30
• Control Keypad
Function &
Default
Range
Unit
Description
Starting Voltage
30 %
Starting Current
100 %
10-50%
After
reaching
50% the
display
changes to:
Starting
Current
100-400%
% of
mains
voltage
Sets the motor’s Starting Voltage.
The motor’s torque is directly proportional to the square of the
voltage.
This adjustment also determines the inrush current and
mechanical shock. A setting that is too high may cause high
initial mechanical shock and high inrush current. This can occur
even if
Current Limit
is set low because the
Starting
Voltage
setting overrides the
Current Limit
setting.
A setting that is too low may result in prolonged time until the
motor starts to turn. In general, this setting should ensure that
the motor starts turning immediately after start signal.
Note:
When
Starting Voltage
is set its maximum value, this
displays changes to
Starting Current
.
When
Starting Current
is set the ASTAT-XT causes current
ramp instead of voltage ramp.
29
The range of the Starting Voltage can be extended to 5-80% by using the EXPANDED SETTING as described in section
5.5.5
page 50.
