Turning the Power ON and OFF, and Booting the System FP2 positioning Unit
5-8
5.4.2 Checking the Safety Circuit based on Positioning Unit
Procedure:
1. Using forced operation of Over limit switch for the external safety circuit of the positioning unit,
check to see if the Over limit input is being properly taken into the positioning unit.
Whether or not Over limit input is taken can be confirmed by the input flag. In addition, the Over limit
input valid logics can be changed using the control code in the user program.
2. If necessary, input a program to start the JOG operation. Then operate the over Over limit input
forcibly to check whether the motor will stop.
3. Using the JOG operation, check to see if the Over limit switch is functioning properly.
5.4.3 Checking the Rotation and Travel Directions, and the Travel Distance
Procedure:
1. Check to see if the directions of rotation and travel are correct using the JOG operation or the
automatic acceleration/deceleration.
Points to check
The direction of rotation is determined by the driver wiring, the settings of the positioning unit shared
memory control code and the program setting. At the back of the unit, and the data set in the program.
2. Check to see if the specified number of pulses produces the travel distance indicated by the
design.
Points to check
The travel distance is determined by the ball screw pitch, the reduction gear ratio, the electronic
multiplication ratio of the driver, the number of pulses specified in the program, and other factors.
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