Bender LINETRAXX MRCDB423 Manual - Page 11

Browse online or download pdf Manual for Control Unit Bender LINETRAXX MRCDB423. Bender LINETRAXX MRCDB423 20 pages. Modular residual current device type b for additional protection (protection against indirect contact) in earthed systems (tn and tt systems)

Print Page
Bender LINETRAXX MRCDB423 Manual
5

Operation and settings

5.1

Function of the operating elements

Device front
AL1
AL2
5.2

Display elements

The display elements are shown for one second when a device test is started. The following table
lists the elements that are linked to functions.
>
>
t
on
off
5.3

Meaning of the LEDs

Meaning
Error message (system error)
Prewarning
Message, Test I
Residual operating current I
Element
ON (green)
I
∆n
AL1
AL2
13 mA
MENU
(< 1s)
(> 2 s)
Rl
.
s
k
m
A
H
M
y s
1 or
Δn
2 reached
Δn
Function
lights continuously: Power On LED,
flashes: system fault or malfunction of connec-
tion monitoring
Alarm LED lights (yellow): response value I
LED TRIP lights (yellow): response value I
13 mA flow through the measuring current
transformer,
M
fault memory active
Standard display: (> 2 s): display test, self test
T
Menu display: arrow-up button (< 1 s)
Standard display: Reset button; (> 2 s): Clearing
R
the fault memory
menu display: arrow-down button (< 1 s)
Standard display:
Menu display: Enter button
• Confirm menu item, submenu item and value.
• Back to the next higher menu level
Element
Function
Response value I
I2
Response value I
I1
Response delay t
ton1
Response delay t
ton2
Fault memory active
M
Password protection enabled
ON
MRCDB423_D00396_01_M_XXEN/06.2021
LINETRAXX® MRCDB423
in mA
Δn2
in % of I
Δn1
(K1)
on1
(K2)
on2
AL1
AL2
Δn1
Δn2
Δn2
11