Relay Modules

Our Bulletin 1440 XM® 440, 441, and 442 Relay Modules are components of the Electronic Overspeed Detection System (EODS). Three relays act as redundant shutdown relays, and a fourth relay provides alarm annunciation. Overspeed alarm inputs come from three independently connected XM-220 Dual Speed Modules, and the module requires no configuration.

Features

XM-440 Master Relay Module

• Includes XM® bus masters that support remote, shared, and voted relay operation for distributed XM measurement modules
• Communicates via DeviceNet™ network
• Includes four relays, expandable to twelve: four integral relays and EITHER eight virtual relays OR four or eight additional physical relays when connected to one or two XM-441 Expansion Relay modules
• Sends trigger events to XM measurement modules when one or more relays are activated, causing the XM measurement modules to save their collected triggered trend data

XM-441 Expansion Relay Module

• Expands the number of physical relays available to a host module
• Must be directly connected, via the side connector, to the right of any XM® measurement of XM-440 Master Relay Module
• Includes four high power relays

XM-442 EODS Relay Module

• Provides relay component of Electronic Overspeed Detection Systems (EODS)
• Includes three independent, shutdown relays
• Includes one alarm relay
• Offers overspeed alarm inputs received from three independently connected XM® 220 Dual Speed Modules