Datasheet
TDB301021en/06.2013 3
Network and system protection (NS protection) LINETRAXX® VMD460-NA
1 - Both alarm LEDs “AL1” and “AL2”: light when voltage and fre-
quency values are outside the thresholds.
2 - LED “ON” (green): lights up when voltage is available and
when the device is in operation or flashes in case of system
fault alarm (external watchdog).
3 - Backlit LC display
4 - “INFO” button
5 - The test button “TEST” is used to start a manual self test that
triggers both alarm relays (trigger test to check the coupling
switches). In addition, a fault is simulated to determine the
disconnection time.
Arrow up button: parameter change, scroll
6 - “RESET” button: to acknowledge alarm and fault messages
Arrow down button: parameter change, scroll
7 - “MENU” button: to toggle between the standard display,
menu and alarm display
1 - Supply voltage U
S
(see ordering information)
2 - Coupling to the grid
3 - Relay connections
4 - Contact monitoring coupling switch
(feedback signal contacts, optional
NC/NO/off)
NO (in non-operating
state open)
NC (in non-operating
state closed)
off (contact monitoring switched off)
5 - Remote trip input (NC/NO)
6 - RS-485 interface
7 - Activate or deactive the BMS bus ter-
minating resistor (120 Ω )
Operating elements
VMD460
V
LINETRAXX®
2
3
1
4
5
6
7
Wiring diagram VMD460 (VDE-AR-N-4105)
A1
L1
L2
L3
N
A2 L1 L2 L3
DG1/2
D2
D1
11 21
U
S
2412 22
VMD460
V
LINETRAXX®
A B RTGRT1D4D3
DG3/4
11
12
14
21
22
24
L3
L2
L1
D2
D1
DG1/2
D4
N
D3
RTG
RT1
DG3/4
14N
K1 K2
6 A
6 A
6 A6 A
6 A
coupling switches 1 coupling switches 2
power
generation
system
1
2
3
4
7
6
5