he Allen-Bradley 1440-SPD02-01RB Dual-Speed Module, also known as the XM-220, is a component of Rockwell Automation’s XM Series designed to measure speed, rotor acceleration, and peak speed, as well as detect zero speed, locked rotor, and reverse rotation conditions. It is also a key element in Electronic Overspeed Detection Systems (EODS).| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Product Type | Dual-Speed Module |
| Part Number | 1440-SPD02-01RB |
| Inputs | Two speed inputs; one tachometer input |
| Voltage Ranges | Input: 24V DC, 0.3A; Relay Output: 120V AC, 0.5A; 110V DC, 0.5A; 30V DC, 1A |
| Communication Types | DeviceNet, RS-232 |
| Field Power | 24V DC, 0.3A |
| Status Indicator | Module Status, Network Status, Channel Status |
| Input Power | 24V DC, 0.3A |
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The Allen-Bradley 1440-SPD02-01RB Dual-Speed Module (XM-220) is engineered to monitor critical speed-related parameters in rotating machinery. It features two speed inputs and a tachometer input, enabling precise measurement of speed, rotor acceleration, and peak speed. The module is also capable of detecting zero speed, locked rotor, and reverse rotation conditions, making it essential for machinery protection and performance optimization.
Operating on a 24V DC power supply with a current draw of 0.3A, the XM-220 module provides relay outputs rated at 120V AC (0.5A), 110V DC (0.5A), and 30V DC (1A), facilitating integration with various control systems. Communication is supported via DeviceNet and RS-232 interfaces, allowing seamless connectivity with programmable logic controllers (PLCs), distributed control systems (DCS), and other XM modules.
The module is equipped with status indicators for Module Status, Network Status, and Channel Status, providing real-time visual feedback on operational conditions. Its compact design and robust functionality make it suitable for a wide range of industrial applications, including turbines, motors, pumps, and compressors. By delivering accurate speed monitoring and protection features, the XM-220 module contributes to enhanced operational efficiency and reduced downtime in critical machinery systems.