| 摘要 |
PURPOSE:To shorten repairing time by outputting a switching command from switching instructing means to command signal switching means to isolate a feedback loop of a downstream side from the influence of a feedback signal of an upstream side, and independently isolating it from a command signal from predetermined signal generating means to enable independent operation. CONSTITUTION:First command signal switching means 31 is, for example, switched by a switching command from a keyboard to isolate a position feedback signal PFBK, and a speed loop is solely operated by a predetermined speed command signal from predetermined signal generating means 33. Second signal switching means 32 is switched to isolate the position feedback signal PFBK from a speed feedback signal IFBK, and a single operation of a current loop is performed by a predetermined current command signal from predetermined signal generating means 34. An abnormal position can be easily determined by the solely isolated operation of the loop of the downstream side. |
