Control device for refrigerator system, refrigerator system, control method for refrigerator system, and control program for refrigerator system

Abstract

There is provided a chiller control device ( 50 ) of a chiller system ( 1 ) that is provided with a centrifugal chiller ( 11 ) provided with a compressor ( 60 ) rotated by a motor ( 72 ), an operation panel ( 20 ) which is provided in the centrifugal chiller ( 11 ), operates the centrifugal chiller ( 11 ), and displays a state of the centrifugal chiller ( 11 ), and a starting panel ( 20 ) which supplies power to the motor ( 72 ) and starts the motor ( 72 ). The starting panel ( 10 ) begins supplying power to the motor ( 72 ) of the compressor ( 60 ) in response to a start command from the centrifugal chiller ( 11 ) to start the motor ( 72 ), and outputs a start answer and a start completion signal to the centrifugal chiller ( 11 ), and an abnormal state is output to the operation panel ( 20 ) if the start answer and/or the start completion signal continue to be output after the centrifugal chiller ( 11 ) has stopped.

1 - 10 . (canceled) 
     
     
         11 . A control device for a chiller system that is provided with a chiller provided with a compressor rotated by a rotor, an operation panel which is provided in the chiller, operates the chiller, and displays a state of the chiller, and a starting panel which supplies power to the motor and starts the motor,
 wherein the starting panel begins supplying power to the motor of the compressor in response to a start command from the chiller to start the motor, and outputs a motor start signal and a start completion signal to the chiller, and   wherein if the motor start signal and/or the start completion signal continue to be output after the chiller has stopped, an emergency stop command is output from the operation panel to the starting panel.   
     
     
         12 . The control device for a chiller system according to  claim 11 ,
 wherein the emergency stop command is a maintained signal.   
     
     
         13 . The control device for a chiller system according to  claim 11 ,
 wherein if the motor start signal and/or the start completion signal continue to be output after the chiller has stopped, a chilled water pump provided in an evaporator connected to the compressor continues to operate, and a cooling water pump provided in a condenser continues to operate.   
     
     
         14 . The control device for a chiller system according to  claim 11 ,
 wherein if the motor start signal and/or the start completion signal continue to be output after the chiller has stopped, an oil pump, which is provided in the compressor to supply a lubricant, continues to operate.   
     
     
         15 . The control device for a chiller system according to  claim 11 ,
 wherein if the motor start signal and/or the start completion signal continue to be output after the chiller has stopped, a refrigerant control valve of the compressor is controlled such that a chilled water outlet temperature of the chiller becomes equal to a chilled water inlet temperature of the chiller.   
     
     
         16 . A chiller system comprising:
 the control device for a chiller system according to  claim 11 .   
     
     
         17 . A control method for a chiller system that is provided with a chiller provided with a compressor rotated by a rotor, an operation panel which is provided in the chiller, operates the chiller, and displays a state of the chiller, and a starting panel which supplies power to the motor and starts the motor, the method comprising:
 beginning supplying power to the motor of the compressor from the starting panel in response to a start command from the chiller to start the motor, and outputting a motor start signal and a start completion signal to the chiller from the starting panel; and   outputting an emergency stop command from the operation panel to the starting panel if the motor start signal and/or the start completion signal continue to be output after the chiller has stopped.   
     
     
         18 . A control program for a chiller system that is provided with a chiller provided with a compressor rotated by a rotor, an operation panel which is provided in the chiller, operates the chiller, and displays a state of the chiller, and a starting panel which supplies power to the motor and starts the motor, the program comprising:
 a step of beginning supplying power to the motor of the compressor from the starting panel in response to a start command from the chiller to start the motor, and of outputting a motor start signal and a start completion signal to the chiller from the starting panel; and   a step of outputting an emergency stop command from the operation panel to the starting panel if the motor start signal and/or the start completion signal continue to be output after the chiller has stopped.