CIAS Elettronica S.r.l.
Ed. 5.1
Installation Handbook
page
46
of
59
ERMO 482X
PRO
3.2
Equipment Connection to the Power Supply
Even if the equipment is Direct Current powered ( 13,8 V
)
,
they still operate properly, but it is
advisable to power it by Alternating Current ( 19 V
~ ) or (24
V
)
.
3.2.1 Connection to the Power Supply
The connection between the equipment and the transformer must be as short as possible (less
then 4 meters), and the section of the conductor must not be less than 1.5 mm².. The connection
between the transformer and the 230 V~ mains will be as that of the previous one.The power
supply cables connecting transformer with equipment, must be of shielded type with shield
connected to ground. The connection between unit and the power supply must be realised with
cables of correct section, the cables section must be computed keeping in account connection
length and unit current absorption. For the power supply connection (Alternating Current ) 19V
~
,
to make connect term 1/2 on the terminal strep MS2 of the Rx and Tx circuit.
The included
ferrite
shall be installed on the power input cable 19V
~
(2 turns)
The protection fuse is F2 is 2 A (T2A) slow-blow type
Use only safety
transformers
with the following characteristics:
primary voltage:
230 V~
secondary voltage
19 V~
minimum power
30 VA
Remark:
use only safety transformers (example Certified EN 60950)
Make sure to connect the body of the transformer to hearth tap.
The transformer connection to the main (230 V~), must be carried out through
one circuit breaker having the following characteristics:
bipolar with minimum distance between contacts equal to 3 mm
provided in the fix part of cabling
easily accessible
However laws and standards concerning installations of devices permanently connected
to the main (230 V
~
), must be strictly respected (in Italy Law 46/90 and standard CEI 64-8).
Remark:
if the barrier power supply is an external dc voltage (13,8V
), to avoid the activation
of the fault contact, due to ma
in missing for more than 3 hours, it’s necessary to
connect the positive incoming voltage (13,8V
), also to the terminal
1
or
2
of the
terminal block
MS2
either on transmitter and receiver PCB
3.2.2 Connection of stand-by Battery
Into each equipment heads there is the housing for an optional rechargeable back-up lead
Battery 12 V
– 1.9 Ah (optional). The battery is charged by the internal power supply, through
the red and black fastons and wires connected to the terminals 1 and 2 of the terminal block
MS1 of the Rx and Tx circuit. The provided protection fuse (against overload and/or battery
polarity inversion) F1 is 2A (T2A) slow-blow type The back-up lead battery allows to the barrier
head (TX or RX), at least 12 hours of perfect working, in case of mains missing.
Remark:
package, of the optional standby battery, must have a flame class equal or better than
HB ( UL 94 Standard ).
Summary of Contents for ERMO 482x PRO
Page 63: ...NOTE...
