EPRO MMS6250 Digital Axial Position Protection System

 Product Details:

Description: 
----------------------------------------------------------------------------------------------------------------

MMS-6250 DATASHEET PDF

Microcontroller based 3-channelmeasuring system
PROFIBUS-DP Interface (optional)
High safety level due to password protection at each of the monitors
Up to 6 limit values per channel
Two current outputs per channel, one of them electrically isolated
Analog comparison between the three channels
Redundant 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
RS 232 Interface for input of parameters
RS 485 interface for data exchange with the host computer
Hot swap of boards during operation


Applications:
----------------------------------------------------------------------------------------------------------------

The axial-position measuring and protection system DAPS, DAPS AS and DAPS TS serve the measurement and protection of inadmissible high axial displacements of the turbine shaft.
DAPS systems in combination with safety shut-off valves in powerplants are suitable to replace older mechanical position control and protection systems.
Due to the consistent triple channel design, beginning with the signal acquisition up to the evaluation of the measured shaft displace-ment, 
the operational safety and also the protection function on a high level can be ensured.
Alarm outputs and error mes-sages are output as potential-free relay outputs and as short-circuit proof binary 24 V outputs.
Beside this the alarm outputs are also available as potential free relay contacts in 2-out-of-3 logic.
The system includes an extended fault detection function. 
The three sensors are continuously checked on operating within the permitted limits.
Moreover, the channels mutually check and supervise the output signals of each other. 
lf the internal fault detection function detects an error, this will be indicated via the output contacts and shown on the display as plaintext.
By using prefabricated connection cables and screw terminals, the systems may be integrated economi-cally in 19" cabinets.