Omega Vehicle Security DRF-RES Series - Manual (Page 10)

Page 10
User’s Manual Series DRF
INSTALLATION
PRECAUTIONS.-
The installation and the
future use of this unit must
be done by qualified
personnel. The unit has not
AC (mains) switch, neither
internal protection fuse. It will be in operation
as soon as power is connected. The
installation must incorporate an external
mains switch with a protection fuse and also
the necessary devices to protect the operator
and the process when using the unit to a
control machine or process where injury to
personnel or damage to equipment or
process may occur as a result of failure of
the unit.
RECOMMENDED FUSES
24Vdc
230Vac 115Vac
250mA 70mA 100mA
Time-lag Time-lag Time-lag
SAFETY PRESCRIPTIONS.- The unit has
been designed and tested under
EN-61010-1 rules and is
delivered in good conditions.
This User’s Manual contains
useful information the user has to respect in
order to warrant a proper function of the unit,
and good security conditions. The unit is
designed for internal applications, with
good ventilation to avoid excessive heating.
It can occasionally be applied to
temperatures down to 10ºC or up to 70ºC
without security degradation. Do all
connections before applying power to the
unit. Do not make wiring changes until
power is disconnected from the unit.
Install the unit far from elements generating
electric noise, or magnetic fields, such as
power relays, electrical engines, speed
regulators, etc. Do not use until installation
is completed.
POWER SUPPLY.- The power supply must
be connected to the adequate terminals 1,
2 and 3. The characteristics of the power
supply are shown on the side label. Please
make sure that the unit is correctly
connected to a power supply of the correct
voltage and frequency. Do not connect the
unit to lines which are overloaded or which
provide power to systems working on ON-
OFF cycles or inductive loads.
ATTENTION
For instruments which are DC powered,
respect the polarity of the power terminals
as indicated on this user’s manual, and on
the instrument itself.
SIGNAL WIRING .- Certain considerations
must be given when installing the signal
input wires. If the wires are long, they can act
as an antenna introducing electrical noise
into the unit. Therefore :
- Do not install the signal input wires in
the same conduit with power lines, heaters,
solenoids, SCR controls, etc ... and always
far from these elements.
- When shielded wires are used, leave
unconnected the shield on the transmitter
side and connect the other end of the shield
to the ground terminal of the machine.
EXCITATION VOLTAGE
Model DRF-PR incorporates an internal
power supply for transducers. The output of
this power supply is connected to terminals
7 and 9. Do not connect these terminals to
an external power supply, beacuse both
units will be permantently damaged.
8-CAUTIONS, WARNINGS AND NOTES