Allen-Bradley 1440-SPD02-01RB XM-220 Dual Speed Module

Allen-Bradley 1440-SPD02-01RB XM-220 Dual Speed Module 

Description

The XM-220 Dual Speed module is a member of the Allen-Bradley™ XM® Series, a family of DIN rail mounted condition monitoring and protection modules that operate both in stand-alone applications or integrate with Programmable Logic Controllers (PLCs) and control system networks.

The XM-220 is a two channel module that accepts input from any two tachometers of any standard type including eddy current probes, magnetic pickups, optical tachometers, and TTL output devices. It measures speed, rotor acceleration, and peak speed and is capable of detecting zero speed, locked rotor, and reverse rotation conditions. It is also used as a component of the XM Electronic Overspeed Detection system.

The XM-220 can be configured (using the configuration software) to operate in three different modes. This controls how the sensors are used to calculate the speed, acceleration, and peak measurements.

• Dual Channel Mode - This is the default mode. The two sensors are used independently to perform two separate sets of speed, acceleration, and peak speed measurements.

• Single Redundant Channel Mode- One of the two sensors is used perform the speed, acceleration, and peak speed measurements. The module automatically switches to the other (redundant) sensor when a transducer or tachometer fault is detected on the current sensor.

• Reverse Rotation Mode - The two sensors are used to monitor speed and direction of a single shaft. The two sensors must be mounted out of phase from each other so that the rotational direction can be determined by monitoring which sensor the shaft keyway passes first.  

The module includes a single on-board relay (expandable to five), two 4-20mA outputs, and a buffered output for each input. A third buffered output is available when the module is functioning in the single redundant channel mode. This buffered output signal corresponds to the active input signal so that the machine speed can be accurately tracked regardless of which of the redundant sensors is active.

The XM-220 can operate stand-alone, or it can be deployed on a standard or dedicated DeviceNet network where it can provide real-time data and status information to other XM modules, PLCs, distributed control systems (DCS), and Condition Monitoring Systems.

The module can be configured remotely via the DeviceNet network, or locally using a serial connection to a PC or laptop. Refer to Chapter 3 for a list of the configuration parameters.  

Technical Specifications