SMT-BD-R20-V3 IMO iSmart Intelligent Relay – V3 24VDC, Blind, 12 DI, 4AI

Why Choose the IMO SMT-BD-R20-V3 iSmart Intelligent Relay?

The IMO SMT-BD-R20-V3 is a compact 24 V DC iSmart V3 intelligent relay designed for industrial automation, machinery and control panel applications. It combines programmable control logic with a substantial onboard I/O capacity, providing 12 DC digital inputs and 8 relay outputs in a compact blind base unit.

As part of the IMO iSmart V3 programmable relay series, the SMT-BD-R20-V3 includes 4 configurable 0–10 V analogue inputs within its DC input configuration. This enables the controller to work with both conventional switching signals and variable analogue signals from compatible sensors and transmitters, making it suitable for applications requiring monitoring as well as sequencing and control.

The SMT-BD-R20-V3 operates from a 24 V DC supply and provides 8 relay outputs rated up to 8 A. It supports both Ladder Logic and Function Block Diagram programming and includes 2 high-speed inputs capable of operation up to 1 kHz. As a blind model without an integrated display, it is particularly suited to enclosed control panels where local HMI operation is unnecessary.

Key Advantages

• Compact 24 V DC programmable intelligent relay for machine and process automation.
• 12 DC digital inputs provide substantial onboard signal capacity.
• Includes 4 configurable 0–10 V analogue inputs for variable sensor signals.
• 8 relay outputs rated up to 8 A for versatile load switching.
• 2 high-speed inputs up to 1 kHz for compatible pulse and counting applications.
• Supports both Ladder Logic and Function Block Diagram (FBD) programming.
• PID, maths, timer, counter and retentive data functions support sophisticated control applications.
• Expandable using compatible IMO iSmart digital, analogue, temperature and communication modules.

Key Features

• IMO iSmart V3 intelligent relay.
• 24 V DC operating supply.
• 12 DC digital inputs.
• 4 configurable 0–10 V analogue inputs within the input configuration.
• 12-bit analogue input resolution.
• 8 relay outputs.
• 8 A relay output rating.
• 2 high-speed inputs up to 1 kHz.
• Ladder Logic programming.
• Function Block Diagram (FBD) programming.
• PID control capability.
• Maths functions and retentive data registers.
• Expandable with compatible IMO iSmart expansion modules.
• Blind model without integrated HMI display or function keys.

Flexible Digital and Analogue Control for Compact Automation

The IMO SMT-BD-R20-V3 combines digital control and analogue monitoring within a single compact programmable relay. Its 12 DC inputs provide ample capacity for switches, proximity sensors and other discrete devices, while four inputs can accommodate 0–10 V DC analogue signals. This allows variables such as pressure, level, position or other process measurements to be incorporated directly into the control program when suitable transmitters are used.

With eight relay outputs, high-speed input capability and support for Ladder and FBD programming, the SMT-BD-R20-V3 can replace numerous individual relays, timers and counters in suitable applications. Compatible iSmart expansion modules can also be added when a system requires additional digital I/O, analogue signals, PT100 temperature measurement or other expansion functions.

Typical Applications

• Industrial machine automation.
• Pump, fan and motor control systems.
• 0–10 V sensor monitoring and control.
• Conveyor and material handling equipment.
• HVAC and building automation.
• Packaging and production machinery.
• Sequencing, timing and counting applications.
• OEM machinery and electrical control panels.