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Product Information / Produktinformation
A6151
Shaft Vibration Monitor
Interface RS 485
d4, z4 bus interface for communication with an MMS 68xx epro Interface card and the
configuration software.
1.6.5 Power supply
The monitor system voltages, and thus the 0 V / common connections for the measurement
and monitoring inputs and outputs, are galvanically separated.
Supply voltage inputs
Two redundant diode decoupled inputs for nominal
+24 V with common 0 V reference
Voltage input UB+ / UN+
d2 / z2
Common reference 0 V U
−
b2
Perm. voltage range
19 ... 31.2Vdc (IEC 654
−
2 class DC 4)
CSA: 24Vdc; SELV LPS
Power consumption
max. 6 W, at 24 V max. 250 mA
Monitor system voltage
The system voltages required for the internal supply are constantly monitored. If undervoltage
is detected an error message is generated
.
Sensor supply
For both channels of the monitor
Separation
Decoupled and galvanically separated from the
supply voltage, can be operated in parallel with other
monitors, open circuit and short circuit proof, non
reactive.
Sensor supply channel 1
Supply1(
−
) / S) b6/z6
Sensor supply channel 2
Supply2(
−
) / S) b8/d6
supply voltage
26.75 V DC; Tolerance
±
2
%
Residual ripple
< 20 mVpp (at nominal current 20 mA)
Max. current
35 mA
Max. short
−
circuit current
0 mA
≤
I short
−
circuit
≤
5 mA;
Open circuit and short
−
circuit proof
