MODEL: R3-US4
/C03: Rubber coating
Remote I/O R3 Series
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
(No. ESU-8449)
UNIVERSAL INPUT MODULE
(4 points, isolated)
27.5 (1.08)
RELATED PRODUCTS
• PC configurator software (model: R3CON)
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.
130
(5.12)
109
(4.29)
mm (inch)
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
MODEL: R3-US4[1][2]
ORDERING INFORMATION
• Code number: R3-US4[1][2]
Specify a code from below for each of [1] and [2].
(e.g. R3-US4W/A/Q)
Isolation: Input 1 to input 2 to input 3 to input 4 to internal
bus or internal power
Input range: Selectable with configuration software (model:
R3CON)
• Specify the specification for option code /Q
(e.g. /C01/SET)
Temperature unit (Thermocouple or RTD input): Selectable
with PC configuration software (model: R3CON)
Burnout for T/C and RTD input: Upscale, downscale or no
burnout selectable with PC configurator software
Select “No burnout” to minimize the measuring errors
caused by the sensor/wire resistance and the burnout
sensing current. With RTD input, the signal may go
transiently to the opposite direction from the burnout
setting.
Factory default setting
Input: DC voltage, ±12 V
Temperature unit: °C
Burnout: Upscale
CJC: ON
NO. OF CHANNELS
4: 4
Burnout is not detected at DC voltage or potentiometer
input. The burnout sensing current is turned off.
Cold junction compensation (CJC) for T/C input: CJC is
selectable whether enabled or disabled by using the PC
configurator software. The cold junction sensor is mounted
to the terminal of each channel.
[1] COMMUNICATION MODE
S: Single
W: Dual
A/D conversion mode: (Temp. input accuracy: standard)
Low or middle conversion rate selectable with PC
configurator software
[2] OPTIONS (multiple selections)
Temperature input accuracy
blank: Standard
RUN indicator: Bi-color (red/green) LED;
/A: High accuracy
Red when the bus A operates normally;
Other Options
Green when the bus B operates normally;
Amber when both buses operate normally.
ERR indicator: Bi-color (red/ green) LED;
blank: none
/Q: Option other than the above (specify the specification)
Red with burnout; Green in normal operating conditions.
SPECIFICATIONS OF OPTION: Q
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
INPUT SPECIFICATIONS
■ DC Voltage
/C02: Polyurethane coating
Input resistance: ≥ 600 kΩ
R3-US4 SPECIFICATIONS
ES-8449 Rev.7 Page 1/7
http://www.m-system.co.jp/