VMX
2
Series Digital Solid State Soft Starter User Manual
39 |
P a g e
5.6.2 Starting Modes
The
VMX2 Series
is capable of several different starting modes, but is
set from the factory for the most common applications. A second ramp
profile is available for use should it be required. Unless wired to do so,
the
VMX2 Series
defaults to Ramp 1. This section describes functions
for Ramp 1, with references to function numbers that do the same thing
for Ramp 2 (if required).
Refer to Appendix 2 for a detailed
description
of the differences in Ramp Profiles and their uses. All
current percentages are based on the Motor FLA as programmed in
F001
.
F010 = Ramp Profile Selection
Factory Setting = 1
Range = 1 - 4
This Function selects the type of Ramp Profile desired. Ramp
profiles can be either Voltage Ramp or Current Ramp. See
Appendix 2 for details. Each Ramp Profile consists of 3 settings:
Initial Torque, Ramp Time, and Maximum Current Limit.
Because there are two ramps available, there are 4 settings to
cover the combinations of profiles possible. If you are not using
the 2
nd
ramp, the
VMX2 Series
will ignore all settings in
reference to Ramp 2.
Ramp 1
(Dual Ramp Input Open)
Ramp 2
(Dual Ramp Input Closed)
F010
Setting
Ramp Profile
Ramp Profile
1
Voltage
Voltage
2
Current
Current
3
Voltage
Current
4
Current
Voltage
Table 5.6.2: Ramp Type selection Settings
Select Voltage Ramp by setting
F010 = 1
(factory default)
When Voltage Ramp is selected,
Set Initial Torque (Voltage) with
F011
(see below)
Set Ramp Time with
F013
(see below)
Set Maximum Current Limit with
F014
(see below)
Or;
Select Current Ramp by setting
F010 = 2
When Current Ramp is selected,
Set Initial Torque (Current) with
F012
(see below)
Set Ramp Time with
F013
(see below)
Set Maximum Current Limit with
F014
(see below)
▪
Note:
When either Ramp is set to “Voltage Ramp”, the corresponding
“Initial Torque (Current)” setting is ignored. Conversely, when set to
“Current Ramp”, the “Initial Torque (Voltage)” is ignored.
