YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
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SECTION 8 - MICROPANEL<br />
IGBT Baseplate Temperature<br />
VSD IGBT BASEPLATE TEMPS T1 = XXX °F<br />
T2 = XXX °F<br />
This message displays the IGBT highest baseplate<br />
temperature for 2 and 3 compressor units at the time of<br />
the fault. 4 compressor units display temperatures for<br />
1/3 (T1) and 2/4 (T2).<br />
Precharge Signal Status and VSD Cooling<br />
Status<br />
VSD PRECHARGE SIGNAL = XXX<br />
This display provides the state of the precharge signal,<br />
where XXX is either ON or OFF at the time of the<br />
fault.<br />
Compressor #1 and #2, 105% FLA Motor<br />
Overload Current Setting<br />
VSD COMP 1 MOTOR OVERLOAD = XXX AMPS<br />
COMP 2 MOTOR OVERLOAD = XXX AMPS<br />
This message displays the setting of the VSD’s 100%<br />
FLA potentiometer for Compressor #1 and #2 at the<br />
time of the fault.<br />
System Data<br />
System #1 Pressures<br />
SYS 1 PRESSURES OIL = XXXX PSIG<br />
DISCHARGE = XXXX PSIG<br />
This message displays the measured system oil and<br />
discharge pressures at the time of the fault.<br />
SYS 1 PRESSURES SUCTION = XXXX PSIG<br />
CONDENSER LIQUID = XXXX PSIG<br />
This message displays the measured system suction<br />
and condenser liquid line pressure at the time of the<br />
fault.<br />
System # 1 Temperatures<br />
SYS 1 TEMPERATURES OIL = XXX.X °F<br />
EDUCTOR = XXX.X °F<br />
This message displays the measured system oil and<br />
eductor temperatures at the time of the fault.<br />
108<br />
FORM 201.28-NM1.1<br />
ISSUE DATE: 8/29/2012<br />
SYS 1 CONDENSER LIQUID TEMP = XXX.X °F<br />
SUBCOOLING = XXX.X SAT TEMP = XXX.X °F<br />
This message displays the condenser liquid, liquid line<br />
subcooling and saturated discharge temperatures at the<br />
time of the fault.<br />
SYS 1 DISCHARGE TEMP = XXX.X °F<br />
SUPERHEAT = XXX.X SAT TEMP = XXX.X °F<br />
This message displays the system discharge, discharge<br />
superheat and saturated discharge temperatures at the<br />
time of the fault.<br />
Compressor Speed and Heater Status<br />
SYS 1 COMPRESSOR SPEED = XXX.X %<br />
HEATER = XXX.X °F<br />
This message indicates the compressor speed in % and<br />
the heater status at the time of the fault.<br />
System #1 Motor Temperatures<br />
SYS 1 MOTOR TEMPS T1 = XXX.X °F<br />
T2 = XXX.X T3 = XXX.X °F<br />
This message displays the System 1 motor thermistor<br />
temperatures at the time of the fault.<br />
Flash Tank Level and Economizer Position<br />
SYS 1 FLASH TANK LEVEL Y 512 ADC<br />
ECONOMIZER VALVE = XXX.X %<br />
This message displays the flash tank level and the<br />
economizer valve position in % at the time of the fault.<br />
Condenser Subcooling and Condenser Drain<br />
Valve Position<br />
SYS 1 CONDENSER SUBCOOLING = XXX.X °F<br />
CONDENSER DRAIN VALVE = XXX.X %<br />
This message displays the condenser subcooling and<br />
the Condenser Drain Valve position at the time of the<br />
fault.<br />
JOHNSON CONTROLS