A fuel cell separator which has a metal substrate and offers a high corrosion resistance and conductivity is provided. The control device implements a target rotational angle change computation process that calculates a target rotational angle change of the stepper motor and a divisional target rotational angle computation process that equally divides the target rotational angle change within a range not exceeding a rotational limit for loss of synchronism of the stepper motor. The ARS determines the intended recipient of the call and establishes a connection to them. A coil is arranged around the magnetic circuit, in which electric energy is induced in response to a varying magnetic flux in the magnetic circuit.