● 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