
N:
No power supply
AC Power
K3
: 100 – 120 V AC
(Operational voltage range 85 - 132 V, 47 - 66 Hz) *
L3
: 200 – 240 V AC
(Operational voltage range 170 - 264 V, 47 - 66 Hz) *
DC Power
R:
24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) *
* Not selectable for use with independent power modules or network modules with the internal power input options.
[2] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
EX-FACTORY SETTING
/SET
: Preset according to the Ordering Information Sheet
(No. ESU-8354)
PACKAGE INCLUDES...
• Terminating resistor (110 Ω, 0.25 W)
GENERAL SPECIFICATIONS
Connection
Modbus
: Euro type connector terminal
(applicable wire size: 0.2 to 2.5 mm
2
, stripped length 7 mm)
Internal bus
: Via the Installation Base
(model: R3-BSx)
Internal
power
: Via the Installation Base (model: R3-BSx)
Power input, RUN contact output
: M3 separable screw terminal (torque 0.5 N·m)
Screw terminal
: Nickel-plated steel
Isolation
: Modbus to internal bus or internal power to power input to RUN contact output to FG
Input error data
: Input value setting at input module error with side DIP SW
Main/Sub switching control in dual communication mode
: Selectable with the side DIP SW (refer to the manual)
Dual communication setting
: Set with the side DIP switch
Data allocation setting
: Set with the side DIP switch
RUN indicator
: Bi-color (green/red) LED; Green ON in normal communication; Red ON when receiving data (Function selected with DIP SW)
ERR indicator
: Bi-color (green/red) LED; Green blinking / ON (0.1 sec.) at communication or setting error; Red ON at transmitting data (Function selected with DIP SW)
■
RUN CONTACT OUTPUT
RUN contact
: Turns ON while the green RUN LED is ON (Modbus in normal communication).
Rated load
: 250 V AC @ 0.5 A (cos ø = 1)
30 V DC @ 0.5 A (resistive load)
Maximum switching voltage
: 250 V AC or 30 V DC
Maximum switching power
: 250 VA or 150 W
Minimum load
: 1 V DC @ 1 mA
Mechanical life
: 2 × 10
7
cycles (300 cycles/min.)
When driving an inductive load, external contact protection and noise quenching recommended.
MODBUS COMMUNICATION
RS-485
Standard
: Conforms to TIA/EIA-485-A
Transmission distance
: 500 meters max.
Transmission media
: Shielded twisted-pair cable
(CPEV-S 0.9 dia.)
Transmission setting
: DIP switch (front)
Data
: RTU (Binary) or ASCII
Parity
: None, even or odd
Baud rate
: 4800, 9600, 19.2 k, 38.4 k (bps)
Node address
: Rotary switch; 01 – F7
INSTALLATION
Power consumption
•
AC
:
Approx. 20 VA
•
DC
: Approx. 12 W
Current consumption (no power supply):
100 mA
Output current (power supply)
: 250 mA continuous at 20 V DC; 400 mA for 10 minutes
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
: 200 g (0.44 lb)
PERFORMANCE
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 1500 V AC @ 1 minute (Modbus to internal bus or internal power to power input to RUN contact output to FG)
EXTERNAL VIEW
COMMUNICATION CABLE CONNECTIONS
MODBUS FUNCTION CODES & SUPPORTED CODES
MODBUS I/O ASSIGNMENT
TRANSMISSION DATA DESCRIPTIONS
MODULE STATUS, ERROR STATUS, DATA ERROR STATUS
I/O DATA DESCRIPTIONS
The data allocations for typical I/O modules are shown below.
Refer to the manual for each module for detailed data allocations.
■ ANALOG DATA (16-bit data, models: R3-SV4, YV4, DS4, YS4, US4, etc.)
■ TEMPERATURE DATA (16-bit data, models: R3-RS4, TS4, US4, etc.)
■ ANALOG DATA (16-bit data, models: R3-CT4A, CT4B, etc.)
■ ACCUMULATED COUNT DATA (32-bit data, models: R3-PA2, PA4A, WT1, WT4, etc.)
■ BCD DATA (32-bit data, models: R3-BA32A, BC32A, etc.)
■ 16-POINT DISCRETE DATA (models: R3-DA16, DC16, etc.)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
Caution: FG terminal is NOT a protective conductor terminal.