PDD205A0121 PDD205A1121 ABB Servo amplifier control module

PDD205A0121 PDD205A1121 ABB Servo amplifier control module

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Indicator LEDs and operation indication messages

The operation of the relay can be monitored via the HMI by means of LED

indications and text messages on the LCD. On the front panel of the relay there are

three indicator LEDs with fixed functionality:

* Green indicator LED (ready)

* Yellow indicator LED (start/alarm)

* Red indicator LED (trip)

In addition, there are eight programmable LEDs and an indicator LED for front

communication. Refer to the Operator’s Manual for a more thorough presentation.

The indication messages on the LCD have a certain priority order. If different types

of indications are activated simultaneously, the message with the highest priority

appears on the LCD.

The relay provides three different kinds of demand values.

The first value shows the average voltage of all three phase-to-phase voltages

measured during one minute. The value is updated once a minute.

The second value shows the average voltage during an adjustable time range,

ranging from 0 to 999 minutes, with an accuracy of one minute. This value is

updated at the expiration of each time range.

The third value shows the highest one-minute average voltage value measured

during the previous time range. However, if the time range is set to zero, only the

one-minute and the maximum average voltage value is shown. The maximum value

is the highest one-minute mean value since the last reset.

The demand voltage values can be set to zero through serial communication using

SPA parameter V102. The average voltage values are also reset if SPA parameter

V105 is changed or the relay is reset.