Fallback States, For Reflex | Schneider Electric 890USE17700

Advanced Configuration Features

Fallback States	Only an output module channel to which the result of a reflex action (See What Is a
for Reflex	Reflex Action?, p. 156) has been mapped can operate in the absence of the NIM’s
Functions	heartbeat message.
	When modules that provide input for reflex functionality fail or are removed from the
	island, the channels that hold the result of those reflex actions go into their fallback
	states.
	In most cases, an output module that has one of its channels dedicated to a reflex
	action will go to its configured fallback state if the module loses communication with
	the fieldbus master. The only exception is a two-channel digital output module that
	has both of its channels dedicated to reflex actions. In this case, the module may
	continue to solve logic after a loss of fieldbus communication. For more information
	about reflex actions, refer to the Reflex Actions Reference Guide (890 USE 183).

Configured	To define a customized fallback strategy for individual modules, you are required to
Fallback	use the Advantys configuration software. Configuration is done channel by channel.
	You can configure a single module’s multiple channels with different fallback
	parameters. Configured fallback parameters—implemented only during a
	communications failure—are part of the configuration file stored in the NIM’s non-
	volatile Flash memory.

Fallback	You can select either of two fallback modes when configuring output channels with
Parameters	the Advantys configuration software:
	hold last value—In this mode, outputs retain the last values they were assigned
	before the failure.
	predefined value—In this (default) mode, you can select either of two fallback
	values:
	0 (default)
	some value in acceptable range
	The permissible values for fallback parameters in the predefined value mode for
	discrete and analog modules and reflex functions appear in the following table:

	Module Type	Fallback Parameter Values

	discrete	0/off (default)

		1/on

	analog	0 (default)

		not 0 (in range of acceptable analog values)

Note: In an auto-configured system, default fallback parameters and values are always used.

162	890USE17700 April 2004

890USE17700 specifications

Schneider Electric has long been recognized as a leader in energy management and automation solutions, and one of its innovative offerings is the Schneider Electric 890USE17700. This product is part of the company's comprehensive portfolio aimed at enhancing energy efficiency and operational performance across various sectors.

The 890USE17700 is primarily designed for use in industrial applications, serving as an advanced device that can significantly contribute to smarter energy usage. One of its main features is its ability to optimize energy consumption through intelligent control systems. This is achieved through real-time monitoring and analysis, allowing users to identify inefficiencies and implement corrective actions swiftly.

Equipped with state-of-the-art technology, the 890USE17700 incorporates Schneider Electric's EcoStruxure™ platform, which leverages the Industrial Internet of Things (IIoT) principles. This platform allows for seamless connectivity of devices and systems, enabling users to collect valuable data that can drive decision-making processes. Moreover, the real-time analytics provided by this technology ensure that organizations can respond promptly to changing operational conditions.

Safety and reliability are other key characteristics of the 890USE17700. The device is built with robust safety features that comply with international standards, ensuring protection against electrical faults and other potential hazards. This not only enhances the operational reliability of industrial systems but also supports compliance with regulatory requirements.

The 890USE17700 also offers flexibility in deployment, allowing it to integrate with existing systems and infrastructure without significant modifications. Its user-friendly interface simplifies setup and programming, making it accessible for various levels of technical expertise. This ease of use encourages widespread adoption across diverse industrial environments.

In summary, the Schneider Electric 890USE17700 stands out as a premier solution for organizations aiming to enhance their energy efficiency and operational performance. Its integration with the EcoStruxure platform, focus on safety, and flexibility make it a compelling choice for modern industrial applications. As industries continue to evolve towards smarter and more sustainable practices, the 890USE17700 is poised to play a crucial role in this transformation.

Schneider Electric 890USE17700 manual Fallback States, For Reflex, Functions

Models: 890USE17700

Fallback States

for Reflex

Functions

heartbeat message.

states.

Configured

Fallback

Fallback

Module Type

Fallback Parameter Values

890USE17700 April 2004

890USE17700 specifications