ES-8341 Rev.6

R3-RS8B

Remote I/O R3 Series

RTD INPUT MODULE

(high accuracy, 8 points, isolated)

MODEL: R3-RS8B[1][2]

ORDERING INFORMATION

• Code number: R3-RS8B[1][2]
Specify a code from below for each of [1] and [2]. 
  (e.g. R3-RS8BW/Q)
• Specify the specification for option code /Q
  (e.g. /C01/SET)

NO. OF CHANNELS

8B: 8 channels, high accuracy

[1] COMMUNICATION MODE

S: Single
W: Dual

[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-8341)

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 input 3 to input 4 to input 5 to input 6 to input 7 to input 8 to internal bus or internal power
Sensor type: Selectable with the side DIP SW
(Independent types selectable per group of 4 channels.)
Temperature unit: °C or °F selectable with the side DIP SW
Conversion rate: Selectable with the side DIP SW
Burnout detection: Upscale or downscale selectable with the side DIP SW
Linearization: Standard
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 burnout; Green in normal operating conditions.

INPUT SPECIFICATIONS

Maximum leadwire resistance: 10 Ω per wire
Sensing current: Approx. 0.5 mA

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: 200 g (0.44 lb)

PERFORMANCE

Conversion accuracy: Refer to the table at the end of this section.
Conversion rate: 160 / 80 / 40 / 20 msec. selectable
Data range
°C
: Engineering unit value × 100 (integer)
°F: Engineering unit value × 10 (integer)
Data allocation: 8
Current consumption: 120 mA
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Resolution: 0.01℃
Burnout response time: ≤ 2 sec.
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute (input 1 to input 2 to input 3 to input 4 to input 5 to input 6 to input 7 to input 8 to internal bus or internal power)
2000 V AC @ 1 minute (power input to FG; isolated on the power supply module)

EXTERNAL VIEW

INPUT DATA DESCRIPTIONS

■ ANALOG DATA (TEMPERATURE DATA)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM