● Systems DOPS and DOPS AS SIL3-
certified
● PROFIBUS-DP Interface: (optional)
● Microcontroller based 3-channel
measuring system
● High safety level due to password
protection at each of the monitors
● Up to 6 limit values per channel
● Two current outputs per channel with
zoom and dual current function, one
of them electrically isolated
● Mutual comparison of pulses and
output signals between all channels
● Redundant power supplies for
monitors and backplane
● Self-test functions for electronic
circuits and sensors
● Simplified fault detection by display
messages in plaintext
● Electrical isolation of binary input and
output signals
● Wiring by means of preformed cables
and converters in the control cubicle
● RS 232 interface for input of
parameters
● RS 485 interface for data exchange
with the host computer
● Hot swap of boards during operation
The speed measurement and
overspeed protection systems
DOPS and DOPS AS serve the
measurement of speeds and the
protection of inadmissible
overspeeds at rotating machines.
The DOPS systems in combination
with safety shut-off valves
are suitable to replace older
mechanical overspeed protection
systems.
With the consistent three channel
design, starting with the signal
detection via signal processing up
to the evaluation of the measured
speed, the system offers the
maximum safety for the machines
to be monitored.
Safety relevant limit values (e.g.
overspeed limits) are submitted to
the post-connected fail-safe
technique.
Thus it can be ensured that beside
operational safety, the protection
function on a high level standard is
met as well.
The integrated peak value memory
permits reading out the maximum
speed value that has occurred
before the machine was switched
off. This function provides important
information for evaluating the
mechanical machine load caused
by the overspeed.
Alarm outputs and error
messages are output as potentialfree
relay outputs and as shortcircuit
proof +24 V voltage outputs.
The alarm outputs, combined in 2
out of 3 logic, are also available as
potential free relay contacts.
The system includes an extended
fault detection function. The three
