SENECA R203 Series 3 Phase Energy Power Meter Installation Guide

: July 9, 2024
: SENECA

Table of Contents

SENECA R203 Series 3 Phase Energy Power Meter
PRELIMINARY WARNINGS
MODULE LAYOUT
SIGNALS VIA LED ON FRONT PANEL
TECHNICAL SPECIFICATIONS
ELECTRICAL CONNECTIONS
ELECTRICAL CONNECTIONS
CONNECTIONS FOR ARON INSERTION
TV CONNECTIONS
Read User Manual Online (PDF format)
Download This Manual (PDF format)

SENECA R203 Series 3 Phase 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 using the QR-CODE shown on page 1.
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| 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.

CONTACT INFORMATION

Technical support| support@seneca.it| Product information| sales@seneca.it
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This document is the property of SENECA srl. Copies and reproduction are prohibited unless authorised.
The content of this document corresponds to the described products and technologies.
Stated data may be modified or supplemented for technical and/or sales purposes.

MODULE LAYOUT

SIGNALS VIA LED ON FRONT PANEL

LED	STATUS	LED meaning
DO1	On	Output 01 activated
Off	Output 01 deactivated
DO2	On	Output 02 activated
Off	Output 02 deactivated
DI1	On	Input 01 activated
Off	Input 01 deactivated
DI2	On	Input 02 activated
Off	Input 02 deactivated
DATA LOGGER	ON	Data Logger function enabled
Flashing	LOG sending error
Off	Data Logger function disabled
STS (Only R-203-2)	On	Set IP address (powered module)
Flashing	Waiting for the IP address from the DHCP (powered module)

STS

(Only R-203-2-P)

| Off| No IP address set
On| IP address set
Flashing| Active Profinet communication
STS

(Only R-203-2-E)

TECHNICAL SPECIFICATIONS

ENVIRONMENTAL CONDITIONS

| Temperature: -25°C ÷ +65°C

Humidity: 30% ÷ 90% non condensing. Storage temperature: -30°C÷ + 85°C

Degree of protection: IP20

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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 ÷ 264Vac @ 50 ÷ 60Hz, max absorption: 2.5W / 4VA (only R203-2-H) Voltage: 10 ÷ 30Vdc, max absorption: 2.5W / 4VA (only R203-2-L)
COMMUNICATION PORTS| RS485: Baud rate: 1200 ÷ 115200 baud (for further information see the user manual). Ethernet ports 2 (model R203-2); 1 (model R203-1)
VOLTAGE INPUT| Voltage| Up to 600 Vac, frequency 45 ÷ 65Hz

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

ANALOGUE INPUT TA / TA (mV)

| Current input| Current input for TA: 1 ÷ 5A full scale.

Voltage input (mV) for TA with voltage or Rogowski output: up to 250 mV.

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

(100 mV/kA)

| 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: 2500A @50Hz, 2000A @60Hz

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

Linearity: ± 0.2 %

(*) Accuracy is guaranteed in the ranges: CosΦ > 0.5; Vrms: 40 ÷ 600 Vac; Irms: 5 – 100% Rogowski current (error due to external Rogowski sensors excluded). See the user manual for the error limits.

ANALOGUE OUTPUT

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

Current: 0 ÷ 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 bit, maximum speed: 50 Hz
INSTALLATION CATEGORY| Category ⅡI (up to 600 V) in a direct connection (only R203-2-H)

Category ⅡI (up to 300 V) in a direct connection (only R203-2-L)

CAUTION This is a Class A product. In a residential environment this equipment may cause radio interference.
In this case, the user may have to take adequate countermeasures.

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 on the ring points in the same direction as the current in the conductor
make sure the connections are made correctly
for a more precise measurement, the conductor wire 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) = 1.11
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.

DIP – SWITCH SETTINGS
The DIP-switch settings are read only at boot time. At each change, perform a restart.
For use and settings via DIP-SWITCH, see the user manual available on the website on the web page dedicated to the product.

ELECTRICAL CONNECTIONS

SUPPLY R203-2-H
The power supply is connected to terminals 40 and 41.
The supply voltage must be: 90 ÷ 264 Vac, 50 ÷ 60 Hz
It is advisable to insert a 1 A slow-blow fuse

SUPPLY R203-2- L
The power supply is connected to terminals 40 and 41. The supply voltage must be: 10 ÷ 30Vdc.
It is advisable to insert a 1 A slow-blow fuse

RS485
There is no isolation between RS485 and analogue output

ANALOGUE OUTPUT
The device provides a voltage output (0 ÷ 10 Vdc) or programmable active or passive current (0 ÷ 20 mA).
For the electrical connections, screened cables are recommended.
There is no isolation between RS485 and retransmitted output.
It is necessary to program the outputs to use them correctly.

DIGITAL OUTPUT
The device has two digital outputs.
Capacity: Imax = 50 mA Vmax = 28V. See the user manual for the functions.
*: Reversible polarity.

DIGITAL INPUT
The device is equipped with two digital inputs that can be activated with voltage from 12 to 24 V. See the user manual for the functions.
*: Reversible polarity.

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.
The earth connection of the secondary of CTs with current, voltage or rogowski output is possible on the negative terminal. In the case of rogowski sensors, the screen must always be connected to the negative terminal.
Current measurement is only possible using current transformers.
It is advisable to insert a slow-blow 1 A fuse as indicated in the diagrams below.

CONNECTIONS FOR ROGOWSKI SENSORS

CONNECTIONS FOR CURRENT OUTPUT TA

CONNECTIONS FOR ARON INSERTION

The same circuit diagram can be applied for connections of Rogowski sensors and CTs with mV outputs.

The Aron insertion link is usable from Firmware revision 1030 for model R203 and Firmware revision 1024 for model R203-P.
ATTENTION Grounding via terminal 43 is forbidden, otherwise the system to which the instrument is connected will be damaged.

TV CONNECTIONS

FACTORY IP ADDRESS
The default module IP address is static: 192. 168. 90. 101
In the R-203-X-P version, the module is supplied without an IP address (0.0.0).

WEB SERVER
To access the Web Server with the factory IP address above, use the following credentials:
Username: admin;
Password: admin

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

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

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.