SMT-CD-T20-V3 IMO iSmart Intelligent Relay – V3 24VDC, HMI, 12 DI, 4AI

Why Choose the IMO SMT-CD-T20-V3 iSmart Programmable Relay?

The IMO SMT-CD-T20-V3 is a versatile iSmart V3 programmable relay with integrated HMI designed for compact industrial automation, machine control and process applications. Combining programmable logic, digital and analogue I/O, transistor outputs and RS485 communications in a single unit, it provides a practical alternative to a conventional PLC for small and medium-sized control systems.

The SMT-CD-T20-V3 operates from a 24 V DC supply and provides 12 digital inputs, 4 analogue inputs and 8 transistor outputs. Its four analogue inputs support 0–10 V signals, while the transistor outputs are rated at 0.5 A. Two outputs can also provide PWM functionality at up to 0.5 kHz, supporting applications requiring pulse-width modulated control.

An integrated HMI display and keypad allow operators to view information and interact with the control programme directly from the relay. Built-in RS485 Modbus communications simplify integration with compatible industrial equipment, while expandable I/O and programmable functions including timers, counters, PID control and mathematical operations make the iSmart platform suitable for a broad range of automation tasks.

Key Advantages

• Compact programmable relay with integrated HMI for industrial automation.
• 24 V DC supply compatible with standard industrial control systems.
• 12 digital inputs and 4 analogue 0–10 V inputs provide flexible field signal connectivity.
• 8 transistor outputs rated at 0.5 A for fast electronic switching.
• Integrated RS485 Modbus communications for connection to compatible automation devices.
• Supports PWM outputs, PID control, timers, counters and mathematical functions.

Key Features

• IMO iSmart V3 programmable relay.
• Integrated HMI display and operating keys.
• 12 digital DC inputs.
• 4 analogue 0–10 V inputs.
• 8 × 0.5 A transistor outputs.
• 2 PWM outputs up to 0.5 kHz.
• RS485 Modbus communication.
• Programmable using Ladder or Function Block Diagram logic.
• Supports PID control with up to 30 loops.
• Mathematical functions and retentive data registers.
• Multi-language selectable interface.
• Expandable with compatible IMO iSmart I/O and communication modules.

Flexible Programmable Control for Industrial Machinery

Programmable relays combine PLC-style control functionality with a compact form factor suitable for machinery and control systems that do not require a large modular PLC. The IMO SMT-CD-T20-V3 provides digital and analogue signal processing, programmable logic and an integrated operator interface within one compact controller.

The combination of transistor outputs and PWM functionality makes this model particularly useful for applications requiring rapid electronic switching or pulse-width modulated signals. RS485 Modbus connectivity allows the controller to exchange data with compatible drives, HMIs, instrumentation and other automation equipment, while expansion modules can be added where additional I/O is required.

Typical Applications

• Industrial machine automation and control.
• Conveyor and material handling systems.
• Pumps, fans and ventilation equipment.
• Packaging and production machinery.
• Building services and HVAC automation.
• Lighting and energy control systems.
• Small process control applications.
• OEM equipment and standalone control panels.