ES-7803-BB Rev.0

R7M-DC4G

Remote I/O R7 Series

MODBUS I/O MODULE

(relay c contact output, 4 points, 115.2 kbps)
Functions & Features
• 4 points relay c contact output module for Modbus

MODEL:R7M–DC4G-R[1]

ORDERING INFORMATION

• Code number: R7M-DC4G-R[1]
Specify a code from below for [1].
(e.g. R7M-DC4G-R/Q)
• Specify the specification for option code /Q
(e.g. /C01/SET)

I/O TYPE

DC4G: Relay c contact output, 4 points

POWER INPUT

DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

[1] 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-7803-BB)

CAUTION

• Extension modules cannot be connected.

RELATED PRODUCTS

• PC Configurator cable (model: MCN-CON or COP-US)
• PC configurator software (model: R7CON)
Downloadable at our web site.

GENERAL SPECIFICATIONS

Connection: M3 separable screw terminal (torque 0.5 N·m)
Solderless terminal: Refer to the drawing at the end of the section.
Recommended manufacturer: Japan Solderless Terminal MFG. Co., Ltd., Nichifu Co., Ltd.
Applicable wire size: 0.25 to 1.65 mm² (AWG 22 to 16)
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (gray)
Isolation: Output to Modbus or FG to power
Output at the loss of communication:
Hold the output (*), B contact output
Selectable with the front DIP SW
(*) factory default setting
Status indicator LEDs: PWR, RUN, ERR, SD, RD
(Refer to the instruction manual)
Discrete output status indicator LED: LED turns on with output ON
Configurator connection: 2.5 dia. miniature jack
■Recommended solderless terminal

MODBUS COMMUNICATION

Standard: Conforms to TIA/EIA-485-A
Transmission distance: 500 meters max.
Transmission media: Shielded twisted-pair cable
(CPEV-S 0.9 dia.)
Communication parameter: With Configurator Software (model: R7CON)
• Data Mode: RTU (default) or ASCII
• Parity: NONE (default), ODD or EVEN
• Data bit: 8: RTU (default), 7: ASCII
• Stop bit: 1 or 2 (default)
Baud rate setting: With rotary switch
115.2 kbps, 57.6 kbps, 38.4 kbps (default), 28.8 kbps,
19.2 kbps, 14.4 kbps, 9600 bps, 4800 bps, 2400 bps,
1200 bps
Node address setting: 1 - 99 (with rotary switch) (factory default setting: 00)
Terminating resistor: Built-in (Selected with the DIP SW; factory setting: disabled)

OUTPUT SPECIFICATIONS

Common: 1 common per 1 point
Maximum load current: 2.0 A per point
Maximum outputs applicable at once: No limit (at 24 V DC)
Output supply voltage/current: 24 V DC ±10 %/ approx. 70 mA
Rated load: 250 V AC^*1 @ 2 A (cos ø = 1),
30 V DC @ 2 A (resistive load)
*1. > 50 V AC when it is used as a product relevant to EU directive.
Maximum switching voltage: 250 V AC, 30 V DC
Maximum switching power: 500 VA (AC), 60 W (DC)
Minimum applicable load: 5 V DC @ 10 mA
Mechanical life: 10⁷ cycles (300 cycles per min.)
When driving an inductive load, external contact protection and noise quenching recommended.
ON delay time: ≤ 10 msec.
OFF delay time: ≤ 10 msec.

INSTALLATION

Current consumption
• DC: Approx. 35 mA
• Relay driving current: Approx. 70 mA
Operating temperature: -10 to +55°C (14 to 131°F)
Storage temperature: -20 to +65°C (-4 to +149°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Atmosphere: No corrosive gas or heavy dust
Mounting: DIN rail (35 mm rail)
Weight: 200 g (0.44 lb)