Frick QUANTUM LX - Phd Vibration Analysis

S90-020 M FRICK
®
QUANTUM™ LX COMPRESSOR CONTROL PANEL
Page 22 MAINTENANCE
PhD Vibration Analysis
The Frick™ Enhanced Analog board has the built-in
capability to directly receive signals from vibration
accelerometers and motor stator RTDs (100  platinum)
which are mounted on compressor housing and/or the
motor/shaft. The purpose of these devices is to monitor
compressor motor/shaft vibration and/or motor
temperature.
Accelerometers transmit continuous signals to the analog
board. The Quantum™ LX software monitors these
signals, and can detect any variations in the frequency of
the vibration. The vibrations increase over time,
predefined setpoint limits will be exceeded, and a warning
will be generated from the Quantum™ to the display
screen, warning the operator of the condition. If the alarm
is not addressed, a shutdown will occur to prevent
damage to the compressor. Likewise, if RTDs are used for
bearings, they will measure the temperature of the motor
stator, which will increase (due to the failing bearings
causing increased friction).
Refer to the drawing at the bottom of this page for the
wiring connections of the different possible configurations.
Additional information on PhD vibration monitoring and
theory, may be found in the PhD Vibration Monitoring
System manual (E70-020 TB).
PhD Connections
1 2 3 4 5 6 7 8
Signal (to pin 2)
LK3 & LK4 -
Install for Vibration
Sensor Gain
(When needed)
PhD Channel 4
Comp. Motor Vibration or
Bearing Temp. on
O
pp
osite Motor Shaft End
PhD Channel 8
Future
PhD Channel 3
Comp. Motor Vibration or
Bearing Temp. Motor Shaft
End
PhD Channel 7
Motor RTD Stator #3
Signal (to pin 2)
Signal (to pin 5)
Return
(
to
p
in 3
)
Return
(
to
p
in 6
)
Signal (to pin 2)
Return
(
to
p
in 6
)
Signal (to pin 5)
Return
(
to
p
in 3
)
Signal (to pin 2)
Return
(
to
p
in 3
)
Return
(
to
p
in 6
)
Signal (to pin 5)
Return
(
to
p
in 3
)
U8
LK2
P11B (Outputs)
(CH5) (CH6) (CH7) (CH8)
P11A (Outputs)
(CH1) (CH2) (CH3) (CH4)
P10A (Inputs)
(CH21) (CH22)
P9A (Inputs)
(CH17) (CH18)
P9B (Inputs)
(CH19) (CH20)
P10B (Inputs)
(CH23) (CH24)
U19
P1
LK3
LK4
Part #: 640D0168H01 Revision: Serial #:
D5
24VDC
U24
U9
U20
U21
U11
U13
U4
SW1
Open
PhD Channel 1
Vibration Accelerometer
Suction
PhD Channel 2
Vibration Accelerometer
Discharge
PhD Channel 5
Motor RTD Stator #1
PhD Channel 6
Motor RTD Stator #2