Resolving Problems; If The Positioning Unit Err Led Lights - Panasonic FPG Series Technical Manual

Operation if an Error Occurs

15.3 Resolving Problems

15.3.1 If the Positioning Unit ERR LED Lights

Conditions
There is a set value error for positioning or a limit error in the positioning data.
Procedure 1
Using programming tools, check the contents of an error.
X_E ON: A set value error occurs.
X_F ON: A limit error occurs.
In case of a limit error, go to Procedure 2.
In case of a set value error, go to Procedure 3.
Procedure 2
By either of the following, check a limit error.
1. When the set Over limit switch is ON, execute JOG operation, home return or any other operation to
move the table until the Over limit switch goes OFF after a error is canceled.
2. In case of error with the set Over limit switch being OFF or without the Over limit switch, change the
limit input valid logic using the control code.
Over limit switch (+) and (-) input status can be monitored by X_B and X_C.
Go to Procedure 5.
Procedure 3
Using programming tools, check to see if the values in the data registers being used as the positioning
parameter data tables are within the allowable setting range.
Range for positioning data setting
Type of parameter
Startup speed (pps)
Target speed (pps)
Acceleration/deceleration time (ms)
Points to check:
1.Is the value for the startup speed larger than that for the target speed? An error occurs if the two
values are the same, as well.
For the first speed with E point control and P point control, and when carrying out JOG operation,
JOG positioning operation and home return, a value should be set which is larger than the startup
speed.
2. Has the target speed been set to "0"?
3. Has a data register been set to a negative value?
4. If parameters have been set from an external source, and if operation is being carried out internally in
the PLC, check to make sure the values match those specified by the design.
Procedure 4
Modify the value out of the range in the program.
Procedure 5
Reset an error by either of the followings;
1. Specify in the program so that the error clear flag (ECLR) goes OFF, ON and then OFF.
2. By the forced output using FPWIN-GR or FPWIN-Pro, make the error clear flag (ECLR)
goes OFF, ON and then OFF.
3. Turn OFF once the driver and then PLC and turn ON again PLC and then the driver.
15-8
Allowable setting range
0 to +4,000,000 [pps]
+1 to +4,000,000 [pps]
0 to +32,767 [ms]
FP∑ Positioning Unit
Program specifications
K0 to K4,000,000
K1 to K4,000,000
K0 to K32,767