Page 77 - RoboCilindri, RCP2-RCP3, robocilindri, sinta,

Technical InformationExplanation of TermsOffsetTo shift from a position.Online modeThe state in which the PC software is started with the RS232 cable connected to the controller.Open collector outputA system with no overload resistance in the voltage output circuit, that outputs signals by sinking the load current. Since this circuit can turn the load current ON/OFF regardless of voltage potential to which the current is connected, it is useful for switching an external load and is widely used as a relay or ramp circuit or the like for switching external loads, etc.Open loop systemA type of control system. This system only outputs commands and does not take feedback.A typical example of this is the stepping motor. Since it does not compare each actual value against the commanded value, even if a loss of synchronization (i.e signal error) occurs, the controller would not be able to correct it.OperationOperation.OverhangThe state in which the object that is mounted onto the actuator extends out to the front/rear, left/right, or above/below the axis of movement.Overload checkA check for overload. (One of the protection functions)OverrideA setting for the percentage with respect to the running speed. (e.g. If VEL is set to 100mm/sec, an override setting of 30 will yield 30mm/sec)Pitch error [pitch deviation or lead deviation]Due to problems in the manufacturing, such as the heat treatment process used, the deviations of the ball screws, which are a key mechanical element of the actuator, are not always small when inspected closely. A JIS rating is used to indicate the qualitative accuracy of these items.These items made for the market must meet tolerance values set as Class C10.The accuracy required to meet the C10 standard is to be within a margin of error of ±0.21mm for every 300mm of length. Generally the screw pitch error deviation accumulates in a plus or minus direction. One method of improving these items is to grind them in a finishing process.[e.g.] When positioning 300mm from home:The machine accepts a set position of 300 ±0.21. Supposing that the actual stop position is 300.21, if this position is repeatable and maintained at 300.21 ± 0.02 using a JIS6201-compliant method, then the repeatability standard for accuracy is met.PitchingForward-backwardalong the axis of the slider's movement. (Direction of Ma)PLCAbbreviation for Programmable Logic Controller.(Also referred to as sequencers or programmable controllers). These are controllers that can be programmed to control production facilities and equipment.Positioning bandThe span within which a positioning operation is deemed as complete with respect to the target point. This is specified by a parameter. (PEND BAND)motion MaPositioning repeatabilityThe variation in stop position accuracy for repeated positioning toward the same point.Positioning settling timePoint A HomeThe gap between the actual movement time and the ideal calculated value for movement. (Positioning operation time; processing time for internal controller operations.) The broader meaning includes the time for convergence of the mechanical swing.Appendix: - 21 Technical Reference/Information