Diagnostic & Troubleshooting 6 - 16
The motor stops during acceleration or when a load is connected.
The load may be too heavy. The Drive has a stall prevention function and an automatic torque boost function, but the motor
responsiveness limit may be exceeded if acceleration is too rapid or if the load is too heavy. Lengthen the acceleration time
(CI-01) or reduce the load. Also consider increasing the motor size.
The motor only rotates in one direction.
"Reverse run prohibited" may be selected. If b1-04 (Prohibition of Reverse Operation) is set to 1 (reverse run prohibited), the
Drive will not receive reverse run commands. To use both forward and reverse operation, set b1-04 to 0, and operate in Auto
mode.
The Direction of the Motor Rotation is Reversed
If the motor rotates in the wrong direction, the motor output wiring is incorrect. When the Drive U/T1, V/T2, and W/T3 termi-
nals are properly connected to the motor, the motor operates in a forward direction when a forward run command is received.
The forward direction depends on the manufacturer and the motor type, so be sure to check the specifications.
The direction of rotation can be reversed by switching two wires among U/TI, V/T2, and W/T3.
If the Motor Does Not Put Out Torque or If Acceleration is Slow
Use the following information if the motor does not output torque or if acceleration is too slow.
The stall prevention level during acceleration is too low.
If the value set for L3-02 (Stall Prevention Acceleration Level) is too low, the acceleration time will be too long. Check to be
sure that the set value is suitable.
The stall prevention level during running is too low.
If the value set for L3-06 (Stall Prevention Level during Running) is too low, the speed will drop before outputting torque.
Check to be sure that the set value is suitable.
If the Motor Operates Higher Than the Speed Command
Use the following information if the motor operates higher than the Speed Command.
The analog frequency reference bias setting is wrong (the gain setting is wrong).
The Speed Command bias set in parameter H3-03 is added to the Speed Command. Check to be sure that the set value is
suitable.
A signal is being input to the Speed Command (current) terminal A2.
When 1F (frequency reference) is set for parameter H3-09 (Multi-function Analog Input Terminal A2 Function Selection), a
frequency corresponding to the terminal A2 input voltage (current) is added to the Speed Command. Check to be sure that the
set value and analog input value are suitable.
Содержание E7 Drive
Страница 1: ...E7 Drive User Manual Model E7U Document Number TM E7 01...
Страница 74: ...Start Up 4 10 Notes...
Страница 132: ...Maintenance 7 8 Notes...
Страница 162: ...Parameter List A 30 Notes...
Страница 166: ...Capacity Related Parameters B 4 Notes...
Страница 184: ...Communications D 14 Notes...
Страница 192: ...Spare Parts F 4 Notes...