7 Hardware configuration
Topics covered in this chapter:
• Hardware configuration: overview
• The A6560R and A6510 modules
• Configure the A6560R with a terminal emulator
7.1 Hardware configuration: overview
The AMS 6500 Machinery Health
™
Monitor (A6560R CPU module, in combination with the
A6510 Signal Input module), is a multi-channel, multi-tasking, multi-processor data
acquisition system primarily intended for monitoring heavy industrial rotating machinery.
Typical signal inputs are dynamic AC machine vibration signatures from accelerometers,
velocity probes, or eddy current sensors. These signals include two components: the
dynamic AC component, which represents machine vibration, and a DC component, which
represents the sensor bias level. In the case of an eddy current sensor, the DC component
represents the gap, or average distance between the probe tip and the machine shaft.
Other signal inputs include process signals; these are DC parameters such as temperature
or pressure.
Tachometer inputs are used to determine machine speed. These tachometer signals are
typically generated from an eddy current sensor or passive magnetic sensor positioned at
a machine shaft keyway or gear, producing a pulse train (not necessarily 1x machine
speed) representing the machine phase and running speed.
Discrete inputs represent machine states such as running, off, and starting. These inputs
are used to control or modify the data acquisition based on machine state. Common state
control inputs are relay closures or machine RPM. AC or DC signal levels can also be used
for state control.
7.1.1 Gross Scan monitoring
Gross Scan monitoring includes:
• the acquisition of the overall level of the dynamic AC vibration signal, typically the
RMS value of the signal.
• the DC sensor bias level.
• the measurement of a DC process signal.
All these signal inputs are DC values (the RMS value is a DC value proportional to the
overall energy content of the AC signal). The Gross Scan inputs are multiplexed into a fast
successive approximation ADC controlled by the A6560R CPU module. Gross Scan
monitoring measures all input channels AC+DC twice per second. When the Transient
option is included, true waveform peak-to-peak may be included in Gross Scan
monitoring.
Hardware configuration
MHM-97125-PBF-EN, R0 53
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