SENECA R203 Energy Power Meter Instruction Manual

SENECA R203 Energy Power Meter

PRELIMINARY WARNINGS

• The word WARNING preceded by the symbol indicates conditions or actions that put the user’s safety at risk.
• The word ATTENTION preceded by the symbol indicates conditions or actions that might damage the instrument or the connected equipment.
• The warranty shall become null and void in the event of improper use or tampering with the module or devices supplied by the manufacturer as necessary for its correct operation, and if the instructions contained in this manual are not followed.
• WARNING: The full content of this manual must be read before any operation. The module must only be used by qualified electricians. Specific documentation is available via QR-CODE shown on page 1.
• The module must be repaired and damaged parts replaced by the Manufacturer. The product is sensitive to electrostatic discharges. Take appropriate measures during any operation.
• Electrical and electronic waste disposal (applicable in the European Union and other countries with recycling). The symbol on the product or its packaging shows the product must be surrendered to a collection centre authorized to recycle electrical and electronic waste.

MODULE LAYOUT

Weight: 170 g; Enclosure: UL94-V0 self-extinguishing PC/ABS material, black.

SIGNALS VIA LED ON FRONT PANEL

STS

(Status)

| On| Set IP address (powered module)
Flashing| Waiting for the IP address from the DHCP (powered module)
WIRING ERROR| Flashing| Wiring error
Off| Correct wiring
RX| On| RS485 connection anomaly
Flashing| Reception of data packet completed on RS485
TX| Flashing| Transmission of data packet completed on RS485
ETH TRF (Yellow)| Flashing| Packet transit on Ethernet port
ETH LNK (Green)| Flashing| Ethernet port connected

TECHNICAL SPECIFICATIONS

CERTIFICAZIONI

|

https://www.seneca.it/products/r203/doc/CE_declaration

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INSULATION

|

ETH1             ETH2

LAN              WAN

ANALOG

ANALOG OUTPUT

INPUT

DIGITAL

I/O

PWR USB

RS485 * (Rated withstand voltage)

ENVIRONMENTAL CONDITIONS

| Temperature:                          -25°C ÷ +55°C

Humidity:                               30% ÷ 90% non condensing.

Storage temperature:               -30°C÷ + 85°C

Degree of protection:               IP20

ASSEMBLY| DIN rail 35mm IEC EN60715, wall or panel with screws.
CONNECTIONS| Screw terminals 5 mm, 7.5 mm and 3.5 mm pitch (RS485), cable with section <2.5 mm2
POWER SUPPLY| Voltage: 90 ÷ 264 Vac @ 50 ÷ 60 Hz, max. absorption 2.8 W, 5.4 VA
COMMUNICATION PORTS| RS485: Baud rate: 1200 ÷ 115200 baud (for further information see the user manual). USB: Micro-USB port for programming
INPUT VOLTAGE| Voltage| up to 600 Vac, frequency 45 ÷ 65 Hz

Minimum voltage 5 V (F.S. 150 Vac); 20 V (F.S. 600 Vac)

TA / TA (mV) ANALOGUE INPUTS

| Current Input| Current input for CT: 1 ÷ 5 Full scale.

voltage input (mV) for CT with voltage output or Rogowski: up to 333 mV full scale.

Base prec. (*)| Network frequency: 50 ÷ 60 Hz. Voltmeter: 0.2 %

Ammeter: 0.2%, wattmeter: 0.5%

(*) See the user manual for the error limits.

ROGOWSKI ANALOGUE INPUT

| Class / base prec. (*)| Network frequency: 50 ÷ 60 Hz. Voltmeter: 0.5 %

Ammeter: 0.5%, wattmeter: 1 %

Rogowski supplied by Seneca

| •  100 mV correspond to 1000 A @ 50 Hz (sinusoidal)

•  120 mV correspond to 1000 A @ 60 Hz (sinusoidal) Maximum measurable current: 3 kA @ 50 Hz; 2,5 kA @ 60 Hz

Precision after calibration: ± 1 % (see chapter “Rogowski sensor”)

Linearity: ± 0.2 %

(*) Accuracy is guaranteed in the ranges: CosΦ > 0.9;Vrms: 40 ÷ 600 Vac; Irms: 0.4 – 100% Rogowski current (error due to external Rogowski sensors excluded). See the user manual for the error limits.

