ES-7805-AX Rev.0

R7ML-LC2

Remote I/O R7 Series

MECHATROLINK I/O MODULE

(strain gauge input, 2 points, isolated, with monitor output, MECHATROLINK-I / -II use)
Functions & Features
• 2 points strain gauge input for MECHATROLINK -I/ -II
• Extension module can be connected
• Individual channels, zero adjustment, span adjustment, and scaling can be set with the configurator software (model: R7CON)
 

MODEL: R7ML-LC2–R[1]

ORDERING INFORMATION

• Code number: R7ML-LC2-R[1]
Specify a code from below for [1].
  (e.g. R7ML-LC2-R/R20/F2K/Q)
• Specify the specification for option code /Q
  (e.g. /C01)

I/O TYPE

LC2: Strain gauge input, 2 points (with monitor output)

POWER INPUT

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

[1] OPTIONS (multiple selections)

Input Range
 (be sure to specify)
/R20: -2 - +2 mV/V
/R10: -1 - +1 mV/V
/R05: -0.5 - +0.5 mV/V
CR Filter
(be sure to specify)
/F2K: 2 kHz/2 Hz
/F1: 1 Hz/2 Hz
Other Options
blank: none
/Q: Option other than the above (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

RELATED PRODUCTS

• PC Configurator cable (model: MCN-CON or COP-US)
• PC configurator software (model: R7CON)
Downloadable at our web site.
• Discrete input extension module (model: R7ML-EAx)
• Discrete output extension module (model: R7ML-ECx)

GENERAL SPECIFICATIONS

Connection
  MECHATROLINK: MECHATROLINK-I/-II connector 
  Power input, I/O: 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: Input 0 or monitor output 0 to input 1 or monitor output 1 to MECHATROLINK or FG to power
Zero adjustments: Configurable via R7CON
Span adjustments: Configurable via R7CON
Extension: No extension (*), Discrete input 8 or 16 points, Discrete output 8 or 16 points
Selectable with the front DIP SW
(*) Factory default setting
Load coefficient: Configurable via R7CON
Averaging: 2 (*), 4, 8, 16, 32, 64, 128, 256, 512, 1024
Selectable with the front DIP SW
(*) Factory default setting
Excitation Voltage: 5 V (*), 2.5 V
Selectable with the front DIP SW
(*) Factory default setting
Lowpass filter: 2 kHz (1 Hz for option /F1)(*), 2 Hz
Selectable with the front DIP SW
(*) Factory default setting
Monitor output: Configurable via R7CON
Status indicator LEDs: PWR, RUN, ERR, SD, RD
(Refer to the instruction manual)
Input status indicator LED: 0 to F
(Refer to the instruction manual)
Configurator connection: 2.5 dia. miniature jack
■Recommended solderless terminal

MECHATROLINK COMMUNICATION

MECHATROLINK mode: Set with DIP switches
(MECHATROLINK-I or -II, data length; Factory default setting: MECHATROLINK-II; data length (17 bytes)
(Refer to the instruction manual)
Station address: 60H - 7FH
(Function selected with Rotary SW.  Factory default setting: 60H) (Refer to the instruction manual)

■ MECHATROLINK-I
Baud rate: 4 Mbps
Transmission distance: 50 m max.
Distance between stations: 30 cm min.
Transmission media: MECHATROLINK cable (Model JEPMC-W6003-x-E, Yaskawa Controls Co., Ltd.)
Max. number of Subordinate Devices: 15
(The maximum number of Subordinate Devices might change depending on the Main Device unit. Refer to the manual of the Main Device unit)
Transmission cycle: 2 msec. (fixed)
Data length: 17 bytes 

■ MECHATROLINK-II
Baud rate: 10 Mbps
Transmission distance: 50 m max.
Distance between stations: 50 cm min.
Transmission media: MECHATROLINK cable (Model JEPMC-W6003-x-E, Yaskawa Controls Co., Ltd.)
Max. number of Subordinate Devices: 30
(The maximum number of Subordinate Devices might change depending on the Main Device unit. Refer to the manual of the Main Device unit)
Transmission cycle: 0.5 msec., 1 msec., 1.5 msec., 2 msec., 4 msec., 8 msec.
Data length: 17 bytes / 32 bytes selectable (Must choose identical data size for all stations on one network)

