Bender RCMA420, Руководство пользователя

Страница: 24 / 48

Operation and setting
24 RCMA420_D00059_04_M_XXEN/05.2021
5.6 Parameter settings
An example is given here on how to change the alarm response value I1 (I
Δn1
).
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 > 30 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.
5.6.1 Response value setting for overcurrent:
- Response value I2 (overcurrent I
Δn2
)
- Response value I1 (overcurrent I
Δn1
)
- Hysteresis (Hys) of the response values I
Δn1
, I
Δn2
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.