Thytronic NA20, Manual, Page: 137 / 208

SETTING AND COMMISSIONING
137 NA20 - Manual - 04 - 2022
All changes in the setting parameters are carried out through MMI only if the Enable setting by MMI
parameter is ON. (ENABLE SETTING BY MMI submenu inside the SET menu).
To effect a change, having identified the parameter intended for change, the following procedure
must be performed:
• Select the parameter going through the menus by means the
Up
,
Down
and
Right
keys.
• Press the
Enter
button for a few seconds; the modification in progress status is highlighted by
flashing of the START and TRIP LEDs and by appearance of the pointer on the bottom.
• Move the cursor over the parameter intended for change using the Enter button,
• Change the parameter by means the Up (increment) or Down (decrement) buttons,
• Press the Enter button to move the cursor over the last parameter in the display,
• Press the Enter button once again; the cursor and the LED TRIP turn off (the LED START keeps
flashing),
• Press the Enter button for a few seconds; new message appears: “ Confirm settings? ”
• Answer to the message ENTER: YES to confirm changes or RESET: NO to abort.
The end of the START LED blinking points out the end of procedure; the changes become right now
active.
The abort command may be used to abandon changes (prior to use of the ENTER: YES ); the same
effect is achieved by removing the auxiliary power supply to the relay.
As example, to set the operating mode of the K1 output relay as ENERGIZED, LATCHED, the following
procedure must be issued:
• By means
Down
button select the Set menu “ SET >> ”,
• Press the
Right
button to enter; the following submenu title i displayed: “ BASE >> ”
• Scroll menus by means
Down
button
“ INPUTS >> ”
“ RELAYS >> ”
“ LEDS >> ”
“ SELF-TEST RELAY >> ”
“ MMI >> ”
“ PROFILE SELECTION >> ”
“ PROFILE A >> ”
“ PROFILE B >> ”
“ PLC >> ”
“ CIRCUIT BREAKER SUPERVISION 52 >> ”
“ CT SUPERVISION 74CT >> ”
“ REMOTE TRIPPING >> ”
“ PILOT WIRE DIAGNOSTIC >> ”
“ DEMAND MEASURES >> ”
• Select the Set menu “ RELAYS >> ”, the “ K1 relay Setpoints >> ” message is displayed,
• Press the Right button to enter; the following messages are displayed:
“ Logic DE-ENERGIZED Mode NO LATCHED ”
• Press the
Enter
button for a few seconds; the modification in progress status is highlighted by the
both START and TRIP flashing.
• Move the cursor over the parameter intended for change using the Enter button, (in our case on
the message “ Logic DE-ENERGIZED ”,
• Change the parameters by means the
Up
(increment) or
Down
(decrement) buttons, “ Logic EN -
ERGIZED ”,
• Press the Enter button to move the cursor over the last parameter in the display, “ Mode NO
LATCHED ”,
• Change the parameters by means the
Up
(increment) or
Down
(decrement) buttons, “ Mode
LATCHED ”,
• Press the Enter button once again; the cursor and the LED TRIP turn off (the LED START keeps
flashing),
• Press the
Enter
button for a few seconds; new message appears: “ Confirm settings? ”
• Answer to the message ENTER: YES to confirm changes or RESET: NO to abort.
The end of the LED blinking points out the end of procedure.