RS-232 2-Channel Solid State Relay Controller

Solid State: A Practical Alternative to Mechanical Relays!

Mechanical Relays have a good home in low-cost control applications.  But for some users, only solid state switching will do.  Solid State Relays are ideal for users who require long term reliability, silent operation, or high induction tolerance.  Many inductive control applications require a solid state relay.  Inductive loads such as Motors, Valves, Pumps, Solenoids, and Large Transformers (including Fluorescent Lighting) benefit from the use of solid state relays because they reduce the chances of the inductive load interfering with the logic of the relay controller.

About Serial Communications

Our RS-232 Relay Boards are fully E3C complaint, allowing up to 256 NCD devices to share a single RS-232 serial port.  Mix and match up to 256 devices in any combination.  Speak to each device individually or all devices at once.  To control the this Relay Controller,  simply connect a data and ground wire between the Relay Controller and computer or microcontroller. Provide +12 Volts DC to the board, and send ASCII character codes to control the relays.  Even a no-frills design deserves a high-quality driver stage, and that’s exactly what we put on our Serial Relay Controllers.  Fast-reacting flyback diodes help shunt dangerous voltages away from the driver circuit.

Features include no-click startup, LED status lights, and E3C compliance.  Relays can be controlled at 9600 baud and the board is compatible with ANY computer or microcontroller capable of delivering RS-232 data.

Solid State Relays

Solid state relays are ideal for agricultural switching applications, or remotely located switching.  SSRs are frequently chosen to control pumps, valves, solenoids, lights, and other high-reliability applications.  NCD solid-state relay controllers do not include solid-state relays, but you will have the option to choose the type of solid state relays you require when customizing your product. This controller is designed specifically to fit select Crydom solid-state relays, but may be compatible other solid-state relays made by other companies.

Features

• 9600 Baud Operation
• Relay Status LEDs
• Quick Connect Terminal Blocks
• TTL RS-232 Inputs
• +12 Volt Operation, 2-Wire RS-232
• Isolated Solid State Relays
• No-Click Power-up
• 2-Way Communication Capable