ES-7818 Rev.7

R7EWTU

Remote I/O R7 Series

MULTI POWER MONITORING MODULE

(Clamp-on current sensor CLSE, Modbus/TCP)

MODEL: R7EWTU-2[1]1-AD4[2]

ORDERING INFORMATION

• Code number: R7EWTU-2[1]1-AD4[2]
Specify a code from below for each of [1] and [2].
(e.g. R7EWTU-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 points (internal power 5 V)
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-7818)

FUNCTIONS & FEATURES

The R7EWTU is a Multi Power Monitoring Module for Modbus/TCP.
The R7EWTU 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 availabe.
All measured values, counter values, display mode, setting data are stored in the non-volatile memory when power is off.

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.

GENERAL SPECIFICATIONS

Connection
Ethernet: RJ-45 connector
Power, input: 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 Ethernet 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: Connection, clamp-on sensor selection
Status indicator LED: PWR, RUN
User-configurable items: Front DIP SW
• Connection configuration
• Balanced/unbalanced
• Clamp sensor range
• Configuration method
(Refer to the manual for details)
■Recommended solderless terminal size - M3

ETHERNET COMMUNICATION

Communication Standard: IEEE 802.3u
Transmission: 10BASE-T, 100BASE-TX
Baud rate: 10/100 Mbps (Auto Negotiation function)
Protocol: Modbus/TCP
Data: RTU (Binary)
Max. number of socket connections: 2
Connection: RJ-45 modular jack
Transmission media: 10BASE-T (STP, Category 5)
100BASE-TX (STP, Category 5e)
Max. length of fieldbus segment: 100 meters
IP address: 192.168.0.1 (factoy default)
Configurable with software (model: PMCFG)
Port number: 502
Ethernet status indicator: LINK, LINK100, COL

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: ≤ U_LN² / 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: < 8 VA
•DC: < 3 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: 300 g (0.66 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:
Harmonic contents and frequency: ≤ 1 sec.
Other: ≤ 500 msec.
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength:
1500 V AC @ 1 minute (Current input or voltage input or discrete input to Ethernet to power to FE1)
1000 V AC @ 1 minute (Sensor output or current input or voltage input to discrete input)

EXTERNAL VIEW

TERMINAL CONNECTIONS

TERMINAL ASSIGNMENTS

■ INPUT TERMINAL ASSIGNMENT

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM