Disclosed is a hoist apparatus including: an electric motor, and a control box that can be electrically powered by a power supply, the control box including at least an electronic control circuit, an electrical wiring and an external casing forming a box of the control box, the external casing including at least sidewalls and a removable lid closing the box, the control box controlling the operations of the electric motor thanks to the electrical wiring connected to the electronic control circuit, to the power supply and to the electric motor, and a monitoring device, wherein the monitoring device is an insert of the box, the monitoring device being arranged within an enclosure, the enclosure being an added part of the box or being an exchanged part of the box and wherein the monitoring device is connected to the electrical wiring.

A remote controller includes a shell having an upper shell and a lower shell, and further includes a light emitting module and a fixing plate for fixing the light emitting module. The fixing plate is fixedly connected to an inner side of the lower shell. The light emitting module is fixedly connected to one side, far away from the lower shell, of the fixing plate. The fixing plate is provided with a first light-transmitting hole for displaying the light emitting module; and the lower shell is provided with a second light-transmitting hole for displaying the fixing plate.

A remote controller includes a shell having an upper shell and a lower shell, and further includes a light emitting module and a fixing plate for fixing the light emitting module. The fixing plate is fixedly connected to an inner side of the lower shell. The light emitting module is fixedly connected to one side, far away from the lower shell, of the fixing plate. The fixing plate is provided with a first light-transmitting hole for displaying the light emitting module; and the lower shell is provided with a second light-transmitting hole for displaying the fixing plate.

A system for positioning equipment comprises a hoist including an electric motor coupled to a pulley for exerting a pulling force upon a tension member that extends to a distal end configured to attach to an elevated structure. The system also comprises a portable power supply including a battery supplying DC power, and an inverter configured to generate and supply AC power to the hoist for driving the electric motor and thereby lifting the hoist toward the elevated structure. A method for pre-positioning a hoist comprises attaching a tension member of a hoist to an elevated structure; generating AC power from a DC source by an inverter of a portable power supply; and lifting the hoist using the portable power supply. Thus, the hoist can be pre-positioned in an elevated location before utility power is available.

A system for positioning equipment comprises a hoist including an electric motor coupled to a pulley for exerting a pulling force upon a tension member that extends to a distal end configured to attach to an elevated structure. The system also comprises a portable power supply including a battery supplying DC power, and an inverter configured to generate and supply AC power to the hoist for driving the electric motor and thereby lifting the hoist toward the elevated structure. A method for pre-positioning a hoist comprises attaching a tension member of a hoist to an elevated structure; generating AC power from a DC source by an inverter of a portable power supply; and lifting the hoist using the portable power supply. Thus, the hoist can be pre-positioned in an elevated location before utility power is available.

A method and system to prevent unexpected operation of a motor when the voltage level on a DC bus drops is disclosed. The voltage level on the DC bus is monitored during a run command. When a run is commanded, the processor executes a control routine to determine a desired amplitude and frequency for the output voltage required to control the motor connected to the motor drive. If the desired frequency of the output voltage exceeds a maximum frequency for the measured voltage on the DC bus, as established by parameters stored in the motor drive, the motor drive limits the output frequency to the maximum frequency for the corresponding measured voltage. The motor drive continually monitors the measured voltage present on the DC bus and further reduces the maximum output frequency allowed during the run if the present value of the measured voltage drops below a previously measured value.

A method and system to prevent unexpected operation of a motor when the voltage level on a DC bus drops is disclosed. The voltage level on the DC bus is monitored during a run command. When a run is commanded, the processor executes a control routine to determine a desired amplitude and frequency for the output voltage required to control the motor connected to the motor drive. If the desired frequency of the output voltage exceeds a maximum frequency for the measured voltage on the DC bus, as established by parameters stored in the motor drive, the motor drive limits the output frequency to the maximum frequency for the corresponding measured voltage. The motor drive continually monitors the measured voltage present on the DC bus and further reduces the maximum output frequency allowed during the run if the present value of the measured voltage drops below a previously measured value.

A baler includes a body, and a wrap system that is attached to the body. The wrap system is operable to support a roll of wrap material in an installed position. A cover is attached to the body, and is moveable between an open position and a closed position. When in open position, the cover provides access to the wrap system from an exterior location. When in the closed position, the cover encloses the wrap system from the exterior location. The baler includes a lift system attached to the body. The lift system is concealed between the body and the cover when the cover is disposed in the closed position. The lift system is positioned below the cover when the cover is disposed in the open position. The lift system raises the roll of wrap material into the installed position.

A baler includes a body, and a wrap system that is attached to the body. The wrap system is operable to support a roll of wrap material in an installed position. A cover is attached to the body, and is moveable between an open position and a closed position. When in open position, the cover provides access to the wrap system from an exterior location. When in the closed position, the cover encloses the wrap system from the exterior location. The baler includes a lift system attached to the body. The lift system is concealed between the body and the cover when the cover is disposed in the closed position. The lift system is positioned below the cover when the cover is disposed in the open position. The lift system raises the roll of wrap material into the installed position.

A remote controller includes a shell having an upper shell and a lower shell, and further includes a light emitting module and a fixing plate for fixing the light emitting module. The fixing plate is fixedly connected to an inner side of the lower shell. The light emitting module is fixedly connected to one side, far away from the lower shell, of the fixing plate. The fixing plate is provided with a first light-transmitting hole for displaying the light emitting module; and the lower shell is provided with a second light-transmitting hole for displaying the fixing plate.