VibroSystM DMV-100, Руководство по установке

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23 DMV-100 Rotor Creep and Speed Detector - Installation Manual
4. INSTALLATION OF THE DCC-631 MODULE FOR THE DMV-100
SYSTEM
4.1 Preliminary considerations
The DCC-631 module is a specialized command
instrument which controls an auxiliary power relay
to announce rotor movement. An absence of air
gap variation over a period of at least 25 seconds
indicates the rotor has stopped moving, and the
DCC-631 module then o24V
DC
to the
auxiliary relay. The power to the auxiliary relay is
instantly cut upon detection of signal variations from
the VM 3.12 air gap sensor.
Figure 23 : DCC-631 module from the LIN-300 Series
•
The VM3.12 sensor connects to the DCC-631 module through a 10S Type triaxial extension cable. The
nominal length of the 10S triaxial cable is 10m (
[32.8 ft.] ). The effective length of this cable may however
vary by + or - 0.5m ( [1.6 ft.] ). The length of the cable is set during factory calibration and must not be
altered.
•
The DCC-631 module must be installed close to the stator of the monitored machine.
•
The casing of the DCC-631 module must be grounded.
•
The cast aluminium casing is not water-proof. An additional protection against dust, oil, and water is
needed, particularly in harsh conditions. The DCC-631 module should therefore be installed in a water-
tight enclosure or cabinet.
•
A standard 45 m [145 ft.] M12 connectorized cable is used and serves double duty:
- carry in the +24V
DC
supply needed to power the DCC-631 module
- carry out the voltage output signal which drives the auxiliary relay for creep alarm annunciation.
•
The location where the DCC-631 module will be installed must meet certain requirements. Before
proceeding with the installation, make sure the selected location allows:
- drilling 4 mounting holes for mechanical installation of the DCC-631 module;
- connection of the triaxial extension cable (from the VM 3.1 sensor);
- connection of the power input and signal output M12 connectorized cable to/from the +24V
DC
power
supply and auxiliary relay.