YASKAWA OYMC V1000

YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 293
2.12 Self-Diagnostics
MEMOBUS/Modbus Communications
2
2.12 Self-Diagnostics
The drive has a built-in self-diagnosing function of the serial communication interface
circuits. To perform the self-diagnosis function, use the following procedure.
1. Turn on the power to the drive.
2. Note the present terminal S6 function selection setting (H1-06) and set it for the
communications test mode (H1-06 = 67).
3. Turn off the power to the drive.
4. With the power off, wire the drive as shown in the illustration below.
Figure 2.7
Figure 2.7 Terminal Connections for Communication Self-Diagnostics
5. Check and note the setting of DIP switch S3. Set it to NPN if it is in the PNP position.
6. Turn the power to the drive back on.
7. During normal operation, the drive will display PASS. This indicates that the
communications test mode is operating normally.
When a fault occurs, the drive will display CE on the keypad display.
8. Turn off the power supply.
9. Remove the wire jumpers from terminal R+, R-, S+, S- and, S6-SC and set back DIP switch
S3 to its original position. Set terminal S6 to its original function.
10.Return to normal operation.