If the FLA secondary is set to 0.5, the maximum measured current is
25 x full load current of the motor.
The FLA secondary does not affect the ground-fault current, I
n
.
5.1.1.8. Disturbance recorder
The relay includes an internal disturbance recorder which records the instantaneous
measured values or the RMS curves of the measured signals, and up to eight user-
selectable digital signals: the digital input signals and the internal signals from the
protection elements. Any digital signal can be set to trigger the recorder on either the
falling or rising edge.
5.1.1.9. Front panel
The front panel of the relay contains:
*
Alphanumeric 2 × 16 characters’ LCD with backlight and automatic contrast
control
*
Threetarget LEDs (green, yellow, red) with fixed functionality
*
Eight programmable target 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 a target 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.
Entering the HMI setting or communication password successfully can
be selected to generate an event code. This feature can be used to
indicate interaction activities via the local HMI.
For further information on the HMI, refer to the Operator’s Manual.
22
REM 610REM 610
Motor Protection Relay
Technical Reference Manual - ANSI Version
1MRS755537
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