Abstract: There is described controllers, methods, and non-transitory computer readable medium for adaptive speed control of a fan array of an air handling unit. A fan speed command for the fan array is identified. The fan speed command is scaled based on a floating maximum fan speed. A fan error of at least one fan of the fan array is detected. The floating maximum fan speed is adjusted in response to detecting the fan error. The fan speed command is rescaled based on the adjusted floating maximum fan speed. The fan speed command is provided to each fan of the fan array.

Abstract: There is described a system and method for high ventilation using outdoor air in an indoor area comprising an HVAC unit and a controller. The HVAC unit includes at least one damper and a fan. The controller detects an activation of an emergency purge mode, adjusts the at least one air damper to allow a maximum of outside air to flow through the HVAC unit without circulating return air, and establishes a fan speed of the fan for maximum outside airflow through the HVAC unit. The controller also modifies the fan speed of the fan based on an occupant comfort criteria without regard to energy efficiency of the HVAC unit. The fan speed is modified based on a delta enthalpy of the HVAC unit and a nominal capacity of the HVAC unit.

Abstract: There is described controllers, methods, and non-transitory computer readable medium for adaptive speed control of a fan array of an air handling unit. A fan speed command for the fan array is identified. The fan speed command is scaled based on a floating maximum fan speed. A fan error of at least one fan of the fan array is detected. The floating maximum fan speed is adjusted in response to detecting the fan error. The fan speed command is rescaled based on the adjusted floating maximum fan speed. The fan speed command is provided to each fan of the fan array.

Abstract: There is disclosed a system and method for controlling a multi-zone dual deck air handling unit. An outside air temperature of the air handling unit is received. Zone demands associated with zones are received in which each zone demand corresponds to a particular zone. A cooling deck of the air handling unit, a heating deck of the air handling unit, or both, are engaged in response to the outside air temperature and the plurality of zone demands. Zone dampers associated with the zones are positioned based on the zone demands in response to engaging the cooling deck and the heating deck concurrently. Each zone damper is position at either a maximum cooling position or a maximum heating position. The zone dampers associated with the zones are modulated based on the zone demands in response to engaging the cooling deck or the heating deck distinctly.

Abstract: There is disclosed a multi-stage air handling unit for linear capacity output comprising condenser coils, expansion valves, evaporator coils, and compressors. The condenser coils convert a refrigerant from a gas state to a liquid state to transfer heat to a first air medium. The expansion valves decrease pressure in the refrigerant. The evaporator coils convert the refrigerant from the liquid state to the gas state to transfer heat from a second air medium. The compressors increase pressure in the refrigerant and provide the linear capacity output. The compressors consist of one variable capacity compressor and at least one constant capacity compressor. For other aspects, data associated a multi-stage air handling unit is collected, a scroll compressor may be identified, the air handling unit is converted, a multi-stage compressor may be determined, and multiple states of the compressors are operated as linear capacity output.

Abstract: There is described a system and method for configuring, commissioning and troubleshooting an HVAC unit. A unit type configuration is established based on a type of HVAC system and temperature data, humidity data, and/or indoor air quality data. A fan configuration is established based on whether a variable frequency drive fan is identified. Cooling and heating stage configurations are established based on a compressor parameter and a heating stage parameter. An available auxiliary termination is identified in response to establishing the configurations. A safety is assigned to the available auxiliary termination in response to identifying the available auxiliary termination. An IO table is provided to an HVAC controller, which includes physical input/output assignments for the terminations of the HVAC controller based on the configurations and the assigned safety. For another embodiment, the fan configuration is established based on one of a traditional stage blower fan or variable frequency drive fan.

Abstract: There is described a system and method for high ventilation using outdoor air in an indoor area comprising an HVAC unit and a controller. The HVAC unit includes at least one damper and a fan. The controller detects an activation of an emergency purge mode, adjusts the at least one air damper to allow a maximum of outside air to flow through the HVAC unit without circulating return air, and establishes a fan speed of the fan for maximum outside airflow through the HVAC unit. The controller also modifies the fan speed of the fan based on an occupant comfort criteria without regard to energy efficiency of the HVAC unit. The fan speed is modified based on a delta enthalpy of the HVAC unit and a nominal capacity of the HVAC unit.

