ES-8371 Rev.5
R3-LC2
Remote I/O R3 Series
STRAIN GAUGE INPUT MODULE
(2 points, isolated)
MODEL: R3-LC2[1][2]
ORDERING INFORMATION
• Code number: R3-LC2[1][2]
Specify a code from below for each of [1] and [2].
(e.g. R3-LC2W/Q)
• Specify the specification for option code /Q
(e.g. /C01/SET)
NO. OF CHANNELS
2
: 2
[1] COMMUNICATION MODE
S
: Single
W
: Dual
[2] OPTIONS
blank
: none
/Q
: With options (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
EX-FACTORY SETTING
/SET
: Preset according to the Ordering Information Sheet
(No. ESU-8371)
GENERAL SPECIFICATIONS
Connection
Internal bus
: Via the Installation Base (model: R3-BSx)
Input
: M3 separable screw terminal (torque 0.5 N·m)
Internal power
: Via the Installation Base (model: R3-BSx)
Screw terminal
: Nickel-plated steel
Isolation
: Input 1 to input 2 to contact input 1 to contact input 2 to internal bus or internal power
Input range
: Selectable with the side DIP SW
Conversion rate
: Selectable with the side DIP SW
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
: Bi-color (red/green) LED;
Red with input abnormality;
Green in normal operating conditions.
INPUT SPECIFICATIONS
■
Strain Gauge Input
•
Strain Gauge
Rated output from strain gauge
:
0.0 – 1.0 mV/V (-5.0 – +5.0 mV, span 1.0 – 10 mV)
0.0 – 3.0 mV/V (-15.0 – +15.0 mV, span 5.0 – 30 mV)
•
Excitation
: 5 V
Maximum current
: 60 mA
Load resistance
: 85 Ω minimum
■
Contact Input
Number of input
: 3 points (zero, span, tare adjustments) per input channel, 6 points in total
Isolation
: Optical isolator + transformer (internal power supply)
Input resistance
: Approx. 5.9 kΩ
Common
: Negative commons, every 3 points
Contact detecting
: 13 V DC
(max. 24 V DC with no load)
ON current/resistance
: ≥ 1.5 mA, ≤ 1.5 kΩ
OFF current/resistance
: ≤ 0.75 mA, ≥ 18 kΩ
Detection levels
ON
: ≥ 10 V
OFF
: ≤ 4 V
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
: 250 g (0.55 lb)
PERFORMANCE
Conversion accuracy
: Refer to the table at the end of this section.
Conversion rate
: 160 / 80 / 40 / 20 msec. selectable
Data range
: 0 – 10000 of the input range
Data allocation
: 4
Current consumption
: 300 mA
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°F) of max. span
Excitation supply
: 5 V ±250 mV
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 1500 V AC @ 1 minute
(input 1 to input 2 to contact input 1 to contact input 2 to internal bus or internal power)
2000 V AC @ 1 minute (power input to FG; isolated on the power supply module)
EXTERNAL VIEW
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM