Operation and setting
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RCMA423AS_D00157_01_M_XXEN/08.2016
Parameter settings
An example is given here on how to change the alarm response value I1 (
I
Δ
n1
).
It is presumed that the option overcurrent (HI) has been selected in the SEt/I
12 menu (factory setting). Proceed as follows:
1. Press the MENU/Enter key for more than 1.5 seconds. The flashing short
symbol AL appears on the display.
2. Confirm with Enter. The parameter response value > I2 flashes, in addi-
tion the associated overcurrent value > 100 mA appears.
3. Use the Down key to select the parameter response value I1. The para-
meter I1 flashes, in addition the associated percentage value for
prewarning 50 % of I2 appears.
4. Confirm with Enter. The current value for prewarning appears on the
flashing display.
5. Use the Up or Down key to set the appropriate prewarning value. Con-
firm with Enter. I1 flashes.
6. You can exit the menu by:
– pressing the Enter key for more than 1.5 seconds to reach the next
higher level or
– selecting the menu item ESC and confirming with Enter to reach the
next higher level.
5.5.2
Changeover from overcurrent to undercurrent mode or to
window mode
The operating mode can be changed in the SEt/I 12 menu using the parame-
ters HI, Lo and In. By default, overcurrent operation (HI) is set. Refer to page 35
for a detailed description on how to change over to the window mode.
The currently active segments are flashing! In the figures
below, the segments where device settings can be carried out
are highlighted by an oval. The menu mode can be reached
by pressing the MENU key for more than 1.5 seconds.
