74 • Control Keypad
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START PARAMETERS
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Displays in MINIMIZED MODE and MAXIMIZED MODE
Display and Default
Values
Range Description Remarks
ACC. TIME
10 SEC.
1-30sec.
Note:
The range of
the ACC. TIME
can be
extended to
1-90 sec. by
using the
EXPANDED
SETTING as
described in
section
6.5.5
page 58.
Sets
ACCEL
ERATION
TIME of the
motor.
Determines the motor’s voltage ramp-up
time, from initial to full voltage.
It is recommended to set ACCELERATION
TIME to the minimum acceptable value
(approx. 5 sec).
Notes:
(1) Since CURRENT LIMIT overrides
ACC. TIME, when CURRENT LIMIT is set
low, the starting time will be longer than the
ACC. TIME setting.
(2) When the motor reaches full speed
before voltage reaches nominal, ACC.
TIME setting is overridden, causing voltage
to quickly ramp-up to nominal.
(3) Using starting curves 1, 2, 3 prevents
quick ramp up.
MAX. START TIME
30 SEC.
1-30sec.
Note:
The range of
the MAX.
START TIME
can be
extended to
1-250 sec. by
using the
EXPANDED
SETTING as
described in
section
6.5.5
page 58.
Sets
MAXIMUM
START TIME
The maximum allowable start time, from the
start signal to the end of the acceleration
process. If voltage/speed does not reach
nominal during MAX. START TIME then
RVS-DN will trip the motor and create a
fault. The LCD will display the LONG
START TIME fault message.
For example, this can occur when the
CURRENT LIMIT setting is too low.
.
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