ted, and the START circuit has
been activated, as described in
this user manual.
A
UXILIARY OUTPUT
An auxilary NC voltage free relay
output is available between the 41-
42 terminals. It must be used only
for signalling functions and not for
safety functions.
OPERATING MODE
With manual START configuration,
the safety outputs close, if the swit-
ches connected to S11 & S22 are
operated, when the NO START
pushbutton is pushed. With auto-
matic START configuration, the
safety outputs close as soon as
both the switches connected to
S11 & S22 are operated. The CH1
& ChH2 LED turn on.
Releasing even one input contact
(S11 and/or S22) forces immedia-
tely the safety outputs to an open
status. The LED relative to the
channel whose input has been
released turns off.
A new operating cycle is possible
only after releasing both input con-
tacts and then operating them
again (and pushing the START
button, if the safety module has
been set up with manual START
configuration).
For the “SC” and “DC” models it is
necessary a minimum delay of 500
ms from the operated status of the
input contacts to the pushing of the
START button. The same delay is
necessary between the START
button releasing and re-operating,
if the input terminals have been
previously operated with the
START button already pushed.
In the models with monitored
manual START configuration, if the
NO START button gets welded, the
safety outputs cannot close their
contacts any more.
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 avoiding
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 devi-
ces connected to the inputs and to
the outputs of the safety module.
Check also the correct wiring of all
the devices.
STEP 2
Power on the safety
module: the
POWER
LED turns on
(this LED has to be considered ON
in all the steps of this sequence).
The
CH1
and
CH2
are off.
Operate the input contacts: the
safety outputs are open and the
CH1
&
CH2
are off (if the module is
configured for automatic START,
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