Danaher Motion
05/2008
Advanced Configuration
S200-VTS Product Manual
83
8.5
Parameters and Variables
Setup parameter values control the operation and configuration of an S200 and read only
variables give status information about the present operation of the drive. The below defines
the three types of parameters and variables.
NV Parameter:
A type of variable stored in the non-volatile (NV) permanent memory on
the drive. See NV Parameters for a complete list and descriptions.
Status Variable:
Gives information about the present state of the drive. Most of these
variables are Read-Only, meaning that you cannot directly change them; their value is
controlled by the drive itself, for example, measured shaft speed. See Status and Control
Variables for a complete list and descriptions.
Control Variable:
A variable that controls a particular function on the drive. Control
Variables are volatile (erased when power is removed) and are initialized at fixed default values
every time that the drive is turned on. See Status and Control Variables for a complete list and
descriptions.
The next section gives more details on the memory structure of the drive and how values are
initialized. The succeeding two sections give detailed lists and descriptions of NV Parameters
and Status, Control Variables respectively. The functionality of the drive may be updated from
time to time, which may add to these lists.
8.5.1
Parameter and Variable Storage
The S200 has two types of memory: non-volatile memory and RAM. S200 non-volatile memory
(NV memory) is similar to disk memory in a personal computer in that it can be written to and
read from and maintains its settings without power. The S200 memory RAM is temporary
memory. When control power is applied, all NV parameter values are automatically copied from
NV memory into S200 RAM memory. The S200 operates out of temporary memory; that is the
temporary memory parameter values set the S200 configuration and adjustments.
S200 Tools configuration software changes S200 settings, which include both parameters and
variables. In the Offline branches of S200Tools configuration software, changes made to a
setting are made only in the PC S200Tools memory on the PC. Clicking the
Download Drive
button sends the values to the drive’s temporary memory. Clicking the
Download NV
button
sends the values to the drive’s NV permanent memory. In the latter case the drive’s control
power must be cycled to get the drive to load the values into active use. When downloading or
uploading to the S200 from S200Tools software, all drive settings are copied. It is not possible
to upload or download only one parameter or variable.
In the online branch of S200Tools, the
Drive Setup
screen of S200Tools operates differently
than in offline. Under the Drive Setup screen, any change to a parameter is automatically
communicated to the drive's temporary memory. Once all the parameters are set you should
use the File menu to do a file save on the PC to save the drive configuration (*.S2C). If a drive
is connected, you can click the
Download Drive
button to send the parameters into the drive.
In the online section of S200Tools the
Status
screen allows a custom selection of NV
Parameters and variables to be selected. This screen is useful for interactively making setup
changes and to view drive status. When changes are made to an NV Parameter or a Variable
in this screen, the value in the S200 Tools PC memory is automatically copied to the S200
RAM memory for that particular parameter. Clicking
NV Save
on the Status screen uploads the
current state of the drive temporary RAM and downloads all these settings to the S200 non-
volatile memory. This step should be done before power cycling the drive control power and
losing the drive setup changes.
8.5.2
Model Dependent Scale Factors
The Model Dependent Scale Factors are used to calculate limits for some of the drive
parameters. The following table lists the model dependent scale factors.
Model Dependent Scale Factors
Model User
DIpeak ARMS
VBusScale Relative x
Description
S20260
4.5
1
240 VAC 4.5 ARMS peak
S20360
9
1
240 VAC 9 ARMS peak
S20660
18
1
240 VAC 18 ARMS peak
S20330
9
0.25
90 VDC 9 ARMS peak
S20630
18
0.25
90 VDC 18 ARMS peak