SENECA R203 Energy Power Meters Installation Guide
- June 4, 2024
- SENECA
Table of Contents
INSTALLATION MANUAL
R203
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.
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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 center
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
| LED | STATUS | LED meaning |
|---|---|---|
| DO1 | On | Output 01 activated |
| Off | Output 01 deactivated | |
| D02 | On | Output 02 activated |
| Off | Output 02 deactivated | |
| DI1 | On | Input 01 activated |
| Off | Input 01 deactivated | |
| D12 | On | Input 02 activated |
| Off | Input 02 deactivated |
DATA
LOGGER| Flashing| Data Logger function enabled
ON| Data Logger function disabled
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|
**
***
(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 price. ()| 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 price. ()| 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’s current
– make sure that the connections are made correctly
– for 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).
For 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
| 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 delayed 1 A fuse
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| There is no isolation between RS485 and analog 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.
|
The device has two digital outputs.
Capacity: Imax = 50 mA Vmax = 28V.
See the user manual for the functions.
: Reversible polarity.
|
The device is equipped with two digital inputs that can be activated with a
voltage from 12 to 24 V.
See the user manual for the functions.
: Reversible polarity.
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 a 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.
CONNECTIONS FOR ROGOWSKI SENSORS
| SINGLE-PHASE (with load division) | THREE-PHASE: 4 wires |
|---|
| 
THREE-PHASE: 3 wires| **** CAUTION
|
CONNECTIONS FOR CURRENT OUTPUT TA
| SINGLE-PHASE (with load division) | THREE-PHASE: 4 wires |
|---|
| 
THREE-PHASE: 3 wires|
|
CONNECTIONS FOR VOLTAGE OUTPUT TA (mV)
| SINGLE-PHASE (with load division) | THREE-PHASE: 4 wires |
|---|
| 
THREE-PHASE: 3 wires|
|
TV CONNECTIONS
| SINGLE-PHASE (with load division) | THREE-PHASE: 4 wires |
|---|---|
| THREE-PHASE: 3 wires | |
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 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.
CONTACT INFORMATION
| Technical support | support@seneca.it |
|---|---|
| Product information | sales@seneca.it |
This document is the property of SENECA srl. Copies and reproduction are
prohibited unless authorized.
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.
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