Phd Vibration Analysis - Johnson Controls FRICK QUANTUM HD Maintenance Manual

PHD VIBRATION ANALYSIS

The Frick™ 32 channel analog board has the built-
in capability to directly receive signals from vibration
accelerometers, and motor stator RTDs (100 Ω plati-
num) which are mounted on the compressor housing
and/or the motor/shaft. The purpose of these devices
is to monitor compressor plus motor/bearing vibra-
tion and/or motor bearing plus motor stator tem-
perature.
Accelerometers transmit continuous signals to the
analog board. The Q5 software monitors these sig-
nals, and can detect any variations in the frequency
of the vibration. If the vibration levels increase over
time, predefi ned setpoint limits may be exceeded,
resulting in a warning from the Quantum™ notifying
the operator of the condition. If the alarm is not ad-
dressed, a shutdown will occur to prevent damage to
LK3 LK4 Gain Ratio
Out Out 1 : 1
Out * In * 11 : 1
In Out 21 : 1
In In 31 : 1
* Default
PH H D Ch D Ch. . 6 6
Motor Stator
Minus (to pin 6)
#2 Temp. (RTD)
Signal (to pin 5)
Plus (to pin 4)
Minus (to pin 3)
PH H D Ch D Ch. . 5 5
Signal (to pin 2)
Motor Stator
#1 Temp. (RTD) Plus (to pin 1)
PH H D Ch D Ch. . 2 2
Minus (to pin 5)
Discharge End
Signal (to pin 4)
Vibration
(Accelerometer)
Minus (to pin 2)
PH H D Ch D Ch. . 1 1
Signal (to pin 1)
Suction End
Vibration
(Accelerometer)
QUANTUM™ HD COMPRESSOR CONTROL PANEL
MAINTENANCE
LK4
LK3
U4
PHD Connections (Analog Board # 1)
the compressor. Likewise, if an RTD is used for bear-
ings, it will measure the temperature of the motor
bearings and stator, which may increase (due to lack
of lubrication).
Typically, all PHD related connections will be to Ana-
log Board # 1. However, if monitoring of both motor
bearing vibration and temperature is required, the
temperature sensors will be wired to Analog board
#2, channels 19 and 20. Refer to the drawing at the
bottom of this page for the wiring connections of the
different possible confi gurations.
The full wiring diagram may be found later in this
manual in the Quantum™ Drawings section. Addi-
tional information on PHD vibration monitoring and
theory may be found in the PhD Vibration Monitoring
System manual (E70.020-TB).
Minus (to pin 3)
Signal (to pin 2)
Plus (to pin 1)
Minus (to pin 5)
Signal (to pin 4)
Minus (to pin 2)
Signal (to pin 1)
090.040-M (MAR 12)
Page 37
PH H D Ch D Ch. . 8 8
Liquid Injection Oil
PH H D Ch D Ch. . 7
Motor Stator #3 Temp. (RTD)
PH H D Ch D Ch. . 4 4
Opposite Shaft Side Motor
Vibration (Accelerometer) Or
Opposite Shaft Side Motor
Temp. (RTD or Thermocouple)
PH H D Ch D Ch. . 3 3
Shaft Side Motor Vibration
(Accelerometer) Or Shaft Side
Motor Temp. (RTD or
Thermocouple)