Controller 2 lines: 22 I (2 universal), 12 O relay. M91-2-R34

Unitronics M91-2-R34 Programmable Controller – a compact solution for automation

The M91-2-R34 controller is a versatile device designed for the automation of industrial and building processes. Its compact design combined with flexible configuration makes it perfect for both simple and more complex control systems. This model offers 22 inputs (including 2 universal inputs) and 12 relay outputs, allowing it to support a wide range of devices and sensors.

Functionality and capabilities

The Unitronics M91-2-R34 controller features a built-in HMI operator panel with an LCD display with a resolution of 2 lines of 16 characters. This allows for direct monitoring and control of the process without the need for additional interfaces. The built-in RS-232 communication port provides easy integration with other devices and systems, and can optionally be expanded with a CAN bus. The controller is compatible with additional input/output modules, allowing it to be adapted to specific application needs.

Construction and mounting

The controller housing is designed for easy mounting on a 35mm DIN rail. The dimensions of the device (96 mm x 96 mm x 64 mm) allow for installation in a limited space. The top connections are used to connect power and input signals, while the bottom connections are used for outputs. Signal wires should have a cross-section from 0.13 mm² to 3.31 mm² (26 – 12 AWG). The robust construction ensures reliable operation even in harsh industrial conditions.

Key features:

• Versatility: 22 inputs (including 2 universal) and 12 relay outputs provide configuration flexibility.
• Built-in HMI panel: Enables direct monitoring and control of the process.
• Communication: RS-232 port enables integration with other devices.
• Expandability: Possibility to connect additional input/output modules.
• Mounting: Easy mounting on a 35mm DIN rail.
• Reliability: Robust construction adapted for operation in industrial conditions.
• Memory: Full memory retention ensures configuration is maintained even after power is disconnected.

The supply voltage is 24 VDC in the range of 20.4 to 28.8VDC, and the maximum current consumption is 140 mA with a typical power of 3.2 W. The controller has 22 binary inputs (including 2 universal inputs) and 12 relay outputs. It is equipped with an LCD display with a resolution of 2 lines of 16 characters and an RS-232 communication port. The weight of the device is approximately 280 g.

The M91-2-R34 controller is a solid and reliable solution for a wide range of applications in industrial and building automation, ideal for both professional installers and end-users looking for an effective control system.