Press I[ or @%$ key
(“MONITOR” function becomes
applicable automatically) .
.$g*
Turn the frequency reference Press -1 key. (Note 2,
8-r:
ad
potentiometer little by little
s
counter-clockwise to “zero”
4
6
position. (motor now stopped)
1
:
L*
f-
-
Change of frequency is not displayed if the parameter unit is not set
in “MONITOR” mode.
(Note 1) As the frequency displayed by the readout of parameter unit
increases, the motor speed increases.
(Note 2 > As the frequency displayed by the readout of parameter unit
decreases, the motor speed decreases.
When the output frequency reaches the “DC brake operating
frequency”, the DC dynamic brake is activated and the motor
is stopped immediately (refer to “CAUTION” described below) .
Check points:
(1) Check that the motor rotates in correct direction (for relationship
between motor phase sequence and direction of rotatiom, refer to
chapter 8 4. WIRING.)
(2)
Check that the motor does not generate unusual hums or vibration.
(3) Check that change of output frequency is displayed correctly.
(4) Check if “ALARM” lamp lights during acceleration or deceleration
(inverter trip) . If it lights, perform the following check:
l
Check if load is too heavy.
0 Increase acceleration/deceleration time.
l
Reduce amount of boost.
-25-
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