Allen-Bradley 1440-RMA00-04RC Master Relay Module

Allen-Bradley 1440-RMA00-04RC (Model XM-440) is a master relay module from the Allen-Bradley XM series. It provides remote, shared, voting relay operation for distributed XM measurement modules.

The 1440-RMA00-04RC (XM-440) master relay module consists of two components: the XM-942 Master Relay Terminal Block Base Unit (Model 1440-TB-C) and the XM-440 Master Relay Module (Model 1440-RMA00-04RC). The base unit handles all field wiring terminal functions, while the module includes a processor, four onboard relays, and a serial interface for local configuration. It attaches to the base unit via a key switch and a 96-pin connector.

Function & Features

• Relay Outputs: The 1440-RMA00-04RC has four built-in high-power relays and can be connected to up to two XM-441 relay modules, increasing the total number of relays to a maximum of 12.

• "A out of B" Voting Logic: Each relay in the 1440-RMA00-04RC can be independently configured with unique "A out of B" voting logic (e.g., 2 out of 3, 1 out of 2, etc.).

• Trigger Event Linkage: When one or more relays are activated, the 1440-RMA00-04RC can send a "trigger event signal" to a group of XM measurement modules, prompting them to store "triggered trend data."

Specifications

XM Power Supply Requirements

XM Power Supply Output Characteristics

FAQ

Q: What is the brand?

A:Allen-Bradley

Q: What is the type?

A:Master Relay Module

Q: Does it support standalone use?

A:No, it must be used with the XM-942 base and requires external power supply.

Q: How to connect the expansion module?

A:Connect the expansion module through the reserved interface of the base (reference model 1440-EXxxx).

Q: Will the reset button affect the logic in operation?

A:Yes, resetting will clear all relay latch states. It is necessary to evaluate the process safety before operation.