Allen-Bradley 1440-RMA00-04RC Master Relay Module
Overview
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
|
Requirement Type |
Details |
| Model | 1440-RMA00-04RC |
|
Power Source |
Listed Class 2 rated supply, or |
| Output Power |
100 Watts Maximum |
| Ripple | < 100mVpp |
XM Power Supply Output Characteristics
|
Characteristic |
Details |
|
Static Regulation |
± 2% |
|
Dynamic Regulation |
± 3% |
|
Ripple |
< 100mVpp (millivolts peak-to-peak) |
|
Output Noise |
Per EN50081-1 |
Questions & Answers
💡 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.
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