Allen Bradley 1756-RM2XT Extended‑Temperature Redundancy Module

FAQ

Q1: What is the purpose of this module?
It provides enhanced redundancy between two ControlLogix‑XT chassis, supervising state synchronization for high‑availability systems.

Q2: What type of communication does it use?
It uses fiber‑optic connections with LC connectors for high‑speed data exchange.

Q3: How many redundancy channels does it have?
It has two channels (one transmit and one receive).

Q4: What transmission speeds can it support?
The redundancy link supports up to 1000 Mbps (1 Gbps).

Q5: What are the operating temperature limits?
It is designed for extreme environments, operating from –25 °C to +70 °C.

Q6: Do I need two of these modules for redundancy?
Yes — one module is installed in each of the two redundant chassis to enable link supervision.

Q7: Can I install it in any chassis slot?
Yes — the module occupies one slot and can be placed anywhere in the chassis.

Q8: What physical size and weight does this module have?
It measures around 140 mm × 40 mm × 145 mm and weighs about 0.43 kg.

1756-RM2XT Allen Bradley

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