![background image](http://html1.mh-extra.com/html/vamp/221/221_operation-and-configuration-instructions-technical-description_3325850120.webp)
VAMP 221
Arc protection system
Technical description
VAMP Ltd
72
VAMP 24h Technical Support: +358 (0)20 753 3264
VM221.EN013
Trip alarms
A trip alarm is generated when the arc fault system trips.
Connect the trip alarm output to the closing terminals X1-15,
X1-16.
Connecting protective earthing
Connect the arc protection system to the earth using the PE
terminal in the back plate.
Wiring the auxiliary supply
Connect the auxiliary supply voltage to the Us input, terminals
X3-17 X3-18.
NOTE!
If possible, the auxiliary supply should be taken from a power
source that is not interrupted during arc protection system
operation.
CAUTION!
Keep the auxiliary supply disconnected during mounting.
7.2.2.
VAM 10L, VAM 3L, VAM 3LX, VAM 4C
The units are designed for mounting on a DIN rail. Mount the
units on the rail in such a way that the indicator lights on the
front panel are visible and the sensor wiring can be made as
easily as possible.
25,00 mm
92,00mm
M
VAM
157,00 mm
1
12,00mm
35 mm DIN
VAM_series_mittakuva
Figure 7-1 Dimensions and mounting of an I/O unit