Abstract: There is described a system and method for configuring, commissioning and troubleshooting an HVAC unit. A unit type configuration is established based on a type of HVAC system and temperature data, humidity data, and/or indoor air quality data. A fan configuration is established based on whether a variable frequency drive fan is identified. Cooling and heating stage configurations are established based on a compressor parameter and a heating stage parameter. An available auxiliary termination is identified in response to establishing the configurations. A safety is assigned to the available auxiliary termination in response to identifying the available auxiliary termination. An IO table is provided to an HVAC controller, which includes physical input/output assignments for the terminations of the HVAC controller based on the configurations and the assigned safety. For another embodiment, the fan configuration is established based on one of a traditional stage blower fan or variable frequency drive fan.

Abstract: There are disclosed controllers and methods for managing economizer outputs. The economizer controller comprises an input component, a processor, and an output component. The input component receives incoming control signals from an input device, in which each incoming control signal is associated with a corresponding compressor. The processor generates an altered association of some of the incoming control signals to a different compressor based on a predetermined criteria. The output component sends output control signals based on the altered association to a control circuit associated with the compressors.

Abstract: There is described a mobile device and method for commissioning air intake control of an environmental control system. A communication component receives multiple air measurements from an air flow sensor, in which the air flow sensor is positioned in a duct compartment of the environmental control system. The processor generates multiple air flow tables based on the multiple air measurements, multiple fan speeds associated with the environmental control system, and multiple damper positions associated with the environmental control system. The communication component transmits the multiple air flow tables to an air intake controller of the environmental control system.

Abstract: There is described a mobile device and method for commissioning air intake control of an environmental control system. A communication component receives multiple air measurements from an air flow sensor, in which the air flow sensor is positioned in a duct compartment of the environmental control system. The processor generates multiple air flow tables based on the multiple air measurements, multiple fan speeds associated with the environmental control system, and multiple damper positions associated with the environmental control system. The communication component transmits the multiple air flow tables to an air intake controller of the environmental control system.

Abstract: An automatic uncoupling mechanism for couplers comprises a coupler knuckle spindle and a driving unit comprising a cylinder body hinged to a coupler body and a telescopic member; and further comprises a first rotating member, a boss and a boss stopper, wherein the first rotating member comprises a crank hinged to the telescopic member and a rotating part being sheathed on the coupler knuckle spindle. The driving unit unidirectionally drives the telescopic member so that the rotating part drives the coupler knuckle spindle to unidirectionally rotate by the contact of the boss with the boss stopper, realizing coupler uncoupling; and, after the driving unit drives the telescopic member to return to its position, the rotation of the coupler knuckle spindle for achieving coupler coupling is not limited by the rotating part.

Abstract: An automatic uncoupling mechanism for couplers comprises a coupler knuckle spindle and a driving unit comprising a cylinder body hinged to a coupler body and a telescopic member; and further comprises a first rotating member, a boss and a boss stopper, wherein the first rotating member comprises a crank hinged to the telescopic member and a rotating part being sheathed on the coupler knuckle spindle. The driving unit unidirectionally drives the telescopic member so that the rotating part drives the coupler knuckle spindle to unidirectionally rotate by the contact of the boss with the boss stopper, realizing coupler uncoupling; and, after the driving unit drives the telescopic member to return to its position, the rotation of the coupler knuckle spindle for achieving coupler coupling is not limited by the rotating part.

Abstract: Disclosed is a front suspension system having overload protection. The system comprises a mounting seat, a centering device, a support device used for supporting a coupling buffer and a coupling end pin, wherein the mounting seat is connected to a railway vehicle body, and the centering device and the support device are both installed on the mounting seat. The system further has a coupling connection seat and an overload protection element, wherein the coupling connection seat comprises a base and a coupling connection part connected as one with the base. The base is connected to a rear face of the mounting seat by means of the overload protection element. The coupling connection part passes through a through hole provided in the middle of the mounting seat and is connected with the coupling buffer by means of the coupling end pin. The coupling connection part is closely fitted with the through hole. The front suspension system has a simple structure and is lightweight.

Abstract: Disclosed is a front installed suspension system having overload protection. The system comprises a mounting seat (1), a centring apparatus (2), a support apparatus (3) used for supporting a coupling buffer and a coupling end pin (4), wherein the mounting seat (1) is connected to a railway vehicle body, and the centring apparatus (2) and the support apparatus (3) are both installed on the mounting seat (1). The system further has a coupling connection seat (5) and an overload protection element (6), wherein the coupling connection seat (5) comprises a base and a coupling connection part connected as one with the base. The base is connected to a rear face of the mounting seat (1) by means of the overload protection element (6). The coupling connection part passes through a through hole (7) provided in the middle of the mounting seat (1) and is connected with the coupling buffer by means of the coupling end pin (4). The coupling connection part is closely fitted with the through hole (7).