Maintenance And Inspection - Omron SYSDRIVE 3G3EV User Manual

Operation
Make sure that jump frequencies 1 to 3 determined with the constants set in n56 to
n58 and the constant set in n59 for the jump width are appropriate.
•The preset output frequency exceeds the upper-limit frequency.
The upper-limit frequency can be obtained from the following formula.
[Maximum frequency determined with constant set in n24] x [frequency reference
upper limit determined with constant set in n41]/[100 (Hz)]
Make sure that the constants set in n24 and n41 are correct.
5-2-14 Motor Does Not Operate with EF Warning
•EF Warning (simultaneous input of forward and reverse commands) is a warning
alarm that is issued when forward and reverse commands are simultaneously input for
longer than 500 ms. Check the Inverter's sequence input.
•The Inverter input may be set to the ON state due to the current leaked in from the con-
trol output.
Under the wiring condition shown below, if the control output power supply is lower than
24 VDC or if it is set to OFF, current may flow in the direction shown by the arrows and
may operate the Inverter input. In such a case, insert a diode in the A section shown
below.

5-3 Maintenance and Inspection

H Daily Inspection
While the system is operating, check the following items:
•Check the motor for noise.
•Check for abnormal heating.
•Check if the ambient temperature is too high.
•Check if the output current monitor display indicates a higher value than usual.
A section
24 V
SF
SR
S1 to
S3
3.3 K
360
SC
0.1µ
GND
Chapter 5
5-15