4-10
Programming
Dual Ramp Start
The SMC Dialog Plus controller provides the user with the ability to
select between two Soft Start settings. The parameters below are
available in the Advanced Setup programming mode to obtain Dual
Ramp control:
①
The Dual Ramp feature is available only with the standard controller.
Full Voltage Start
The SMC Dialog Plus controller may be programmed to provide a
full voltage start (output voltage to the motor reaches full voltage
within 1/4 second) with the following programming:
Parameter Option
Advanced Setup
The user must select the Advanced Setup programming
mode to obtain access to the Dual Ramp parameters.
—
Starting Mode
This must be programmed for Soft Start.
—
Dual Ramp
①
This allows the user the option to choose between two
Soft Start profiles defined by:
1. Ramp Time #1/Initial Torque #1 and
2. Ramp Time #2/Initial Torque #2.
When this feature is turned on, the ramp time/initial
torque combination is determined by a hard contact
input to terminal 15. When this input signal is low, ramp
time/initial torque #1 are selected. When this input is
high, ramp time/initial torque #2 are selected.
No, Yes
Ramp Time #1
This programs the time period during which the
controller will ramp the output voltage up to full voltage
for the first Soft Start setup.
0 to 30 seconds
Initial Torque #1
This parameter establishes and adjusts the initial
reduced output voltage level for the first Soft Start setup.
0 to 90% locked rotor
torque
Ramp Time #2
This programs the time period during which the
controller will ramp the output voltage up to full voltage
for the second Soft Start setup.
0 to 30 seconds
Initial Torque #2
The initial reduced output voltage level for the second
Soft Start setup is established and adjusted with this
parameter.
0 to 90% locked rotor
torque
Parameter Option
Starting Mod
e
This
must
be programmed for Soft Start.
—
Ramp Time #1
This
must
be programmed for 0 seconds for a full
voltage start.
—
Initial Torque #1
This
must
be programmed for 90% for a full voltage
start.
—
Kickstart Time
This
must
be programmed for 0.0 seconds for a full
voltage start.
—
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