ES-7816-A Rev.0

R7MWTU

Remote I/O R7 Series

MULTI POWER MONITORING MODULE

(clamp-on current sensor CLSE, Modbus)

MODEL: R7MWTU-2[1]1-AD4[2]

ORDERING INFORMATION

• Code number: R7MWTU-2[1]1-AD4[2]
Specify a code from below for each of [1] and [2]. 
  (e.g. R7MWTU-221-AD4/Q)
• Specify the specification for option code /Q
  (e.g. /C01/SET)

CONFIGURATION

2: Single phase / 2-wire and 3-wire, 
    3-phase / 3-wire and 4-wire

[1] NO. OF SYSTEMS

1: 1 system, Di / Pi x 4 (internal power 5 V)
(no connection with extension module)
2: 2 systems

INPUT

1: 240 V AC / CLSE

POWER INPUT

Universal
AD4: 100 – 240 V AC / 110 – 240 V DC (universal)
(Operational voltage range 85 - 264 V AC, 50 - 60 Hz /
 99 - 264 V DC, ripple 10 %p-p max.)

[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-7816)

FUNCTIONS & FEATURES

The R7MWTU is a Multi Power Monitoring Module for Modbus.
The R7MWTU uses clamp-on current sensors, there is no need of current transformers.
Current sensors are easy to install in existing systems. Wide input range of 5 to 600 A is available.
All measured values, counter values, display mode, setting data are stored in the non-volatile memory when power is off.
A ‘basic’ module can be attached with an ‘extension’ module (except R7MWTU-211-AD4)because of this, it is able to use it as 2-circuit power and 8 discrete inputs module.

CAUTION

• Extension modules cannot be connected to R7MWTU-211-AD4.

RELATED PRODUCTS

• PC Configurator cable (model: MCN-CON or COP-US)
• PC configurator software (model: PMCFG)
Downloadable at our web site.
• Clamp-on current sensor (model: CLSE)
The clamp-on current sensors, not included in this product package, must be ordered separately. Required number depends upon the system configuration.
• Multi power monitoring module (model: R7MWTU-EA8)

PACKAGE INCLUDES...

• Terminating resistor (110 Ω, 0.25 W)

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)
Configuration: Single phase/2-wire and 3-wire, 3-phase/3-wire balanced/unbalanced load, 3-phase/4-wire balanced/unbalanced load
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (gray)
Isolation: Sensor core to sensor output or current input or voltage input to discrete input to Modbus or FG to power
Measured variables
  Voltage: 1-N, 2-N, 3-N, 1-2, 2-3, 3-1
  Current: 1, 2, 3, N
  Active / reactive / apparent power: 1, 2, 3, Σ
  Power factor: 1, 2, 3, Σ
  Frequency
  Active energy: Incoming / outgoing
  Reactive energy: Incoming / outgoing / lag (inductive)
  /lead (capacitive)
  Apparent energy
  Active / reactive / apparent power intervals (demand) 
  Average (demand) current: 1, 2, 3, N 
  Harmonic contents: Σ
  Voltage: 1-N, 2-N, 3-N, 1-2, 2-3, 3-1
  Current: 1, 2, 3, N
  Max. and min. values
  Demand history: 1 to 4
Operating mode setting: Configurator software and DIP switch setting; connection, balanced/unbalanced, clamp-on sensor type (refer to the manual for details)
Status indicator LED: PWR
■Recommended solderless terminal size - M3

MODBUS COMMUNICATION

Communication: Half-duplex, asynchronous, no procedure
Standard: Conforms to TIA/EIA-485-A
Transmission distance: 500 meters max.
Protocol: Modbus - RTU or Modbus - ASCII
Max. number of nodes: 31 (excluding master)
Node address setting: 1 - 99 (with rotary switch) (factory default setting: 00) 
Baud rate setting: With rotary switch 38.4 kbps (default) 19.2 kbps, 9600 bps, 4800 bps
Status indicator LED: RUN, ERR, SD, RD

INPUT SPECIFICATIONS

Frequency: 50 / 60 Hz (45 – 65 Hz)
• Voltage Input
Rated voltage
Line-to-line (delta voltage): 240 V
Line-neutral (phase voltage): 138 V (three-phase/4-wire)
Consumption VA: ≤ ULN2 / 300 kΩ / phase
Overload capacity: 200 % of rating for 10 sec., 120 % continuous
Selectable primary voltage range: 50 – 400 000 V
• Current Input
CLSE-R5: 0 – 5 A AC
CLSE-05: 0 – 50 A AC
CLSE-10: 0 – 100 A AC
CLSE-20: 0 – 200 A AC
CLSE-40: 0 – 400 A AC
CLSE-60: 0 – 600 A AC
Overload capacity: 120 % continous, 500 % for 10 sec.
Note: Use for the circuit not exceed 480 V
Selectable primary current range: 1 – 20 000 A (only with CLSE-R5, refer to the configurator settings)
Operational range
Current: 0 – 120 % of the rating
Voltage: 10 – 120 % of the rating
Apparent power: ≤ 120 % of the rating
Active/reactive power: ±120 % of the rating
Frequency: 45 – 65 Hz
Power factor: ±1
■ Discrete input
Common: Negative common
Maximum frequency: 10 Hz
Minimum pulse width: 50 msec.
Totalized pulse range: 0 - 999 999 999
Count at overflow: Reset and restart at ‘1.’
Detecting voltage/current: 5 V DC / 5 mA approx.
Detecting levels: ≤ 5 kΩ / ≤ 2 V for ON;
≥ 100 kΩ / 4 V for OFF
Operation mode: Discrete and pulse counter

INSTALLATION

Power consumption
•AC: < 5 VA
•DC: < 1.5 W
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
Weight: 200 g (0.44 lb)

PERFORMANCE

Accuracy (at 10 - 35°C or 50 - 35°F, 45 – 65 Hz)
Add the accuracy of the current sensor for overall values.
  Voltage: ±0.5 % of the rating
  Current: ±0.5 % of the rating
  Power: ±1.0 % of the rating
  Power factor: ±1.5 %
  Frequency: ±0.1 % of the rating 
  Energy: ±2.0 % of the rating (range 5 - 100 %, PF 1)
  Harmonic contents: ±2.0 % of the rating
The described accuracy levels are ensured at the input 1 % or more for phase 2 current with 3-phase/3-wire unbalanced load, for neutral current with 3-phase/4-wire unbalanced load, and neutral current with 1-phase/3-wire.
Data update period:
  Frequency: ≤ 1 sec.
  Other: ≤ 500 msec.
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength:
2000 V AC @ 1 minute (current input or voltage input or discrete input to Modbus or FG to input power)
1000 V AC @ 1 minute (current input or voltage input to discrete input)

EXTERNAL VIEW

TERMINAL CONNECTIONS

COMMUNICATION CABLE CONNECTIONS

TERMINAL ASSIGNMENTS

■ INPUT TERMINAL ASSIGNMENT

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM