The drive power supply line 35 and the control power supply line 36 are connected to the connector 171 of the tape feeder 10. Hence, when the power supply device 41 or 42 is connected to the pallet member 1A, the tape feeders 10 come into the standby state where the control device 17 operates. In addition, under the opening and closing control performed by the power supply control device 2, the shut-off state and the conduction state of the drive power switches 54 are switched and the drive power switch performs an opening and closing operation of only a drive current.

The power supply control device 2C of the component supply device 1 according to the fourth embodiment also operates based on the operation flow of the first embodiment illustrated in FIG. 4, and a part of operation is different therefrom. Hereinafter, an operation different from that in the first embodiment will be described, and thus the description of the same operation will be omitted. In step S10 in FIG. 4, the overcurrent protection section 24C of the fourth embodiment causes the specific tape feeder 10, which is in the unloading operation state, to the standby state by causing the drive power switch 54 to be in the shut-off state. The function of preventing the occurrence of the overcurrent state which is performed by the overcurrent protection section 24C is the same as that in the third embodiment illustrated in FIG. 9, and thus the detailed description is omitted.