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1.3 Features
1
OVERVIEW
(5) Small-scale safety control
The safety relay module is suited for small-scale safety control whose number of I/O
points is around 10.
(a) Programming is unnecessary.
Safety circuits can be easily created only by wiring, without programming and
settings.
Since an inspection on programming by safety certification organization is
unnecessary, the man-hour taken for obtaining the safety approval can be
omitted.
(b) Extension of safety circuit with extension module
By connecting extension safety relay modules, maximum 4 points of safety input
and maximum 4 points of safety output can be controlled.
(c) Safety control can be performed by itself.
Since a communication circuit for Q series programmable controller and CC-Link
is separated from a circuit for achieving the safety function, the safety relay
module can perform safety control by itself, independent of a failure of the Q
series programmable controller or CC-Link communication status.
(6) Fail safe
Fail safe can be achieved by inhibiting the safety relay module from starting when an
error occurs in safety input, start-up input, and/or internal circuit of the safety relay
module.
(7) Improvement of efficiency in wiring work
Using spring clamp terminal block allows to skip screw tightening work and to reduce
wiring work significantly.
(8) Connector insertion check
Using terminal block cover for connector insertion check prevents poor connection. If
the terminal block is not inserted securely, the terminal block cover does not close.
Figure 1.2 Terminal block cover
Terminal block cover