4. OPERATING MODE
With manual START configuration,
the safety outputs close, if S1 & S2
are operated, when the N.O.
START pushbutton is pushed. With
Automatic START configuration,
the safety outputs close as soon as
both S1 & S2 switches are operat-
ed. The Channel 1 & Channel 2
LED turn on.
Opening even one input contact
(S1 and/or S2) leads to a safety
condition for the operator, forcing
immediately the safety outputs to
an open status. The LED relative
to the channel whose input has
been opened turns off.
A new operating cycle is possible
only after opening both input con-
tacts and then closing them (and
pushing the START button, if the
safety module has been set up
with Manual START configuration).
In the model with monitored manu-
al START set up, if the N.O.
START button gets welded, the
safety outputs cannot close their
contacts any more.
5. TEST & ACTIVATION
The following operations must be
repeated when the module is
installed and every time the wiring
is changed and at regular intervals
by carrying out
in sequence all
the
steps described below without any
type of dangerous condition for the
operators.
STEP 1
Check the integrity, the
correct installation, the correct
positioning on the machine and the
correct functioning of all the
devices connected to the inputs
and to the outputs of the
NA12D
safety module. Check also the cor-
rect wiring of all the devices (See
3.2).
STEP 2
Power on the safety mod-
ule: the
POWER
LED turns on (this
LED has to be considered ON in all
the steps of this sequence). The
CHANNEL1
and
CHANNEL2
are
off.
Close the input contacts: the safe-
ty outputs are open and the
CHANNEL1
&
CHANNEL2
are off
(if the module is configured for
automatic START,
CHANNEL1
&
CHANNEL2
turns on and the safe-
ty outputs close).
Close the START contact: the
safety outputs close and the
CHANNEL1
,
CHANNEL2
LED
turn on.
STEP 3
Open both input contacts:
the safety outputs open and the
CHANNEL1
,
CHANNEL2
LED
turn off.
During STEP 2 check that the
safety outputs do not close - with
manual START configuration - sim-
ply closing both input contacts,
without closing the START push-
button.
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