HESG447449R0001 70LR01A ABB Relay Module 

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 The 70LR01A module is designed to provide relay‑output functionality in ABB’s PROCONTROL P13 distributed control system (DCS) environment. It is used to activate

or switch external devices (alarms, trip circuits, external relays, etc.) based on logic or condition outputs from the control system.the

70LR01A family appears to have variants (2 NO, 4 NO) depending on how

many normally‑open (NO) contact outputs the

 module provides.

Q1: What is the main function of the 70LR01A module?
A1: The 70LR01A is a relay‑output module that provides normally open (NO) relay contacts as outputs from the DCS rack. It allows the system to drive external circuits

(alarms, trips, actuators) based on the logic/trip conditions in the control system.

Q2: What outputs does it provide (how many contacts)?
A2: Based on vendor listing: the standard 70LR01A is described as “2 NO” (two normally open contacts). A variant HESG447449R0002

 (also referencing 70LR01A) is described as “4 NO” (four normally open contacts). So you need

 to check exactly which variant you have (2‑contact vs 4‑contact).

Q3: What system is this module used with?
A3: It is used with ABB’s PROCONTROL P13 distributed control system

and I/O architecture. It plugs into the

P13 rack/backplane. 

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