A safety relay that monitors the safe
standstill, over-speed and direction
of rotation of a variety of
machines is now available
from Pilz Automation
Technology. The PNOZ s30
speed monitor can be used
for applications from small
packaging machines to large
rotating machinery as used,
for example, in paper mills
and web-based printing
machines.

In accordance with the
new Machinery Directive,
when a machine drive is
brought to a standstill, the operating
status must be safely monitored and
maintained.

Part of Pilz Automation
Technology’s PNOZsigma range, the
PNOZ s30 can be connected to many
motor feedback systems which use
incremental encoders or
proximity sensors to provide a
speed signal. A rotary knob
with key function (push and
turn) and an integrated display
enable users to enter their own
data via an intuitive menu
structure. These parameters
are stored on a chip card. The
permanent display informs
users about current speed
during machine operation,
while integrated LCDs show
the state of the output relay.

Safety functions include standstill
monitoring combined with safe
position monitoring at standstill.