York YST Operation Manual page 148

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
tor support. The "Horizontal" designation refers to the
proximity probe installed at approximately 45 degrees
from the vertical center on the right side of the rotor
support when facing the shaft end of the compressor.
The "Vertical" designation refers to the proximity
probe installed at approximately 45 degrees from the
vertical center on the left side when facing the shaft
end of the compressor. When the sensors are enabled,
the following messages are also enabled:
After the accelerometer cables are con-
nected to the transmitters, the zero on all
vibration transmitters must be adjusted
to provide a 4.0 mA output to ensure the
proper operation of these messages.
"Compressor horizontal vibration out of
range"
The input signal from the Compressor Horizontal Vi-
bration Transmitter is more than 0.5 mA below the
calibrated minimum input signal, which generally in-
dicates a defective transmitter, accelerometer, or cable.
The chiller can only be started after the transmitter
input is within the calibrated range and the START/
STOP control switch is placed in the STOP-RESET
(O) position.
An input signal above 2.0 In/Sec would
also indicate a defective transmitter or
accelerometer but will generate a normal
safety shutdown message since this value
exceeds the safety setpoint.
148
"Compressor vertical vibration out of
range"
The input signal from the Compressor Vertical Vibra-
tion Transmitter is more than 0.5 mA below the cali-
brated minimum input signal, which generally indicates
a defective transmitter, probe, or cable. The chiller can
only be started after the transmitter input is within the
calibrated range and the START/STOP control switch
is placed in the STOP-RESET (O) position.
"Compressor - horizontal vibration"
The input signal from the Compressor Horizontal Vi-
bration Transmitter is above the CVSP2-Compressor
Vibration Shutdown setpoint shown on the Alarm/
Shutdown Setpoints Screen. This check is bypassed
during shutdown until the start sequence is initiated.
The START/STOP control switch must be placed in the
STOP-RESET (O) position before starting the chiller.
"Warning - Compressor - vertical
vibration"
The input signal from the Compressor Vertical Vi-
bration Transmitter is above the CVSP2-Compressor
Vibration Shutdown setpoint shown on the Alarm/
Shutdown Setpoints Screen. This check is bypassed
during shutdown until the start sequence is initiated.
The START/STOP control switch must be placed in the
STOP-RESET (O) position before starting the chiller.
FORM 160.67-O1
ISSUE DATE: 4/1/2015
JOHNSON CONTROLS