MODEL: R8-SS2

http://www.m-system.co.jp/

R8-SS2 SPECIFICATIONS

ES-9730 Rev.2 Page 1/4

Remote I/O R8 Series

DC CURRENT INPUT MODULE

(2 points, isolated)

Functions & Features

• 2 channels for DC current input, compact size remote I/O

module

• Isolation between channels

• Input range adjustment with DIP switch or PC configurator

12 (.47)

115 (4.53)

59 (2.32)

mm (inch)

MODEL: R8–SS2[1]

ORDERING INFORMATION

• Code number: R8-SS2[1]

Specify a code from below for [1].

(e.g. R8-SS2/Q)

• Specify the specification for option code /Q

(e.g. /C01)

[1] OPTIONS

blank: none

/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

RELATED PRODUCTS

• PC configurator software (model: R8CFG)

Downloadable at M-System’s web site.

A dedicated cable is required to connect the module to the

PC. Please refer to the internet software download site or

the users manual for the PC configurator for applicable

cable types.

GENERAL SPECIFICATIONS

Connection

•Input: 4-pin e-CON connector

PWB connector XN2D-1474-S002 (Omron)

Recommended cable connector XN2A-1470 (Omron)

Outer sheath diameter: max. 1.5 dia

(The cable connector is not included in the package.

Refer to the specifications of the product.)

•Excitation supply, internal bus:

Connected to internal bus connector

•Internal power: Supplied from internal bus connector

Isolation: Input 1 to input 2 to exc. supply to internal bus or

internal power

Input range: Selectable with the side DIP SW

Module address: With rotary switch

Terminating resistor: Built-in (DIP Switch, default: disable)

Configuration mode: With DIP switches on the side panel

Status indicator: Bi-color (red/green) LED; Refer to the

instruction manual.

Input status indicators: Red LED; Refer to the instruction

manual.

INPUT

Input range: -20 – +20 mA DC configurable

Input range: -5 - +105 % (in percentage of input range)

Input resistance: 100 Ω

INSTALLATION

Max. current consumption: 100 mA

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: DIN rail

Weight: 60 g (2.12 oz)

PERFORMANCE

Conversion accuracy (in percentage of input range)

±0.1 % (@ input range -20 - +20 mA)

Conversion accuracy is inversely proportional to input span.

Conversion accuracy computation example:

When input range is 4 - 20 mA: conversion accuracy =

nominal input span (40 mA) ÷ input span (16 mA) × 0.1(%)

= 0.25 (%).

Nominal input span is the same as the span at input range

-20 - +20 mA DC.

Conversion rate: 2 msec.

Input circuit time constant: Approx. 1 msec.

Data range: 0 – 10000 of the input range

Data allocation: 2