· Product Introduction

SPD Switch Control Module is engineered based on a new-generation embedded system design. The module features an isolated communication interface, allowing it to communicate independently with a PC or PLC, or form networks with multiple communication modules. Additionally, the module is equipped with a transient suppression circuit that effectively mitigates various surge pulses, ensuring reliable operation in harsh environments.

SPD3-WA Series Serial I/O Control Module adopts the standard MODBUS-RTU protocol, facilitating seamless communication with host computers and enabling rapid network integration for building monitoring systems. With isolated output and communication interfaces, it is suitable for controlling various digital signals in industrial settings. The module meets the demanding requirements of industrial applications such as medical electronics, security monitoring, smart buildings, smart homes, power monitoring, and process control.

This product requires independent power supply and uses a DIN35mm standard rail mounting method. Field installation is simple, usage is flexible, and it can handle various field applications.

· Basic Parameters

Power Supply DC12～36V(DC24V recommended)

Power Consumption ＜3W

Control Interval ≥50mS

ESD Protection ±15KV

Isolation Voltage 1500VDC

Power Protection Reverse connection voltage< -40V

Dielectric Strength 1500 VAC / 1 minute(Power, Input, Output)

Insulation Resistance ≥100MΩ (Power, Input, Output)

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

Applicable Field Devices Devices supporting MODBUS-RTU protocol: Configuration software, PLC, HMI, PC, etc.

· Input Terminal

Number of Channels 8 channels

Input Type 24V Active Signal

Response Time ≤10mS

· Output Terminal

Number of Channels 4 channels

Output Type Relay

Response Time ≤20 mS

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

Load Type Resistive Load

· Output Terminal

Output Signal RS485/ Ethernet

Communication Protocol Standard MODBUS-RTU protocol

Communication Distance 1200m (RS485 typical)

· Environmental Conditions

Operating Temperature -40℃～+80℃

Storage Temperature -40℃～+85℃

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

Atmospheric Pressure 80kPa～106kPa