CARLO GAVAZZI NLG02D Series, Руководство пользователя

Страница: 12 / 24

12
(PNP-type or relay-type) : con-
nect one output to the S12 ter-
minal and the other to the S21
terminal, leaving S11 and S22
terminals not connected (fig . 3,
4 max . Safety cat . 4, PL:e) .
-
ESPE with one one-wire output
(PNP-type or relay-type)
: con-
nect the output to the S12 ter-
minal; short-circuit the terminals
S12 with S21, leaving S11 and
S22 not connected (fig . 5, 6,
max safety cat . 2, PL:c) .
- ESPE with two PNP two-wires
outputs (e .g . optocoupled
PNP-type) : connect both emit-
ter outputs to the S22 terminal
and the collector outputs to the
S12 and S21 terminal, leaving
S11 not connected (fig . 7, max .
Safety cat . 4, PL:e) .
-
ESPE with two relay two-wires
outputs : connect one wire of
each output channel to the S22
terminal and the other outputs
to the S12 and S21 terminal,
leaving S11 not connected (fig .
8, max . Safety cat . 4, PL:e) .
-
ESPE with one PNP two-wires
output (e .g . optocoupled PNP-
type)
: connect the emitter output
to the S22 terminal and the
collector output to the S12 termi-
nal; short-circuit S12 with S21,
leaving S11 not connected (fig .
9 max . Safety cat . 2, PL:c) .
- ESPE with one relay two-wires
output: connect the output wires
to the S12 and S22 terminals;
short-circuit S12 with S21, lea-
ving S11 not connected (fig . 10
max . Safety cat . 2, PL:c) .
For safety cat . 2 applications,
a periodic test (interrupting the
ESPE light beam) must be carried
out . The test periodicity is defined
in the relevant standards .
The safety relay is enabled to
close the safety outputs only if both
input switches are operated .
START Circuit
The safety modules “SA” and
“DA” are set up with not-controlled
automatic/manual START . The
module can be employed connec-
ting between the X1-X2 terminals
either a NO START pushbutton
(for not monitored manual START)
or a short-circuit (for automatic
START) .
The safety modules “SC” and
“DC” are set up with monitored
manual START . The module can
be employed only connecting
between the X1-X2 terminals a
NO START pushbutton (monito-
red also for welding fault) . These
models cannot be configured for
automatic START .
Safety Outputs
Two NO voltage free safety outputs
are available between the 13-14
and 23-24 terminals: their contacts
are closed when the safety modu-