GE Industrial Solutions AF-300 G11 - Manual (Page 107)

7-6
Data subject to change without notice 7/07. © 2007 GE Drives
(2) If the motor rotates but the speed does not change
In the following cases, changing the motor speed is also restricted.
Signals are input from control terminals both 12 and C1 when “F01 Frequency command 1” and “C30
Frequency command 2” are set to 3, and there is no significant change in the added value.
The load is excessive, and the torque limiting and current limiting functions are activated.
The motor rotates but the
speed does not change.
YES
Change the setting.
Is the maximum
frequency setting too
low?
Is the higher or lower
frequency limiter
activating?
Is the timer timing
too long?
Which frequency setting
methods used: keypad panel,
analog signal, multi-step
frequency, or UP/DOWN
control? Is the pattern
operation activated?
Is the pattern operation
competed?
Are all acceleration and
deceleration times
identical?
Are the external connections
between X1-X9 and CM
correct?
Increase the setting.
Set the frequency.
Does the speed change when
the UP or DOWN is pressed?
Can the frequency
setting signal (0 to 10 V,
4 to 20 mA) be changed?
Correct the connection
error.
Replace the faulty frequency
setting POT (VR) or signal
converter as required.
YES
YES
Pattern
operation
Keypad panel
operation
Analog signal
Multi-step frequency
UP/DOWN
YES
NO
NO
NO
YES
YES
NO
NO
NO
YES
YES
NO
NO NO
NO
YES
YES
Change the frequency
setting.
Are the external
connections between
control terminals 13, 12,
11 and C1 correct?
Are the frequencies for
each multi-step
frequency different?
Is the acceleration or
deceleration time set
too long?
Faulty drive or error
due to noise, etc.
Contact GE Drives.
Change the time setting to
conform to load values.
YES
NO