YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

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SECTION 8 - MICROPANEL 96 UNIT STATUS UNIT SWITCH OFF SHUTDOWN This message indicates the UNIT SWITCH is in the OFF position and not allowing the unit to run. UNIT STATUS DAILY SCHEDULE SHUTDOWN This message indicates that either the daily or holiday schedule programmed is keeping the chiller from running. UNIT STATUS REMOTE CONTROLLED SHUTDOWN This message indicates that either an ISN or RCC has turned the chiller OFF and is not allowing it to run. UNIT STATUS FLOW SWITCH SHUTDOWN This message indicates the flow switch is not allowing the chiller to run. There is a 1 second delay on this safety to assure the flow switch did not momentarily open. UNIT STATUS VSD COOLING SHUTDOWN This message indicates the chiller is shutdown, but running all the condenser fans, VSD glycol pump, and VSD fan in an effort to bring the internal VSD ambient temperature down to an acceptable level before allowing the chiller to start. SYS X REMOTE RUN CONTACT IS OPEN This message indicates the remote start/stop contact between 2 and 15 or 2 and 16 of the 1TB terminal block is open. There is a 1 second delay on this safety to assure the remote contacts did not momentarily open. SYS X SYSTEM SWITCH IS OFF This message indicates the system switch (software via keypad) is turned OFF. The system will not be allowed to run until the system switch is turned ON via the keypad. SYS X NOT RUNNING This message indicates the system is not running because the chilled liquid is below the setpoint or the micro has not loaded the lead system far enough into the loading sequence to bring the lag system ON. This FORM 201.28-NM1.1 ISSUE DATE: 8/29/2012 message will be displayed on the lag system until the loading sequence is ready for the lag system to start. SYS X COOLING DEMAND SHUTDOWN This message is only displayed in the Normal Shutdown History display to indicate a capacity control shutdown. SYS X COMPRESSOR RUNNING This message indicates the system is running as a result of cooling demand. SYS X SHUTTING DOWN The compressor shutting down message indicates the respective system is ramping down in speed prior to shutting OFF. This message is displayed after the software run signal is disabled until the VSD notifies the Chiller Control Board the compressor is no longer running. SYS X ANTI-RECYCLE TIMER = XXX SEC This message indicates the amount of time left on the respective system anti-recycle timer and the system is unable to start until the timer times out. SYS X DISCHARGE PRESSURE LIMITING The Discharge Pressure Limiting message indicates the discharge pressure load limit or discharge pressure unloading is in effect. SYS X SUCTION PRESSURE LIMITING The Suction Pressure Limiting message indicates the suction pressure load limit or suction pressure unloading is in effect. SYS X MOTOR TEMP LIMITING The Motor Temp Limiting message indicates the motor temp load limit or motor temp unloading is in effect. SYS X MOTOR CURRENT LIMITING The motor current limiting message indicates the motor current load limit or motor current unloading is in effect. JOHNSON CONTROLS
FORM 201.28-NM1.1 ISSUE DATE: 8/29/2012 SYS X PULLDOWN MOTOR CURRENT LIMITING The pulldown motor current limiting message indicates the pulldown motor current load limit or pulldown motor current unloading is in effect based on the programmed setpoint. SYS X ISN CURRENT LIMITING The ISN Current Limiting message indicates the motor current load limit or motor current unloading is in effect through the use of the YORKTalk setpoint. SYS X REMOTE MOTOR CURRENT LIMITING The Remote Motor Current Limiting message indicates the motor current load limit or motor current unloading is in effect through the use of the remote setpoint offset.The setpoint may be offset using a remote voltage or a current signal. The remote current limit must be activated for this function to operate. SYS X VSD BASEPLATE TEMP LIMITING The VSD Baseplate Temp Limiting message indicates the VSD Baseplate temp is high and load limit or unloading is in effect. SECTION 8 - MICROPANEL SYS X VSD INTERNAL AMBIENT TEMP LIMITING The VSD Internal Ambient Temp Limiting message indicates the VSD internal ambient temp is high and load limit or unloading is in effect. SYS X SOUND LIMITING The sound limiting message indicates the sound load limit is in effect based on the locally programmed sound limit from the keypad. The sound limit must be activated for this function to operate. SYS X ISN SOUND LIMITING The ISN sound limiting message indicates the sound load limit is in effect based on the ISN transmitted sound limit setpoint. The sound limit must be activated for this function to operate. SYS X REMOTE SOUND LIMITING The Remote sound limiting message indicates the sound load limit is in effect based on the Remote controlled sound limit setpoint. The setpoint may be offset using a remote voltage or current signal. The sound limit option must be activated for this function to operate. JOHNSON CONTROLS 97 8
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YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

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