INPUT SPECIFICATIONS

■Strain Gauge Input:
• Strain Gauge
Input range: 
Option code /R20
  -2 – +2 mV/V (at 5 V excitation) 
  -4 – +4 mV/V (at 2.5 V excitation)
Option code /R10
  -1 – +1 mV/V (at 5 V excitation)
  -2 – +2 mV/V (at 2.5 V excitation)
Option code /R05
  -0.5 – +0.5 mV/V (at 5 V excitation) 
  -1 – +1 mV/V (at 2.5 V excitation)
Max. Input range: 
Option code /R20
  -3 – +3 mV/V (at 5 V excitation) 
  -6 – +6 mV/V (at 2.5 V excitation)
Option code /R10
  -1.5 – +1.5 mV/V (at 5 V excitation) 
  -3 – +3 mV/V (at 2.5 V excitation)
Option code /R05 
  -0.75 – +0.75 mV/V (at 5 V excitation) 
  -1.5 – +1.5 mV/V (at 2.5 V excitation)
Zero adjustment: 
Option code /R20
  -1 – +1 mV/V (at 5 V excitation) 
  -2 – +2 mV/V (at 2.5 V excitation)
Option code /R10
  -0.5 – +0.5 mV/V (at 5 V excitation) 
  -1 – +1 mV/V (at 2.5 V excitation)
Option code /R05 
  -0.25 – +0.25 mV/V (at 5 V excitation) 
  -0.5 – +0.5 mV/V (at 2.5 V excitation)
Lowpass filter:
  Approx. 2 kHz or approx. 2 Hz (option code /F2K)
  Approx. 1 Hz or approx. 2 Hz (option code /F1)
Conversion rate: min. 2000 samples/sec.
• Excitation: 5 V ±10 % or 2.5 V ±10 %
(Input range doubled in the case of 2.5 V excitation)
Maximum current: max. 60 mA (Up to 4 strain gauges of 350 Ω can be connected in parallel-adding connection at 5 V excitation) 
  max. 100 mA (at 2.5 V excitation)

OUTPUT SPECIFICATIONS

Output range: 0 – 10 V DC (for input 0 - 100 %)
Load resistance: ≥ 100 kΩ
Operational range: -115 - +115 %

INSTALLATION

Current consumption
•DC: Approx. 130 mA
Operating temperature: 0 to 55°C (32 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: 250 g (0.55 lb)

PERFORMANCE

Accuracy: 
Option code except /R05
 ±0.04 % (Averaging 128 samples or more)
 ±0.05 % (Averaging 64 samples)
 ±0.10 % (Averaging 8, 16, 32 samples)
 ±0.15 % (Averaging 4 samples)
 ±0.20 % (Averaging 2 samples)
Option code /R05
 ±0.05 % (Averaging 512 samples or more)
 ±0.10 % (Averaging 64, 128, 256 samples)
 ±0.20 % (Averaging 16, 32 samples)
 ±0.30 % (Averaging 2, 4, 8 samples)
Monitor output accuracy: ±0.1 %
Converted data range:
 Input 0 / input 1: 0 – 10000 of the range from zero to span
 Total input data: Sum of input 0 and input 1
Temperature coefficient:
 Strain gauge input: ±0.015 %/°C (±0.008 %/°F)
 Monitor output: ±0.015 %/°C (±0.008 %/°F)
Input delay time:
 Lowpass filter 2 kHz max. 20 msec. (0 - 90 %) 
 Lowpass filter 2 Hz max. 200 msec. (0 - 90 %)
 Lowpass filter 1 Hz max. 400 msec. (0 - 90 %)
Output delay time: ≤ 250 msec. (0 – 90 %)
Resolution: 1/10000
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(input 0 or monitor output 0 to input 1 or monitor output 1 to power)
500 V AC @ 1 minute (MECHATROLINK or FG to I/O or power)

STANDARDS & APPROVALS

EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
RoHS Directive

PC CONFIGURATOR

The following parameters can be set with using PC Configurator Software (model: R7CON)
Refer to the users manual for the R7CON for detailed operation of the software program.

EXTERNAL VIEW

COMMUNICATION CABLE CONNECTIONS

TERMINAL ASSIGNMENTS

■I/O TERMINAL ASSIGNMENT

MECHATROLINK RELATED COMMANDS

DATA CONVERSION

I/O DATA DESCRIPTIONS

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

Note: In order to improve EMC performance, bond the FG terminal to ground.
Caution: FG terminal is NOT a protective conductor terminal.