1. INTRODUCTION
This user manual must be read
and completely understood, prior
to carrying out any operation on
the module, by personnel dealing
with all the activities of the
NA12D
safety module. The instructions
refer to the models configured
either for controlled manual
START or for not-controlled manu-
al/automatic START.
All the operations described in this
manual must be carried out exclu-
sively by specialised personnel by
carefully following all the indica-
tions given.
The user decides under his com-
plete resposability that the safety
module is suited for the application.
2. FUNCTION
The safety module
NA12D
can be
employed in safety circuits to con-
trol E-STOP pushbutton and limit
switch devices, according to
98/37/CE Machinery Directive.
3. INSTALLATION
3.1 Warning
• The
NA12D
safety module must
be installed following the stan-
dards in force in the country of
use, when the machine is not
powered and with no dangers for
the operator, on the machine’s
electrical board in a dry and
clean place (minimum protection
degree: IP54), fixed on the spe-
cial DIN rail.
• If the safety module is tampered,
it can not ensure the safety of the
operator any more and the war-
ranty is void.
• To avoid interference due to cou-
pling, run the limit switches con-
necting conductors separately
from the power conductors.
• Avoid installation during storms.
• Do not dispose of the packaging
in the environment.
3.2 Wiring
It is recommended to use conduc-
tors with section and length ade-
quate to the terminals, currents
and distances involved, ensuring
that the conductors are not exces-
sively tight, that their positioning
avoids potential cuts or squashing
and that they are not in the way of
people or things.
3.3 Power supply
Connect the A1 and A2 terminals
to the power supply source.
3
TERM.
CONNECTION
A1
+24VDC / 24VAC
A2
GND / 24 VAC
S11-S12
S21-S22 N.O. Input channels
X-1-X2
Feedback loop and START
terminals
13-14
23-24
N.O. Safety outputs
Tab. 1: Terminal description