ANALOGUE OUTPUT

| Voltage:                             0÷ 10 Vdc, minimum load resistance: 2 kΩ

Current:                             0 ÷ 20 mA, 4 ÷ 20 mA, max. load resistance: 500Ω Transmission error:    0.1% of maximum field

Response time:                  1 s (10% ÷ 90%)

Temperature drift:               100 ppm/K

DIGITAL INPUT| For the technical specifications, see the electrical connection diagrams on page 5
DIGITAL OUTPUT| For the technical specifications, see the electrical connection diagrams on page 5
COUNTERS| Number of counters: 2 at 32 bits; maximum speed: 5KHz
INSTALLATION CATEGORY| Category ⅡI (up to 600 V) in a direct connection

ROGOWSKI SENSOR

The Rogowski sensor is a ring-shaped device designed for measuring AC, impulsive or complex waveforms. For its correct use:

• wrap the ring on the conductor so that the arrow symbol shown in the ring is oriented in the same direction as the conductor current
• make sure that the connections are made correctly
• for a more precise measurement, the conductor cable must be placed in a central position with respect to the ring
• for a correct measurement, calibrate the Rogowski sensor by writing the calibration coefficient in the corresponding Modbus register (see the user manual).
  Example: if the sensor is supplied with a characteristic of 90 mV / 1000 A, on the calibration register corresponding to the phase in which the Rogowski sensor is applied, the value to be set is: 1000 / (90 · 10). NOTE ON ACCURACY: The product has a nominal accuracy of 0.5%. The total accuracy is the sum between the accuracy of the device and the accuracy of the Rogowski sensor connected to it.

ELECTRICAL CONNECTIONS

CAUTION
The installation of this appliance must only be carried out by qualified personnel.
Check that the device plate data (measurement voltage, auxiliary power supply voltage, measurement current, frequency) match the actual data of the network to which the instrument is connected. In the wiring, strictly observe the insertion diagram; inaccuracy in the connections inevitably causes false measurements or damage to the instrument.
Once the instrument is connected, complete the installation with the device configuration.
Grounding of the TA sensors is possible with negative cable connection.
Current measurement is only possible using current transformers.
It is advisable to insert a delayed 1 A fuse as shown in the diagrams below.

C ONNECTIONS FOR ROGOWSKI SENSORS

CONNECTIONS FOR CURRENT OUTPUT TA

CONNECTIONS FOR VOLTAGE OUTPUT TA (mV)

TV CONNECTIONS

ETHERNET CONNECTION RULES
For the Ethernet cabling between the devices, the use of the shielded CAT5 or CAT5e cable is required.

FACTORY IP ADDRESS
The default module IP address is static: 192. 168. 90. 101

WEB SERVER
To access the maintenance Web Server with the factory IP address above, use the following credentials: Account User : admin; Password : admin / Password Admin : admin

CAUTION
DO NOT USE DEVICES WITH THE SAME IP ADDRESS IN THE SAME ETHERNET NETWORK.

DAISY-CHAIN ETHERNET CONNECTION

CAUTION
IT IS NOT ALLOWED TO CREATE LOOPS WITH ETHERNET CABLES
Using the daisy-chain connection it is not necessary to use switches to connect the devices. The following examples show the correct connections.

There must be no loops in the Ethernet cabling, otherwise the communication will not work. The modules and switches must be connected eliminating any loops.
The following examples show the incorrect connections.

The LAN fault-bypass function allows you to keep the connection between the two Ethernet ports of the device ON, in the event of a power failure. If a device turns off, the chain is not interrupted and the devices downstream of the switched-off one will still be accessible. This function has a limited duration: the connection remains active for a few days, typically 4. The fault-bypass function requires that the sum of the lengths of the two cables connected to the switched off module is less than 100m.

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