HP Anab EQ5 - Manual (Page 101)

EQ5 AC Drive Operations Manual
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TECO – Westinghouse Motor Company Trouble Shooting Chart 95
(2) If the motor rotates but the speed does not change
NO
YES
NO
NO
YES
NO
YES YES
Change the setting.
Is the pattern
operation complete?
Are all acceleration
and deceleration
times identical?
Are the frequencies
for each multistep
frequency different?
Change the
frequency setting.
Is the acceleration
or deceleration time
set too long?
Change the time setting
to conform to load values.
The motor rotates but
the speed does not change.
Is the maximum
frequency
setting too low?
NO
YES
Is the timer
timing too long?
YES
NO
Which frequency setting
methodis used: keypad
panel, analog signal,
multistep frequency,
or UP/DOWN control?
Is the pattern operation
activated?
Pattern
operation
NO
Analog signal
Keypad panel
operation
YES
NO
Correct the
connection error.
YES
NO
NO
Is the higher or lower
frequency limiter
activating?
Does the speed change
when the or
key is pressed?
YES
Multistep frequency
UP/DOWN
YES
Replace the faulty
frequency setting
POT (VR) or signal
converter as required.
NO
Are the external
connections
between control
terminals 13, 12,11
,V2 and C1 correct?
Are the external
connections between
X1-X9 and CM correct?
Faulty inverter or error
due to noise, etc.
Contact TWMC.
Increase the setting.
YES
YES
Set the frequency.
Can the frequency
setting signal (0 to
+/-10V / 4 to 20 mA)
be changed?
YES
∨
∧
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
terminals 13, 12, 11,