Dual speed modules measure speed, rotor acceleration, and peak speed and can detect zero speed, locked rotor, and reverse rotation. In addition, these modules are components of Electronic Overspeed Detection Systems (EODS).
The XM® 220 Dual Speed Modules accept inputs from standard tachometers. These modules operate in dual-channel, single redundant channel, or reverse rotation mode to control how sensors calculate the speed, acceleration, and peak measurements. They can operate stand-alone or on DeviceNet™ networks to provide real-time data and status information to other XM modules, programmable controllers, distributed control systems, and condition monitoring systems.