DO810 DO820 DO880-1 ABB Spot bargaining of analog module

DO810 DO820 DO880-1 ABB Spot bargaining of analog module

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The relay is provided with:

* Three power output contacts PO1, PO2 and PO3

* Two signal output contacts SO1 and SO2

* Three optional signal output contacts SO3, SO4 and SO5

Switchgroups SGR1...8 are used for routing internal signals from the protection

stages and the external trip signal to the wanted signal or power output contact. The

minimum pulse length can be configured to be 40 or 80 ms and the power output

contacts can be configured to be latched.

5.1.1.4. Disturbance recorder

The relay includes an internal disturbance recorder which records the momentary

measured values or the RMS curves of the measured signals, and up to eight userselectable digital signals: the digital input signals and the internal signals from the

protection stages. Any digital signal can be set to trigger the recorder on either the

falling or rising edge.

5.1.1.5. Front panel

The front panel of the relay contains:

* Alphanumeric 2 × 16 characters’ LCD with backlight and automatic contrast

control

* Threeindicator LEDs (green, yellow, red) with fixed functionality

* Eight programmable indicator LEDs (red)

* HMI push-button section with four arrow buttons and buttons for clear/cancel

and enter, used in navigating in the menu structure and in adjusting setting values

* Optically isolated serial communication port with an indicator LED.

There are two levels of HMI passwords; main HMI setting password for all settings

and HMI communication password for communication settings only.

The HMI passwords can be set to protect all user-changeable values from being

changed by an unauthorized person. Both the HMI setting password and the HMI

communication password remain inactive and are not required for altering parameter

values until the default HMI password is replaced.