WaveShare Industrial Modbus RTU 8CH Relay Module (D) with Digital Input and RS485 Interface

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WaveShare Industrial Modbus RTU 8CH Relay Module (D) with Digital Input and RS485 Interface

SKU: WS26517

4.0 / 1 review

41,95 €

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incl. 19% VAT plus

Net: 35,25 €

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Goods ordered. 7 pcs expected on 01.04.2025.

Delivery time: 10 - 12 Workdays (DE - int. shipments may differ)

Product Information

Product safety information

Manufacturer information:

Waveshare International Limited
World Trade Plaza south side, Fuhong Rd, Futian District
Shenzhen, China, 518000
[email protected]
https://waveshare.com/

Responsible person:

Eckstein GmbH
Am Ostbahnhof 3
Niedersachsen
Clausthal-Zellerfeld, Deutschland, 38678
[email protected]
https://eckstein-shop.de

Dimensions and Weight
GTIN:	4060137091711
HAN:	26517
Category:	Relay
Storage Tiers:	Tier3
Shipping weight:	0,36 kg
Item weight:	0,30 kg
Dimensions ( Length × Width × Height ):	17,50 × 9,00 × 4,00 cm

Product Description

This is an industrial 8-ch relay module controlled via RS485 bus, with 8-ch digital input, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, magnetical isolation, and TVS diode, etc. It also comes with an ABS enclosure. The Modbus RTU Relay (D) is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipments and/or applications with high communication requirement.

Configurable device address (1~255), multi devices can be cascaded on RS485 bus
Features flash-on, flash-off function, by passing argument to the command, it is possible to turn on the relay for a while and then close it automatically
Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
Onboard resettable fuse and TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, provides over-current/over-voltage proof, lightningproof & anti-electrostatic
Onboard Optocoupler isolation, prevent the relay from being interfered by high-voltage circuit
Adopts dedicated relay driver chip, with built-in flyback diode protection, for stronger and more stable driving ability
Supports passive and active digital input, with bi-directional optocoupler isolation, built in debouncing algorithm. The relay supports digital input linkage control or toggle control
Reverse-proof circuit, prevent the circuit from being damaged accidentally by incorrect connection
High quality relay, contact rating: ?10A 250VAC/30VDC
Rail-mounted ABS plastic enclosure, easy to install, safe to use
Multiple LEDs for indicating the MCU status and signal transceiving status

Specifications

Power supply: 7~36V
Communication interface: RS485
Baudrate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
Default communication format: 9600, N, 8, 1
Relay channels: 8
Contact form: 1NO 1NC
contact rating: ?10A 250VAC/30VDC
Digital input: 8DI, 5~36V, passive / active input (NPN or PNP), built-in bi-directional optocoupler isolation
Communication protocol: Standard Modbus RTU protocol
RS485 address: 1~255 LED
indicators
- STA: MCU indicator, keeps flashing when the MCU normally working
- TxD: Tx indicator, lights up when sending data
- RxD: Rx indicator, lights up when receiving data

Primary function

Supports reading digital input by sending Modbus RTU protocol commands via RS485 for relay output control

Hardware Analysis

Multiple protections for safer and more reliable use

Digital Input

Supports passive (dry contact) and active (wet contact) digital input, with bi-directional optocoupler isolation

Interfaces & Indicators

With Multiple LED Indicators, Easy To Monitor The Operating Status

Multiple modes for various automation scenarios

Supports multiple relay control modes, each channel supports independent control mode setting

RS485 Communication

Configurable device address (1~255), multi devices can be cascaded on RS485 bus

In case of many devices are cascaded, or communication distance is quite long, it is necessary to use RS485 repeaters

Relay connection

Contact rating of the onboard relay up to 10A 250VAC/30VDC Directly controlling 220VAC home appliances, or devices below 30VDC

Enclosure Design

Rail-mounted ABS plastic enclosure, easy to install, safe to use

WIKI:www.waveshare.com/wiki/Modbus_RTU_Relay_(D)

Lieferumfang

The power supply of this product is not included, it is recommended to purchase 12V power supply if you need it.

It is also recommended to purchase USB TO RS232/485/TTLorUSB TO RS485 at the same time for easy testing.

Modbus RTU Relay (D) x1
Screwdriver x1

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Total entries: 1

07.01.2025 Verified purchase

Schickes, robustes Ghäuse sehr gut verarbeitet

Ich habe für meine Solaranlage extra das etwas hochwertigere und damit auch teurere 8-Kanal Relaismodul von WaveShare ausgewählt. Mit der Anleitung im Wiki kann man das Modul problemlos in Betrieb nehmen. Die Kommandos in den Beispielen funktionieren ausnahmslos, wie beschrieben.
Nun bin ich dabei einen Modbus Treiber zu schreiben, der die Node-Red Ausgänge per Modbus an das Modul überträgt. Dabei hat sich gezeigt, das es doch eine Kleinigkeit zu bemängeln gibt:
Das Modul ist nach einem Power-On Reset nicht automatisch im selben Zustand. Das macht eine Initialisierungssquenz im Treiber notwendig. Der RelaisStatus wird gespeichert und wenn er zuletzt auf Linked gestellt war, lassen sich die Relais nicht direkt schalten. Der Status aller Relais muss dafür immer auf Normal stehen.

Thomas M

Wiki

Manufacturer according to GPSR
Waveshare International Limited, World Trade Plaza south side, Fuhong Rd, Futian District, 518000 Shenzhen, China, [email protected], https://waveshare.com/
Responsible person according to GPSR
Eckstein GmbH, Am Ostbahnhof 3, 38678 Clausthal-Zellerfeld, Niedersachsen, Deutschland, [email protected], https://eckstein-shop.de

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WaveShare Industrial Modbus RTU 8CH Relay Module (D) with Digital Input and RS485 Interface

Dimensions and Weight

Schickes, robustes Ghäuse sehr gut verarbeitet

Wiki

WaveShare Industrial Modbus RTU 8CH Relay Module (D) with Digital Input and RS485 Interface

Service package

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