· Product Introduction

The SPD digital control module is meticulously designed based on a new generation of embedded systems. Equipped with an isolated communication interface, it can communicate independently with a PC or PLC, or networked with multiple communication modules. It also features a transient suppression circuit that effectively suppresses various surges, ensuring reliable operation in harsh environments.

The SPD2-WA series relay output control module controls 4/8 relay outputs and features an RS485 communication interface using the standard MODBUS-RTU protocol, facilitating communication with a host computer. This allows for rapid networking and monitoring system construction. With isolated output and communication interfaces, it is suitable for controlling a variety of digital signals in industrial settings, meeting demanding measurement requirements in industrial fields, medical electronics, security monitoring, smart buildings, smart homes, power monitoring, and process control.

This product requires an independent power supply and utilizes a standard 35mm DIN rail for mounting, offering simple installation and flexible use, adapting to a variety of field applications.

· Basic Parameters

Power Supply DC12～36V(DC24V recommended)

Power Consumption <3.0W

Control Interval ≥50mS

ESD Protection ±15kV

Isolation Voltage 1500VDC

Power Supply Protection Reverse Polarity Voltage <-40V

Dielectric Strength 1500VAC/1 minute (input, output)

Insulation Resistance ≥100MΩ (input, output)

Electromagnetic Compatibility Complies with GB/T18268.1 (IEC61326-1)

Applicable Field Devices Configuration software, PLCs, touch screens, computers, and other devices supporting the MODBUS-RTU protocol

· Outputs

Number of Channels 4/8 channels

Output Type Relay

Response Time ≤20mS

Drive Capacity 10A@250VAC; 10A@28VDC

Driven Load Resistive load

· Output Terminal

Output Signal RS-485/ Ethernet

Communication Protocol Standard MODBUS-RTU protocol

Communication Distance 1200m (RS-485 typical)

· Environmental Conditions

Operating Temperature -40℃～+80℃

Storage Temperature -40℃～+85℃

Relative Humidity 10%～90%RH (non-condensing)

Atmospheric Pressure 80kPa～106kPa