Allen-Bradley PowerFlex 70 Enhanced Control, Справочное руководство, Страница: 119 / 170

Voltage Class 115
These parameter bits are normally written to over a network (using Datalinks)
and control the user sets as follows:
•
[Dyn UserSet Actv], parameter 206 reports the status of Dynamic Mode and
which User Set is active. Bit Definitions follow:
– Bit 0 = “Dynamic Mode” 0 = active, 1 = not active
– Bit 1 = “User Set 1” 0 = active, 1 = not active
– Bit 2 = “User Set 2” 0 = active, 1 = not active
– Bit 3 = “User Set 3” 0 = active, 1 = not active
User Set Rules
•
In Dynamic Mode, all three user sets must have parameter settings, even if only
two of the user sets will be utilized.
•
The desired settings for [Dyn UserSet Cnfg] must be saved as part of all three
user sets.
•
Switching between user sets occurs in less than 50 milliseconds, but must be
done while the drive is stopped.
•
Digital input settings in all three user sets must be equal for dynamic mode to
operate, even if the network control (instead of digital input control) is used to
switch between user sets.
Voltage Class
PowerFlex drives are sometimes referred to by voltage “class,” which identifies the
general input voltage to the drive. Voltage class includes a range of voltages. For
example, a 400V class drive will have an input voltage range of 380-480V AC.
While the hardware remains the same for each class, other variables, such as factory
defaults, catalog number and power unit ratings will change. In most cases, all
drives within a voltage class can be reprogrammed to another drive in the class by
resetting the defaults to something other than “factory” settings. Refer to "Reset
Parameters" on
page 88 for an explanation of parameter reset options that are
voltage class specific.
[Voltage Class], parameter 202 is required by the drive when parameter downloads
occur and is generally not programmed individually. [Voltage Class] provides a
“Low Voltage” and “High Voltage” setting. The default value is dependent on the
voltage that matches the catalog number (e.g. 400V or 480V). For example, a drive
shipped as 400V (catalog code “C”) will have a default of “Low Voltage” for
[Voltage Class]. A drive shipped as 480V (catalog code “D”) will have a default of
“High Voltage.” When a change is made to [Voltage Class], the continuous current
rating of the drive will change by an amount equal to the published difference
between catalog numbers.
[Dyn UserSet Sel]
Parameter 205, bit 1 [Dyn UserSet Sel]
Parameter 205, bit 0 User Set
0 0 1
0 1 2
1 0 3
1 1 3
70EC 700VC 700H
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