Cooper Bussmann BU-905U-L Guía de instalación descargar pdf (Pagina 7)

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Cooper Bussmann BU-905U-L Wireless I/O Configuration Manual

Key Features

Feature Description For more information, see …

Mappings Lets you configure which inputs are sent to which outputs. Sending data to another station

Mappings can be triggered on a change of state (event reporting) using mappings on page 46.

or on a timed basis (periodic update). Outputs can be physical

outputs or Gateway registers.

Discrete signals Lets you monitor discrete (on or off) signals such as level

switches and alarms. The BU-905U-L-T has two discrete inputs.

The BU-905U-L-R has three discrete relay outputs

Analog signals Lets you monitor 4-20mA and 0-20mA current loop signals. Setting unit sensitivities

The BU-905U-L-T has one 0-20mA analog input. The BU-905U-L-R on page 52.

has one 0-20mA analog output

Millivolt signals Lets you measure millivolt signals (-10 – 100 mV) and thermocouple Working with thermocouple tables

(Thermocouple) signals with linearization for several different types of thermocouple on page 57 and Working with units

and cold junction compensation. on page 32.

The BU-905U-L-T has one millivolt input that you can use for

thermocouple input with or without cold junction compensation.

Pulsed signals Lets you count the number of times an input turns off and on, for Counting events by setting unit

example monitor pulses from a flow meter. pulsed inputs on page 53.

Setpoints Lets you control a remote digital output depending on the value of Setting setpoints on page 54.

an analogue input compared to user-configured setpoint values.

The BU-905U-L-T supports:

• Standard (fixed) setpoints; and

• Rotary setpoints – that determines threshold values using the

position of the rotary switch on the module.

System Status Lets you activate an alarm if the internal self-monitoring system BU-905U-L Installation Guide.

indicates a problem, or if the module loses power

Communication Status Lets you activate an alarm if the module hasn’t received any Handling communication failures

communication for a certain amount of time. by setting output reset times on

page 65.

Debounce Lets you set the amount of time an input needs to have differed

from its previous value before it is recognized as having changed.

This helps with noisy signals.

Sensitivities Lets you set the amount of change required of an input before the Setting unit sensitivities

BU-905U-L-T identifies the value as different from its previous value. on page 52.

Unit details Lets you create and update units and set unit-specific information. Working with units on page 32.

For more information, see the next sections.

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Cooper Bussmann BU-905U-L Guía de instalación Pagina 7